JAVA – How To Post To A HTML/PHP Post Form

This example shows how to build up a string to post to a web form, and return the results generated.

Element1 is the first variable the the post accepts – “Value 1″ is the literal string bieng passed to it.
Element2 is the second variable that the post accepts – “Value 2″ is the literal string bieng passed to it.
Element3 is the third variable that the post accepts – “Value 2″ is the literal string bieng passed to it.

http://www.examplewebsite.asp is the web page that the data is bieng posted to.

 

//Create Post String
String data = URLEncoder.encode(“Element1″, “UTF-8″) + “=” + URLEncoder.encode(“Value 1″, “UTF-8″);
data += “&” + URLEncoder.encode(“Element2″, “UTF-8″) + “=” + URLEncoder.encode(“Value 2″, “UTF-8″);
data += “&” + URLEncoder.encode(“Element3″, “UTF-8″) + “=” + URLEncoder.encode(“Value 3″, “UTF-8″);
                
         
// Send Data To Page
URL url = new URL(“http://www.examplewebsite.asp”);
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
wr.flush();
   
// Get The Response
BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line;
while ((line = rd.readLine()) != null) {
        System.out.println(line);
        //you Can Break The String Down Here
}

 

You can manipulate the line variable to read in the information returned from the post.