Java HTTP Read getContent(final HttpURLConnection con)

Description

get Content

License

Open Source License

Declaration

private static byte[] getContent(final HttpURLConnection con) throws IOException 

Method Source Code

//package com.java2s;
/*//  ww w  . j a v a 2s.  c o  m
 * The MIT License
 *
 * Copyright (c) 2013-2014, CloudBees, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import java.net.HttpURLConnection;

public class Main {
    private static byte[] getContent(final HttpURLConnection con) throws IOException {
        try {
            InputStream inputStream = con.getInputStream();

            if (inputStream != null) {
                try {
                    return readStream(inputStream);
                } finally {
                    inputStream.close();
                }
            }
        } catch (IOException e) {
            // No content...
        }

        return null;
    }

    public static byte[] readStream(InputStream stream) throws IOException {
        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
        byte[] byteBuf = new byte[1024];
        int readCount = 0;

        while ((readCount = stream.read(byteBuf)) != -1) {
            bytesOut.write(byteBuf, 0, readCount);
        }

        return bytesOut.toByteArray();
    }
}

Related

1. getByteaArrayFromConn(HttpURLConnection conn, boolean isSuccess)
2. getContent(final String urlString)
3. getContent(String urlStr)
4. getContentAsString(URL url)
5. getContentEncoding(URL url)