Spring+Mybatis+Maven+MySql搭建实例

你的名字 2021-09-10 15:10 306阅读 0赞

[林炳文Evankaka][Evankaka]原创作品。转载请注明出处[http://blog.csdn.net/evankaka][http_blog.csdn.net_evankaka]

摘要：本文主要讲了如何使用Maven来搭建Spring+Mybatis+MySql的的搭建实例，文章写得很详细，有代码有图片，最后也带有运行的效果。

[本文工程免费下载][Link 1]

# 一、准备工作 #

1. 首先创建一个表：

CREATE TABLE `t_user` (
      `USER_ID` int(11) NOT NULL AUTO_INCREMENT,
      `USER_NAME` char(30) NOT NULL,
      `USER_PASSWORD` char(10) NOT NULL,
      `USER_EMAIL` char(30) NOT NULL,
      PRIMARY KEY (`USER_ID`),
      KEY `IDX_NAME` (`USER_NAME`)
    ) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8

随便插入一些数据：

INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (1, '林炳文', '1234567@', 'ling20081005@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (2, 'evan', '123', 'fff@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (3, 'kaka', 'cadg', 'fwsfg@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (4, 'simle', 'cscs', 'fsaf@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (5, 'arthur', 'csas', 'fsaff@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (6, '小德', 'yuh78', 'fdfas@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (7, '小小', 'cvff', 'fsaf@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (8, '林林之家', 'gvv', 'lin@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (9, '林炳文Evankaka', 'dfsc', 'ling2008@126.com');
    INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (10, 'apple', 'uih6', 'ff@qq.com');

# 二、工程创建 #

1、Maven工程创建

（1）新建

![20150928150033487][]

（2）选择快速框架

![20150928150045272][]

（3）输出项目名，包，记得选war(表示web项目，以后可以spingMVC连起来用)

![20150928150115530][]

（4）创建好之后

目录如下：

![20150928150343886][]

（5）检查下

这三个地方JDK的版本一定要一样！！！！

![20150928150616293][]

![20150928150624749][]

![20150928150631584][]

# 三、sping+mybatis配置 #

1、整个工程目录如下：

![20150928151011131][]

2、POM文件

<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.lin</groupId>
    	<artifactId>ssm_project</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    	<packaging>war</packaging>
    	<properties>
    		
    		<spring.version>3.2.8.RELEASE</spring.version>
    		
    		<slf4j.version>1.6.6</slf4j.version>
    		<log4j.version>1.2.12</log4j.version>
    		
    		<junit.version>4.10</junit.version>
    		
    		<mybatis.version>3.2.1</mybatis.version>
    	</properties>
    
    	<dependencies>
    		
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-core</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-webmvc</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-context</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-context-support</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-aop</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-aspects</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-tx</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-jdbc</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-web</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    
    		
    		<dependency>
    			<groupId>junit</groupId>
    			<artifactId>junit</artifactId>
    			<version>${junit.version}</version>
    			<scope>test</scope>
    		</dependency>
    
    		
    		
    		<dependency>
    			<groupId>log4j</groupId>
    			<artifactId>log4j</artifactId>
    			<version>${log4j.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-api</artifactId>
    			<version>${slf4j.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-log4j12</artifactId>
    			<version>${slf4j.version}</version>
    		</dependency>
    		
    
    		
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-test</artifactId>
    			<version>${spring.version}</version>
    			<scope>test</scope>
    		</dependency>
    
    		
    		<dependency>
    			<groupId>org.mybatis</groupId>
    			<artifactId>mybatis</artifactId>
    			<version>${mybatis.version}</version>
    		</dependency>
    
    		
    		<dependency>
    			<groupId>org.mybatis</groupId>
    			<artifactId>mybatis-spring</artifactId>
    			<version>1.2.0</version>
    		</dependency>
    
    		
    		<dependency>
    			<groupId>mysql</groupId>
    			<artifactId>mysql-connector-java</artifactId>
    			<version>5.1.29</version>
    		</dependency>
    	</dependencies>
    
    </project>

3、java代码-------src/main/java

目录如下：

![20150928151939611][]

（1）User.java

对应数据库中表的字段，放在src/main/java下的包com.lin.domain

package com.lin.domain;
    
