【Java.JDBC/ORM】JPA

最新推荐文章于 2022-05-16 16:11:29 发布
原创 最新推荐文章于 2022-05-16 16:11:29 发布 · 626 阅读 · 1 ·
CC 4.0 BY-SA版权
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
文章标签：

#Java.JDBC ORM

本文详细介绍了JPA（Java Persistence API）的基本概念、核心特性以及如何在实际项目中实现持久化操作，包括实体类的设计、注解使用、查询语句编写等关键步骤。同时，还讨论了JPA与其他持久化框架的区别与优势，为开发者提供了一套高效、灵活且易于维护的数据库交互方案。

JPA 参考资料： 

  1. JPA从入门到精通 （http://download.youkuaiyun.com/detail/robinjwong/8286395）


异常： Error creating bean with name ‘org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfig
Java Punk
12-21 1万+
是数据库jdbc连接异常造成的启动失败
【JAVA】Java高级：Java数据库编程——ORM框架（Hibernate、JPA）
thinking_chou的专栏
11-28 1745
ORM框架（如Hibernate和JPA）通过对象关系映射，简化了Java应用与数据库之间的交互。通过使用ORM，开发者可以更专注于业务逻辑，而不必纠结于复杂的SQL语句和数据库连接细节。ORM的引入不仅提高了开发效率，也增强了代码的可维护性和安全性。在实际应用中，ORM框架广泛应用于企业级应用开发、Web应用、微服务架构等场景，成为现代Java开发的重要组成部分。希望通过以上的介绍和示例，能够帮助你更好地理解ORM框架及其在Java开发中的应用。
org.springframework.orm.jpa.JpaSystemException: Unknown integral data type for ids : java.lang.Strin
骑大马挎大刀
04-15 1045
问题描述： 报这个异常，当主键是Sring类型时，可以试试将建主键生成策略去掉 org.springframework.orm.jpa.JpaSystemException: Unknown integral data type for ids : java.lang.String; nested exception is org.hibernate.id.IdentifierGenerationException: Unknown integral data type for ids : java.lan
org.springframework.orm.jpa.JpaTransactionManager
12-24 1520
JpaTransactionManager 采用的事务策略是什么 ？
org.springframework.orm.jpa.JpaSystemException
Angus
09-22 3929
错误回放： org.springframework.orm.jpa.JpaSystemException: Null value was assigned to a property of primitive type setter of com.rails.air.dataserver.entity.KTOrderMainEntity.flag1; nested exception i...
org.springframework.orm.jpa.JpaSystemException: ids for this class must be manually assigned before
N_007的博客
05-16 2277
在使用 Spring JPA 进行数据库保存操作时，提示该错误 错误意思是 在调用save()方法之前之前，必须手动添加此类的ID。 数据库 id 字段已设置自动增长，发现实体类 id 并未设置自动增长属性，加入 @GeneratedValue(strategy = IDENTITY) 标签即可 @Id @GeneratedValue(strategy = IDENTITY) private Long id; ...
理解JDBC/JPA/Mybatis/Hibernate
__一叶__的博客
05-11 1137
JPA 全称Java Persistence API，为POJO提供持久化标准规范，可以通过注解或者XML描述【对象-关系】之间的映射关系，并将实体对象持久化到数据库中。 JPA是一套ORM规范，Hibernate实现了JPA规范！ Spring Data JPA 可以理解为 JPA 规范的再次封装抽象，底层还是使用了 Hibernate 的 JPA 技术实现。 JDBC和JPA的区别 不同标准：jdbc是数据库的统一接口标准；jpa是orm框架的统一接口标准。 用法区别：jdbc更注...
Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfigurat
哈
04-30 6243
报错 pom.xml加入了jpa的引用， 项目启动时会去读yml或properties文件里的jdbc配置，没有就报错：Error creating bean with name ‘org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration’: Unsatisfied dependency expressed t...
org.springframework.orm.jpa.JpaSystemException: could not execute query;
weixin_43114485的博客
07-10 8868
报错来源: 在配置好的idea上,把代码生成器自动生成的代码导入带项目中,直接进行findALl全查,报错,如下图: 尝试解决方法: 数据库运行sql语句,查询成功,数据ok, 数据乱码: 数据库编码格式utf8,数据库可插入正常中文 清空缓存,重新编译,重启idea, JpaSystemException 重新生成 反复n遍 … 最终解决方法: 数据库字段有字段type:datet...
