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  1. #1
    Boomn4x4 is offline Member
    Join Date
    Nov 2011
    Rep Power

    Default Content-Dispostion Error

    I'm having trouble sending an http request to a web service that contains a file's data. The web service expects the files binary stream as "blob" field. When I'm sending the request, I'm getting a HTTP Status 400 - java.lang.RuntimeException: Could find no Content-Disposition header within part. I don't understand why.

    Java Code:
    byte[] fileData = new byte[(int) file.length()];
    	    FileInputStream bfis = new FileInputStream(file);;
    	    String blob = "";
    	    for(byte b: fileData){
    	    	blob += getBits(b);
    	    String basestring = server + "/v1/" + reqId;
    	 //   String test = base64.toString();
    		URL obj2 = new URL(basestring + "/operations");
    		HttpURLConnection con2 = (HttpURLConnection) obj2.openConnection();
    		con2.setRequestProperty("Content-Type", "multipart/form-data;boundary=DkdHd939dDDksl333Dkad");
    		con2.setRequestProperty("Content-Disposition", "form-data; name=\"" + file.getName() + "\"; filename=\"" + file.getName() + "\"");
    		con2.setRequestProperty("Accept-Encoding", "multipart/form-data");
    		con2.setRequestProperty("blob", blob);
    		con2.setRequestProperty("filename", file.getName());
    		con2.setRequestProperty("checksum", checksum);
    		con2.setRequestProperty("accept", "application/json");
    		rc = con2.getResponseCode();
    		System.out.println("Ops Reply Code: " + rc);
    		if (rc >= 400){
    			in = new BufferedReader(new InputStreamReader(con2.getErrorStream()));
    			in = new BufferedReader(new InputStreamReader(con2.getInputStream()));
    		inLine = new String();
    		resp = new StringBuffer();
    		while ((inLine = in.readLine()) != null ){

    Any help would be appreciated.

  2. #2
    Norm's Avatar
    Norm is offline Moderator
    Join Date
    Jun 2008
    Eastern Florida
    Rep Power

    Default Re: Content-Dispostion Error

    Is this an HTTP user problem?
    If you don't understand my response, don't ignore it, ask a question.

  3. #3
    gimbal2 is offline Just a guy
    Join Date
    Jun 2013
    Rep Power

    Default Re: Content-Dispostion Error

    The 400 HTTP code seems to be a custom response from the web service, you'll have to ask the people maintaining it what's wrong with your request format, or check any documentation that I hope is available.

    That being said: you set doOutput() to true yet your code does not call conn2.getOutputStream() and write a request body. What happens when you set doOutput to false?
    "Syntactic sugar causes cancer of the semicolon." -- Alan Perlis

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