activity/src/utils/request.js

import config from "../config/index.js";
import { showLoadingToast, showToast, closeToast } from "vant";
import "vant/lib/toast/style/index";

function getdata(data) {
  let text = "";
  for (const key in data) {
    text += key + "=" + data[key] + "&";
  }
  text ? (text = "?" + text) : "";
  text = text.replace(/&$/, "");
  return text;
}

export default function (ori) {
  let baseurl = config.base[ori.urlType || "ajax"];
  let url = baseurl + ori.url;
  let isEnd = false;
  let noToast = ori.noToast;
  let defaultErrorToast = ori.errorToast || "请求失败!";
  let time = setTimeout(() => {
    clearTimeout(time);
    !isEnd &&
      !ori.noLoad &&
      showLoadingToast({
        message: "加载中...",
        forbidClick: true,
        duration: 0,
      });
  }, 300);
  return new Promise((resolve, reject) => {
    var xhttp;
    if (window.XMLHttpRequest) xhttp = new XMLHttpRequest();
    else if (window.ActiveXObject)
      xhttp = new window.ActiveXObject("Microsoft.XMLHTTP");
    let method = ori.method.toUpperCase();
    if (method === "GET") url += getdata(ori.data || {});
    xhttp.open(method, url, true);
    const headers = Object.keys(ori.header);
    for (let i = 0; i < headers.length; i++) {
      let key = headers[i];
      if (key === 'contentType') {
        key = 'Content-Type';
        ori.header[key] = ori.header['contentType']
      }
      xhttp.setRequestHeader(key, ori.header[key]);
    }
    if (ori.isFormData) {
      xhttp.send(ori.data);
    } else {
      xhttp.setRequestHeader("Content-type", 'application/json');
      method === "GET" ? xhttp.send() : xhttp.send(JSON.stringify(ori.data));
    }
    xhttp.onreadystatechange = function () {
      if (this.readyState != 4) return;
      isEnd = true;
      closeToast();
      if (this.status != 200) {
        let t = JSON.parse(this.responseText || "{}");
        !noToast && showToast(t.message || defaultErrorToast);
        reject(t);
        return;
      }
      let data = {};
      try {
        data =
          this.responseText !== "null"
            ? JSON.parse(this.responseText || "{}")
            : {};
      } catch (err) {
        !noToast && showToast(defaultErrorToast);
        console.error(err);
        reject(err);
      }
      if (data.code === 0 || ori.next) resolve(data.data || data);
      else reject(data);
    };
  });
}