解决java.lang.ClassNotFoundException: com.mysql.jdbc.Driver问题（真实有效）
热门推荐
向小凯同学学习
06-29 3万+
数据库驱动找不到 这个一场特别奇葩，既然这个异常存在，竟然又能编译通过，项目也不报错，只是在启动的时候，抛出异常！ 一、看看这个异常 Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2018-06-29 19:...
java.sql.SQLSyntaxErrorException: Unknown database 'sports_management' at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:121) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:815) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:438) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:189) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:359) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:470) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:100) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:424) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcIsolationDelegate.delegateWork(JdbcIsolationDelegate.java:61) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.getJdbcEnvironmentUsingJdbcMetadata(JdbcEnvironmentInitiator.java:273) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:105) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:129) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:238) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:215) at org.hibernate.boot.model.relational.Database.<init>(Database.java:45) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.getDatabase(InFlightMetadataCollectorImpl.java:223) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:191) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:169) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1432) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1503) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:75) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1822) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1771) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:325) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:323) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1173) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:936) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:616) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:753) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:455) at org.springframework.boot.SpringApplication.run(SpringApplication.java:323) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1342) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1331) at com.sports.SportsManagementApplication.main(SportsManagementApplication.java:13) 2025-10-13 10:22:30 [main] WARN o.h.e.j.e.i.JdbcEnvironmentInitiator - HHH000342: Could not obtain connection to query metadata java.lang.NullPointerException: Cannot invoke "org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(java.sql.SQLException, String)" because the return value of "org.hibernate.resource.transaction.backend.jdbc.internal.JdbcIsolationDelegate.sqlExceptionHelper()" is null at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcIsolationDelegate.delegateWork(JdbcIsolationDelegate.java:116) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.getJdbcEnvironmentUsingJdbcMetadata(JdbcEnvironmentInitiator.java:273) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:105) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:129) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:238) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:215) at org.hibernate.boot.model.relational.Database.<init>(Database.java:45) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.getDatabase(InFlightMetadataCollectorImpl.java:223) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:191) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:169) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1432) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1503) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:75) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1822) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1771) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:325) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:323) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1173) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:936) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:616) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:753) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:455) at org.springframework.boot.SpringApplication.run(SpringApplication.java:323) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1342) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1331) at com.sports.SportsManagementApplication.main(SportsManagementApplication.java:13) 2025-10-13 10:22:30 [main] WARN org.hibernate.orm.deprecation - HHH90000025: MySQL8Dialect does not need to be specified explicitly using 'hibernate.dialect' (remove the property setting and it will be selected by default) 2025-10-13 10:22:30 [main] WARN org.hibernate.orm.deprecation - HHH90000026: MySQL8Dialect has been deprecated; use org.hibernate.dialect.MySQLDialect instead 2025-10-13 10:22:32 [main] INFO o.h.e.t.j.p.i.JtaPlatformInitiator - HHH000489: No JTA platform available (set 'hibernate.transaction.jta.platform' to enable JTA platform integration) 2025-10-13 10:22:32 [main] INFO com.zaxxer.hikari.HikariDataSource - HikariPool-1 - Starting... 2025-10-13 10:22:33 [main] ERROR com.zaxxer.hikari.pool.HikariPool - HikariPool-1 - Exception during pool initialization. java.sql.SQLSyntaxErrorException: Unknown database 'sports_management' at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:121) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:815) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:438) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:189) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:359) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:470) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:100) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:424) at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:46) at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:39) at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcConnection(ImprovedExtractionContextImpl.java:63) at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcDatabaseMetaData(ImprovedExtractionContextImpl.java:70) at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.processTableResultSet(InformationExtractorJdbcDatabaseMetaDataImpl.java:64) at org.hibernate.tool.schema.extract.internal.AbstractInformationExtractorImpl.getTables(AbstractInformationExtractorImpl.java:570) at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.getTablesInformation(DatabaseInformationImpl.java:122) at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:72) at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:232) at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:117) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:286) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.lambda$process$5(SchemaManagementToolCoordinator.java:145) at