7.API接口代码（是不是很6，想不想赞一下？）

import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import com.tony.spring.boot.entity.UserInfo;import com.tony.spring.boot.mapper.UserInfoMapper;import com.tony.spring.boot.utils.JsonUtil;import com.tony.spring.boot.utils.RedisUtil;/** * Created by Administrator on 2017/4/19. */@RestController@RequestMapping(value=http://news.51cto.com/art/201710/"/test")public class TestCtrl {         @Autowired    private RedisUtil redisUtil;         @Autowired     private UserInfoMapper userInfoMapper;     @RequestMapping(value="/index")    public String index(){        return "hello world";    }         /**     * 向redis存储值     * @param key     * @param value     * @return     * @throws Exception     */    @RequestMapping("/set")     public String set(String key, String value) throws Exception{         redisUtil.set(key, value);         return "success";     }          /**     * 获取redis中的值     * @param key     * @return     */    @RequestMapping("/get")     public String get(String key){         try {            return redisUtil.get(key);        } catch (Exception e) {            e.printStackTrace();        }        return "";     }          /**     * 获取数据库中的用户     * @Description TODO     * @param id     * @return     */    @RequestMapping("/getUser/{id}")     public String get(@PathVariable("id")int id){         try {            System.err.println(id);            UserInfo user= userInfoMapper.selectByPrimaryKey(id);            return JsonUtil.getJsonString(user);        } catch (Exception e) {            e.printStackTrace();        }        return "";     } }