How to write content into pdf? Google Cloud Storage Service

[Rob Curtis via StackOverflow]

It doesn't look like you are creating a pdf formatted file (you're just making a file with the extension pdf). You need to use a library like itext to create the pdf file and then write it to cloudstorage.

e.g using itext to write to outputstream src:

   Document document = new Document();
   PdfWriter.getInstance(document, response.getOutputStream());
   document.open();
   document.add(new Paragraph("This is a paragraph"));
   document.close();

You'd need to modify the above code to write to gcs (instead of response outputstream).

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