妈蛋,总算搞定了,明天刘老板自己搞

src/entry/background.js

@@ -3,6 +3,7 @@
  **/
 
 import {getSign} from "@/api/aliExpress";
+import qs from "query-string"
 
 /**
  * 根据图片URL获取Blob对象
@@ -127,16 +128,14 @@ chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
     new Promise(async (resolve) => {
       let headers = {};
       headers['Content-Type'] = 'text/html';
-      headers.cookie = await getAliexpressCookie(request.url);
-      const {_m_h5_c, _m_h5_tk} = cookie2Obj(headers.cookie)
-      const {appKey, formData} = request
+      const cookie = await getAliexpressCookie(request.url);
+      const {_m_h5_c, _m_h5_tk} = cookie2Obj(cookie)
+      const {query: {data, appKey}} = qs.parseUrl(request.url)
+      const {formData = data} = request
       const {sign, t} = getSign(_m_h5_c || _m_h5_tk, appKey, formData)
-      const url = new URL(request.url)
-      let params = new URLSearchParams(url.search);
-      params.append('t', t)
-      params.append('sign', sign)
-      url.search = params.toString()
-      Promise.resolve().then(() => fetch(url.toString(), {
+      const url = qs.stringifyUrl({url: request.url, query: {sign, t}})
+      headers.cookie = await getAliexpressCookie(url);
+      Promise.resolve().then(() => fetch(url, {
         'headers': headers, 'method': 'POST', 'referrerPolicy': 'no-referrer', 'credentials': 'include', 'mode': 'cors'
       })).then((res) => {
         // 创建了一个数据读取器