Spring+Mybatis+Maven+MySql搭建实例

http://blog.csdn.net/evankaka/article/details/48784641

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@', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (2, 'evan', '123', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (3, 'kaka', 'cadg', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (4, 'simle', 'cscs', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (5, 'arthur', 'csas', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (6, '小德', 'yuh78', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (7, '小小', 'cvff', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (8, '林林之家', 'gvv', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (9, '林炳文Evankaka', 'dfsc', '[e-mail]');
INSERT INTO t_user (USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL) VALUES (10, 'apple', 'uih6', '[e-mail]');



二、工程创建

1、Maven工程创建

（1）新建




（2）选择快速框架



（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)




（4）创建好之后

目录如下：




（5）检查下

这三个地方JDK的版本一定要一样！！！！










三、sping+mybatis配置

1、整个工程目录如下：




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版本号 -->
<spring.version>3.2.8.RELEASE</spring.version>
<!-- log4j日志文件管理包版本 -->
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<!-- junit版本号 -->
<junit.version>4.10</junit.version>
<!-- mybatis版本号 -->
<mybatis.version>3.2.1</mybatis.version>
</properties>

<dependencies>
<!-- 添加Spring依赖 -->
<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>

<!--单元测试依赖 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>

<!-- 日志文件管理包 -->
<!-- log start -->
<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>
<!-- log end -->

<!--spring单元测试依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>

<!--mybatis依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>

<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.0</version>
</dependency>

<!-- mysql驱动包 -->
<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：




（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">
<!--设置domain类和数据库中表的字段一一对应，注意数据库字段和domain类中的字段名称不致，此处一定要！-->
<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>
<!-- 查询单条记录 -->
<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：




(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">
    
     <!-- 引入jdbc配置文件 --> 
     <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
               <value>classpath:properties/*.properties</value>
                <!--要是有多个配置文件，只需在这里继续添加即可 -->
            </list>
        </property>
    </bean>
   
   

<!-- 配置数据源 -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!-- 不使用properties来配置 -->
<!-- <property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/learning" />
<property name="username" value="root" />
<property name="password" value="christmas258@" /> -->
   <!-- 使用properties来配置 -->
<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>

<!-- 自动扫描了所有的XxxxMapper.xml对应的mapper接口文件，这样就不用一个一个手动配置Mpper的映射了，只要Mapper接口类和Mapper映射文件对应起来就可以了。 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage"
value="com.lin.dao" />
</bean>

    <!-- 配置Mybatis的文件 ，mapperLocations配置**Mapper.xml文件位置，configLocation配置mybatis-config文件位置-->
<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" />
<!-- <property name="typeAliasesPackage" value="com.tiantian.ckeditor.model"
/> -->
</bean>

<!-- 自动扫描注解的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：




（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







输出结果：



重要打印的结果



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=[e-mail]]

数据库：




程序成功运行，并且结果正确！