springmvc+Hibernate+JPA(混合事务)解读_Java

springmvc+hibernate+jpa(混合事务)

最近发觉 spring-data-jpa 比较好用。

我在springcloud的项目中使用后，也尝试在springmvc中增加 jpa。

但是老项目用的是hibernate，在使用添加jpa后，事务出现了一些问题。

解决方案

配置文件

1 配置hibernate事务（transactionmanager）

    <!-- 事物管理器配置  -->
        <bean id="transactionmanager" class="org.springframework.orm.hibernate5.hibernatetransactionmanager">
            <property name="sessionfactory" ref="sessionfactory" />
        </bean>
        <tx:annotation-driven transaction-manager="transactionmanager" proxy-target-class="true" />
    <!--  hibernate  -->

2 配置jpa事务（transactionmanager_jpa）

<!-- jpa 事务配置 -->
    <bean id="transactionmanager_jpa" class="org.springframework.orm.jpa.jpatransactionmanager">
        <property name="entitymanagerfactory" ref="entitymanagerfactory"/>
    </bean>

    <!-- spring data jpa配置 -->
    <jpa:repositories base-package="com.kintech.dao.*"  transaction-manager-ref="transactionmanager_jpa" entity-manager-factory-ref="entitymanagerfactory"/>

    <!-- 使用annotation定义事务 -->
    <tx:annotation-driven transaction-manager="transactionmanager_jpa" proxy-target-class="true" />

配置全本：

<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:p="http://www.springframework.org/schema/p" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
       xsi:schemalocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context-4.3.xsd
                           http://www.springframework.org/schema/mvc
                           http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
                           http://www.springframework.org/schema/aop
						   http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
						   http://www.springframework.org/schema/tx
                           http://www.springframework.org/schema/tx/spring-tx-4.3.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd"
       default-lazy-init="true">

    <!--配置数据源-->
    <bean id="datasource" class="com.mchange.v2.c3p0.combopooleddatasource" destroy-method="close">
        <property name="driverclass" value="${jdbc.driver}" />  <!--数据库连接驱动-->
        <property name="jdbcurl" value="${jdbc.jdbcurl}" />     <!--数据库地址-->
        <property name="user" value="${jdbc.user}" />   <!--用户名-->
        <property name="password" value="${jdbc.password}" />   <!--密码-->
        <property name="maxpoolsize" value="${jdbc.maxpoolsize}" />      <!--最大连接数-->
        <property name="minpoolsize" value="${jdbc.minipoolsize}" />       <!--最小连接数-->
        <property name="initialpoolsize" value="${jdbc.initialpoolsize}" />      <!--初始化连接池内的数据库连接-->
        <property name="maxidletime" value="${jdbc.maxidletime}" />  <!--最大空闲时间-->
    </bean>

    <!--  hibernate  -->
    <!--配置session工厂-->
    <bean id="sessionfactory" class="org.springframework.orm.hibernate5.localsessionfactorybean">
        <property name="datasource" ref="datasource" />
        <property name="packagestoscan" value="com.kintech.model" />
        <property name="hibernateproperties">
            <props>
                <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop> <!--hibernate根据实体自动生成数据库表-->
                <prop key="hibernate.dialect">${hibernate.dialect}</prop>   <!--指定数据库方言-->
                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>     <!--在控制台显示执行的数据库操作语句-->
                <prop key="hibernate.format_sql">${hibernate.format_sql}</prop>     <!--在控制台显示执行的数据哭操作语句（格式）-->
                <prop key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
                <prop key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>  <!-- 查询缓存 -->
                <prop key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
                <prop key="hibernate.cache.region.factory_class">${hibernate.cache.region.factory_class}</prop>
            </props>
        </property>
    </bean>
    <!-- 事物管理器配置  -->
        <bean id="transactionmanager" class="org.springframework.orm.hibernate5.hibernatetransactionmanager">
            <property name="sessionfactory" ref="sessionfactory" />
        </bean>
        <tx:annotation-driven transaction-manager="transactionmanager" proxy-target-class="true" />
    <!--  hibernate  -->

    <!--  jpa  -->
    <!-- jpa实体管理器工厂 -->
    <bean id="entitymanagerfactory" name="jpaentitymanagerfactory"
          class="org.springframework.orm.jpa.localcontainerentitymanagerfactorybean">
        <property name="datasource" ref="datasource" />
        <property name="jpavendoradapter" ref="hibernatejpavendoradapter" />
        <!-- 加入定制化包路径 -->
        <property name="packagestoscan" value="com.kintech.model.domain.*" />

        <property name="jpaproperties">
            <props>
                <prop key="hibernate.current_session_context_class">thread</prop>
                <prop key="hibernate.hbm2ddl.auto">none</prop><!-- validate/update/create -->
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>

                <!-- 建表的命名规则 -->
                <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.improvednamingstrategy</prop>

            </props>
        </property>
    </bean>

    <!-- 设置jpa实现厂商的特定属性 -->
    <bean id="hibernatejpavendoradapter"
          class="org.springframework.orm.jpa.vendor.hibernatejpavendoradapter">
        <property name="databaseplatform" value="${hibernate.dialect}"/>
    </bean>

    <!-- jpa 事务配置 -->
    <bean id="transactionmanager_jpa" class="org.springframework.orm.jpa.jpatransactionmanager">
        <property name="entitymanagerfactory" ref="entitymanagerfactory"/>
    </bean>

    <!-- spring data jpa配置 -->
    <jpa:repositories base-package="com.kintech.dao.*"  transaction-manager-ref="transactionmanager_jpa" entity-manager-factory-ref="entitymanagerfactory"/>

    <!-- 使用annotation定义事务 -->
    <tx:annotation-driven transaction-manager="transactionmanager_jpa" proxy-target-class="true" />
    <!--  jpa  -->

</beans>

修改@transactional

在使用jpa时，注明

@transactional("transactionmanager_jpa")

@transactional("transactionmanager_jpa")
    @override
    public model_res add(model_req req) {
        //jpa dao
        model entity = dao.save(reqdata);
        return res;
    }

原来的hibernate不用改变(因为)