我在设置一个能够回滚的JUnit测试时遇到了麻烦。在决定提问之前，我已经阅读了几篇相关帖子，但似乎没有一个可以解决我的问题。
第二个测试用例失败了，因为第一个测试用例中插入并持久化了数据。
这是JUnit测试代码：
package com.company.group.spring.dao;
import static org.junit.Assert.assertNotNull;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.test.annotation.Rollback;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.TestExecutionListeners;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.support.DependencyInjectionTestExecutionListener;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.test.context.transaction.TransactionalTestExecutionListener;
import org.springframework.transaction.annotation.Transactional;
import com.company.group.spring.model.BusObj;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:NAME_OF_CONFIG_FILE.xml"})
@Transactional
@TransactionConfiguration(transactionManager = "txManager", defaultRollback = true)
@TestExecutionListeners({TransactionalTestExecutionListener.class,
DependencyInjectionTestExecutionListener.class})
public class PerPartsWCDAOTest {
@Autowired
@Qualifier("myBusObjDAO")
private BusObjDAO busObj_dao;
@Transactional
@Test
public void testInsertRollback() {
try {
BusObj busObj = new BusObj("some data...");
assertNotNull(busObj_dao);
assertNotNull(busObj);
busObj_dao.insert(perPartWC);
}
catch (NullPointerException e) {
e.printStackTrace();
}
}
@Transactional
@Rollback(false)
@Test
public void testInsert() {
BusObj busObj2 = new BusObj("some data...");
busObj_dao.insert(perPartWC2);
}
}
这是DAOImpl类（我试图测试的类）：
```
以下是DAOImpl类（即我想要测试的类）：
```package com.company.group.spring.dao;
import javax.sql.DataSource;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.namedparam.BeanPropertySqlParameterSource;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
import org.springframework.jdbc.core.namedparam.SqlParameterSource;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import com.company.group.spring.model.BusObj;
@Repository("myBusObjDAO")
public class myBusObjDAOImpl implements myBusObjDAO {
private NamedParameterJdbcTemplate jdbcTemplate;
@Autowired
public void setDataSource(DataSource dataSource) {
this.jdbcTemplate = new NamedParameterJdbcTemplate(dataSource);
}
@Override
public void insert(BusObj someObj) {
String sql = "insert into TABLE (args...) " +
"VALUES (:named_params....)";
SqlParameterSource paramSource = new BeanPropertySqlParameterSource(someObj);
jdbcTemplate.update(sql, paramSource);
}
相关配置的一部分：
<tx:annotation-driven transaction-manager="txManager" proxy-target-class="true" />
<bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@SERVER:PORT:DB"/>
<property name="username" value="USER"/>
<property name="password" value="XXXXXX"/>
</bean>
编辑：+调试打印
2012-12-18 08:50:42,177 [main] DEBUG [org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction()] Creating new transaction with name [com.company.group.spring.service.MyClassService.create]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT
2012-12-18 08:50:42,342 [main] DEBUG [org.springframework.orm.hibernate4.HibernateTransactionManager.doBegin()] Opened new Session [SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=[] updates=[] deletions=[] collectionCreations=[] collectionRemovals=[] collectionUpdates=[] unresolvedInsertDependencies=UnresolvedEntityInsertActions[]])] for Hibernate transaction
2012-12-18 08:50:42,344 [main] DEBUG [org.springframework.orm.hibernate4.HibernateTransactionManager.doBegin()] Preparing JDBC Connection of Hibernate Session [SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=[] updates=[] deletions=[] collectionCreations=[] collectionRemovals=[] collectionUpdates=[] unresolvedInsertDependencies=UnresolvedEntityInsertActions[]])]
2012-12-18 08:50:42,361 [main] DEBUG [org.springframework.orm.hibernate4.HibernateTransactionManager.doBegin()] Exposing Hibernate transaction as JDBC transaction [org.hibernate.engine.jdbc.internal.proxy.ConnectionProxyHandler@128647a[valid=true]]
2012-12-18 08:50:42,390 [main] DEBUG [org.springframework.jdbc.core.JdbcTemplate.update()] Executing prepared SQL update
2012-12-18 08:50:42,391 [main] DEBUG [org.springframework.jdbc.core.JdbcTemplate.execute()] Executing prepared SQL statement [insert into TABLE (args...) VALUES (?, ?, SYSDATE,?, ?, SYSDATE, ?,?, ?)]
2012-12-18 08:50:42,391 [main] DEBUG [org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection()] Fetching JDBC Connection from DataSource
2012-12-18 08:50:42,657 [main] DEBUG [org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection()] Registering transaction synchronization for JDBC Connection
2012-12-18 08:50:42,671 [main] DEBUG [org.springframework.jdbc.core.JdbcTemplate$2.doInPreparedStatement()] SQL update affected 1 rows
2012-12-18 08:50:42,678 [main] DEBUG [org.springframework.jdbc.datasource.DataSourceUtils.doReleaseConnection()] Returning JDBC Connection to DataSource
2012-12-18 08:50:42,688 [main] DEBUG [org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback()] Initiating transaction rollback
2012-12-18 08:50:42,688 [main] DEBUG [org.springframework.orm.hibernate4.HibernateTransactionManager.doRollback()] Rolling back Hibernate transaction on Session [SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=[] updates=[] deletions=[] collectionCreations=[] collectionRemovals=[] collectionUpdates=[] unresolvedInsertDependencies=UnresolvedEntityInsertActions[]])]
2012-12-18 08:50:42,693 [main] DEBUG [org.springframework.orm.hibernate4.HibernateTransactionManager.doCleanupAfterCompletion()] Closing Hibernate Session [SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=[] updates=[] deletions=[] collectionCreations=[] collectionRemovals=[] collectionUpdates=[] unresolvedInsertDependencies=UnresolvedEntityInsertActions[]])] after transaction
更新： 我注意到日志中正在尝试回滚一个Hibernate事务(但这是JDBC)。然后我注意到"txManager"的类目前为org.springframework.orm.hibernate4.HibernateTransactionManager，因此我尝试使用org.springframework.jdbc.datasource.DataSourceTransactionManager并重启应用，回滚工作正常了。所以我认为我的问题更具体地说是如何配置使用Hibernate和JDBC... 我仍然不知道哪里出了问题。