java.base/java.util.HashMap.forEach(HashMap.java:1429) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:142) at org.hibernate.boot.internal.SessionFactoryObserverForSchemaExport.sessionFactoryCreated(SessionFactoryObserverForSchemaExport.java:37) at org.hibernate.internal.SessionFactoryObserverChain.sessionFactoryCreated(SessionFactoryObserverChain.java:35) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:295) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:450) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1507) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:75) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1822) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1771) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:325) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:323) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1173) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:936) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:616) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:753) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:455) at org.springframework.boot.SpringApplication.run(SpringApplication.java:323) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1342) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1331) at com.sports.SportsManagementApplication.main(SportsManagementApplication.java:13) 2025-10-13 10:22:33 [main] WARN o.h.e.jdbc.spi.SqlExceptionHelper - SQL Error: 1049, SQLState: 42000 2025-10-13 10:22:33 [main] ERROR o.h.e.jdbc.spi.SqlExceptionHelper - Unknown database 'sports_management' 2025-10-13 10:22:33 [main] ERROR o.s.o.j.LocalContainerEntityManagerFactoryBean - Failed to initialize JPA EntityManagerFactory: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.SQLGrammarException: Unable to open JDBC Connection for DDL execution [Unknown database 'sports_management'] [n/a] 2025-10-13 10:22:33 [main] WARN o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.SQLGrammarException: Unable to open JDBC Connection for DDL execution [Unknown database 'sports_management'] [n/a] 2025-10-13 10:22:33 [main] INFO o.a.catalina.core.StandardService - Stopping service [Tomcat] 2025-10-13 10:22:33 [main] INFO o.s.b.a.l.ConditionEvaluationReportLogger - Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled. 2025-10-13 10:22:33 [main] ERROR o.s.boot.SpringApplication - Application run failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.SQLGrammarException: Unable to open JDBC Connection for DDL execution [Unknown database 'sports_management'] [n/a] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1775) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:325) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:323) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1173) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:936) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:616) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:753) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:455) at org.springframework.boot.SpringApplication.run(SpringApplication.java:323) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1342) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1331) at com.sports.SportsManagementApplication.main(SportsManagementApplication.java:13) Caused by: jakarta.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.SQLGrammarException: Unable to open JDBC Connection for DDL execution [Unknown database 'sports_management'] [n/a] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1822) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1771) ... 16 common frames omitted Caused by: org.hibernate.exception.SQLGrammarException: Unable to open JDBC Connection for DDL execution [Unknown database 'sports_management'] [n/a] at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:66) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:58) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:108) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:94) at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:74) at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:39) at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcConnection(ImprovedExtractionContextImpl.java:63) at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcDatabaseMetaData(ImprovedExtractionContextImpl.java:70) at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.processTableResultSet(InformationExtractorJdbcDatabaseMetaDataImpl.java:64) at org.hibernate.tool.schema.extract.internal.AbstractInformationExtractorImpl.getTables(AbstractInformationExtractorImpl.java:570) at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.getTablesInformation(DatabaseInformationImpl.java:122) at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:72) at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:232) at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:117) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:286) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.lambda$process$5(SchemaManagementToolCoordinator.java:145) at java.base/java.util.HashMap.forEach(HashMap.java:1429) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:142) at org.hibernate.boot.internal.SessionFactoryObserverForSchemaExport.sessionFactoryCreated(SessionFactoryObserverForSchemaExport.java:37) at org.hibernate.internal.SessionFactoryObserverChain.sessionFactoryCreated(SessionFactoryObserverChain.java:35) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:295) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:450) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1507) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:75) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ... 20 common frames omitted Caused by: java.sql.SQLSyntaxErrorException: Unknown database 'sports_management' at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:121) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:815) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:438) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:189) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:359) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:201) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:470) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:100) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:424) at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:46) ... 41 common frames omitted
10-14
`java.sql.SQLSyntaxErrorException: Unknown database 'sports_management'` 错误表明在尝试连接数据库时，指定的数据库名称 `sports_management` 并不存在。以下是几种解决此问题的方法： #### 1. 检查数据库是否...
org.springframework.transaction.CannotCreateTransactionException: Could not open JPA EntityManager for transaction; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:448) ~[spring-orm-5.2.15.RELEASE.jar:5.2.15.RELEASE] z这个包错是怎么回收
06-06
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect spring.jpa.hibernate.ddl-auto=update ``` --- #### 4. Spring ORM版本冲突 如果项目中存在多个版本的Spring ORM依赖，可能导致类...
