[color=red][b]问题描述：[/b][/color]
整合spring3与hibernate4时，发生错误：[u]nested exception is org.hibernate.HibernateException: No Session found for current thread[/u]
之后查找资料，添加[u]：thread[/u]属性，报错：org.hibernate.HibernateException: createQuery is not valid without active transaction，
查找资料说，删除上面我添加的那个属性，我被陷入死循环了。
[color=red][b]代码如下[/b][/color]
[b]配置文件：[/b]
[code="java"]
<?xml version="1.0" encoding="UTF-8"?>
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:config/jdbc.properties</value>
</list>
</property>
</bean>
<!--数据源-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass">
<value>${mysql.driver}</value>
</property>
<property name="jdbcUrl">
<value>${mysql.url}</value>
</property>
<property name="user">
<value>${mysql.userName}</value>
</property>
<property name="password">
<value>${mysql.password}</value>
</property>
<property name="acquireIncrement">
<value>${c3p0.acquireIncrement}</value>
</property>
<property name="initialPoolSize">
<value>${c3p0.initialPoolSize}</value>
</property>
<property name="minPoolSize">
<value>${c3p0.minPoolSize}</value>
</property>
<property name="maxPoolSize">
<value>${c3p0.maxPoolSize}</value>
</property>
<property name="maxIdleTime">
<value>${c3p0.maxIdleTime}</value>
</property>
<property name="idleConnectionTestPeriod">
<value>${c3p0.idleConnectionTestPeriod}</value>
</property>
<property name="maxStatements">
<value>${c3p0.maxStatements}</value>
</property>
<property name="numHelperThreads">
<value>${c3p0.numHelperThreads}</value>
</property>
<property name="testConnectionOnCheckout">
<value>${c3p0.testConnectionOnCheckout}</value>
</property>
<property name="preferredTestQuery">
<value>${c3p0.preferredTestQuery}</value>
</property>
</bean>
<!-- Session 工厂配置 -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<list>
<value>com..entity</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<!-- 解决no session found -->
<prop key="hibernate.current_session_context_class">thread</prop>
</props>
</property>
</bean>
<!-- 配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- 配置事物管理器，在*ServiceImpl里写@Transactional就可以启用事物管理 -->
<tx:annotation-driven transaction-manager="transactionManager" />
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 方法对应的传播属性 -->
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="merge*" propagation="REQUIRED" />
<tx:method name="del*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="put*" propagation="REQUIRED" />
<tx:method name="use*" propagation="REQUIRED"/>
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="count*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="list*" propagation="REQUIRED" read-only="true" />
<tx:method name="*" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 事务控制位置，一般在业务层service -->
<aop:config>
<aop:pointcut id="txPointcut" expression="execution(* com..service..*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>
</aop:config>
[/code]
[b]DAO[/b]
[code="java"]
package com.test;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
public class BaseDao {
@Autowired
private SessionFactory sessionFactory;
public Session getCurrentSession() {
return sessionFactory.getCurrentSession();
}
}
[/code]
[code="java"]
package com.test.dao.impl;
import java.util.List;
import org.hibernate.Query;
import org.springframework.stereotype.Repository;
import com.test.BaseDao;
import com.test.dao.IUserDao;
import com.test.entity.User;
@Repository
public class UserDaoImpl extends BaseDao implements IUserDao{
@SuppressWarnings("unchecked")
@Override
public List<User> findAllUsers() {
String hql = "FROM User";
Query query = getCurrentSession().createQuery(hql);
return query.list();
}
}
[/code]
各层次的ioc都OK的，问题出在哪里，或者解答下原因也可以，我自己查找资料，谢谢了。
在web.xml配置
<filter>
<filter-name>lazyLoadingFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>flushMode</param-name>
<param-value>AUTO</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>lazyLoadingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
[code="java"]
是否是这里配置错误?
[/code]
你加入了 注解的扫描了吗？
<!-- 启动注解扫描 -->
com..entity
改成这样试试 加载这个包下的所有实体类
com..entity*
没有获取到受事务管理的session
hibernate4获取session有一个限制，就是session必须在事务级别上才能获取到
你可以在你的service加上事务配置就没有问题了
例如
[code="java"]
/aop:config
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="save*" propagation="REQUIRED" isolation="DEFAULT" />
<tx:method name="load*" propagation="REQUIRED" isolation="DEFAULT" read-only="true" />
<tx:method name="get*" propagation="REQUIRED" isolation="DEFAULT" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" isolation="DEFAULT" read-only="true" />
<tx:method name="list*" propagation="REQUIRED" isolation="DEFAULT" read-only="true" />
<tx:method name="*" propagation="REQUIRED" isolation="DEFAULT" />
</tx:attributes>
</tx:advice>[/code]
方法有点问题
public Session getSession() {
Session session = null;
try {
session = sessionFactory.getCurrentSession();
} catch (HibernateException he) {
session = sessionFactory.openSession();
}
return session;
}