execute URL Post - Java Network

Java examples for Network:URL

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Description

execute URL Post

Demo Code

/*//from w  w w .  ja v a2  s  .  c o m
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 */
//package com.java2s;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;

public class Main {
    public static byte[] executePost(String url, byte[] data,
            Map<String, String> requestProperties) throws IOException {
        HttpURLConnection urlConnection = null;
        try {
            urlConnection = (HttpURLConnection) new URL(url)
                    .openConnection();
            urlConnection.setRequestMethod("POST");
            urlConnection.setDoOutput(data != null);
            urlConnection.setDoInput(true);
            if (requestProperties != null) {
                for (Map.Entry<String, String> requestProperty : requestProperties
                        .entrySet()) {
                    urlConnection.setRequestProperty(
                            requestProperty.getKey(),
                            requestProperty.getValue());
                }
            }
            if (data != null) {
                OutputStream out = new BufferedOutputStream(
                        urlConnection.getOutputStream());
                out.write(data);
                out.close();
            }
            InputStream in = new BufferedInputStream(
                    urlConnection.getInputStream());
            return convertInputStreamToByteArray(in);
        } finally {
            if (urlConnection != null) {
                urlConnection.disconnect();
            }
        }
    }

    private static byte[] convertInputStreamToByteArray(
            InputStream inputStream) throws IOException {
        byte[] bytes = null;
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        byte data[] = new byte[1024];
        int count;
        while ((count = inputStream.read(data)) != -1) {
            bos.write(data, 0, count);
        }
        bos.flush();
        bos.close();
        inputStream.close();
        bytes = bos.toByteArray();
        return bytes;
    }
}

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