Spring同Mybatis的整合

1.引入相应的Jar包（Mybatis的jar包，Spring的jar包，mybatis-spring-1.1.1.jar）。

2.编写相应的包（三层架构的搭建）。

3.配置相应的Spring的配置

1）在ApplicationContext.xml中配置相应的数据源<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <!-- 配置数据源-->
<bean id="jdbcDataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName">
<value>oracle.jdbc.driver.OracleDriver</value>
</property>
<property name="url">
<value>jdbc:oracle:thin:@127.0.0.1:1521:orcl</value>
</property>
<property name="username">
<value>bbs</value>
</property>
<property name="password">
<value>123</value>
</property>
</bean>

</beans>
2）配置mybatis的SqlSessionFactory（也需要在ApplicationContext里做配置）。

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="jdbcDataSource" />
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean>

4.搭建Mybatis的框架（编写相应的实体文件，SQL映射文件）。
例：UserInfoMapper.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.gxa.bj.dao.imp.UserMapper">
<insert id="addItem" parameterType="com.gxa.bj.model.UserInfo">
insert into UserInfo(userid,username,userpwd,useremail,useraddress,regreason)
values(usernext.nextval,#{userName},#{userPwd},#{userEmail},#{userAddress},#{regReason})
</insert>
<delete id="removeItem">
delete from UserInfo where userId=#{id}
</delete>
<update id="updateItem" parameterType="com.gxa.bj.model.UserInfo">
update userinfo set
<if test="userName!=null">
userName = #{userName},
</if>
<if test="userPwd!=null">
userPwd = #{userPwd},
</if>
<if test= "userEmail!=null">
userEmail = #{userEmail},
</if>
<if test= "userAddress!=null">
userAddress = #{userAddress},
</if>
<if test= "regReason!=null">
regReason = #{regReason},
</if>
userId=#{userId} Where userId=#{userId}
</update>
<select id="getModel" resultType="com.gxa.bj.model.UserInfo">
select * from userinfo where userid=#{id}
</select>
<select id="getUsers" parameterType="java.lang.String" resultType="com.gxa.bj.model.UserInfo" resultSets="com.gxa.bj.model.UserInfo">
select * from userinfo where userName like '%${value}%'
</select>
<select id="getList" resultSets="com.gxa.bj.model.UserInfo" parameterType="com.gxa.bj.model.UserInfo" resultType="com.gxa.bj.model.UserInfo">
Select * From userInfo
<where>
<if test="userName!=null">
And userName like #{userName}
</if>
<if test="userId>0">
And userId =#{userId}
</if>
<if test="userPwd!=null and userPwd!=''">
And userPwd like #{userPwd}
</if>
</where>
</select>
<select id="getListByPage" parameterType="com.gxa.bj.model.UserInfoPage" resultType="com.gxa.bj.model.UserInfo">
Select u.*
From (Select rownum as num, userinfo.*
from userinfo
<where>
<if test="userName!=null">
And userName like #{userName}
</if>
<if test="userId >= 10">
And userId =#{userId}
</if>
<if test="userPwd!=null and userPwd !='' ">
And userPwd like #{userPwd}
</if>
</where>
) u Where u.num between #{startNum} and #{endNum}
</select>
</mapper>5.编写相应的dao层（这个层里都是接口）
例：UserInfoMapper.java

6.编写相应的Service层，service层里需要引入的是dao层。

例：UserInfoService.java

package com.gxa.bj.service;

import java.util.List;

import com.gxa.bj.dao.imp.UserMapper;
import com.gxa.bj.model.UserInfo;

public class UserInfoService {
private UserMapper userMapper;
public UserMapper getUserMapper() {
return userMapper;
}
public void setUserMapper(UserMapper userMapper) {
this.userMapper = userMapper;
}
public List<UserInfo> getList(UserInfo t){
return userMapper.getList(t);
}
}7.编写相应的action层，action层里需要的是Service层。
例：UserInfoAction.java

package com.gxa.bj.action;

import java.util.List;

import com.gxa.bj.model.UserInfo;
import com.gxa.bj.service.UserInfoService;

public class UserInfoAction {
private UserInfoService userInfoService;
public UserInfoService getUserInfoService() {
return userInfoService;
}
public void setUserInfoService(UserInfoService userInfoService) {
this.userInfoService =
a130
userInfoService;
}
public List<UserInfo> getList(UserInfo u){
return userInfoService.getList(u);
}
}8.在Spring配置文件中，将各层注入Spring容器。
<!--配置dao层 -->
<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="mapperInterface" value="com.gxa.bj.dao.imp.UserMapper"></property>
<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
</bean>
<!-- 配置Service层 -->
<bean id="userInfoService" class="com.gxa.bj.service.UserInfoService">
<property name="userMapper" ref="userMapper"></property>
</bean>
<!-- 配置Action层 -->
<bean id="userInfoAction" class="com.gxa.bj.action.UserInfoAction">
<property name="userInfoService" ref="userInfoService"></property>
</bean>

P.S.
如果改用C3P0作为数据源

需要引入C3P0的jar包：c3p0-0.9.2.1.jar,c3p0-oracle-thin-extras-0.9.2.1.jar,mchange-commons-java-0.2.3.4.jar。

将之前的c3p0的配置改为Spring中的属性注入。

在ApplicationContext.xml中修改数据源配置

<!-- 配置数据源-->
<bean id="jdbcDataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass">
<value>oracle.jdbc.driver.OracleDriver</value>
</property>
<property name="jdbcUrl">
<value>jdbc:oracle:thin:@127.0.0.1:1521:orcl</value>
</property>
<property name="user">
<value>bbs</value>
</property>
<property name="password">
<value>123</value>
</property>
<property name="initialPoolSize">
<value>10</value>
</property>
</bean>