java Gzip方式 解压，压缩文件Utils

废话不多说，直接上代码，就是这么简单粗暴

import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;import java.util.ArrayList;import java.util.List;import java.util.zip.GZIPInputStream;import java.util.zip.GZIPOutputStream;/** * GZIP工具 * * @author * */public abstract class GZipUtils {public static final int BUFFER = 1024;public static final String EXT = ".gz";/** * 数据压缩 * * @param data * @return * @throws Exception */public static byte[] compress(byte[] data) throws Exception {ByteArrayInputStream bais = new ByteArrayInputStream(data);ByteArrayOutputStream baos = new ByteArrayOutputStream();// 压缩compress(bais, baos);byte[] output = baos.toByteArray();baos.flush();baos.close();bais.close();return output;}/** * 文件压缩 * * @param file * @throws Exception */public static void compress(File file) throws Exception {compress(file, true);}/** * 文件压缩 * * @param file * @param delete * 是否删除原始文件 * @throws Exception */public static void compress(File file, boolean delete) throws Exception {FileInputStream fis = new FileInputStream(file);FileOutputStream fos = new FileOutputStream(file.getPath() + EXT);compress(fis, fos);fis.close();fos.flush();fos.close();if (delete) {file.delete();}}/** * 数据压缩 * * @param is * @param os * @throws Exception */public static void compress(InputStream is, OutputStream os)throws Exception {GZIPOutputStream gos = new GZIPOutputStream(os);int count;byte data[] = new byte[BUFFER];while ((count = is.read(data, 0, BUFFER)) != -1) {gos.write(data, 0, count);}gos.finish();gos.flush();gos.close();}/** * 文件压缩 * * @param path * @throws Exception */public static void compress(String path) throws Exception {compress(path, true);}/** * 文件压缩 * * @param path * @param delete * 是否删除原始文件 * @throws Exception */public static void compress(String path, boolean delete) throws Exception {File file = new File(path);compress(file, delete);}/** * 文件压缩 * * @param path * @param delete * 是否删除原始文件 * @throws Exception */public static void compress(String inputFileName, String outputFileName)throws Exception {FileInputStream inputFile = new FileInputStream(inputFileName);FileOutputStream outputFile = new FileOutputStream(outputFileName);compress(inputFile, outputFile);inputFile.close();outputFile.flush();outputFile.close();}/** * 数据解压缩 * * @param data * @return * @throws Exception */public static byte[] decompress(byte[] data) throws Exception {ByteArrayInputStream bais = new ByteArrayInputStream(data);ByteArrayOutputStream baos = new ByteArrayOutputStream();// 解压缩decompress(bais, baos);data = baos.toByteArray();baos.flush();baos.close();bais.close();return data;}/** * 文件解压缩 * * @param file * @throws Exception */public static void decompress(File file) throws Exception {decompress(file, true, null);}/** * 文件解压缩 * * @param file * 需要解压的文件 * @param delete * 是否删除原始文件 * @param outPath * 解压文件的输出路径 * @throws Exception */public static void decompress(File file, boolean delete, String outPath)throws Exception {FileInputStream fis = new FileInputStream(file);FileOutputStream fos = null;if (outPath == null || outPath=="") {fos = new FileOutputStream(file.getPath().replace(EXT, ""));} else {File files = new File(outPath);//判断文件是否存在，不存在，则创建FileUtil.mkDir(files);//此处调用了递归创建文件夹，没有写出，网上很多//文件输出流参数中，需要指定文件解压后的文件名，这里，用文件的原名称fos = new FileOutputStream(outPath + File.separator+ file.getName().replace(EXT, ""));}decompress(fis, fos);fis.close();fos.flush();fos.close();if (delete) {file.delete();}}/** * 文件解压缩 * * @param file * @param delete * 是否删除原始文件 * @throws Exception */public static void decompress(String inputFileName, String outputFileName)throws Exception {FileInputStream inputFile = new FileInputStream(inputFileName);FileOutputStream outputFile = new FileOutputStream(outputFileName);decompress(inputFile, outputFile);inputFile.close();outputFile.flush();outputFile.close();}/** * 数据解压缩 * * @param is * @param os * @throws Exception */public static void decompress(InputStream is, OutputStream os)throws Exception {GZIPInputStream gis = new GZIPInputStream(is);//GZIPInputStream gis = new GZIPInputStream(new BufferedInputStream(is));int count;byte data[] = new byte[BUFFER];while ((count = gis.read(data, 0, BUFFER)) != -1) {os.write(data, 0, count);}gis.close();}/** * 文件解压缩 * * @param path * @throws Exception */public static void decompress(String path) throws Exception {decompress(path, true, null);}/** * 文件解压缩(解压单个文件) * * @param path * 需要解压的文件路径（包含文件名称） * @param delete * 是否删除原始文件（true：删除；false：保留） * @param outPath * 解压后文件的输出路径，如果该参数的值为 null，则输出解压文件到当前文件夹 * @throws Exception */public static void decompress(String path, boolean delete, String outPath)throws Exception {File file = new File(path);decompress(file, delete, outPath);}//测试，通过遍历，解压一个文件夹中的所有文件public static void main(String[] args) throws Exception {long startTime = System.currentTimeMillis();// 记录开始时间String path = "E:\\compreFile\\20160831\\pT\\20160831";File file = new File(path);String files[] = file.list();System.out.println("****共 " + files.length + " 个文件****");Thread.sleep(2000);int num = 0;List list=new ArrayList();for (int x = 0; x < files.length; x++) {try {//调用解压方法decompress(path + "\\" + files[x], false,"F:\\compreFile\\test2");} catch (Exception e) {list.add(files[x]);continue;}++num;System.out.println("第 " + num + " 个文件解压成功！！");}/*for(int x=0;x<list.size();x++){System.out.println(list.get(x).toString());}*/System.out.println("问题文件 " + list.size() + " 个 ");//decompress("E:\\compreFile\\20160730\\page_zip\\188999100.zip","E:\\compreFile\\a"); long endTime = System.currentTimeMillis();// 记录结束时间float excTime = (float) (endTime - startTime) / 1000;System.out.println("执行时间：" + excTime + "s");System.out.println("*****完成！！*****");}}