Passing parameters to url using java.net package

[kranthi chamarthi]

Hi,
I have two applications deployed on my server and i need to invoke a register.do class in one application from another application and need to send parameters like username,password,fullname,email,locale,country using post method. I know that using the URL class i can open the connection and open the required url....but how can i pass the parameters to it using post method??? Please advice me.
Thanks
Kranthi

[Ulf Dittmer]

Check out example e135 at http://www.exampledepot.com/egs/java.net/pkg.html It shows how to use POST programmatically in Java code, including how to send parameters.

[kranthi chamarthi]

Thanks for that link . But still my code is nto working. Following is my code.

String data = URLEncoder.encode("number1", "UTF-8") + "=" + URLEncoder.encode("10", "UTF-8");
        data += "&" + URLEncoder.encode("number2", "UTF-8") + "=" + URLEncoder.encode("11", "UTF-8");
    
        // Send data
        URL url=new URL("http://localhost:8080/StrutsDispatchAction/arithmeticAction.do?method=multiply_method");
URLConnection conn = url.openConnection();
        conn.setDoOutput(true);
        OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
        wr.write(data);
        wr.flush();

I have kept a print statement in multiply_method() of the action class to which arithmeticAction.do points and it is not getting printed.

[kranthi chamarthi]

I included the code for obtaining the input stream and reading the data from the url and then the program started working. Why is this???Following is the code

try
{
String data = URLEncoder.encode("number1", "UTF-8") + "=" + URLEncoder.encode("10", "UTF-8");
        data += "&" + URLEncoder.encode("number2", "UTF-8") + "=" + URLEncoder.encode("11", "UTF-8");
    
        // Send data
        URL url=new URL("http://localhost:8080/StrutsDispatchAction/arithmeticAction.do?method=multiply_method");
URLConnection conn = url.openConnection();
//conn.connect();
[I]BufferedReader in = new BufferedReader(
                                new InputStreamReader(
                                conn.getInputStream()));[/I]
    
        in.close();
 
       
        }
catch(Exception e)
{
e.printStackTrace();
}

This code is working only if the code that is italicized is present.

[ November 10, 2008: Message edited by: kranthi kumar.chamarthi ]
[ November 10, 2008: Message edited by: kranthi kumar.chamarthi ]

[Joe Ess]

The HTTP protocol has two parts: a request and a response. If you don't try to read the response, the server may think you've dropped the connection and stop processing the request.