Sending a POST Request Using a URL : URLConnection « Network « Java Tutorial

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Java Tutorial » Network » URLConnection 
19.3.7.Sending a POST Request Using a URL
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;

public class Main {
  public static void main(String[] argvthrows Exception {
    String data = URLEncoder.encode("key1""UTF-8""=" + URLEncoder.encode("value1""UTF-8");
    data += "&" + URLEncoder.encode("key2""UTF-8""=" + URLEncoder.encode("value2""UTF-8");

    URL url = new URL("http://server.com:80/cgi");
    URLConnection conn = url.openConnection();
    conn.setDoOutput(true);
    OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
    wr.write(data);
    wr.flush();

    BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
    String line;
    while ((line = rd.readLine()) != null) {
      System.out.println(line);
    }
    wr.close();
    rd.close();
  }
}
19.3.URLConnection
19.3.1.All Headers
19.3.2.Chain the InputStream to a Reader
19.3.3.Get files updated last 24 hours
19.3.4.Encoding Aware Source Viewer
19.3.5.Call a servlet from a Java command line application
19.3.6.Read from a URL with buffered stream
19.3.7.Sending a POST Request Using a URL
19.3.8.Read a GIF or CLASS from an URL and save it locally
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