Maven整合Spring3.X+Mybatis3.X

最新推荐文章于 2024-05-01 05:30:00 发布

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本文提供了一套Spring3.X与Mybatis3.X整合的基本搭建指南，并附带完整代码示例，包括目录结构、pom.xml配置、自定义异常类、User实体类、Service层接口及实现、测试类等。详细介绍了如何设置数据源、配置SqlSessionFactory、注入SQLSession等关键步骤，以及如何在Service层实现事务管理与异常处理。

网上有很多整合的例子，但大多不能跑起来,至此，本人整理了一套基本的搭建.以备不时之需.

首先Spring3.X 整合 Mybatis3.X 有些jar稍微有变化,大家注意!!! 附件是所有内容，下载测试

先上整理目录结构

目录内容不多言,对maven不太了解的童靴自行学习.

pom.xml的内容

<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/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>spring.mybatis.maven</groupId>
	<artifactId>spring-mybatis-maven</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>sm.maven Maven Webapp</name>
	<url>http://maven.apache.org</url>

	<properties>
		<org.springframework.version>3.0.5.RELEASE</org.springframework.version>
	</properties>

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


<!-- mybatis 3.x 结合 spring 3.x 需要的额外包 ，很多童靴出现这个问题-->
		<dependency>
			<groupId>aopalliance</groupId>
			<artifactId>aopalliance</artifactId>
			<version>1.0</version>
			<optional>true</optional>
		</dependency>

		<!-- mybatis  -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.2.3</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.2</version>
		</dependency>

		<!-- servlet Api -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>2.5</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>jsp-api</artifactId>
			<version>2.1</version>
			<scope>provided</scope>
		</dependency>

		<!--  mysql  -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.18</version>
		</dependency>
		
            <!-- spring  -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${org.springframework.version}</version>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>${org.springframework.version}</version>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframework.version}</version>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${org.springframework.version}</version>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${org.springframework.version}</version>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>${org.springframework.version}</version>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${org.springframework.version}</version>
			<optional>true</optional>
		</dependency>

		<!-- commons - dbcp  -->
		<dependency>
			<groupId>commons-dbcp</groupId>
			<artifactId>commons-dbcp</artifactId>
			<version>1.4</version>
		</dependency>
		<dependency>
			<groupId>commons-pool</groupId>
			<artifactId>commons-pool</artifactId>
			<version>1.5.3</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>commons-collections</groupId>
			<artifactId>commons-collections</artifactId>
			<version>3.2.1</version>
		</dependency>

		<!-- log  mybatis首先采用slf4j-->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>1.7.5</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>1.7.5</version>
		</dependency>

		<dependency>
			<groupId>dom4j</groupId>
			<artifactId>dom4j</artifactId>
			<version>1.6.1</version>
		</dependency>
<!--  other 同样是必须的 -->
		<dependency>
			<groupId>javassist</groupId>
			<artifactId>javassist</artifactId>
			<version>3.3</version>
		</dependency>
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
			<version>1.7.4</version>
		</dependency>

	</dependencies>
	<build>
		<finalName>sm.maven</finalName>
<!-- 指定config目录到classpath下面 -->		
    <resources>
        <resource>
            <targetPath>.</targetPath>
            <directory>src/main/config</directory>
        </resource>
    </resources>
</build>

</project>

IUserDAO 演示几个简单的方法

package org.xyz.dao;

import java.util.List;
import org.springframework.dao.DataAccessException;
import org.xyz.po.User;
/*DataAccessException 异常是Spring整合DAO层的顶级异常*/

public interface IUserDAO {
	
	public List<User> getAllUser() throws DataAccessException;
	
	public User getUserById(Integer id)throws DataAccessException;
	
	public void deleteUserById(Integer id) throws DataAccessException;
	
	public void modifyUserById(User user) throws DataAccessException;
	
	/*保存，返回主键id*/
	public Integer saveUser(User user) throws DataAccessException;
}

DAO的实现

package org.xyz.dao;

import java.util.List;

import org.apache.ibatis.session.SqlSession;
import org.apache.log4j.Logger;
import org.springframework.dao.DataAccessException;
import org.xyz.po.User;

public class UserMapperImpl implements IUserDAO {

	final static Logger  log = Logger.getLogger(UserMapperImpl.class);
	
	private SqlSession sqlSession;
	
	public SqlSession getSqlSession() {
		return sqlSession;
	}

	public void setSqlSession(SqlSession sqlSession) {
		log.warn("初始化sqlSession success ! "+sqlSession);
		this.sqlSession = sqlSession;
	}

	public User getUserById(Integer id)  throws DataAccessException{
		log.debug("-----------------delete user success ! --size:"+id);
		return sqlSession.selectOne("org.xyz.po.UserMapper.getUser",id );
	}

	public void deleteUserById(Integer id) throws DataAccessException{
		sqlSession.delete("org.xyz.po.UserMapper.deleteUser", id);
		log.debug("-----------------delete user success ! --"+id);
		
