☰

FileDownloader-Module

Module providing file download functionality with GET and POST support

当前为 2025-03-23 提交的版本，查看 最新版本。

此脚本不应直接安装，它是供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.cn-greasyfork.org/scripts/530648/1558616/FileDownloader-Module.js 

  1. // ==UserScript==
  2. // @name FileDownloader-Module
  3. // @namespace http://tampermonkey.net/
  4. // @version 1.0
  5. // @description Module providing file download functionality with GET and POST support
  6. // @author maanimis
  7. // @grant GM_xmlhttpRequest
  8. // @run-at document-start
  9. // ==/UserScript==
  10.  
  11. (function () {
  12.   'use strict';
  13.  
  14.   class FileDownloader {
  15.     static async fetchAsBlob(url, options = {}) {
  16.       const defaultOptions = {
  17.         method: 'GET',
  18.         headers: {},
  19.         body: null,
  20.       };
  21.  
  22.       const fetchOptions = { ...defaultOptions, ...options };
  23.  
  24.       return new Promise((resolve, reject) => {
  25.         GM_xmlhttpRequest({
  26.           method: fetchOptions.method,
  27.           url: url,
  28.           headers: fetchOptions.headers,
  29.           data: fetchOptions.body,
  30.           responseType: 'blob',
  31.           onload: function (response) {
  32.             if (response.status >= 200 && response.status < 300) {
  33.               resolve(response.response);
  34.             } else {
  35.               reject(new Error(`HTTP error! Status: ${response.status}`));
  36.             }
  37.           },
  38.           onerror: function (error) {
  39.             reject(new Error('Network error occurred'));
  40.           },
  41.         });
  42.       });
  43.     }
  44.  
  45.     static async fetchWithPost(url, data, headers = {}) {
  46.       const options = {
  47.         method: 'POST',
  48.         headers: {
  49.           'Content-Type': 'application/json',
  50.           ...headers,
  51.         },
  52.         body: JSON.stringify(data),
  53.       };
  54.       return this.fetchAsBlob(url, options);
  55.     }
  56.  
  57.     static async fetchWithFormData(url, formData, headers = {}) {
  58.       // When using FormData with GM_xmlhttpRequest, we don't need to set Content-Type
  59.       // as it will be set automatically with the correct boundary
  60.       const options = {
  61.         method: 'POST',
  62.         headers: {
  63.           ...headers,
  64.         },
  65.         body: formData,
  66.       };
  67.       return this.fetchAsBlob(url, options);
  68.     }
  69.  
  70.     static createObjectUrl(blob) {
  71.       return URL.createObjectURL(blob);
  72.     }
  73.  
  74.     static revokeObjectUrl(url) {
  75.       URL.revokeObjectURL(url);
  76.     }
  77.  
  78.     static triggerDownload(blob, filename) {
  79.       const url = this.createObjectUrl(blob);
  80.       const link = document.createElement('a');
  81.       link.href = url;
  82.       link.download = filename;
  83.       link.style.display = 'none';
  84.       document.body.appendChild(link);
  85.       link.click();
  86.       document.body.removeChild(link);
  87.       this.revokeObjectUrl(url);
  88.     }
  89.  
  90.     static openInNewTab(blob) {
  91.       const url = this.createObjectUrl(blob);
  92.       window.open(url);
  93.       return url;
  94.     }
  95.   }
  96.  
  97.   // Add to window as a module
  98.   window.FileDownloaderModule = FileDownloader;
  99.  
  100.   // Dispatch an event to notify other scripts that the module is loaded
  101.   const event = new CustomEvent('FileDownloaderModuleLoaded');
  102.   document.dispatchEvent(event);
  103.   console.log('FileDownloader module loaded');
  104. })();