<dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.4.5</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.3.1</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>5.0.2.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>5.0.2.RELEASE</version></dependency><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-core</artifactId><version>2.7</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.6</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.0.2.RELEASE</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>6.0.6</version></dependency>

//UserDAO
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;import entity.User;/*** 添加了@Mapper注解之后这个接口在编译时会生成相应的实现类* * 需要注意的是：这个接口中不可以定义同名的方法，因为会生成相同的id* 也就是说这个接口是不支持重载的*/
@Mapper
public interface UserDAO {@Select("select * from user where name = #{name}")public User find(String name);@Select("select * from user where name = #{name} and pwd = #{pwd}")/*** 对于多个参数来说，每个参数之前都要加上@Param注解，* 要不然会找不到对应的参数进而报错*/public User login(@Param("name")String name, @Param("pwd")String pwd);
}

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;import dao.UserDAO;
import entity.User;public class TestCase {@Testpublic void testMapper() {ApplicationContext ac = new ClassPathXmlApplicationContext("spring-mybatis.xml");UserDAO dao = ac.getBean(UserDAO.class);User u1 = dao.find("hehe");User u2 = dao.login("hehe", "123");System.out.println(u1.getName().equals(u2.getName()));}
}