how to upload a file over internet
Hi Friends,
I am having trouble uploading file on the server. I have a file on my local computer say C:/media.wav and I would like to make a java program,so that if I pass the URL of some server,it should automatically copy that file to that location. We assume here all the permissions are set properly. For example,if somebody does this:
java ServletCom http://www.xyz.com/test/
The program should copy the "C:/media.wav" file under the "test"directory of the webserver. IS this possible to do?
I tried using the following code,and its reading the response back from the server but its not able to copy the file,can someone please help me...
import java.io.*;
import java.net.*;
publicclass ServletCom{
publicstaticvoid main(String[] args)
throws Exception
{
HttpURLConnection conn =null;
BufferedReader br =null;
DataOutputStream dos =null;
DataInputStream inStream =null;
InputStream is =null;
OutputStream os =null;
boolean ret =false;
String StrMessage ="";
//The file to copy
String exsistingFileName ="C:\\media.wav";
String lineEnd ="\r\n";
String twoHyphens ="--";
String boundary ="*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
String responseFromServer ="";
//The url to post the file to
String urlString = args[0];
try
{
// CLIENT REQUEST
FileInputStream fileInputStream =new FileInputStream(new
File(exsistingFileName) );
// open a URL connection to the Servlet
URL url =new URL(urlString);
// Open a HTTP connection to the URL
conn = (HttpURLConnection) url.openConnection();
// Allow Inputs
conn.setDoInput(true);
// Allow Outputs
conn.setDoOutput(true);
// Don't use a cached copy.
conn.setUseCaches(false);
// Use a post method.
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection","Keep-Alive");
// conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
conn.setRequestProperty("Content-Type","audio/wav");
dos =new DataOutputStream( conn.getOutputStream() );
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"upload\";"
+" filename=\"" + exsistingFileName +"\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer =newbyte[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);
// close streams
fileInputStream.close();
dos.flush();
dos.close();
}
catch (MalformedURLException ex)
{
System.out.println("From ServletCom CLIENT REQUEST:"+ex);
}
catch (IOException ioe)
{
System.out.println("From ServletCom CLIENT REQUEST:"+ioe);
}
// read the SERVER RESPONSE
try
{
inStream =new DataInputStream ( conn.getInputStream() );
String str;
while (( str = inStream.readLine()) !=null)
{
System.out.println("Server response is: "+str);
System.out.println("");
}
inStream.close();
}
catch (IOException ioex)
{
System.out.println("From (ServerResponse): "+ioex);
}
}
}
