1.创建maven工程
2.添加pom.xml依赖
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
</dependencies>
3.创建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>
4.创建 log4j.properties ， 用于查看日志
log4j.rootLogger=DEBUG, Console
#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
5.使用generator工具生成映射文件,由于两张表存在1对多的关系，如需实现级联查询，修改为如下配置
EmpMapper.xml :
DeptMapper.xml :
6.测试类:
@Test
public void testQueryByEid(){
// 获取session
SqlSession session = MybatisSessionFactory.openSession();
Emp emp = session.selectOne("org.clarck.model.mapper.EmpMapper.queryByEid",5);
System.out.println(emp.getEname());
}
@Test
public void testQueryByEid2(){
// 获取session
SqlSession session = MybatisSessionFactory.openSession();
EmpMapper mapper = session.getMapper(EmpMapper.class);
Emp emp = mapper.queryByEid(6);
System.out.println(emp.getEname() + " --- " + emp.getDept().getDname());
}
@Test
public void query(){
// 获取session
SqlSession session = MybatisSessionFactory.openSession();
EmpMapper mapper = session.getMapper(EmpMapper.class);
List list = mapper.query();
System.out.println(list);
}Maven-MyBatis
原文：http://blog.51cto.com/doctorcai/2073156
