Convert PDFs to Google docs and get extracted text along with link to original PDF file into a spreadsheet

问题

I'm just facing a little problem in getting the link to the PDF file when I run a script to convert PDF files to Google docs with OCR then populate the results into a google sheets.

So far I get the name of the file created (Google Docs) and the extracted text.

what I'm trying to achieve: on the 3rd column, I'd like to get the link of the PDF file corresponding to the Google docs created

I've tried to include the variable pdf to the push array:

    var pdf = document.getId();
...
    output.push([name, body, pdf]);

but I get the same ID for all files. Ideally I'd like to get the full link to the PDF file and not only it's ID, to avoid having to create a column with:

=CONCATENATE("https://drive.google.com/file/d/",C2)

where C2 contains the ID of the PDF file.

Here is the code:

function extractTextOnOpen() {



var folderName = "OCR TESTS";

   var sheetId = "SHEET'S ID HERE";

  //Define Project folder

var folder = DriveApp.getFoldersByName(folderName).next();
var folderId = folder.getId();

//Find all PDFs in folder

var documents = folder.getFilesByType("application/pdf");
while (documents.hasNext()) {

    //Convert each PDF to a Google Doc with OCR
    var document = documents.next();

    // Get the PDF link to insert in the sheet for reference

    var pdf = document.getId();


    var imageName = document.getName();
    var docName = imageName.split("\.")[0];
    var file = {
        title: docName,
        mimeType: "application/pdf"
        // for images, use: "image/png"

    }
    Drive.Files.insert(file, document, { ocr: true });

    //Store newly-created Google Doc in the same project folder

    var newFile = DriveApp.getFilesByName(docName).next();
    folder.addFile(newFile);
    var rootFolder = DriveApp.getRootFolder();
    rootFolder.removeFile(newFile);
}

//Find all Google Docs in the project folder

var docs = folder.getFilesByType("application/vnd.google-apps.document");

//Set up spreadsheet

var ss = SpreadsheetApp.openById(sheetId);
SpreadsheetApp.setActiveSpreadsheet(ss);
Logger.log('File name: ' + ss.getName());


  // specify the sheet to insert the results

 var sheet = ss.getSheetByName('Sheet1');


// Set up the spreadsheet to display the results

 var headers = [["File Name", "Test Paper Scanned", "PDF Link"]];
  sheet.getRange("A1:C").clear()
  sheet.getRange("A1:C1").setValues(headers);


 var output = [];

//Populate spreadsheet with OCR text

while (docs.hasNext()) {
    var file = docs.next();
    var docId = file.getId();
    var doc = DocumentApp.openById(docId);
    var name = doc.getName();
    var body = doc.getBody().getText();

       output.push([name, body, pdf]);

   // write data to the sheet

  sheet.getRange(2, 1, output.length, 3).setValues(output);

}};

回答1:

You have an unnecessary loop and so you're losing your opportunity to save the PDF URLs. I've changed the order of your code to show you how this works. Essentially, all of the work happens within the first loop where you iterate through the PDFs.*

function extractTextOnOpen() {
  var folderName = "OCR TESTS";
  var sheetId = "SHEET'S ID HERE";

  //Set up spreadsheet
  var ss = SpreadsheetApp.openById(sheetId);

  // specify the sheet to insert the results  
  var sheet = ss.getSheetByName("Sheet1");

  // Set up the spreadsheet to display the results
  var headers = ["File Name", "Test Paper Scanned", "PDF Link"];
  sheet.getRange("A1:C").clear()
  var output = [headers];

  //Define Project folder
  var folder = DriveApp.getFoldersByName(folderName).next();
  var folderId = folder.getId();

  //Find all PDFs in folder
  var pdfs = folder.getFilesByType("application/pdf");
  while (pdfs.hasNext()) {
    //Convert each PDF to a Google Doc with OCR
    var pdf = pdfs.next();    
    var imageName = pdf.getName();
    var docName = imageName.split("\.")[0];
    var file = {
      title: docName,
      mimeType: "application/pdf"
    };
    var driveFile = Drive.Files.insert(file, pdf, { ocr: true });

    //Store newly-created Google Doc in the same project folder
    var newFile = DriveApp.getFileById(driveFile.id);
    folder.addFile(newFile);
    var rootFolder = DriveApp.getRootFolder();
    rootFolder.removeFile(newFile);

    //Get the Google Doc data
    var doc = DocumentApp.openById(driveFile.id);
    var name = doc.getName();
    var body = doc.getBody().getText();
    output.push([name, body, pdf.getUrl()]);
  }
  //Print to the sheet
  sheet.getRange(1, 1, output.length, output[0].length).setValues(output);
}

In the code above, note that the Drive API returns a file, so that's used in the proceeding .getFileById() calls. You can then use either .getUrl() or .getDownloadUrl().

var driveFile = Drive.Files.insert(file, pdf, { ocr: true });

//Store newly-created Google Doc in the same project folder
var newFile = DriveApp.getFileById(driveFile.id);

Also, you're using the batch .setValues(), which is faster, but you have it in a loop. I updated the script to print to the sheet only once at the very end.

* If you really wanted to go through two loops of PDFs and then Google Docs, then you'd need to map the PDF IDs to the Google Doc IDs in that first loop.

回答2:

What about the method getUrl()?

Sample:

var pdf = document.getUrl();

来源：https://stackoverflow.com/questions/59245461/convert-pdfs-to-google-docs-and-get-extracted-text-along-with-link-to-original-p