登录功能后端实现

1、在service_ucenter模块中实现登录方法

(1) com/atguigu/ucenterservice/entity/vo中新建LoginVo类。

package com.atguigu.ucenterservice.entity.vo;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
@Data
public class LoginVo {
    @ApiModelProperty(value = "手机号")
    private String mobile;
    @ApiModelProperty(value = "密码")
    private String password;
}

（2）在com/atguigu/ucenterservice/controller/UcenterMemberController中添加登录方法。

@ApiOperation(value = "登录")
@PostMapping("login")
public R loginUser(@RequestBody LoginVo loginVo){
    //返回token字符串，包含用户信息
    String token = ucenterService.login(loginVo);
    return R.ok().data("token",token);
}

2、登录方法接口

在com/atguigu/ucenterservice/service/UcenterMemberService添加登录方法接口。

package com.atguigu.ucenterservice.service;
import com.atguigu.ucenterservice.entity.UcenterMember;
import com.atguigu.ucenterservice.entity.vo.LoginVo;
import com.atguigu.ucenterservice.entity.vo.RegisterVo;
import com.baomidou.mybatisplus.extension.service.IService;
public interface UcenterMemberService extends IService<UcenterMember> {
    void register(RegisterVo registerVo);
    String login(LoginVo loginVo);
}

3、实现service

在com/atguigu/ucenterservice/service/impl/UcenterMemberServiceImpl中 实现登录接口方法。

//登录
@Override
public String login(LoginVo loginVo) {
    //1 获得参数
    String mobile = loginVo.getMobile();
    String password = loginVo.getPassword();
    //2 判断参数是否为空
    if(StringUtils.isEmpty(mobile)||
            StringUtils.isEmpty(password)){
        throw  new GuliException(20001,"手机号密码有误");
    }
    //3 根据手机号查询
    QueryWrapper<UcenterMember> wrapper = new QueryWrapper<>();
    wrapper.eq("mobile",mobile);
    UcenterMember ucenterMember = baseMapper.selectOne(wrapper);
    if(ucenterMember==null){
        throw  new GuliException(20001,"手机号密码有误");
    }
    //4 验证密码
    String passwordDatabase = ucenterMember.getPassword();
    //4.1对输入密码进行MD5加密
    String encrypt = MD5.encrypt(password);
    //4.2验证加密后的密码是否一致
    if(!encrypt.equals(passwordDatabase)){
        throw  new GuliException(20001,"手机号密码有误");
    }
    //5 判断用户是否被禁用
    if(ucenterMember.getIsDisabled()){
        throw  new GuliException(20001,"手机号密码有误");
    }
    //6 生成token
    String jwtToken = JwtUtils.getJwtToken(ucenterMember.getId(), ucenterMember.getNickname());
    return jwtToken;
}

4、根据token获取用户信息接口

在com/atguigu/ucenterservice/controller/UcenterMemberController中添加根据token字符串获取用户信息方法。

@ApiOperation(value = "根据token字符串获取用户信息")
@PostMapping("getInfoToken")
public R getInfoToken(HttpServletRequest request){
    //根据JWT字符串获取用户id
    String memberId = JwtUtils.getMemberIdByJwtToken(request);
    //根据用户id获取用户信息
    UcenterMember ucenterMember = ucenterService.getById(memberId);
    return R.ok().data("member",ucenterMember);
}