SpringBoot报错（十） WARN：ationConfigEmbeddedWebApplicationContext

SpringBoot DataSource配置异常解析

最新推荐文章于 2025-02-28 10:49:50 发布

原创最新推荐文章于 2025-02-28 10:49:50 发布 · 2.4k 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#springboot

springboot 专栏收录该内容

19 篇文章

订阅专栏

本文解析了SpringBoot应用中因DataSource配置不当导致的启动失败问题，并提供了详细的解决方案及配置样例。

错误如下
问题
解决办法
- - 以下仅仅作为参考
  - 如果觉得不错，请送我1毛钱

错误如下

2017-12-25 09:54:11.645  WARN 1852 --- [  restartedMain] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Tomcat.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.tomcat.jdbc.pool.DataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (the profiles "dev" are currently active).  
2017-12-25 09:54:11.660  INFO 1852 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]  
Disconnected from the target VM, address: '127.0.0.1:53388', transport: 'socket'  
2017-12-25 09:54:11.676  INFO 1852 --- [  restartedMain] utoConfigurationReportLoggingInitializer :   

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.  
2017-12-25 09:54:11.676 ERROR 1852 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   :   

***************************  
APPLICATION FAILED TO START  
***************************  

Description:  

Cannot determine embedded database driver class for database type NONE  

Action:  

If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (the profiles "dev" are currently active).

问题

这样的错误，一看就明白了，问题出现在了dataSource这儿
dataSource代表数据源，所以完全可以想象得到问题出现在哪里。我配置的是“yaml”，你们可以进行相应的修改

解决办法

以下仅仅作为参考

spring:  
  datasource:  
    url: jdbc:mysql://localhost:3306/users?useUnicode=true&characterEncoding=utf-8&useSSL=false  
    driver-class-name: com.mysql.jdbc.Driver  
    username: root  
    password:  
    minIdle: 5  
    maxActive: 100  
    initialSize: 10  
    maxWait: 60000  
    timeBetweenEvictionRunsMillis: 60000  
    minEvictableIdleTimeMillis: 300000  
    validationQuery: select 'x'  
    testWhileIdle: true  
    testOnBorrow: false  
    testOnReturn: false  
    poolPreparedStatements: true  
    maxPoolPreparedStatementPerConnectionSize: 50  
    removeAbandoned: true  
    # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙  
    filters: stat,wall,log4j,logback  
    cachePrepStmts: true  # 开启二级缓存  
    # 合并多个DruidDataSource的监控数据  
    useGlobalDataSourceStat: true

如果觉得不错，请送我1毛钱