spring jpa和mybatis整合

spring jpa和mybatis整合

前一阵子接手了一个使用SpringBoot 和spring-data-jpa开发的项目

后期新加入一个小伙伴，表示jpa相比mybatis太难用，多表联合的查询写起来也比较费劲，所以便加入了mybatis的支持

开始的时候

@Configuration
@EnableJpaRepositories("com.xxx.xxx.repository")
class JpaConfig

　　

使用这种方式去配置的jpa，遇到一个问题，就是能select 但是不能save，所以就修改为配置文件的方式：

下面直接上配置文件：

1、spring的配置

<?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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:task="http://www.springframework.org/schema/task"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd

        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd">

    <!-- 扫描注解文件 -->
    <context:component-scan base-package="com.xxx"/>
    <task:annotation-driven/>

    <bean id="springContextHolder" class="com.xxx.common.config.SpringContextHolder"
          lazy-init="false"></bean>

    <bean id="configProperties"
          class="org.springframework.beans.factory.config.PropertiesFactoryBean">
        <property name="locations">
            <list>
                <value>classpath*:jdbc.properties</value>
                <value>classpath*:app.properties</value>
            </list>
        </property>
    </bean>

    <bean id="propertyConfigurer"
          class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE"/>
        <property name="fileEncoding" value="UTF-8"/>
        <property name="properties" ref="configProperties"/>
    </bean>

    <!-- dataSource 配置 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init"
          destroy-method="close">
        <!-- 基本属性 url、user、password -->
        <!-- <property name="driverClassName" value="${ds.driverClassName}" /> -->
        <property name="url" value="${ds.url}"/>
        <property name="username" value="${ds.username}"/>
        <property name="password" value="${ds.password}"/>

        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="${ds.initialSize}"/>
        <property name="minIdle" value="${ds.minIdle}"/>
        <property name="maxActive" value="${ds.maxActive}"/>

        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="${ds.maxWait}"/>

        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="${ds.timeBetweenEvictionRunsMillis}"/>

        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="${ds.minEvictableIdleTimeMillis}"/>

        <property name="validationQuery" value="${ds.validationQuery}"/>
        <property name="testWhileIdle" value="${ds.testWhileIdle}"/>
        <property name="testOnBorrow" value="${ds.testOnBorrow}"/>
        <property name="testOnReturn" value="${ds.testOnReturn}"/>

        <!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
        <property name="poolPreparedStatements" value="${ds.poolPreparedStatements}"/>
        <property name="maxPoolPreparedStatementPerConnectionSize"
                  value="${ds.maxPoolPreparedStatementPerConnectionSize}"/>

        <!-- 配置监控统计拦截的filters -->
        <property name="filters" value="${ds.filters}"/>

        <!-- 关闭abanded连接时输出错误日志 -->
        <property name="logAbandoned" value="${ds.logAbandoned}"/>
    </bean>
    <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="typeAliasesPackage" value="com.xxx.culture.domain"/>
        <!-- 自动扫描mapping.xml文件 -->
        <property name="mapperLocations" value="classpath:mapper/**/*.xml"/>
    </bean>

    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.xxx.xxx.dao"/>

    </bean>

    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 事务管理 通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 对insert,update,delete 开头的方法进行事务管理,只要有异常就回滚 -->
            <tx:method name="insert*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
            <tx:method name="update*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
            <tx:method name="delete*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
            <tx:method name="remove*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
            <tx:method name="save*" propagation="REQUIRED" rollback-for="java.lang.Throwable"/>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="flush*" propagation="REQUIRED"/>
            <!-- select,count,get,find开头的方法,开启只读,提高数据库访问性能 -->
            <tx:method name="select*" read-only="true"/>
            <tx:method name="count*" read-only="true"/>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="search*" read-only="true"/>
            <!-- 对其他方法 使用默认的事务管理 -->
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>

    <!-- 事务 aop 配置 com.xxx.smp.service..*Impl.*(..)) -->
    <aop:config>
        <aop:pointcut id="serviceMethods"
                      expression="execution(* com.xxx.xxx.service..*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods"/>
    </aop:config>
    <!-- 配置使Spring采用CGLIB代理 -->
    <aop:aspectj-autoproxy proxy-target-class="true"/>
    <!-- 事务注解支持 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>

    <import resource="applicationContext-jpa.xml"/>
</beans>

2、jpa的配置

初始时遇到一个问题：jpa org.hibernate.LazyInitializationException: could not initialize proxy - no Session

在这儿找到了答案http://my.oschina.net/alexgaoyh/blog/313541

配置如下

<?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:tx="http://www.springframework.org/schema/tx"
       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-4.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd" >

    <bean id="entityManagerFactory"
          class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <!-- 指定数据源 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 指定Entity实体类包路径 -->
        <property name="packagesToScan">
            <list>
                <value>com.xxx.xxx.jpadomain</value>
            </list>
        </property>
        <!-- 指定JPA属性；如Hibernate中指定是否显示SQL的是否显示、方言等 -->
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <!-- 是否生成ddl文件 -->
                <property name="generateDdl" value="true"/>
                <!-- 是否展示sql -->
                <property name="showSql" value="false"/>
                <!-- 必要的数据库库使用的详细信息 -->
                <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect"/>
                <!-- mysql,自行选择 -->
                <property name="database" value="MYSQL"/>
            </bean>
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy
                </prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <prop key="hibernate.enable_lazy_load_no_trans">true</prop>
            </props>
        </property>
    </bean>

    <!-- Spring Data Jpa配置 -->

    <!-- 配置 启用扫描并自动创建代理的功能  factory-class="com.monk.base.jpa.PeakJpaRepositoryFactory"自己定义的bean注解方式，可以不写，直接注解所有包下的 -->
    <jpa:repositories base-package="com.xxx.xxx.repository"
                      transaction-manager-ref="transactionManager"
                      entity-manager-factory-ref="entityManagerFactory"/>

    <!-- Jpa 事务配置 -->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>

    <!-- 开启注解事务 -->
    <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>
</beans>

此文章转自：https://www.cnblogs.com/modprobe/p/5675809.html

感谢modprobe的分享