SpringBoot制作简单留言板

package com.leaveword.service; import com.alibaba.fastjson.JSON; import com.leaveword.Utils.CommonTools; import com.leaveword.Utils.Response; import com.leaveword.domain.User; import com.leaveword.repository.UserRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class UserServiceImpl implements UserService { @Autowired UserRepository userRepository; @Override public Response getUser(Integer userId) { User user = null; if((user = userRepository.findOne(userId))!=null) return new Response("0", JSON.toJSONString(user)); else return new Response("-1","用户不存在"); } @Override public Response userRegister(String userName, String userPassword) { if(CommonTools.isEmpty(userName)) return new Response("-1","用户名不能为空"); if(CommonTools.isEmpty(userPassword)) return new Response("-1","用户密码不能为空"); try { if(userRepository.findByUserName(userName)!=null) return new Response("-1","此用户名已经存在"); User user = new User(); user.setUserName(userName); user.setUserPassword(userPassword); user.setRegisterTime(CommonTools.getCurrentTime()); user = userRepository.save(user); user.setUserPassword(""); return new Response("0", JSON.toJSONString(user)); }catch (Exception e){ return new Response("-1", "插入用户异常"); } } @Override public Response userLogin(String userName, String userPassword) { if(CommonTools.isEmpty(userName)) return new Response("-1","用户名不能为空"); if(CommonTools.isEmpty(userPassword)) return new Response("-1","用户密码不能为空"); User user = userRepository.findByUserName(userName); if(user != null){ if(user.getUserPassword().equals(userPassword)) { user.setUserPassword(""); return new Response("0", JSON.toJSONString(user)); } else return new Response("-1","密码错误"); } else return new Response("-1","用户不存在"); } }