导入Bcrypt依赖
用于加密解密用户密码

            <!-- https://mvnrepository.com/artifact/org.mindrot/jbcrypt -->
            <dependency>
                <groupId>org.mindrot</groupId>
                <artifactId>jbcrypt</artifactId>
                <version>0.4</version>
            </dependency>

基本和之前的手机号校验登录差不多 换汤不换药
用户登录流程:

1. 首先判断字段是否合法 若不合法直接抛出异常
2. 根据用户名查询是否有记录 若无记录直接返回
3. 使用Bcrypt算法校验用户密码是否匹配 若匹配将设置cookie和redis并返回ok 若不匹配返回error

BCrypt.checkpw() 用户校验用户密码 若密码匹配则返回true

controller

public GraceJSONResult adminLogin(AdminLoginVO adminLoginVO,
                                      HttpServletRequest request,
                                      HttpServletResponse response,
                                      BindingResult bindingResult) {
        // 1. 首先查询字段是否合法
        if (bindingResult.hasErrors()) {
            Map<String, String> bindResultErrors = super.getBindResultErrors(bindingResult);

            return GraceJSONResult.errorMap(bindResultErrors);
        }

        // 2. 首先根据用户名查询 用户在database中是否有记录
        AdminUser usernameByAdmin = adminService.findUsernameByAdmin(adminLoginVO.getUsername());
        if (usernameByAdmin == null) {
            return GraceJSONResult.errorCustom(ResponseStatusEnum.ADMIN_NOT_EXIT_ERROR);
        }

        // 3. 查看用户名密码是否匹配
        boolean flag = BCrypt.checkpw(adminLoginVO.getPassword(), usernameByAdmin.getPassword());

        if (flag) {
            String token = UUID.randomUUID().toString();
            setCookie(request, response, "atoken", token, COOKIE_AGE);
            setCookie(request, response, "aid", usernameByAdmin.getId(), COOKIE_AGE);
            setCookie(request, response, "aname", usernameByAdmin.getAdminName(), COOKIE_AGE);

            redisOperator.set(REDIS_ADMIN_TOKEN + ":" + usernameByAdmin.getId(), token);

            return GraceJSONResult.ok();
        } else {
         return GraceJSONResult.errorCustom(ResponseStatusEnum.ADMIN_NOT_EXIT_ERROR);
        }
    }

service直接调用mapper 根据用户名查询用户并返回

    public AdminUser findUsernameByAdmin(String username) {
        QueryWrapper<AdminUser> adminUserQueryWrapper = new QueryWrapper<>();

        adminUserQueryWrapper.eq("username", username);

        return adminMapper.selectOne(adminUserQueryWrapper);
    }