1.pom文件

          
       
        4.0.0
           
       
        com.zhangpn.maven
           
       
        MyBatis
           
       
        0.0.1-SNAPSHOT
           
       
        jar
           
       
        MyBatis
           
       
        http://maven.apache.org
           
               
        
         UTF-8
                
        
         3.4.1
            
           
               
                    
         
          org.mybatis
                     
         
          mybatis
                     
         
          ${MybatisVersion}
                 
                
                    
         
          mysql
                     
         
          mysql-connector-java
                     
         
          8.0.11
                 
                
                    
         
          junit
                     
         
          junit
                     
         
          4.12
                     
         
          test
                 
            
       
      

2.mybatis.xml

3.UserDaoMapper.xml

      
          
               select * from user where id = #{id}    
      

4.UserDao.java

package com.zhangpn.Dao;import com.zhangpn.Entity.User;public interface UserDao {    public User getUserById(String id);}

5.User.java

package com.zhangpn.Entity;public class User {    private String id;    private String account;    private String name;    private String password;    public String getId() {        return id;    }    public void setId(String id) {        this.id = id;    }    public String getAccount() {        return account;    }    public void setAccount(String account) {        this.account = account;    }    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;    }    @Override    public String toString() {        return "User [id=" + id + ", account=" + account + ", name=" + name + ", password=" + password + "]";    }    }

6.TestMETHOD

package com.zhangpn.Test;import java.io.IOException;import java.io.InputStream;import org.apache.ibatis.io.Resources;import org.apache.ibatis.session.SqlSession;import org.apache.ibatis.session.SqlSessionFactory;import org.apache.ibatis.session.SqlSessionFactoryBuilder;import org.junit.Test;import com.zhangpn.Dao.UserDao;import com.zhangpn.Entity.User;public class TestMethod {    @Test    public void Tst1() throws IOException {        SqlSessionFactoryBuilder sfb = new SqlSessionFactoryBuilder();        InputStream ins = Resources.getResourceAsStream("mybatis.xml");        SqlSessionFactory ssf = sfb.build(ins);        SqlSession session = ssf.openSession();        UserDao userDao = session.getMapper(UserDao.class);        User user = userDao.getUserById("1");        System.out.println(user);    }}