    /**
     * User映射类
     * 
     * @author linbingwen
     * @time 2015.5.15
     */
    public class User {
    	private Integer userId;
    	private String userName;
    	private String userPassword;
    	private String userEmail;
    
    	public Integer getUserId() {
    		return userId;
    	}
    
    	public void setUserId(Integer userId) {
    		this.userId = userId;
    	}
    
    	public String getUserName() {
    		return userName;
    	}
    
    	public void setUserName(String userName) {
    		this.userName = userName;
    	}
    
    	public String getUserPassword() {
    		return userPassword;
    	}
    
    	public void setUserPassword(String userPassword) {
    		this.userPassword = userPassword;
    	}
    
    	public String getUserEmail() {
    		return userEmail;
    	}
    
    	public void setUserEmail(String userEmail) {
    		this.userEmail = userEmail;
    	}
    
    	@Override
    	public String toString() {
    		return "User [userId=" + userId + ", userName=" + userName
    				+ ", userPassword=" + userPassword + ", userEmail=" + userEmail
    				+ "]";
    	}
    	
    }

（2）UserDao.java

Dao接口类，用来对应mapper文件。放在src/main/java下的包com.lin.dao,内容如下：

package com.lin.dao;
    
    
    import com.lin.domain.User;
    
    /**
     * 功能概要：User的DAO类
     * 
     * @author linbingwen
     * @since 2015年9月28日
     */
    public interface UserDao {
    	/**
    	 * 
    	 * @author linbingwen
    	 * @since 2015年9月28日
    	 * @param userId
    	 * @return
    	 */
    	public User selectUserById(Integer userId);
    
    }

（2）UserService.java和UserServiceImpl.java

service接口类和实现类，放在src/main/java下的包com.lin.service,内容如下：

UserService.java

package com.lin.service;
    
    import org.springframework.stereotype.Service;
    
    import com.lin.domain.User;
    
    /**
     * 功能概要：UserService接口类
     * 
     * @author linbingwen
     * @since  2015年9月28日 
     */
    public interface UserService {
    	User selectUserById(Integer userId);
    
    }

UserServiceImpl.java

package com.lin.service;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import com.lin.dao.UserDao;
    import com.lin.domain.User;
    
    /**
     * 功能概要：UserService实现类
     * 
     * @author linbingwen
     * @since  2015年9月28日 
     */
    @Service
    public class UserServiceImpl implements UserService{
    	@Autowired
    	private UserDao userDao;
    
    	public User selectUserById(Integer userId) {
    		return userDao.selectUserById(userId);
    		
    	}
    
    }

（4）mapper文件

用来和dao文件对应，放在src/main/java下的com.lin.mapper包下

<?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.lin.dao.UserDao">
    
    	<resultMap id="BaseResultMap" type="com.lin.domain.User">
    		<id column="USER_ID" property="userId" jdbcType="INTEGER" />
    		<result column="USER_NAME" property="userName" jdbcType="CHAR" />
    		<result column="USER_PASSWORD" property="userPassword" jdbcType="CHAR" />
    		<result column="USER_EMAIL" property="userEmail" jdbcType="CHAR" />
    	</resultMap>
    	
    	<select id="selectUserById" parameterType="int" resultMap="BaseResultMap">
    		SELECT * FROM t_user WHERE USER_ID = #{userId}
    	</select>
    </mapper>

4、资源配置-------src/main/resources

目录如下：

![20150928152028244][]

(1)mybatis配置文件

这里没有什么内容，因为都被放到application.xml中去了,放在src/main/resources下的mybatis文件夹下

mybatis-config.xml内容如下：

<?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>    
    </configuration>

（2）数据源配置jdbc.properties

放在src/main/resources下的propertiesy文件夹下

jdbc_driverClassName=com.mysql.jdbc.Driver
    jdbc_url=jdbc:mysql://localhost:3306/learning
    jdbc_username=root
    jdbc_password=christmas258@

（3）Spring配置

这是最重要的：application.xml内容如下

<?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:context="http://www.springframework.org/schema/context"
    	xmlns:aop="http://www.springframework.org/schema/aop"
    	xsi:schemaLocation="  
               http://www.springframework.org/schema/beans  
               http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
               http://www.springframework.org/schema/aop  
               http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
               http://www.springframework.org/schema/context  
               http://www.springframework.org/schema/context/spring-context-3.0.xsd">
         
           
         <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
            <property name="locations">
                <list>
                   <value>classpath:properties/*.properties</value>
                    
                </list>
            </property>
        </bean>
        
        
    
    	
    	<bean id="dataSource"
    		class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    		
    		
    	   
    		<property name="driverClassName">
    			<value>${jdbc_driverClassName}</value>
    		</property>
    		<property name="url">
    			<value>${jdbc_url}</value>
    		</property>
    		<property name="username">
    			<value>${jdbc_username}</value>
    		</property>
    		<property name="password">
    			<value>${jdbc_password}</value>
    		</property>
    	</bean>
    
