Java毕业设计 基于SpringBoot+Vue前后端分离的助农扶贫项目的设计与实现+部署文档+全部资料（优秀项目）.zip

package com.example.service; import cn.hutool.core.util.ObjectUtil; import com.example.common.Constants; import com.example.common.enums.LevelEmun; import com.example.common.enums.ResultCodeEnum; import com.example.common.enums.RoleEnum; import com.example.entity.Account; import com.example.entity.User; import com.example.exception.CustomException; import com.example.mapper.UserMapper; import com.example.utils.TokenUtils; import com.github.pagehelper.PageHelper; import com.github.pagehelper.PageInfo; import org.springframework.beans.BeanUtils; import org.springframework.stereotype.Service; import javax.annotation.Resource; import java.util.List; @Service public class UserService { @Resource private UserMapper userMapper; public void add(User user) { //业务逻辑 //根据用户名查找用户 User dbUser = userMapper.selectByUsername(user.getUsername()); //如果需要添加的用户已存在，抛出用户已存在异常 if (ObjectUtil.isNotEmpty(dbUser)) { throw new CustomException(ResultCodeEnum.USER_EXIST_ERROR); } //如果密码为空，指定一个默认密码为123456 if (ObjectUtil.isEmpty(user.getPassword())) { user.setPassword(Constants.USER_DEFAULT_PASSWORD); } //如果用户等级为空，设置用户默认等级为“普通户”,"普通户"为枚举常量 if (ObjectUtil.isEmpty(user.getLevel())) { user.setLevel(LevelEmun.ORDINARY.level); } //如果用户名为空，设置用户名默认值 if (ObjectUtil.isEmpty((user.getUsername()))) { user.setName(user.getUsername()); } //如果头像为空，设置默认头像 if (ObjectUtil.isEmpty((user.getAvatar()))) { user.setName(user.getAvatar()); } //设置用户的角色都为USER常量 user.setRole(RoleEnum.USER.name()); userMapper.insert(user); } /** * 删除 */ public void deleteById(Integer id) { userMapper.deleteById(id); } /** * 批量删除 */ public void deleteBatch(List<Integer> ids) { for (Integer id : ids) { userMapper.deleteById(id); } } /** * 修改 */ public void updateById(User user) { userMapper.updateById(user); } /** * 根据ID查询 */ public User selectById(Integer id) { User user = userMapper.selectById(id); // 端更新余额接口调用了selectById，需要重新传入一个Token // 生成token String tokenData = user.getId() + "-" + RoleEnum.ADMIN.name(); String token = TokenUtils.createToken(tokenData, user.getPassword()); user.setToken(token); return user; } /** * 查询所有 */ public List<User> selectAll(User user) { return userMapper.selectAll(user); } /** * 分页查询 */ public PageInfo<User> selectPage(User user, Integer pageNum, Integer pageSize) { PageHelper.startPage(pageNum, pageSize); List<User> list = userMapper.selectAll(user); return PageInfo.of(list); } /** * 登录 */ public Account login(Account account) { Account dbUser = userMapper.selectByUsername(account.getUsername()); if (ObjectUtil.isNull(dbUser)) { throw new CustomException(ResultCodeEnum.USER_NOT_EXIST_ERROR); } if (!account.getPassword().equals(dbUser.getPassword())) { throw new CustomException(ResultCodeEnum.USER_ACCOUNT_ERROR); } // 生成token String tokenData = dbUser.getId() + "-" + RoleEnum.USER.name(); String token = TokenUtils.createToken(tokenData, dbUser.getPassword()); dbUser.setToken(token); return dbUser; } /** * 注册 */ public void register(Account account) { User user = new User(); BeanUtils.copyProperties(account, user); add(user); } /** * 修改密码 */ public void updatePassword(Account account) { User dbUser = userMapper.selectByUsername(account.getUsername()); if (ObjectUtil.isNull(dbUser)) { throw new CustomException(ResultCodeEnum.USER_NOT_EXIST_ERROR); } if (!account.getPassword().equals(dbUser.getPassword())) { throw new CustomException(ResultCodeEnum.PARAM_PASSWORD_ERROR); } dbUser.setPassword(account.getNewPassword()); userMapper.updateById(dbUser); } }