upload image in localhost:8080

file_upload.java

    private int uploadImage(File imageFile) {
    	
    	int serverResponseCode = -1;
        String fileName = imageFile.getName();

        String lineEnd = "\r\n";
        String twoHyphens = "--";
        String boundary = "*****";
        int bytesRead, bytesAvailable, bufferSize;
        byte[] buffer;
        int maxBufferSize = 1 * 1024 * 1024;
        
        HttpURLConnection conn = null;
         
         try {
             // open a URL connection to the Servlet
             FileInputStream fileInputStream = new FileInputStream(imageFile);
             URL url = new URL(Settings.URL_BASE + Settings.URL_UPLOAD_IMAGE);
              
             // Open a HTTP  connection to  the URL
             int timeout = 20 * 1000; // 20 seconds
             conn = (HttpURLConnection) url.openConnection();
             conn.setReadTimeout(timeout);
             conn.setConnectTimeout(timeout);
             conn.setRequestMethod("POST");
             conn.setDoInput(true); // Allow Inputs
             conn.setDoOutput(true); // Allow Outputs
             conn.setUseCaches(false); // Don't use a Cached Copy
             conn.setRequestProperty("Connection", "Keep-Alive");
             conn.setRequestProperty("ENCTYPE", "multipart/form-data");
             conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
             conn.setRequestProperty("file", "\"" + fileName + "\"");
             
             DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
    
             dos.writeBytes(twoHyphens + boundary + lineEnd);
             dos.writeBytes("Content-Disposition: form-data;" +
            		 		"name=image-file;" +
            		 		"filename="+ fileName + lineEnd);
              
             dos.writeBytes(lineEnd);
    
             // create a buffer of  maximum size
             bytesAvailable = fileInputStream.available(); 
    
             bufferSize = Math.min(bytesAvailable, maxBufferSize);
             buffer = new byte[bufferSize];
    
             // read file and write it into form...
             bytesRead = fileInputStream.read(buffer, 0, bufferSize);  
                
             while (bytesRead > 0) {
            	 dos.write(buffer, 0, bufferSize);
            	 bytesAvailable = fileInputStream.available();
            	 bufferSize = Math.min(bytesAvailable, maxBufferSize);
            	 bytesRead = fileInputStream.read(buffer, 0, bufferSize);
             }
    
             // send multipart form data necesssary after file data...
             dos.writeBytes(lineEnd);
             dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
    
             // Responses from the server (code and message)
             serverResponseCode = conn.getResponseCode();
             String serverResponseMessage = conn.getResponseMessage();
               
             Debug.log("HTTP Response is : "
                     + serverResponseMessage + ": " + serverResponseCode);
              
             if( serverResponseCode == HttpURLConnection.HTTP_OK ) {
            	 Debug.log("Success!");
             }
              
             //close the streams //
             fileInputStream.close();
             dos.flush();
             dos.close();
               
        } 
         catch (Exception e) {
        	Debug.log("Exception : " + e.getMessage());  
        } 
         finally {
        	if ( conn != null ) {
        		conn.disconnect();
        	}
        }
        return serverResponseCode; 
    }