springboot+vue+mybatisplus项目实战-学生成绩管理系统05

service

scoreService.java

package com.shrimpking.service;

import com.shrimpking.pojo.Score;
import com.baomidou.mybatisplus.extension.service.IService;

/**
 * <p>
 * 成绩表 服务类
 * </p>
 *
 * @author shrimpking
 * @since 2023-11-04
 */
public interface ScoreService extends IService<Score> {

}

studentSercive.java

package com.shrimpking.service;

import com.shrimpking.pojo.Student;
import com.baomidou.mybatisplus.extension.service.IService;

/**
 * <p>
 * 学生表 服务类
 * </p>
 *
 * @author shrimpking
 * @since 2023-11-04
 */
public interface StudentService extends IService<Student> {

}

UserService.java

package com.shrimpking.service;

import com.shrimpking.pojo.User;
import com.baomidou.mybatisplus.extension.service.IService;
import com.shrimpking.req.LoginReq;
import com.shrimpking.res.Result;
import com.shrimpking.vo.UserVO;

/**
 * <p>
 * 用户表 服务类
 * </p>
 *
 * @author shrimpking
 * @since 2023-11-04
 */
public interface UserService extends IService<User> {

    Result<UserVO> login(LoginReq loginReq);
}

serviceImpl.

scoreServiceImpl.java

package com.shrimpking.service.impl;

import com.shrimpking.pojo.Score;
import com.shrimpking.mapper.ScoreMapper;
import com.shrimpking.service.ScoreService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;

/**
 * <p>
 * 成绩表 服务实现类
 * </p>
 *
 * @author shrimpking
 * @since 2023-11-04
 */
@Service
public class ScoreServiceImpl extends ServiceImpl<ScoreMapper, Score> implements ScoreService {

}

studentServiceImpl.java

package com.shrimpking.service.impl;

import com.shrimpking.pojo.Student;
import com.shrimpking.mapper.StudentMapper;
import com.shrimpking.service.StudentService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;

/**
 * <p>
 * 学生表 服务实现类
 * </p>
 *
 * @author shrimpking
 * @since 2023-11-04
 */
@Service
public class StudentServiceImpl extends ServiceImpl<StudentMapper, Student> implements StudentService {

}

UserSercvieImpl.java

package com.shrimpking.service.impl;

import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.shrimpking.dto.UserDTO;
import com.shrimpking.pojo.User;
import com.shrimpking.mapper.UserMapper;
import com.shrimpking.req.LoginReq;
import com.shrimpking.res.Result;
import com.shrimpking.service.UserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.shrimpking.util.JwtUtils;
import com.shrimpking.vo.UserVO;
import org.apache.ibatis.logging.Log;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;

/**
 * <p>
 * 用户表 服务实现类
 * </p>
 *
 * @author shrimpking
 * @since 2023-11-04
 */
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {

    @Override
    public Result<UserVO> login(LoginReq loginReq)
    {
        //查询用户
        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(User::getUserName,loginReq.getUserName())
                .eq(User::getPwd,loginReq.getPwd());
        User user = this.baseMapper.selectOne(queryWrapper);
        //未查到，提示
        if(user == null){
            return Result.failure("用户名或密码不正确");
        }
        //生成token，返回
        UserVO userVO = createToken(user);
        return Result.success(userVO);
    }

    /**
     * 私有方法，处理转换
     * @param user
     * @return
     */
    private UserVO createToken(User user)
    {
        //新建转换对象
        UserDTO userDTO = new UserDTO();
        //复制属性
        BeanUtils.copyProperties(user,userDTO);
        //生成token
        String token = JwtUtils.getToken(userDTO);
        //返回token + 用户user信息
        UserVO vo = new UserVO();
        BeanUtils.copyProperties(userDTO,vo);
        //设置返回的token
        vo.setToken(token);
        //返回
        return vo;
    }
}