	}

	public void modifyUserById(User user)throws DataAccessException {
		sqlSession.update("org.xyz.po.UserMapper.modifyUser", user);
		log.debug("------------------modify user success ! --"+user);
		
	}

	public Integer saveUser(User user)throws DataAccessException {
		log.debug("delete user success ! --"+user);
		return sqlSession.insert("org.xyz.po.UserMapper.saveUser", user);
		
	}

	public List<User> getAllUser() throws DataAccessException{
		return sqlSession.selectList("org.xyz.po.UserMapper.getAllUser");
	}

}

自定义异常

package org.xyz.exception;

import org.springframework.dao.DataAccessException;

/**
 * 自定义异常
 */
public class ServiceException extends DataAccessException {

	public ServiceException(String msg) {
		super(msg);
	}

	@Override
	public String getMessage() {

		return super.getMessage();
	}

	@Override
	public Throwable getMostSpecificCause() {
		return super.getMostSpecificCause();
	}

	@Override
	public Throwable getRootCause() {
		return super.getRootCause();
	}

	private static final long serialVersionUID = 6748277402450587224L;

}

User 实体

package org.xyz.po;

import java.io.Serializable;
import java.sql.Date;

public class User implements Serializable {

	private static final long serialVersionUID = 9113088589369627813L;
	private Integer id;
	private String name;
	private String password;
	private Date lastLogintime;
	private boolean isLogin;
	
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}

	public Date getlastLoginTime() {
		return lastLogintime;
	}
	public void setlastLogintime(Date lastLogintime) {
		this.lastLogintime = lastLogintime;
	}
	public static long getSerialversionuid() {
		return serialVersionUID;
	}
	public boolean isLogin() {
		return isLogin;
	}
	public void setLogin(boolean isLogin) {
		this.isLogin = isLogin;
	}
	
	
	@Override
	public String toString() {
		return this.name+","+this.id+","+this.password;
	}
	
}

Service层接口

package org.xyz.service;
import java.util.List;
import org.xyz.exception.ServiceException;
import org.xyz.po.User;
/*Service层 用来测试事务，本例没有实际意义*/
public interface IUserService {
	
	/*修改用户信息*/
	public void updateAndSave(User user) throws ServiceException ;
	
	/*查询所有用户信息*/
	public List<User> getAllUser() throws ServiceException;
	
	/*查询用户信息*/
	public User getUserById(Integer id ) throws ServiceException;
	
}

Service实现

package org.xyz.service;

import java.util.List;

import org.apache.log4j.Logger;
import org.xyz.dao.IUserDAO;
import org.xyz.exception.ServiceException;
import org.xyz.po.User;

public class UserServiceImpl implements IUserService {
	static final Logger log = Logger.getLogger(UserServiceImpl.class);

	private IUserDAO userDAO;

	/* 用update来测试事务 */
	public void updateAndSave(User user) throws ServiceException {
		try {
			userDAO.saveUser(user);
			// 模拟异常
			String s = null;
			System.out.println(s.length());
			/*
			 * 通过捕获Service层方法的DataAccessException来提交和回滚事务的，
			 * 而Service层方法的DataAccessException又是来自调用DAO层方法所产生的异常
			 * 在Service层我们可以自己捕获DAO方法所产成的DataAccessException，
                         * 然后再抛出一个业务方法有意义的异常
			 */

			user.setlastLogintime(
					new java.sql.Date(System.currentTimeMillis()));
			log.info("updateAndSave ... updateUser() ... ");
			
			userDAO.modifyUserById(user);
		} catch (Exception e) {
			throw new ServiceException("update and save fail ");
		}
	}

	public User getUserById(Integer id) throws ServiceException {
		try {
			return userDAO.getUserById(id);
		} catch (Exception e) {
			throw new ServiceException("getUserById fail ");
		}
	}

	public void setUserDAO(IUserDAO userDAO) {
		this.userDAO = userDAO;
	}

	public IUserDAO getUserDAO() {
		return userDAO;
	}

	public List<User> getAllUser() {

		return userDAO.getAllUser();
	}

}

测试

package xyz.test;
import org.apache.log4j.Logger;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.xyz.dao.IUserDAO;
import org.xyz.po.User;

public class Test1 {
	private static final Logger log = Logger.getLogger(Test1.class);
	@Test
	public void f1(){
		String CONFIG = "applicationContext-1.xml";
		ApplicationContext ac = new ClassPathXmlApplicationContext(CONFIG);
		IUserDAO UserDao = (IUserDAO) ac.getBean("UserDao");
		User user = UserDao.getUserById(1);
		System.out.println(user.getName());
		log.info(user.getName());
	}
}

