Issue in uploading a file using Java program to server- server response gives [Content-Length] => 0

[Babu Singh]

Hi,

I am trying to upload a file to a server. I have write the client code in java. Server code is written in php.
I am getting Content-Length=0 in server response. But when I upload a file using chrome rest client it gives the content length. Here is my java client code:

	private String FileUploading(String url1) throws Exception
	  {
		int bytesRead, bytesAvailable, bufferSize;
	  	byte[] buffer;
	   	int maxBufferSize = 1*1024*1024;
 		FileInputStream fileInputStream=null;
		HttpsURLConnection connection=null;
		DataOutputStream dos = null;
         	FileInputStream fileInputStream=null;
	        HttpsURLConnection connection=null;
		DataOutputStream dos = null;
	try{
		File fl=new File("D://abc.txt");
		fileInputStream = new FileInputStream(fl);
		url = new URL(url1);
		connection = (HttpsURLConnection) url.openConnection();
		connection.setReadTimeout(15*1000);
	    	connection.setRequestProperty ("Authorization", "aaa " + "abc123ss556");
		connection.setRequestProperty ("date_param", "123456");
                connection.setRequestProperty ("userid", "aaa");
	        connection.setRequestProperty ("pwd", "111");
		connection.setRequestProperty("Connection", "Keep-Alive");
		connection.setRequestProperty("ENCTYPE", "multipart/form-data");
	        connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
	        connection.setRequestProperty("uploaded_file", fl.getName());
	       String contentDisposition = "Content-Disposition: form-data; name=\"userfile\"; filename=\"" + fl.getName() + "\"";
	       connection.setRequestProperty ("Content-Disposition", contentDisposition);
               connection.setRequestMethod("POST");
	       connection.setUseCaches(false);
	       connection.setDoInput(true);
	       connection.setDoOutput(true);
	       connection.connect();
	      dos = new DataOutputStream(connection.getOutputStream());
	      int responseCode = connection.getResponseCode();
	      int responseCode = connection.getResponseCode();
	      dos.writeBytes(twoHyphens + boundary + lineEnd);
	      dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\"" + fl.getName() + "\"" + lineEnd);
	      dos.writeBytes(lineEnd);
	      bufferSize = Math.min(bytesAvailable, maxBufferSize);
              buffer = new byte[bufferSize];
              bytesRead = fileInputStream.read(buffer, 0, bufferSize); 
    		while (bytesRead > 0) {
         	 dos.write(buffer, 0, bufferSize);
          	  bufferSize = Math.min(bytesAvailable, maxBufferSize);
       	  	 bytesRead = fileInputStream.read(buffer, 0, bufferSize);  
     		 }
   		   dos.writeBytes(lineEnd);
    		  dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
    		  int serverResponseCode = connection.getResponseCode();
    		  System.out.println(serverResponseCode);
    		  String serverResponseMessage = connection.getResponseMessage();
    		  System.out.println(serverResponseMessage);
    		  fileInputStream.close();
 		  dos.flush();
 		 dos.close();
  			}
  		catch (MalformedURLException ex)
  		{
  			ex.printStackTrace();
 		 }
		  catch (IOException ioe)
		  {
		  	ioe.printStackTrace();
		  }
 		   catch(Exception e){
 		  	e.printStackTrace();
   	 }
  	//------------------ read the SERVER RESPONSE
		  try {
	        inStream = new DataInputStream ( connection.getInputStream() );
    	    String str;
   	     while (( str = inStream.readLine()) != null)
   	     {
  	      	System.out.println("Server Response "+str);
  	      }
     	   inStream.close();
  			}
  			catch (Exception e){
  				e.printStackTrace();
  				}
  		return null;
  	  }
	  }

Here is server response:

200
OK
Server Response 
Server Response Array
Server Response (
Server Response     [Authorization] => Basic abc123ss556
Server Response     [Content-Disposition] => Content-Disposition: form-data; name="userfile"; filename="abc.txt"
Server Response     [date_param] => 123456
Server Response     [userid] => aaa
Server Response     [pwd] => 111
Server Response     [filedata] => filedata
Server Response     [ENCTYPE] => multipart/form-data
Server Response     [Content-Type] => multipart/form-data;boundary=*****
Server Response     [uploaded_file] => abc.txt
Server Response     [Cache-Control] => no-cache
Server Response     [Pragma] => no-cache
Server Response     [User-Agent] => Java/1.7.0_51
Server Response     [Host] => 10.112.1455.933
Server Response     [Accept] => text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Server Response     [Connection] => keep-alive
Server Response     [Content-Length] => 0
Server Response )

please suggest to solve the issue.

