springmvc学习笔记(8)-springmvc整合mybatis之service

两两归鸿欲破群，依依还似北归人。
遥知朔漠多风雪，更待江南半月春。
—-宋·苏轼《惠崇春江晚景二首·其二》

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定义service

1、定义service接口

package com.echodemo.springmvcmybatis.service;

import com.echodemo.springmvcmybatis.bean.ItemsCustom;
import com.echodemo.springmvcmybatis.bean.ItemsQueryVo;

import java.util.List;

public interface ItemsService {

    // 查询商品列表
    List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo) throws Exception;
}

2、定义service实现类

package com.echodemo.springmvcmybatis.service.Impl;

import com.echodemo.springmvcmybatis.bean.ItemsCustom;
import com.echodemo.springmvcmybatis.bean.ItemsQueryVo;
import com.echodemo.springmvcmybatis.mapper.ItemsMapperCustom;
import com.echodemo.springmvcmybatis.service.ItemsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class ItemsServiceImpl implements ItemsService {

    @Autowired
    private ItemsMapperCustom itemsMapperCustom;

    @Override
    public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo) throws Exception {
        return itemsMapperCustom.findItemsList(itemsQueryVo);
    }
}

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在spring容器配置service

在resources/spring下创建applicationContext-service.xml，文件中配置service。

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.2.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

    <!-- 商品管理的service -->
    <bean id="itemsService" class="com.echodemo.springmvcmybatis.service.Impl.ItemsServiceImpl"/>

</beans>

---

事务控制

在resources/spring下创建applicationContext-transaction.xml，在applicationContext-transaction.xml中使用spring声明式事务控制方法。

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.2.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

    <!-- 事务管理器
        对mybatis操作数据库的事务控制，spring使用jdbc的事务控制
    -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 数据源
            dataSource在applicationContext-dao.xml中配置了
         -->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 传播行为 -->
            <tx:method name="save*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="insert*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
        </tx:attributes>
    </tx:advice>

    <!-- aop -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.echodemo.springmvcmybatis.service.Impl.*.*(..))"/>
    </aop:config>

</beans>