Java URL Connection getURLContents(URL u, Map data)

Description

get URL Contents

License

Open Source License

Declaration

public static String getURLContents(URL u, Map<String, String> data) throws IOException 

Method Source Code

//package com.java2s;
/*/*from w ww .  j  a v a2 s .c  o  m*/
 * Copyright 2012 University of Helsinki.
 *
 * This file is part of BMVis?.
 *
 * BMVis? is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * BMVis? 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with BMVis?.  If not, see
 * <http://www.gnu.org/licenses/>.
 */

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.Collections;
import java.util.Map;
import java.util.Map.Entry;

public class Main {
    public static String getURLContents(URL u, Map<String, String> data) throws IOException {

        URLConnection conn = u.openConnection();
        conn.setDoOutput(true);
        OutputStreamWriter postWriter = new OutputStreamWriter(conn.getOutputStream());

        boolean first = true;

        for (Entry<String, String> ent : data.entrySet()) {
            if (!first)
                postWriter.write("&");
            String set = URLEncoder.encode(ent.getKey(), "UTF-8") + "="
                    + URLEncoder.encode(ent.getValue(), "UTF-8");
            postWriter.write(set);
            System.out.println(set);
            first = false;
        }
        postWriter.flush();

        conn.setReadTimeout(10000);
        InputStream istream = conn.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(istream));
        String line;
        StringBuffer ret = new StringBuffer();

        System.out.println("startRead");
        while ((line = reader.readLine()) != null) {
            ret.append(line);
        }
        System.out.println("endRead");

        return ret.toString();
    }

    public static String getURLContents(URL queryUrl) throws IOException {
        return getURLContents(queryUrl, Collections.EMPTY_MAP);
    }
}

Related

1. getType(URLConnection connection)
2. getUrl(String serverName, String docid, String pageid)
3. getURL(String url)
4. getUrlAsProperties(String urlString)
5. getUrlContent(String urlAddress)
6. getURLContentsAsString(URL url)
7. getURLDataList(URL StrurlStringing)
8. getUrlEncoding(URLConnection connection)
9. getURLForward(URL url)