SSH整合--单独测试hibenate--Junit测试

本文介绍了一个在测试Hibernate框架时遇到的ServiceException异常问题及其解决方法。问题源于未正确配置Hibernate的dialect属性,通过修改测试代码并正确加载配置文件解决了该问题。

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当在整合ssh单独测试hibenate出现以下问题时,别犹豫,那是因为你代码敲少了。
org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:244)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:208)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
	at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
	at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:217)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)
	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)
	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83)
	at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:418)
	at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:692)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724)
	at cn.itcast.test.HibenateTest.fun1(HibenateTest.java:19)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:539)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:761)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:461)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:207)
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
	at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100)
	at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54)
	at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137)
	at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
	at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:234)
	... 37 more
hibernate.cfg.xml文件代码:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
   <session-factory>
        
		 <!-- 数据库驱动 -->
		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
		 <!-- 数据库url -->
		<property name="hibernate.connection.url">jdbc:mysql:///crm_32</property>
		 <!-- 数据库连接用户名 -->
		<property name="hibernate.connection.username">root</property>
		 <!-- 数据库连接密码 -->
		<property name="hibernate.connection.password">123456</property>
		<!-- 数据库方言
		 -->
		<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
		
		<!-- 将hibernate生成的sql语句打印到控制台 -->
		<property name="hibernate.show_sql">true</property>
		<!-- 将hibernate生成的sql语句格式化(语法缩进) -->
		<property name="hibernate.format_sql">true</property>
		<!-- 
		## auto schema export  自动导出表结构. 自动建表
		#hibernate.hbm2ddl.auto create		自动建表.每次框架运行都会创建新的表.以前表将会被覆盖,表数据会丢失.(开发环境中测试使用)
		#hibernate.hbm2ddl.auto create-drop 自动建表.每次框架运行结束都会将所有表删除.(开发环境中测试使用)
		#hibernate.hbm2ddl.auto update(推荐使用) 自动生成表.如果已经存在不会再生成.如果表有变动.自动更新表(不会删除任何数据).
		#hibernate.hbm2ddl.auto validate	校验.不自动生成表.每次启动会校验数据库中表是否正确.校验失败.
		 -->
		<property name="hibernate.hbm2ddl.auto">update</property>
		<!-- 引入orm元数据
			路径书写: 填写src下的路径
		 -->
		<mapping resource="cn/itcast/domain/Customer.hbm.xml" />
		<mapping resource="cn/itcast/domain/LinkMan.hbm.xml" />
		<mapping resource="cn/itcast/domain/User.hbm.xml" />
   </session-factory>
</hibernate-configuration>





测试代码:
package cn.itcast.test;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.junit.Test;

import cn.itcast.domain.User;

//测试hibenate框架
public class HibenateTest {

	@Test
	public void fun1() {
		
		Configuration conf = new Configuration();
		
		SessionFactory sf = conf.buildSessionFactory();
		
		Session session = sf.openSession();
		
		Transaction tx = session.beginTransaction();
		
		//-------------------------------------
		  User u = new User();
		  
		  u.setUser_code("tom");
		  u.setUser_name("汤姆");
		  u.setUser_password("1234");
		  
		  session.save(u);
		//--------------------------------------
		
		tx.commit();
		session.close();
		sf.close();
		
	}
}
在这个测试代码中,Configuration conf = new Configuration();没有使用configuare()方法,如果没有使用这个方法,hibenate就会在classpath下面寻找hibenate.properties文件,如果没有找到该文件,系统就会打印上面的那些信息,并抛出hibenateException异常。
测试代码修改如下:
package cn.itcast.test;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.junit.Test;

import cn.itcast.domain.User;

//测试hibenate框架
public class HibenateTest {

	@Test
	public void fun1() {
		
		Configuration conf = new Configuration().configure();
		
		SessionFactory sf = conf.buildSessionFactory();
		
		Session session = sf.openSession();
		
		Transaction tx = session.beginTransaction();
		
		//-------------------------------------
		  User u = new User();
		  
		  u.setUser_code("Lucy");
		  u.setUser_name("露丝");
		  u.setUser_password("1234");
		  
		  session.save(u);
		//--------------------------------------
		
		tx.commit();
		session.close();
		sf.close();
		
	}
}






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