Example usage for java.net UnknownServiceException printStackTrace

Introduction

In this page you can find the example usage for java.net UnknownServiceException printStackTrace.

Prototype

public void printStackTrace() 

Source Link

Document

Prints this throwable and its backtrace to the standard error stream.

Usage

From source file:com.protheos.graphstream.JSONSender.java

/**
 * Send JSONObject message to Gephi server
 * //from   www.j a  v a  2s.  com
 * @param obj
 *            , the JSON message content
 * @param operation
 *            , the operation sending to the server, like "updateGraph",
 *            "getGraph"
 */
private void doSend(JSONObject obj, String operation) {

    try {
        URL url = new URL("http", host, port, "/" + workspace + "?operation=" + operation + "&format=JSON");

        URLConnection connection = url.openConnection();

        connection.setDoOutput(true);
        connection.connect();

        OutputStream outputStream = null;
        PrintStream out = null;
        try {
            outputStream = connection.getOutputStream();
            out = new PrintStream(outputStream, true);

            out.print(obj.toString() + EOL);
            out.flush();
            out.close();

            // send event message to the server and read the result from the
            // server
            InputStream inputStream = connection.getInputStream();
            BufferedReader bf = new BufferedReader(new InputStreamReader(inputStream));
            String line;
            while ((line = bf.readLine()) != null) {
                // if (debug) debug(line);
            }
            inputStream.close();
        } catch (UnknownServiceException e) {
            // protocol doesn't support output
            e.printStackTrace();
            return;
        }
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

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