Mybatis基于注解的方式访问数据库

1. 使用方式：在Service层直接调用

 1 package com.disappearwind.service;
 2 
 3 import org.springframework.beans.factory.annotation.Autowired;
 4 import org.springframework.stereotype.Repository;
 5 import org.springframework.stereotype.Service;
 6 
 7 import com.disappearwind.mapper.UserInfoMapper;
 8 import com.disappearwind.model.UserInfo;
 9 
10 
11 /**
12  * 用户service
13  *
14  */
15 @Service
16 @Repository
17 public class UserInfoService{
18     
19     @Autowired
20     private UserInfoMapper userInfoMapper;
21 
22      public UserInfo selectByPrimaryKey(Integer id){
23          return userInfoMapper.selectByPrimaryKey(id);
24      }
25 }

UserInfoService