Android Open Source - CopresenceDataCollector Http File Uploader

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License

The source code is released under:

Copyright (c) 2014, Xiang Gao All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Re...

Java Source Code

package org.sesy.coco.datacollector.communication;
//from ww  w.  j a v  a  2 s .  co m
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.sesy.coco.datacollector.Constants;

import android.content.Context;
import android.util.Log;

public class HttpFileUploader implements Runnable{
  
  private Context _context;
  private String sourceFileUri;
  private int serverResponseCode = 0;
  
  public HttpFileUploader(Context context, String sourceFileUri){
    this._context = context;
    this.sourceFileUri = sourceFileUri;
  }

  public int doUpload(boolean isLog){
    uploadFile(sourceFileUri, isLog);
    return serverResponseCode;
  }
  
  public int uploadFile(String sourceFileUri, boolean isLog) {
        String upLoadServerUri = null;
        if(!isLog){
          upLoadServerUri = "http://"+Constants.UPLOAD_SERVER_INET+Constants.UPLOAD_SERVER_DIR;
        }else{
          upLoadServerUri = "http://"+Constants.UPLOAD_SERVER_INET+Constants.UPLOAD_SERVER_LOG_DIR;
        }
        String fileName = sourceFileUri;

        HttpURLConnection conn = null;
        DataOutputStream dos = null;  
        String lineEnd = "\r\n";
        String twoHyphens = "--";
        String boundary = "*****";
        int bytesRead, bytesAvailable, bufferSize;
        byte[] buffer;
        int maxBufferSize = 5 * 1024 * 1024; 
        File sourceFile = new File(sourceFileUri); 
        if (!sourceFile.isFile()) {
         Log.e("uploadFile", "Source File Does not exist");
         return 0;
        }
            try { // open a URL connection to the Servlet
             FileInputStream fileInputStream = new FileInputStream(sourceFile);
             URL url = new URL(upLoadServerUri);
             conn = (HttpURLConnection) url.openConnection(); // Open a HTTP  connection to  the URL
             conn.setDoInput(true); // Allow Inputs
             conn.setDoOutput(true); // Allow Outputs
             conn.setUseCaches(false); // Don't use a Cached Copy
             conn.setRequestMethod("POST");
             conn.setRequestProperty("Connection", "Keep-Alive");
             conn.setRequestProperty("ENCTYPE", "multipart/form-data");
             conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
             conn.setRequestProperty("uploaded_file", fileName); 
             dos = new DataOutputStream(conn.getOutputStream());
   
             dos.writeBytes(twoHyphens + boundary + lineEnd); 
             dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
             dos.writeBytes(lineEnd);
   
             bytesAvailable = fileInputStream.available(); // create a buffer of  maximum size
   
             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();
              
             Log.i("uploadFile", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
             if(serverResponseCode == 200){
               Log.i("uploadFile", "Upload success");
             }    
             
             //close the streams //
             fileInputStream.close();
             dos.flush();
             dos.close();
              
        } catch (MalformedURLException ex) {  
            //dialog.dismiss();  
            ex.printStackTrace();
            //Toast.makeText(UploadImageDemo.this, "MalformedURLException", Toast.LENGTH_SHORT).show();
            Log.e("Upload file to server", "error: " + ex.getMessage(), ex);  
        } catch (Exception e) {
            //dialog.dismiss();  
            e.printStackTrace();
            //Toast.makeText(UploadImageDemo.this, "Exception : " + e.getMessage(), Toast.LENGTH_SHORT).show();
            Log.e("Upload file to server Exception", "Exception : " + e.getMessage(), e);  
        }
        //dialog.dismiss();       
        return serverResponseCode;  
       } 

  @Override
  public void run() {
    // TODO Auto-generated method stub
    
  }

}

Java Source Code List

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