java SSM第三章学习内容（Spring与Mybatis整合的方式四：注解，五：事务，六：事务注解）

四.注解

基本步骤：

1.导jar包到lib下并添加依赖
2.把applicationContext.xml及mybatis-config.xml整合到recources包下

1.根据数据库创建实体类
2.mybatis-config.xml的配置固定以下参数

3.写个接口给于方法（如增删改查）

4.在LianxiMapper.xml配置SQL语句

5.新建LianxiServicet并使用注解(@Service代表在配置文件加入Bean，而@Autowired代表引用相应的类)

6.在applicationContext.xml文件中添加配置，需要加入扫描注解

7.测试类

部分参考代码：

LianxiServicet：

@Service("LianxiServices")
public class LianxiServicet implements LianxiMapper {
       @Autowired
       private LianxiMapper lianxiMapper;
       private Lianxi lianxi;
       public List<Lianxi> selectAll() {
           // TODO Auto-generated method stub
           return lianxiMapper.selectAll();
       }
       public int updateAll(Lianxi lianxi) {
           return lianxiMapper.updateAll(lianxi);
       }
       public int insertAll(Lianxi lianxi) {
           return lianxiMapper.insertAll(lianxi);
       }
       public int delectAll(Lianxi lianxi) {
           return lianxiMapper.delectAll(lianxi);
       }
       public LianxiMapper getLianxiMapper() {
           return lianxiMapper;
       }
       public void setLianxiMapper(LianxiMapper lianxiMapper) {
           this.lianxiMapper = lianxiMapper;
       }
}

LianxiMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dao.LianxiMapper">

   <select id="selectAll" resultType="Lianxi">
       select * from Lianxi
   </select>

   <update id="updateAll" parameterType="Lianxi">
       update Lianxi set model=#{model} where id=#{id}
   </update>

   <insert id="insertAll" parameterType="Lianxi">
       insert into Lianxi values(#{id},#{model},#{ofprice},#{ofDate})
   </insert>

   <delete id="delectAll" parameterType="Lianxi">
       delete from Lianxi where id=#{id}
   </delete>
</mapper>

applicationContext.xml

<?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:p="http://www.springframework.org/schema/p"
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/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">

<bean class="org.mybatis.spring.mapper.MapperFactoryBean">
       <property name="mapperInterface" value="com.dao.LianxiMapper" />
       <property name="sqlSessionFactory" ref="sqlSessionFactory" />
   </bean>
   <context:component-scan base-package="com.servicet"/>
   </beans>

Lianxi1Test测试类：

public class Lianxi1Test {
   public static void main(String[] args) {
       ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
       LianxiServicet lianxiServicet=(LianxiServicet)context.getBean("LianxiServices");
       //查询
       List<Lianxi> list = lianxiServicet.selectAll();
       for (Lianxi li:list) {
           System.out.println(li.getId()+li.getModel());
       }

       /*//更改
       Lianxi lx = new Lianxi(4,"嘻嘻");
       int num = lianxiServicet.updateAll(lx);
       System.out.println(num);*/

       /*//增加
       Date date =null;
       try {
           date = new SimpleDateFormat("yyyy-MM-dd").parse("2005-12-12");
       } catch (ParseException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
       Lianxi lx2 = new Lianxi(6,"哈哈",200.87,date);
       int num2 = lianxiServicet.insertAll(lx2);
       System.out.println(num2);*/

       /*//删除
       Lianxi lx = new Lianxi(6);
       int num = lianxiServicet.delectAll(lx);
       System.out.println(num);*/
   }
}

五.事务

基本步骤：

1.导jar包到lib下并添加依赖（这里多了一个jar包，tx见下图）
2.把applicationContext.xml及mybatis-config.xml整合到recources包下

3.在applicationContext.xml配置一下头部链接以及配置事务，切面，要修改名称

参考代码：

applicationContext.xml

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

<property name="dataSource" ref="dataSource" />

<property name="configLocation" value="classpath:mybatis-config.xml" />
</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<property name="basePackage" value="com.dao" />
</bean>

六：事务注解

基本步骤：

1.导jar包到lib下并添加依赖（这里多了一个jar包，tx）
2.把applicationContext.xml及mybatis-config.xml整合到recources包下
3.在applicationContext.xml配置一下头部链接以及配置事务，切面，要修改名称
(要使用扫描<context:component-scan base-package="com.servicet" />)
4.在需要使用事务的类中进行添加注解
@Transactional
@Override
@Transactional(propagation = Propagation.SUPPORTS)

参考代码：

applicationContext.xml

<context:component-scan base-package="com.servicet" />

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<tx:advice id="txAdvice">
<tx:attributes>
<tx:method name="select*" propagation="SUPPORTS" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="delect*" propagation="REQUIRED" />
<tx:method name="*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>

<aop:config proxy-target-class="true">
<aop:pointcut id="serviceMethod"
expression="execution(* com.servicet..*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethod" />
</aop:config>
</beans>

LianxiServicet：

@Transactional
@Service("LianxiServices")
public class LianxiServicet implements LianxiMapper {
       @Autowired

       private LianxiMapper lianxiMapper;
       private Lianxi lianxi;
       @Override
       @Transactional(propagation = Propagation.SUPPORTS)
       public List<Lianxi> selectAll() {
           // TODO Auto-generated method stub
           return lianxiMapper.selectAll();
       }
       public int updateAll(Lianxi lianxi) {
           return lianxiMapper.updateAll(lianxi);
       }
       public int insertAll(Lianxi lianxi) {
           return lianxiMapper.insertAll(lianxi);
       }
       public int delectAll(Lianxi lianxi) {
           return lianxiMapper.delectAll(lianxi);
       }
       public LianxiMapper getLianxiMapper() {
           return lianxiMapper;
       }
       public void setLianxiMapper(LianxiMapper lianxiMapper) {
           this.lianxiMapper = lianxiMapper;
       }
}

java SSM第三章学习内容（Spring与Mybatis整合的方式四：注解，五：事务，六：事务注解）

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