SEEC-II-FrontEnd/src/util/request.js

// ant-design-pro request.js file with MIT license
import "whatwg-fetch";
import router from "@/router";
import { LOGIN_ROUTER } from "@/router/name";

const codeMessage = {
  200: "服务器成功返回请求的数据。",
  201: "新建或修改数据成功。",
  202: "一个请求已经进入后台排队（异步任务）。",
  204: "删除数据成功。",
  400: "发出的请求有错误，服务器没有进行新建或修改数据的操作。",
  401: "用户没有权限（令牌、用户名、密码错误）。",
  403: "用户得到授权，但是访问是被禁止的。",
  404: "发出的请求针对的是不存在的记录，服务器没有进行操作。",
  406: "请求的格式不可得。",
  410: "请求的资源被永久删除，且不会再得到的。",
  422: "当创建一个对象时，发生一个验证错误。",
  500: "服务器发生错误，请检查服务器。",
  502: "网关错误。",
  503: "服务不可用，服务器暂时过载或维护。",
  504: "网关超时。"
};

function checkStatus(response) {
  if (response.status >= 200 && response.status < 300) {
    return response;
  }
  const errortext = codeMessage[response.status] || response.message;
  const error = new Error(errortext);
  error.name = response.status;
  error.response = response;
  throw error;
}

/**
 * Requests a URL, returning a promise.
 *
 * @param  {string} url       The URL we want to request
 * @param  {{method:string,body}} [options] The options we want to pass to "fetch"
 * @return {object}           An object containing either "data" or "err"
 */
export default async function request(url, options) {
  const defaultOptions = {
    credentials: "include"
  };
  const newOptions = { ...defaultOptions, ...options };
  if (
    newOptions.method === "POST" ||
    newOptions.method === "PUT" ||
    newOptions.method === "DELETE"
  ) {
    if (!(newOptions.body instanceof FormData)) {
      newOptions.headers = {
        Accept: "application/json",
        "Content-Type": "application/json; charset=utf-8",
        ...newOptions.headers
      };
      newOptions.body = JSON.stringify(newOptions.body);
    } else {
      // newOptions.body is FormData
      newOptions.headers = {
        Accept: "application/json",
        ...newOptions.headers
      };
    }
  }

  const response = await fetch(url, newOptions);
  try {
    checkStatus(response);
  } catch (e) {
    if (e.name !== 418) {
      router.push({ name: LOGIN_ROUTER });
    } else {
      throw new Error(e);
    }
  }

  if (newOptions.method === "DELETE" || response.status === 204) {
    return response.text();
  }

  return response.json();
}