Java example source code file (PostOnDelete.java)

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Java - Java tags/keywords

delete, emptypathhandler, headers, hello, httphandler, httpserver, inetsocketaddress, ioexception, net, network, outputstream, postondelete, runtimeexception, server, string, url

The PostOnDelete.java Java example source code

/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import com.sun.net.httpserver.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.*;

/*
 * @test
 * @bug 7157360
 * @summary HttpURLConnection: HTTP method DELETE doesn't support output
 */
public class PostOnDelete {

    /* string to send */
    private static String msg = "Hello Server";
    /* length of the string to verify */
    private int len = msg.length();

    public static void main(String[] args) throws Exception {
        new PostOnDelete().runTest();
    }

    public void runTest() throws Exception {
        Server s = null;
        try {
            s = new Server();
            s.startServer();
            URL url = new URL("http://localhost:" + s.getPort());
            HttpURLConnection urlConnection = (HttpURLConnection)url.openConnection();
            urlConnection.setRequestMethod("DELETE");
            urlConnection.setDoOutput(true);
            OutputStream os = urlConnection.getOutputStream();
            os.write(msg.getBytes());
            os.close();
            int code = urlConnection.getResponseCode();

            if (code != 200) {
                throw new RuntimeException("Request entity for DELETE failed!");
            }
        } finally {
            s.stopServer();
        }
    }

    class Server {
        HttpServer server;

        public void startServer() {
            InetSocketAddress addr = new InetSocketAddress(0);
            try {
                server = HttpServer.create(addr, 0);
            } catch (IOException ioe) {
                throw new RuntimeException("Server could not be created");
            }

            server.createContext("/", new EmptyPathHandler());
            server.start();
        }

        public int getPort() {
            return server.getAddress().getPort();
        }

        public void stopServer() {
            server.stop(0);
        }
    }

    class EmptyPathHandler implements HttpHandler {

        @Override
        public void handle(HttpExchange exchange) throws IOException {
            String requestMethod = exchange.getRequestMethod();

            if (requestMethod.equalsIgnoreCase("DELETE")) {
                InputStream is = exchange.getRequestBody();

                int count = 0;
                while (is.read() != -1) {
                    count++;
                }
                is.close();

                Headers responseHeaders = exchange.getResponseHeaders();
                responseHeaders.set("Content-Type", "text/plain");
                exchange.sendResponseHeaders((count == len) ? 200 : 400, 0);
                OutputStream os = exchange.getResponseBody();
                String str = "Hello from server!";
                os.write(str.getBytes());
                os.flush();
                os.close();
            }
        }
    }
}