至此代码部分完成,接下来看配置文件.log4j.properties. jdbc.properties就不列举出来，google很多

applicationContext-1的配置内容

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="
				http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
				http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
				http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-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 -->
	<context:property-placeholder location="classpath:jdbc.properties"/>

	<!-- 配置数据源 -->
	<bean id="dbcpDataSource" class="org.apache.commons.dbcp.BasicDataSource"	destroy-method="close">
		<property name="driverClassName" value="${driver}"></property>
		<property name="url"	value="${url}"></property>
		<property name="username" value="${username}"></property>
		<property name="password" value="${password}"></property>
	</bean>
	
     <!-- 创建SqlSessionFactory，同时指定数据源-->  
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dbcpDataSource" />
		 <!-- 指定sqlMapConfig总配置文件，订制的environment在spring容器中不在生效-->  
		 <property name="configLocation" value="classpath:mybatis-config.xml" />
	</bean>

<!-- SqlSessionTemplate  这个需要写配置文件，在实现类中注入sqlsession，再使用sqlsession,是细颗粒控制 -->
	<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
			<constructor-arg index="0" ref="sqlSessionFactory" />  
	 </bean>
	
<!-- DAO 层 注入sqlSession -->
	<bean name="UserDao" class="org.xyz.dao.UserMapperImpl">
	<!-- sqlSession是线程安全的 -->
		<property name="sqlSession" ref="sqlSession"></property>
	</bean>	
<!-- Service层 注入DAO -->
	<bean id="UserSerivice" class="org.xyz.service.UserServiceImpl">
		<property name="userDAO" ref="UserDao"></property>
	</bean>
	
<!-- 声明式事务管理 -->	
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dbcpDataSource"></property>
	</bean>
	
	<!-- 配置事务方案 -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">	
		<tx:attributes>
			<!-- propagation:事务类型 -->
			<tx:method name="update*"  propagation="REQUIRED" />
			<!-- NOT_SUPPORTED : 不使用事务管理 -->
			<tx:method name="get*" propagation="NOT_SUPPORTED" read-only="true"/>
		</tx:attributes>
	</tx:advice>
	
	<!-- aop进行事务配置 -->
	<aop:config>
		<!--execution(* org.xyz.service.UserServiceImpl.*(..)): org.xyz.service.UserServiceImpl类的所有方法 -->
		<aop:pointcut expression="execution(* org.xyz.service.UserServiceImpl.*(..))"  id="servicePoint"/>
		<aop:advisor advice-ref="txAdvice" pointcut-ref="servicePoint"/>
	</aop:config>
</beans>

mybatis-config.xml

<?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>

<!-- 类 别名 ,这里定义了类别名,在org/xyz/po/UserMapper.xml文件中 
		可直接使用User -->
<typeAliases>  
     <typeAlias type="org.xyz.po.User" alias="User" />  
</typeAliases> 
    <mappers>
        <mapper resource="UserMapper.xml"/>
    </mappers>
</configuration>

UserMapper.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="org.xyz.po.UserMapper">
	<resultMap type="User"  id="userMap">
		<id property="id" column="id" />
		<result property="name" column="nickname" />
		<result property="password" column="password" />
		<result property="lastLogintime" column="lastLogintime" />
		<result property="isLogin" column="isLogin"  />
	</resultMap>
	
	<!--查询：通过用户ID返回一个用户对象  -->
	<select id="getUser" resultMap="userMap" parameterType="Integer">
		select * from sm_user
		<where>id = #{id}</where>
	</select>
	<!--查询：所有用户对象 ,返回的是集合包含的类型User , 不是List -->
	<select id="getAllUser" resultMap="userMap">
		select * from sm_user 
	</select>	
	
	<!--删除： -->
	<delete id="deleteUser" parameterType="Integer">
	 	delete from sm_user where  id=#{id}  
	</delete>
	
	<!--修改：-->
	<update id="modifyUser" parameterType="User" >
		update sm_user set nickname =#{name},
			password = #{password} , lastLogintime = #{lastLogintime},
				isLogin = #{isLogin} 
			<where>id = #{id}</where>
	</update>
	
	<!--保存： 其中id代表插入的User对象的主键属性-->
	<insert id="saveUser" parameterType="User" 
				useGeneratedKeys="true" keyProperty="id">
		insert into sm_user (nickname,password,lastLogintime,isLogin)
				values (#{name},#{password},#{lastLoginTime},#{isLogin})
	</insert>
	
</mapper>

全部完成.

执行maven test 即可