Json Web Token在前后端实践思考分析

public async Task<dynamic> Login([FromServices] IAuthService authService, [FromBody] FormLoginRequest loginModel)
{
  return await authService.login(loginModel);
  // authoService.login中的逻辑
  // 判断是否匹配，匹配成功
  // 创建token并写入redis,并设置超期时间
  // 之前业务接口调用时，直接从redis中获取
  // 如果有超期，返回给前端一个标识
}

  AllowAnonymousAttribute allowAnonymousAttribute = descriptor.MethodInfo.GetCustomAttribute<AllowAnonymousAttribute>(false);
  // 判断可不验证token的接口
  if (allowAnonymousAttribute != null)
  {
      await next(); 
      return;
  }
  //获取请求头中的Authorization
  string token = context.HttpContext.Request.Headers["Authorization"];
  // 相当于对前端传递的token进行转换
  string tokenKey = "sso." + Utils.MD5(token);
  // redis获取，看看是否有效，直接取出返回
  string loginUserJson = await RedisHelper.GetAsync(tokenKey);
  if (!loginUserJson.IsNullOrWhiteSpace()) {
    RedisSSOVerifyResult resultInfo = JsonSerializer.Deserialize<RedisSSOVerifyResult>(loginUserJson);
    if(resultInfo.ExpiresAt > DateTime.now()) {
      loginUser = resultInfo.LoginUser;
    }
    else {
      RedisHelper.RemoveAsync(tokenKey); // 无效了 从redis中移除
      throw new ValidException("Token认证过期，请重新登录", -2);  // 这里用-2跟前端做好约定
    }
  } else {
    throw new ValidException("Token认证过期，请重新登录", -2);  // 这里用-2跟前端做好约定
  }

  const adminLogin = async () => {
      //   state.loading = true
      const res = await loginByMobile({
        mobile: state.loginForm.phone,
        captchaValue: state.loginForm.verificationCode,
      });
      state.loading = false;
      if (res?.code === 200) {
        localStorage.setItem(
          "token",
          JSON.stringify({
            ...res.data,
            account: state.loginForm.phone,
          })
        );
        store.dispatch("fetchMenu");
      }
    };

    async fetchMenu({ commit }) {
      try {
        const information = await getMyInformation()
        if (information?.code === 200) {
          console.log(information, 'information')
          commit("setMyInformation" , information.data)
          const res = await getMyMenu()
          if(res?.code === 200) {
            commit("changeMenuList",res.data)
            window.location.href = "/"
          }
        }
      } catch (error) {
      }
    },

instance.interceptors.request.use(
  (request) => {
    const token = localStorage.token
      ? JSON.parse(localStorage.token)
      : {};
    request.headers = {
      "Authorization": token.authorization || '',
      "Content-Type": "application/x-www-form-urlencoded",
      "Content-Type": "application/json",
    };
    return request;
  },
  (error) => Promise.reject(error)
);

instance.interceptors.response.use(
  (response) => {
    // token
    if (response.data.code === -2) {   
      // token失效
      ElMessage({
        message: "身份认证无效，请重新登录",
        type: "warning",
      });
      // localStorage.clear();
      clear()
      window.location.href = "/";
      return false;
    }
    if (response.data.code !== 200) {
      return Promise.reject(new Error(response.data.message));
    }
    /// ..... 其他的逻辑判断
    return response.data;
  },
}

router.beforeEach((to, _from, next) => {
  NProgress.start()
  if (to.path === '/login' || to.path === '/init-password' ||  to.path === '/login-cellphone') {
    next()
    return false;
  }
  if (!localStorage.getItem('token')) {
    next('/login')
    return false
  }
  if (to.name) {
    next()
    return false
  }
  if (childrenPath.some((item) => to.path.includes(item))) {
    next()
    console.log('child');
    return false
  }
  // 如果找不到路由跳转到404
  next("/404")
  return false
})