Mybatis --- Spring整合示例

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>

<groupId>cn.mybatis.test</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.0-SNAPSHOT</version>

<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-messaging</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>

<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.0-beta9</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.0-beta9</version>
</dependency>

<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.17.1-GA</version>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.4.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.4.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.4.2</version>
</dependency>

<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>

<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.7.1</version>
</dependency>

<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2</version>
</dependency>

<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.3</version>
</dependency>

<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.6</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.6</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.7.6</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jul-to-slf4j</artifactId>
<version>1.7.6</version>
</dependency>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>

</dependencies>

</project>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
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-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 加载配置文件 -->
<context:property-placeholder location="classpath:db.properties" />
<context:component-scan base-package="cn.mybatis.mapper" />

<!-- 数据库连接池 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="maxActive" value="10" />
<property name="maxIdle" value="5" />
</bean>
<!-- sqlSessonFactory的配置 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 配置数据库连接池 -->
<property name="dataSource" ref="dataSource"></property>
<!-- 加载配置文件 -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property>
</bean>

<!-- 事务管理器（由Spring管理MyBatis的事务） -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 关联数据源 -->
<property name="dataSource" ref="dataSource"></property>
</bean>

<!-- mapper代理形式dao的配置 -->
<!-- 第一种方法，配置代理对象 -->
<!-- <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
设置代理的mapper接口
<property name="mapperInterface" value="cn.mybatis.mapper.UserMapper"></property>
注入sqlSessionFactory
<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean> -->
<!-- 第二种方式：配置包扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 配置要扫描的包 ，如果扫描多个包使用逗号分隔-->
<!-- <property name="basePackage" value="cn.mybatis.mapper,com.mybatis.mapper1"/> -->
<property name="basePackage" value="cn.mybatis.mapper"/>
</bean>
</beans>

<?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>
<!-- 扫描包的形式创建别名，别名就是类名，不区分大小写 -->
<package name="cn.mybatis.po"/>
</typeAliases>
</configuration>

package cn.mybatis.po;

import java.util.Date;
import java.util.List;

public class User {

private Integer id;
private String username;// 用户姓名
private String sex;// 性别
private Date birthday;// 生日
private String address;// 地址
private List<Orders> orders;
public List<Orders> getOrders() {
return orders;
}
public void setOrders(List<Orders> orders) {
this.orders = orders;
}
public Integer getId() {
return id;
}
@Override
public String toString() {
return "User [id=" + id + ", username=" + username + ", sex=" + sex + ", birthday=" + birthday + ", address="
+ address + "]";
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}

}

package cn.mybatis.mapper;

import cn.mybatis.po.QueryVo;
import cn.mybatis.po.User;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface UserMapper {

User getUserById(int id);
List<User> getUserByName(String username);
void insertUser(User user);
User getUserByQueryVo(QueryVo queryVo);
Integer getUserCount();
List<User> findUserList(User user);
List<User> findUserByIds(QueryVo queryVo);

}

<?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">
<!-- namespace是命名空间，作用sql语句的隔离
#{}作用就是占位符，相当于jdbc的“?”
parameterType：查询的参数类型
resultType：查询结果的数据类型，如果时候pojo应该给全路径。
-->
<!-- mapper代理的开发规则：
1、namespace必须时候接口的全限定名
2、Statementid必须和接口的方法名称一致
3、接口方法的参数类型要和parameterType要一致
4、接口方法的返回值类型要和resultType一致
-->
<mapper namespace="cn.mybatis.mapper.UserMapper">
<!-- 别名不区分大小写 -->
<select id="getUserById" parameterType="int" resultType="USer">
SELECT * FROM `user` WHERE id=#{id};
</select>

<!-- 如果查询结果返回list， resultType设置为list中一个元素的数据类型
${}字符串拼接指令
-->
<select id="getUserByName" parameterType="string" resultType="cn.mybatis.po.User">
SELECT * FROM `user` WHERE username LIKE '%${value}%'
</select>
<!-- 参数时候pojo时，#{}中的名称就是pojo的属性 -->
<insert id="insertUser" parameterType="cn.mybatis.po.User">
<!-- keyProperty：对于pojo的主键属性
resultType:对应主键的数据类型
order：是在insert语句执行之前或者之后。
如果使用uuid做主键，应该先生成主键然后插入数据，此时应该使用Before
-->
<selectKey keyProperty="id" resultType="int" order="AFTER">
SELECT LAST_INSERT_ID()
</selectKey>
INSERT into user (username,birthday,sex,address)
values (#{username}, #{birthday}, #{sex}, #{address})
</insert>

<select id="getUserByQueryVo" parameterType="queryvo" resultType="user">
SELECT * FROM `user` WHERE id=#{user.id};
</select>

<!-- 查询用户表中的记录数 -->
<select id="getUserCount" resultType="int">
SELECT count(*) FROM `user`
</select>

<sql id="find_user_list_where">
<where>
<if test="id!=null">
and id=#{id}
</if>
<if test="username != null and username != ''">
and username like '%${username}%'
</if>
</where>
</sql>
<sql id="user_field_list">
id,username,birthday,sex,address
</sql>
<select id="findUserList" parameterType="user" resultType="user">
select <include refid="user_field_list"/> from user
<include refid="find_user_list_where"/>
</select>
<!-- 动态sql foreach测试 -->
<select id="findUserByIds" parameterType="queryvo" resultType="user">
SELECT
<include refid="user_field_list"/>
FROM `user`
<where>
<!-- and id in(1,10,20,21,31) -->
<foreach collection="ids" item="id" open="and id in(" close=")" separator=",">
#{id}
</foreach>

</where>
</select>
</mapper>

package cn.mybatis.dao;

import java.util.List;

import cn.mybatis.mapper.OrderMapper;
import cn.mybatis.mapper.UserMapper;
import cn.mybatis.po.Orders;
import cn.mybatis.po.User;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.annotation.Order;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class) //使用junit4进行测试
@ContextConfiguration(locations={"classpath:spring/applicationContext.xml"}) //加载配置文件
public class UserMapperTest {

@Autowired
private UserMapper userMapper;

@Autowired
private OrderMapper orderMapper;

@Test
public void testUserMapper() {
User user = userMapper.getUserById(10);
System.out.println(user);
}
@Test
public void testOrderMapper() {
List<Orders> orderList = orderMapper.getOrderList();
for (Orders orders : orderList) {
System.out.println(orders);
}
}

}