Java tutorial
/** * Tencent is pleased to support the open source community by making MSEC available. * * Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved. * * Licensed under the GNU General Public 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 * * https://opensource.org/licenses/GPL-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 msec.org; import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream; import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream; import java.io.FileInputStream; import java.io.FileOutputStream; /** * Created by Administrator on 2016/4/7. */ public class GzipUtil { static public void zip(String srcFile) throws Exception { GzipCompressorOutputStream out = new GzipCompressorOutputStream(new FileOutputStream(srcFile + ".gz")); FileInputStream in = new FileInputStream(srcFile); byte[] buf = new byte[10240]; while (true) { int len = in.read(buf); if (len <= 0) { break; } out.write(buf, 0, len); } out.flush(); out.close(); in.close(); } static public void zip(String srcFile, String destFile) throws Exception { GzipCompressorOutputStream out = new GzipCompressorOutputStream(new FileOutputStream(destFile)); FileInputStream in = new FileInputStream(srcFile); byte[] buf = new byte[10240]; while (true) { int len = in.read(buf); if (len <= 0) { break; } out.write(buf, 0, len); } out.flush(); out.close(); in.close(); } static public void unzip(String srcFile) throws Exception { GzipCompressorInputStream in = new GzipCompressorInputStream(new FileInputStream(srcFile)); int index = srcFile.indexOf(".gz"); String destFile = ""; if (index == srcFile.length() - 3) { destFile = srcFile.substring(0, index); } else { destFile = srcFile + ".decompress"; } FileOutputStream out = new FileOutputStream(destFile); byte[] buf = new byte[10240]; while (true) { int len = in.read(buf); if (len <= 0) { break; } out.write(buf, 0, len); } out.flush(); out.close(); in.close(); } }