（27页PPT）某省市照明智能管理系统解决方案.pptx
12-20
（27页PPT）某省市照明智能管理系统解决方案.pptx
资阳市第二自来水厂3dtiles模型
最新发布
12-20
资阳市第二自来水厂3dtiles模型
山西省暴雨洪水计算实用手册
12-20
山西省暴雨洪水计算实用手册
V-ASSISTANT-V1.03.7z
12-20
V-ASSISTANT_V1.03.7z
Python从零到壹全栈学习资源库_包含Python基础语法详解网络爬虫实战案例数据分析与可视化机器学习算法原理与实现自然语言处理与文本挖掘数据库操作与数据存储Sele.zip
12-20
Python从零到壹全栈学习资源库_包含Python基础语法详解网络爬虫实战案例数据分析与可视化机器学习算法原理与实现自然语言处理与文本挖掘数据库操作与数据存储Sele.zip
遗传算法路径规划的MATLAB实现
12-20
先展示下效果 https://pan.quark.cn/s/a4b39357ea24 遗传算法 - 简书 遗传算法的理论是根据达尔文进化论而设计出来的算法: 人类是朝着好的方向（最优解）进化，进化过程中，会自动选择优良基因，淘汰劣等基因。 遗传算法（英语：genetic algorithm (GA) ）是计算数学中用于解决最佳化的搜索算法，是进化算法的一种。 进化算法最初是借鉴了进化生物学中的一些现象而发展起来的，这些现象包括遗传、突变、自然选择、杂交等。 搜索算法的共同特征为： 首先组成一组候选解 依据某些适应性条件测算这些候选解的适应度 根据适应度保留某些候选解，放弃其他候选解 对保留的候选解进行某些操作，生成新的候选解 遗传算法流程 遗传算法的一般步骤 my_fitness函数 评估每条染色体所对应个体的适应度 升序排列适应度评估值，选出 前 parent_number 个 个体作为 待选 parent 种群（适应度函数的值越小越好） 从 待选 parent 种群 中随机选择 2 个个体作为父方和母方。 抽取父母双方的染色体，进行交叉，产生 2 个子代。 （交叉概率） 对子代（parent + 生成的 child）的染色体进行变异。 （变异概率） 重复3,4,5步骤，直到新种群（parentnumber + childnumber）的产生。 循环以上步骤直至找到满意的解。 名词解释 交叉概率：两个个体进行交配的概率。 例如，交配概率为0.8，则80%的“夫妻”会生育后代。 变异概率：所有的基因中发生变异的占总体的比例。 GA函数 适应度函数 适应度函数由解决的问题决定。 举一个平方和的例子。 简单的平方和问题 求函数的最小值，其中每个变量的取值区间都是 [-1, ...
2025-11-18 18:36:23 - HikariPool-1 - Exception during pool initialization. java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:130) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:825) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:446) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:239) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:188) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:181) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:272) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:223) at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:175) at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:295) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:252) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:223) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:173) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1460) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1494) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1168) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:919) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:591) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:409) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) at com.example.customsgoodssystem.CustomsGoodsSystemApplication.main(CustomsGoodsSystemApplication.java:10) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:569) at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) 2025-11-18 18:36:23 - HHH000342: Could not obtain connection to query metadata java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:130) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:825) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:446) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:239) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:188) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:181) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:272) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:223) at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:175) at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:295) at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:252) at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:223) at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:173) at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:127) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1460) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1494) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1168) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:919) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:591) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:409) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) at com.example.customsgoodssystem.CustomsGoodsSystemApplication.main(CustomsGoodsSystemApplication.java:10) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:569) at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) 2025-11-18 18:36:23 - HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect 2025-11-18 18:36:23 - HikariPool-1 - Starting... 2025-11-18 18:36:24 - HikariPool-1 - Exception during pool initialization. java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:130) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:825) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:446) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:239) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:188) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:181) at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:44) at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcConnection(ImprovedExtractionContextImpl.java:63) at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcDatabaseMetaData(ImprovedExtractionContextImpl.java:70) at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.processTableResultSet(InformationExtractorJdbcDatabaseMetaDataImpl.java:64) at