Java URL Value Check invokePostUrl(String url, String encodedQueryString)

Description

invoke Post Url

License

Open Source License

Declaration

public static String invokePostUrl(String url, String encodedQueryString) throws Exception 

Method Source Code

//package com.java2s;
/*//from   w w  w  . ja v  a  2 s.c  o  m
 * Licensed to csti consulting 
 * You may obtain a copy of the License at
 *
 * http://www.csticonsulting.com
 * Copyright (c) 2006-Aug 24, 2010 Consultation CS-TI inc. 
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.InputStreamReader;

import java.net.HttpURLConnection;
import java.net.URL;

public class Main {
    public static String invokePostUrl(String url, String encodedQueryString) throws Exception {

        String agent = "Mozilla/4.0";

        HttpURLConnection conn = null;
        DataOutputStream output = null;
        DataInputStream in = null;
        BufferedReader is = null;
        try {
            URL postURL = new URL(url);
            conn = (HttpURLConnection) postURL.openConnection();

            // Set connection parameters. We need to perform input and output,
            // so set both as true.
            conn.setDoInput(true);
            conn.setDoOutput(true);

            // Set the content type we are POSTing. We impersonate it as
            // encoded form data
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.setRequestProperty("User-Agent", agent);

            conn.setRequestProperty("Content-Length", String.valueOf(encodedQueryString.length()));
            conn.setRequestMethod("POST");

            // get the output stream to POST to.
            output = new DataOutputStream(conn.getOutputStream());
            output.writeBytes(encodedQueryString);
            output.flush();

            StringBuffer responseText = new StringBuffer();
            in = new DataInputStream(conn.getInputStream());
            int rc = conn.getResponseCode();
            if (rc != -1) {
                is = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                String _line = null;
                while (((_line = is.readLine()) != null)) {
                    responseText.append(_line);
                }

            }

            return responseText.toString();

        } finally {

            if (is != null) {
                try {
                    is.close();
                } catch (Exception ignore) {
                    // TODO: handle exception
                }
            }

            if (in != null) {
                try {
                    in.close();
                } catch (Exception ignore) {
                    // TODO: handle exception
                }
            }

            if (output != null) {
                try {
                    output.close();
                } catch (Exception ignore) {
                    // TODO: handle exception
                }
            }

            if (conn != null) {
                try {
                    conn.disconnect();
                } catch (Exception ignore) {
                    // TODO: handle exception
                }
            }

        }

    }
}

Related

1. checkUrl(URL url, URL baseUrl)
2. checkURLAvailable(String targetUrl)
3. checkUrlImage(final String url)
4. checkURLStatus(String pURL)
5. checkURLValidProtocol(URL url)
6. invokeUrl(String url)
7. is200(final String url)
8. is404(URL url)
9. isAddressReachable(String url, int timeout)