CODEWITHSUNDEEP
javaservletsprintwriter
Yanni
Yanni

Reputation: 103

How can'i save the result of a PrintWriter in file instead of display it in the console

I have this example which displays the result in a console

HttpServletResponse presponse
presponse.setContentType(text/xml; charset=UTF-8)

PrintWriter lout = presponse.getWriter();
lout.println(var);
lout.close();

But i want to save the result in downloadable file instead of display it in the console can you help me please

Upvotes: 0

Views: 228

Answers (2)

Sajan Chandran
Sajan Chandran

Reputation: 11487

You can do something like, you need to set correct mime-type and content-length header.

    File downloadFile = new File(filePath);
    FileInputStream inStream = new FileInputStream(downloadFile);

    // obtains response's output stream
    OutputStream outStream = response.getOutputStream();

    byte[] buffer = new byte[4096];
    int bytesRead = -1;

    while ((bytesRead = inStream.read(buffer)) != -1) {
        outStream.write(buffer, 0, bytesRead);
    }

    inStream.close();
    outStream.close();

Upvotes: 0

Costi Ciudatu
Costi Ciudatu

Reputation: 38205

If you do not want to provide the file content as the HTTP response payload, you should not write it into response.getWriter(). By the way, you're not "displaying it in the console", you're sending it as the HTTP response to the client's request.

To save a file with that content on the local disk, just create a FileOutputStream and write the file content in there.

As for the HTTP response, just provide the URL to the newly created downloadable file (as a Location header or whatever).

Upvotes: 1

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