MyBatis+Spring整合CRUD

最近整了整MyBatis+Spring整合开发，网上也搜了搜相关资料或者博客，对于初学者来说 肯定是希望有现成的项目直接拷贝导入到工程跑起来就能看到效果。 建议即便是有现成项目，初学者一定要把配置运行的整个过程自己走一遍整个工程并不复杂 简单的CRUD 整个工程结构图如下：

 仍然采取三层架构模式进行 好了 直接上代码

 

 

    这里我注释掉了sqlSessionTemplate配置，下面在daoImpl中继承SqlSessionDaoSupport，可直接注入sqlSessionFactory

<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: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-2.5.xsd   
            http://www.springframework.org/schema/context              
           http://www.springframework.org/schema/context/spring-context-2.5.xsd   
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd   
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
	
	<!-- 这个地方开始放置所有bean的配置信息  -->
	<!--配置jdbc.properties文件的位置信息，路径还是区分大小写 -->
	<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="locations" value="classpath:jdbc.properties" />
	</bean>
	<!-- 读取jdbc.properties文件，配置数据源 -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"   destroy-method="close">
		<property name="driverClassName" value="${driver}" />
		<property name="url" value="${url}" />
		<property name="username" value="${user}" />
		<property name="password" value="${password}" />
		<!-- 数据库连接池配置 -->
		<!-- 初始化连接数量 -->
		<property name="initialSize" value="60" />
		<!-- 最大连接数量 -->
		<property name="maxActive" value="100" />
		<!-- 最大空闲连接数量 -->
		<property name="maxIdle" value="50" />
		<!-- 最小空闲连接数量 -->
		<property name="minIdle" value="10" />
	</bean>
	
	<!-- sqlSessionFactory -->
	<!-- MyBatis在spring中Bean的配置，都是固定的 -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="configLocation" value="classpath:SqlMapConfig.xml" />
		<property name="dataSource" ref="dataSource" />
	</bean>
	<!-- 配置SqlSessionTemplate
	<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
		<constructor-arg index="0" ref="sqlSessionFactory" />
	</bean>
	 -->
	<!--事务相关控制-->
	<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"></property>
    </bean>
  	<!-- 事务传播特性 -->
	<tx:advice id="userTxAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="delete*" propagation="REQUIRED" read-only="false"
                            rollback-for="java.lang.Exception" no-rollback-for="java.lang.RuntimeException"/>
			<tx:method name="doAdd*" propagation="REQUIRED" read-only="false"
                            rollback-for="java.lang.RuntimeException" />
			<tx:method name="doEdit*" propagation="REQUIRED" read-only="false"
                            rollback-for="java.lang.RuntimeException" />
			<tx:method name="update*" propagation="REQUIRED" read-only="false"
                            rollback-for="java.lang.Exception" />
			<tx:method name="find*" propagation="SUPPORTS"/>
			<tx:method name="get*" propagation="SUPPORTS"/>
			<tx:method name="select*" propagation="SUPPORTS"/>
		</tx:attributes>
	</tx:advice>
  	
  	<!-- 配置AOP -->
	<aop:config>
		<aop:pointcut id="pc" expression="execution(public * com.mybatis.biz.*.*(..))" /> <!--把事务控制在Service层-->
		<aop:advisor pointcut-ref="pc" advice-ref="userTxAdvice" />
	</aop:config>
	
	
	<!--配置dao层 -->
	<bean id="userDao" class="com.mybatis.daoImpl.UserDaoImpl">    
		<property name="sqlSessionFactory" ref="sqlSessionFactory" />   
	</bean>
	
	<!--配置biz层 -->
	<bean id="userBiz" class="com.mybatis.bizImpl.UserBizImpl">    
		<property name="userDao" ref="userDao" />    
	</bean>
	
	<!--配置action层 -->
	<bean id="userAction" class="com.mybatis.action.UserAction">    
		<property name="userBiz" ref="userBiz" />    
	</bean>
	
</beans>  

 

driver=com.mysql.jdbc.Driver
url=jdbc\:mysql\://localhost\:3306/mybatis
user=root
password=123456

 

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>   
	    <!-- 为一个vo类取一个别名儿，后面用的时候可以直接用该vo类的别名     而不用在写  包+类名称     -->     
	    <typeAlias type="com.mybatis.entity.UserInfo" alias="UserInfo" />   
    </typeAliases> 
    <mappers>
	    <!-- 对应vo类的DAO接口 所对应的xml配置文件的路径信息 -->     
	    <mapper resource="com/mybatis/entity/UserInfo.xml" />    
    </mappers>
</configuration>

 

package com.mybatis.entity;

public class UserInfo {
	private int id;
	private String name;
	private int age;
	private String sdesc;
	
	public UserInfo() {
		super();
	}
	public UserInfo(int id,String name, int age, String sdesc) {
		super();
		this.id = id;
		this.name = name;
		this.age = age;
		this.sdesc = sdesc;
	}
	public UserInfo(String name, int age, String sdesc) {
		super();
		this.name = name;
		this.age = age;
		this.sdesc = sdesc;
	}
	//stters and getters
}

  

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE mapper  PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN" 
"http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">
	<!--namespace的作用是为这张表取一个名字，好在持久化层中进行访问 -->
<mapper namespace="UserInfo">
	<!-- 插入一行数据 -->
	<insert id="doAdd" parameterType="UserInfo" keyProperty="id">
		INSERT INTO userInfo(name,age,sdesc) values(#{name},#{age},#{sdesc})
	</insert>
	<!-- 删除一条数据 -->
	<delete id="delete" parameterType="int">
		DELETE FROM userInfo WHERE id =#{id}
	</delete>
	<!-- 更新一条数据 -->
	<update id="update" parameterType="UserInfo">
		UPDATE userInfo SET name=#{name},age=#{age},
		sdesc=#{sdesc}
		WHERE id=#{id};
	</update>
	<!-- 查询该表的总行数 -->
	<select id="getCount" resultType="int">
		SELECT COUNT(*)FROM userInfo WHERE id='0'
	</select>
	<!-- 查询一条数据 -->
	<select id="getById" parameterType="int" resultType="UserInfo">
		SELECT id,name,age,desc
		FROM userInfo WHERE id=#{id}
	</select>
	<!-- 查询一组数据 -->
	<select id="findAll" resultType="UserInfo" >
		SELECT * FROM userInfo
   </select>
</mapper>

 注意：我这里使用持久化层继承 SqlSessionDaoSupport，和hibernate一个模式，这里继承之后我们在spring配置文件里面就可以直接给dao层注入sqlSessionFactory，它会帮我们生成我们需要的sqlSession调用为我们封装好的各种方法。

package com.mybatis.daoImpl;
import java.util.List;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import com.mybatis.dao.UserDao;
import com.mybatis.entity.UserInfo;

public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao {

	/**
	 * 插入数据
	 */
	public void doAdd(UserInfo userinfo) {
		this.getSqlSession().insert("UserInfo.doAdd", userinfo);  
	}
	/**
	 * 删除
	 */
	public void delete(int id) {
		this.getSqlSession().delete("UserInfo.delete", id);
		
	}
	/**
	 * 修改
	 */
	public void doEdit(UserInfo userinfo) {
		
		this.getSqlSession().update("UserInfo.update", userinfo);
	}
	/**
	 * 查询所有
	 */
	public List<UserInfo> findAll() {
		return this.getSqlSession().selectList("UserInfo.findAll");
	}
	
}

 

   所需jar包 见附件