mybatis

mybiatis-config.xml

mapper.xml

    
        
        
        
        
    
    
        insert into tab_user values(null,#{uname},#{pwd},#{js});
    
    
    
        delete from tab_user where id=#{id}
    
    
    
        delete from tab_user where id in
        
            #{id}
        
    
    
    
        update tab_user
        
            
                
                    uname=#{uname}
                
                
                    pwd=#{pwd}
                
                
                    js=#{js}
                
            
        
        where id=#{id}
    
    
    
    
        select * from tab_user
    
    
    
        select * from tab_user where id=#{id}
    
    
    
        select count(id) from
        tab_user
    
    
    
        
        select * from tab_user where 1=1
        
            and uname like '%${uname}%'
        
        
            and js like '%${js}%'
        
        order by id desc limit #{start},#{end}
    
    
    
        select count(id) from tab_user where 1=1
        
            and uname like '%${uname}%'
        
        
            and js like '%${js}%'
        
    

测试

//开发mybatis第1步读取mybatis配置文件
    Reader resourceAsReader = Resources.getResourceAsReader("config/mybatis-config.xml");
    //开发mybatis第2步创建mybatis的工厂模式：SqlSessionFactory 
    SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(resourceAsReader);
    //开发mybatis第3步创建mybatis的session
    SqlSession session = factory.openSession();
    //开发mybatis第4步通过session操作数据库
    List list=session.selectList("listDept");
    for(Dept dd:list){
        System.out.println(dd.getDid()+" "+dd.getDname());
        //if(dd.getDname().equals("开发部")){
            Set set = dd.getSet();
            for(Person p:set){
                System.out.println(p.getName()+ " "+p.getDegree());
            }
        //}
    }
    List list1=session.selectList("list");
    for(Person p:list1){
        System.out.println(p.getName()+ " "+p.getDegree());
    }
    //开发mybatis第5步执行事务提交（查询查以 不需要）
    session.commit();
    //开发mybatis第6步关闭连挡
    session.close();