Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * 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.
 */

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 {
    /**
     * Executes a post request using {@link HttpURLConnection}.
     *
     * @param url The request URL.
     * @param data The request body, or null.
     * @param requestProperties Request properties, or null.
     * @return The response body.
     * @throws IOException If an error occurred making the request.
     */
    // TODO: Remove this and use HttpDataSource once DataSpec supports inclusion of a POST body.
    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());
                }
            }
            // Write the request body, if there is one.
            if (data != null) {
                OutputStream out = urlConnection.getOutputStream();
                try {
                    out.write(data);
                } finally {
                    out.close();
                }
            }
            // Read and return the response body.
            InputStream inputStream = urlConnection.getInputStream();
            try {
                return toByteArray(inputStream);
            } finally {
                inputStream.close();
            }
        } finally {
            if (urlConnection != null) {
                urlConnection.disconnect();
            }
        }
    }

    /**
     * Converts the entirety of an {@link InputStream} to a byte array.
     *
     * @param inputStream the {@link InputStream} to be read. The input stream is not closed by this
     *    method.
     * @return a byte array containing all of the inputStream's bytes.
     * @throws IOException if an error occurs reading from the stream.
     */
    public static byte[] toByteArray(InputStream inputStream) throws IOException {
        byte[] buffer = new byte[1024 * 4];
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        int bytesRead;
        while ((bytesRead = inputStream.read(buffer)) != -1) {
            outputStream.write(buffer, 0, bytesRead);
        }
        return outputStream.toByteArray();
    }
}