java - response.sendRedirect from a servlet redirects to a pdf which should get downloaded -

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Can you please help me 1) How to open PDF in a new browser tab or window? (Or) 2) PDF should download directly to the local system.

I am using this, 

  response.reset (); Response.setContentType ("application / octet stream"); Response.setHeader ("content-displacement", "attachment; filename = \" "+" zseriessection9.pdf "+" \ ""); Response.sendRedirect (referencepath + "/ zseriessection9.pdf");    
 
 
 You should be below the parameters,  
  ByteArrayOutputStream Baos = new byteOutStream (); Response.setContentType ("application / PDF"); Response.setHeader ("content-dispute", "attachment; file name = sample.pdf"); OutputStream OS = response.getOutputStream (); Baos.writeTo (OS); Os.flush (); Os.close ();   
 This will show a browser window to  open  or  saved  pdf file. Moves the trick here and redirects it, because it creates a new request

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