    	
    	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    		<property name="basePackage"
    			value="com.lin.dao" />
    	</bean>
    
        
    	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    		<property name="dataSource" ref="dataSource" />
            <property name="mapperLocations" value="classpath*:com/lin/mapper/**/*.xml"/>  
    		<property name="configLocation" value="classpath:mybatis/mybatis-config.xml" />
    		
    	</bean>
    
    	
    	<context:component-scan base-package="com.lin.service" />
    
    </beans>

（4）日志打印log4j.properties

就放在src/main/resources

log4j.rootLogger=DEBUG,Console,Stdout
    
    #Console
    log4j.appender.Console=org.apache.log4j.ConsoleAppender
    log4j.appender.Console.layout=org.apache.log4j.PatternLayout
    log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
    
    log4j.logger.java.sql.ResultSet=INFO
    log4j.logger.org.apache=INFO
    log4j.logger.java.sql.Connection=DEBUG
    log4j.logger.java.sql.Statement=DEBUG
    log4j.logger.java.sql.PreparedStatement=DEBUG 
    
    log4j.appender.Stdout = org.apache.log4j.DailyRollingFileAppender  
    log4j.appender.Stdout.File = E://logs/log.log  
    log4j.appender.Stdout.Append = true  
    log4j.appender.Stdout.Threshold = DEBUG   
    log4j.appender.Stdout.layout = org.apache.log4j.PatternLayout  
    log4j.appender.Stdout.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

# 四、单元测试 #

上面的配置完好，接下来就是测验成功

整个目录 如下：

![20150928152713788][]

（1）测试基类

package com.lin.baseTest;
    
    import org.junit.runner.RunWith;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    
    /**
     * 功能概要：
     * 
     * @author linbingwen
     * @since  2015年9月28日 
     */
    //指定bean注入的配置文件
    @ContextConfiguration(locations = { "classpath:application.xml" })
    //使用标准的JUnit @RunWith注释来告诉JUnit使用Spring TestRunner
    @RunWith(SpringJUnit4ClassRunner.class)
    public abstract class SpringTestCase extends AbstractJUnit4SpringContextTests{
    	protected Logger logger = LoggerFactory.getLogger(getClass());
    }

（2）测试类

package com.lin.service;
    
    import org.apache.log4j.Logger;
    import org.junit.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    
    import com.lin.baseTest.SpringTestCase;
    import com.lin.domain.User;
    
    /**
     * 功能概要：UserService单元测试
     * 
     * @author linbingwen
     * @since  2015年9月28日 
     */
    public class UserServiceTest extends SpringTestCase	{
    	@Autowired
    	private UserService userService;
    	Logger logger = Logger.getLogger(UserServiceTest.class);
    	
    	@Test
    	public void selectUserByIdTest(){
    		User user = userService.selectUserById(10);
            logger.debug("查找结果" + user);
    	}
    	
    
    }

选中selectUserByIdTest，然后右键如下运行

![20150928153104191][]

输出结果：

![20150928153237888][]

重要打印的结果

![20150928154251760][]

这里

2015-09-28 15:20:15,129 [main] DEBUG [com.lin.dao.UserDao.selectUserById] - ==>  Preparing: SELECT * FROM t_user WHERE USER_ID = ? 
    2015-09-28 15:20:15,160 [main] DEBUG [com.lin.dao.UserDao.selectUserById] - ==> Parameters: 10(Integer)
    2015-09-28 15:20:15,160 [main] DEBUG [org.mybatis.spring.SqlSessionUtils] - Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@6b64bff9]
    2015-09-28 15:20:15,160 [main] DEBUG [org.springframework.jdbc.datasource.DataSourceUtils] - Returning JDBC Connection to DataSource
    2015-09-28 15:20:15,160 [main] DEBUG [com.lin.service.UserServiceTest] - 查找结果User [userId=10, userName=apple, userPassword=uih6, userEmail=ff@qq.com]

数据库：

![20150928153325973][]

程序成功运行，并且结果正确！

[本文工程免费下载][Link 1]

更多技术请关注笔者微信技术公众号"单例模式"

![70][]

[Evankaka]: http://my.csdn.net/Evankaka
[http_blog.csdn.net_evankaka]: http://blog.csdn.net/evankaka
[Link 1]: http://download.csdn.net/detail/evankaka/9149117
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[70]: /images/20210811/cc331b2e4fc04e198e0f0e89e7e235d9.png