Here you can find the source of getStreamAsByteArray(InputStream input)
private static byte[] getStreamAsByteArray(InputStream input) throws IOException
//package com.java2s; /*/*from w w w. j av a 2 s . com*/ * Copyright (C) 2014 ???????Invisible God? <373575012@qq.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * ????????????? */ import java.io.BufferedInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; public class Main { private static byte[] getStreamAsByteArray(InputStream input) throws IOException { ByteArrayOutputStream bos = null; BufferedInputStream bis = null; byte[] buffer = null; try { bos = new ByteArrayOutputStream(); bis = new BufferedInputStream(input); buffer = new byte[1024]; int length = -1; while ((length = bis.read(buffer)) != -1) { bos.write(buffer, 0, length); bos.flush(); } return bos.toByteArray(); } finally { if (bos != null) { bos.close(); bos = null; } if (bis != null) { bis.close(); bis = null; } buffer = null; } } }