【简单Mybatis项目创建步骤】

1、表结构2、创建Maven项目，在pom.xml中引入以下代码：3、创建Student类4、Dao层5、jdbc.properties6、mybatis-config.xml7、MybatisUtils工具类8、测试类

        
        
            junit
            junit
            4.12
        
        
            org.mybatis
            mybatis
            3.5.7
        
        
            mysql
            mysql-connector-java
            5.1.47
        
    
    
    	
        
            
                src/main/java
                
                    ***.xml
                
                false
            
            
                src/main/resources
                
                    ***.xml
                
                false
            
        
    

写上构造方法、setter和getter方法，还有toString方法

public class Student {
    private String Sno;
    private String Sname;
    private String Ssex;
    private int Sage;
    private String Sdept;

StudentMapper接口：

public interface StudentMapper {
    //查询所有学生
    List selectStudent(); 
}

StudentMapper.xml

    
        select  * from student
    

jdbc.driver=com.mysql.jdbc.Driver
#如果使用的事 MySql 8.0+ ，则需加上一个时区配置&serverTimezone=Asia/Shanghai
jdbc.url=jdbc:mysql://localhost:3306/test1?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=root

package com.luhang.utils;

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 java.io.IOException;
import java.io.InputStream;

public class MybatisUtils {
    private static SqlSessionFactory sqlSessionFactory;
    static {
        try {
            String resource="mybatis-config.xml";
            InputStream inputStream= Resources.getResourceAsStream(resource);
            sqlSessionFactory=new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    //获取SqlSession连接
    public static SqlSession getSession(){
        return sqlSessionFactory.openSession();
    }
}

public class Test {
    @org.junit.Test
    public void test(){
        SqlSession sqlSession= MybatisUtils.getSession();
        StudentMapper studentMapper=sqlSession.getMapper(StudentMapper.class);
        List students=studentMapper.selectStudent();
        for (Student student: students){
            System.out.println(student);
        }
        //注意点：增、删、改操作需要提交事务！
        //提交事务,重点!不写的话不会提交到数据库
        //session.commit();
        sqlSession.close();
    }
}

一个简单的mybatis项目例子，到此结束！