mybatis和spring的整合

@[toc]

建立Maven項目

引入相關依賴

<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>com.sxt</groupId>
  <artifactId>mybatis-17-spring</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <dependencies>
  	<dependency>
  		<groupId>org.springframework</groupId>
  		<artifactId>spring-context</artifactId>
  		<version>4.3.21.RELEASE</version>
  	</dependency>
  	<dependency>
  		<groupId>org.mybatis</groupId>
  		<artifactId>mybatis</artifactId>
  		<version>3.4.6</version>
  	</dependency>
  	<dependency>
  		<groupId>org.slf4j</groupId>
  		<artifactId>slf4j-log4j12</artifactId>
  		<version>1.7.25</version>
  	</dependency>
  	<!-- c3p0 -->
		<dependency>
			<groupId>com.mchange</groupId>
			<artifactId>c3p0</artifactId>
			<version>0.9.5.2</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.47</version>
		</dependency>
		<!-- mybatis和spring整合包 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.3.2</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
			<version>4.3.3.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
			<version>1.8.0</version>
		</dependency>
  </dependencies>
</project>

建立配置文件

mybatis的全局配置文件

<?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>
	<settings>
		<!-- 開啓延遲加載 -->
		<setting name="lazyLoadingEnabled" value="true" />
		<setting name="aggressiveLazyLoading" value="false" />
	</settings>
</configuration>

spring的配置文件

<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.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
	
	<!-- 關聯數據屬性文件 -->
	<context:property-placeholder location="classpath:db.properties"/>
	<!-- 開啓掃描 -->
	<context:component-scan base-package="com.sxt.service.impl"/>

	<!-- 配置數據源 -->
	<bean class="com.mchange.v2.c3p0.ComboPooledDataSource" 
	id="dataSource" >
		<property name="driverClass" value="${driver}"></property>
		<property name="jdbcUrl" value="${url}"></property>
		<property name="user" value="${names}"></property>
		<property name="password" value="${password}"></property>
	</bean>
	<!-- 整合mybatis -->
	<bean class="org.mybatis.spring.SqlSessionFactoryBean" 
	id="sqlSessionFactoryBean" >
		<!-- 關聯數據源 -->
		<property name="dataSource" ref="dataSource"/>
		<!-- 關聯mybatis的配置文件 -->
		<property name="configLocation" value="classpath:mybatis-config.xml"/>
		<!-- 添加別名設置 -->
		<property name="typeAliasesPackage" value="com.sxt.bean"/>
	</bean>
	<!-- 配置掃描的路徑 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" >
		<property name="basePackage" value="com.sxt.mapper"/>
	</bean>
</beans>

db.properties文件

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/demo?characterEncoding=utf-8
names=root
password=1234

測試

Javabean

package com.sxt.bean;

public class User {
	private Integer id;

	private String username;

	private String password;

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	@Override
	public String toString() {
		return "User [id=" + id + ", username=" + username + ", password=" + password + "]";
	}

}

Mapper接口和映射文件

public interface UserMapper {
	
	public List<User> query();
}

<?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.sxt.mapper.UserMapper">
	<select id="query" resultType="user">
		select * from t_user
	</select>
</mapper>

service

/**
 * 接口
 * @author Administrator
 *
 */
public interface IUserService {

	public List<User> query();
}

/**
 * 實現類
 * @author Administrator
 *
 */
@Service
public class UserServiceImpl implements IUserService {
	
	@Resource //獲取代理對象  session.getMapper(UserMapper.class);
	private UserMapper mapper;
	
	@Override
	public List<User> query() {
		// TODO Auto-generated method stub
		return mapper.query();
	}

測試方法

public static void main(String[] args) {
		ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
		IUserService service = ac.getBean(IUserService.class);
		List<User> list = service.query();
		for (User user : list) {
		System.out.println(user);
		}
	}