org.hibernate.tool.schema.extract.internal.AbstractInformationExtractorImpl.getTables(AbstractInformationExtractorImpl.java:565) at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.getTablesInformation(DatabaseInformationImpl.java:122) at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:68) at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:220) at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:123) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:196) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:85) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:335) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:471) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1498) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1168) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:919) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:591) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:409) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) at com.example.customsgoodssystem.CustomsGoodsSystemApplication.main(CustomsGoodsSystemApplication.java:10) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:569) at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) 2025-11-18 18:36:24 - SQL Error: 1045, SQLState: 28000 2025-11-18 18:36:24 - Access denied for user 'root'@'localhost' (using password: YES) 2025-11-18 18:36:24 - Failed to initialize JPA EntityManagerFactory: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution 2025-11-18 18:36:24 - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution 2025-11-18 18:36:24 - Stopping service [Tomcat] 2025-11-18 18:36:24 - Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2025-11-18 18:36:25 - Application run failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1168) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:919) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:591) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:409) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) at com.example.customsgoodssystem.CustomsGoodsSystemApplication.main(CustomsGoodsSystemApplication.java:10) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:569) at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ... 24 common frames omitted Caused by: org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99) at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:71) at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcConnection(ImprovedExtractionContextImpl.java:63) at org.hibernate.tool.schema.internal.exec.ImprovedExtractionContextImpl.getJdbcDatabaseMetaData(ImprovedExtractionContextImpl.java:70) at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.processTableResultSet(InformationExtractorJdbcDatabaseMetaDataImpl.java:64) at org.hibernate.tool.schema.extract.internal.AbstractInformationExtractorImpl.getTables(AbstractInformationExtractorImpl.java:565) at org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl.getTablesInformation(DatabaseInformationImpl.java:122) at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:68) at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:220) at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:123) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:196) at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:85) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:335) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:471) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1498) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ... 28 common frames omitted Caused by: java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:130) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:825) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:446) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:239) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:188) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:181) at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:44) ... 44 common frames omitted
11-19
在Spring Boot应用中使用Hikari连接池和Hibernate连接MySQL数据库时出现 `java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)` 错误，通常意味着数据库拒绝了使用提供的用户名和密码进行的连接尝试。以下是一些可能的解决办法： ### 1. 检查数据库密码 确保在Spring Boot配置文件（如 `application.properties` 或 `application.yml`）中配置的数据库密码正确。如果不确定密码是否正确，可以在MySQL命令行中尝试使用相同的用户名和密码登录数据库。 ```properties spring.datasource.url=jdbc:mysql://localhost:3306/your_database_name spring.datasource.username=root spring.datasource.password=your_correct_password spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver spring.jpa.hibernate.ddl-auto=update spring.jpa.show-sql=true ``` 如果忘记了数据库密码，可以考虑重置密码： ```sql -- 使用root用户登录MySQL ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password'; FLUSH PRIVILEGES; ``` ### 2. 检查数据库用户权限 确保 `root` 用户具有从 `localhost` 连接到数据库的权限。可以使用以下命令授予权限： ```sql -- 授予root用户从localhost连接到所有数据库的所有权限 GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY 'your_password'; FLUSH PRIVILEGES; ``` ### 3. 检查防火墙设置 确保防火墙没有阻止Spring Boot应用程序与MySQL数据库之间的通信。默认情况下，MySQL使用3306端口进行通信。可以检查防火墙规则，确保该端口是开放的。 ```bash # 以CentOS为例，开放3306端口 sudo firewall-cmd --zone=public --add-port=3306/tcp --permanent sudo firewall-cmd --reload ``` ### 4. 检查MySQL配置 确保MySQL配置允许远程连接（如果需要）。编辑MySQL配置文件（通常是 `my.cnf` 或 `my.ini`），找到 `bind-address` 配置项，将其设置为 `0.0.0.0` 以允许所有IP地址连接： ```ini [mysqld] bind-address = 0.0.0.0 ``` 修改配置文件后，重启MySQL服务： ```bash sudo systemctl restart mysql ``` ### 5. 检查数据库URL 确保在Spring Boot配置文件中配置的数据库URL正确。URL应该包含正确的主机名、端口号和数据库名称。 ```properties spring.datasource.url=jdbc:mysql://localhost:3306/your_database_name ``` ### 6. 重新生成数据库密码 可以使用Druid工具重新生成MySQL数据库密码。以下是具体步骤： ```bash # CMD命令进入本地仓库druid的jar包存放路径 D:\Maven\repository\repositoryStore\com\alibaba\druid\1.1.21 # 其中root为待加密的明文密码 java -cp ./druid-1.1.21.jar com.alibaba.druid.filter.config.ConfigTools root ``` 取生成的 `publicKey` 和 `password` 到配置文件中即可。
评论
成就一亿技术人!
拼手气红包6.0元
还能输入1000个字符
 
红包 添加红包
表情包 插入表情
表情包 代码片
 条评论被折叠 查看
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付：10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。

余额充值