Thanks.

[Carey Brown]

I don't see where you are setting the Content-length prior to uploading.

[Babu Singh]

I have made some changes now it show the content length but file are not reaching to server.
here is the code:

import java.net.*;
import java.io.*;
public class HTTP_post
{
     static URL u=null;
    public static void main(String args[])
    {
	DataInputStream inStream = null;
	HTTP_post post = new HTTP_post();  
	FileInputStream  fileInputStream=null;
	HttpURLConnection connection=null;
    int bytesRead, bytesAvailable, bufferSize;
	byte[] buffer;
	int maxBufferSize = 1*1024*1024;
	DataOutputStream dstream=null;
	try
	{
		String boundary =  "*****";
		File fl=new File("D://abc.txt");		 
		    fileInputStream = new FileInputStream(fl);
		  post.u = new URL("http://10.112.1455.933");
		  connection = (HttpURLConnection) u.openConnection();

 connection.setRequestProperty ("Authorization", "aaa " + "abc123ss556");
    connection.setRequestProperty ("date_param", "123456");
            connection.setRequestProperty ("userid", "aaa");
        connection.setRequestProperty ("pwd", "111");
    connection.setRequestProperty("Connection", "Keep-Alive");
    connection.setRequestProperty("ENCTYPE", "multipart/form-data");
        connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
        connection.setRequestProperty("uploaded_file", fl.getName());
       String contentDisposition = "Content-Disposition: form-data; name=\"userfile\"; filename=\"" + fl.getName() + "\"";
       connection.setRequestProperty ("Content-Disposition", contentDisposition);
           connection.setRequestMethod("POST");
	      connection.setUseCaches(false);
	      connection.setDoInput(true);
	      connection.setDoOutput(true);
	     dstream = new DataOutputStream(connection.getOutputStream());    
		int read = 0;
	    bytesAvailable = fileInputStream.available();
	    bufferSize = Math.min(bytesAvailable, maxBufferSize);
	    buffer = new byte[bufferSize];
	    int x;
	    while ( (x = fileInputStream.read()) != -1)
	    {	
	    	
	    	 dstream.write(buffer, 0, bufferSize);
	    }
	  	    
	}
	catch (IOException e)
	{ 
	    e.printStackTrace();
	}
	
	try {
		dstream.flush();
		dstream.close();
	} catch (IOException e1) {
		e1.printStackTrace();
	}
	
	 try {
		  
	        inStream = new DataInputStream ( connection.getInputStream() );
	        String str;
	        while (( str = inStream.readLine()) != null)
	        {
	        	System.out.println("Server Response "+str);
	        }
	        inStream.close();
	  		}
	  		catch (Exception e){
	  				e.printStackTrace();
	  			}
	 
    }
}

server response:

Server Response Array
Server Response (
[Authorization] => Basic
UHBvX1Jlc3RfVXNyXzJLOkFlQmEkX184OSElXl56cQ==
[Content-Disposition] => Content-Disposition: form-data; name="userfile"; filename="abc.txt"
     [date_param] => 20150410
     [userid] => aaa
     [pwd] => 123
     [filedata] => filedata
     [ENCTYPE] => multipart/form-data
  [Content-Type] => multipart/form-data;boundary=*****
   [uploaded_file] => abc.txt
   [Cache-Control] => no-cache
  [Pragma] => no-cache
     [User-Agent] => Java/1.7.0_51
   [Host] => 10.112.1455.933
     [Accept] => text/html, image/gif, image/jpeg, *;
q=.2, */*; q=.2
     [Connection] => keep-alive
     [Content-Length] => 3481
 )
 abc.txt Uploading failed...

But when I upload a file using chrome rest client, file are uploaded sucessfully.
server response:

Array
(
    [filedata] => Array
        (
            [name] => abc.txt
            [type] => text/plain
            [tmp_name] => /tmp/phpbXwzdq
            [error] => 0
            [size] => 59
        )
)
file copied

please suggest to solve the issue.

[Carey Brown]

Babu Singh wrote:I have made some changes now it show the content length but file are not reaching to server.

I still don't see Content-Length appearing around line 34.