谷歌脚本；不支持从格式 application/pdf 转换为 application/pdf

问题描述

我需要帮助解决此代码问题。我收到未记录的错误。

API 已启用并遵循原始帖子的说明：ERROR Get pdf-attachments from Gmail as text 但它在我的情况下不起作用。

出现错误：

var blob = attachments[0].getAs(MimeType.PDF);
Converting from application/octet-stream to application/pdf is not supported.  (line 16,file "bla bla")

因此，我将附件的 contentType 设置为“appl‌ ication/pdf”。

var attachments = message.getAttachments();
attachments[0].setContentType("appl‌​ication/pdf");

然后，我又犯了一个错误：

Exception: Converting from appl‌​ication/pdf to application/pdf is not supported.(line 17,file "bla bla")

原始代码未更改：

 /**
  * Get messages labeled 'templabel',and send myself the text contents of
  * pdf attachments in new emails.
  */
 function myFunction() {

   var threads = GmailApp.search('label:invoices-parsed');
   var threadsMessages = GmailApp.getMessagesForThreads(threads);

   for (var thread = 0; thread < threadsMessages.length; ++thread) {
     var message = threadsMessages[thread][0];
     var messageBody = message.getBody();
     var messageSubject = message.getSubject();
     var attachments = message.getAttachments();
     attachments[0].setContentType("appl‌​ication/pdf");

     var blob = attachments[0].getAs(MimeType.PDF);
     var filetext = pdfToText( blob,{keepTextfile: false} );

     GmailApp.sendEmail(Session.getActiveUser().getEmail(),messageSubject,filetext);
   }
 }

 /**
  * See gist: https://gist.github.com/mogsdad/e6795e438615d252584f
  *
  * Convert pdf file (blob) to a text file on Drive,using built-in OCR.
  * By default,the text file will be placed in the root folder,with the same
  * name as source pdf (but extension 'txt'). Options:
  *   keepPdf (boolean,default false)     Keep a copy of the original PDF file.
  *   keepGdoc (boolean,default false)    Keep a copy of the OCR Google Doc file.
  *   keepTextfile (boolean,default true) Keep a copy of the text file.
  *   path (string,default blank)         Folder path to store file(s) in.
  *   ocrLanguage (ISO 639-1 code)         Default 'en'.
  *   textResult (boolean,default false)  If true and keepTextfile true,return
  *                                        string of text content. If keepTextfile
  *                                        is false,text content is returned without
  *                                        regard to this option. Otherwise,return
  *                                        id of textfile.
  *
  * @param {blob}   pdfFile    Blob containing pdf file
  * @param {object} options    (Optional) Object specifying handling details
  *
  * @returns {string}          id of text file (default) or text content
  */
 function pdfToText ( pdfFile,options ) {
   // Ensure Advanced Drive Service is enabled
   try {
     Drive.Files.list();
   }
   catch (e) {
     throw new Error( "To use pdfToText(),first enable 'Drive API' in Resources > Advanced Google Services." );
   }

   // Set default options
   options = options || {};
   options.keepTextfile = options.hasOwnProperty("keepTextfile") ? options.keepTextfile : true;

   // Prepare resource object for file creation
   var parents = [];
   if (options.path) {
     parents.push( getDriveFolderFromPath (options.path) );
   }
   var pdfName = pdfFile.getName();
   var resource = {
     title: pdfName,mimeType: pdfFile.getContentType(),parents: parents
   };

   // Save PDF to Drive,if requested
   if (options.keepPdf) {
     var file = Drive.Files.insert(resource,pdfFile);
   }

   // Save PDF as GDOC
   resource.title = pdfName.replace(/pdf$/,'gdoc');
   var insertOpts = {
     ocr: true,ocrLanguage: options.ocrLanguage || 'en'
   }
   var gdocFile = Drive.Files.insert(resource,pdfFile,insertOpts);

   // Get text from GDOC  
   var gdocDoc = DocumentApp.openById(gdocFile.id);
   var text = gdocDoc.getBody().getText();

   // We're done using the Gdoc. Unless requested to keepGdoc,delete it.
   if (!options.keepGdoc) {
     Drive.Files.remove(gdocFile.id);
   }

   // Save text file,if requested
   if (options.keepTextfile) {
     resource.title = pdfName.replace(/pdf$/,'txt');
     resource.mimeType = MimeType.PLAIN_TEXT;

     var textBlob = Utilities.newBlob(text,MimeType.PLAIN_TEXT,resource.title);
     var textFile = Drive.Files.insert(resource,textBlob);
   }

   // Return result of conversion
   if (!options.keepTextfile || options.textResult) {
     return text;
   }
   else {
     return textFile.id
   }
 }

 // From: http://ramblings.mcpher.com/Home/excelquirks/gooscript/driveapppathfolder
 function getDriveFolderFromPath (path) {
   return (path || "/").split("/").reduce ( function(prev,current) {
     if (prev && current) {
       var fldrs = prev.getFoldersByName(current);
       return fldrs.hasNext() ? fldrs.next() : null;
     }
     else { 
       return current ? null : prev; 
     }
   },DriveApp.getRootFolder()); 
 }

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）