mybatis和spring整合

本文给大家介绍下Spring整合Mybatis的步骤

SpringMVC整合Spring教程

创建maven项目

创建一个java项目即可

引入相关依赖

<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>4.0.0modelVersion>
	<groupId>com.dpbgroupId>
	<artifactId>mybatis11-SSartifactId>
	<version>0.0.1-SNAPSHOTversion>
	<properties>
		<spirng.version>4.3.3.RELEASEspirng.version>
	properties>
	<dependencies>
		
		<dependency>
			<groupId>org.springframeworkgroupId>
			<artifactId>spring-contextartifactId>
			<version>${spirng.version}version>
		dependency>
		<dependency>
			<groupId>org.springframeworkgroupId>
			<artifactId>spring-ormartifactId>
			<version>${spirng.version}version>
		dependency>
		
		<dependency>
			<groupId>org.mybatisgroupId>
			<artifactId>mybatisartifactId>
			<version>3.4.6version>
		dependency>
		
		<dependency>
			<groupId>org.mybatisgroupId>
			<artifactId>mybatis-springartifactId>
			<version>1.3.2version>
		dependency>

		
		<dependency>
			<groupId>mysqlgroupId>
			<artifactId>mysql-connector-javaartifactId>
			<version>5.1.27version>
		dependency>
		
		<dependency>
			<groupId>org.slf4jgroupId>
			<artifactId>slf4j-apiartifactId>
			<version>1.7.25version>
		dependency>
		<dependency>
			<groupId>org.slf4jgroupId>
			<artifactId>slf4j-log4j12artifactId>
			<version>1.7.25version>
		dependency>
		<dependency>
			<groupId>log4jgroupId>
			<artifactId>log4jartifactId>
			<version>1.2.17version>
		dependency>
		
		<dependency>
			<groupId>com.mchangegroupId>
			<artifactId>c3p0artifactId>
			<version>0.9.5.2version>
		dependency>
		
		<dependency>
			<groupId>junitgroupId>
			<artifactId>junitartifactId>
			<version>3.8.1version>
		dependency>
	dependencies>
project>

创建对应的配置文件

mybatis的全局配置文件

<configuration>
  <settings>
  	
  	<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">
	
	<context:property-placeholder location="classpath:db.properties"/>
	
	<context:component-scan base-package="com.dpb.service.impl"/>

	
	<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>
	
	<bean class="org.mybatis.spring.SqlSessionFactoryBean" 
	id="sqlSessionFactoryBean" >
		
		<property name="dataSource" ref="dataSource"/>
		
		<property name="configLocation" value="classpath:mybatis-config.xml"/>
		
		<property name="typeAliasesPackage" value="com.dpb.bean"/>
	bean>
	
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" >
		<property name="basePackage" value="com.dpb.mapper"/>
	bean>
beans>

db.properties文件

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf-8
names=root
password=123456

log4j.properties文件

log4j.rootCategory=DEBUG, stdout , R
 
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[QC] %p [%t] %C.%M(%L) | %m%n
 
log4j.appender.R=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R.File=C:\\tools\\logs\\dpb.log
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d-[TS] %p %t %c - %m%n

业务测试

javaBean

package com.dpb.bean;

public class User {

	private int id;
	
	private String name;
	
	private int age;

	public int getId() {
		return id;
	}

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

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

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

Mapper接口和映射文件

public interface UserMapper {

	public List<User> query();
}

<mapper namespace="com.dpb.mapper.UserMapper">
	<select id="query" resultType="user">
		select * from t_user
	select>
mapper>

service

/**
 * 接口 service
 * @author dengp
 *
 */
public interface IUserService {

	public List<User> query();
}

@Service
public class UserServiceImpl implements IUserService{
	
	@Resource
	private UserMapper mapper;

	@Override
	public List<User> query() {
		// TODO Auto-generated method stub
		return mapper.query();
	}
}

测试方法

public class Test1 extends TestCase {
	public void test(){
		ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
		IUserService user = ac.getBean(IUserService.class);
		List<User> list = user.query();
		System.out.println("--->"+list.size());
		for (User u : list) {
			System.out.println(u.getId()+","+u.getName());
		}
	}
}

项目目录结构:

注意如果接口映射文件和接口文件不在同一个包下可以如下配置:

<bean class="org.mybatis.spring.SqlSessionFactoryBean">
	
	<property name="configLocation" value="classpath:mybatis-conf.xml"/>
	
	<property name="dataSource" ref="dateSource"/>
	
	<property name="typeAliasesPackage" value="com.sxt.model"/>
	
	<property name="mapperLocations" value="classpath:mapper/*.xml"/>
bean>