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