java 对文件夹或者文件的压缩和解压缩的事例
事例用的是org.apache.tools.zip包下面的一些类，jdk自带的zip工具类当文件名是中文的情况下会出现问题，本事例可以递归压缩文件和解压文件，功能上和现在常用的一些压缩软件功能类似，暂时没有做性能上的对比。
package zip;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.Enumeration;import org.apache.tools.zip.ZipEntry;import org.apache.tools.zip.ZipFile;import org.apache.tools.zip.ZipOutputStream;@SuppressWarnings("rawtypes")public class TestAntZip {public static void main(String[] args) { //Unzip();//ZipFile();}/** * 压缩文件或者文件夹 */private static void ZipFile() {try {String inputStr = "D:/testzip";File input = new File(inputStr); String singleFile = null;if (input.isFile()) { int temp = input.getName().lastIndexOf("."); singleFile = input.getName().substring(0, temp);}String basepath = input.getName(); String zipfilename = singlefile != null ? singlefile : input.getName();ZipOutputStream zos = new ZipOutputStream(new File(input.getParent(), zipfilename + ".zip"));zos.setEncoding("UTF-8");PutEntry(zos, input, basepath);zos.close();} catch (Exception e) {e.printStackTrace();}}private static void PutEntry(ZipOutputStream zos, File file, String basepath) throws IOException, FileNotFoundException {FileInputStream is = null;byte[] b = new byte[1024 * 10];int tmp = 0;basepath += File.separator;if (file.isFile()) {zos.putNextEntry(new ZipEntry(basepath));is = new FileInputStream(file);while ((tmp = is.read(b, 0, b.length)) != -1) {zos.write(b, 0, tmp);}is.close();} else {for (File f : file.listFiles()) {PutEntry(zos, f, basepath + f.getName());}}zos.flush();}/** * 解压缩 */private static void Unzip() {String file = "d:/testzip.zip";File zipFile = new File(file);int i = file.lastIndexOf("."); File filePath = new File(file.substring(0, i)); if (!filePath.exists()) { filePath.mkdirs(); } File temp = null; try { ZipFile zip = new ZipFile(zipFile, "UTF-8"); ZipEntry entry = null; byte[] b = new byte[1024 * 10]; int tmp = 0; FileOutputStream os = null; InputStream is = null; for (Enumeration enu = zip.getEntries(); enu.hasMoreElements();) { entry = (ZipEntry) enu.nextElement(); is = zip.getInputStream(entry); temp = new File(filePath.getParent() + File.separator + entry.getName()); if (!temp.getParentFile().exists()) { temp.getParentFile().mkdirs(); } os = new FileOutputStream(temp); while ((tmp = is.read(b, 0, b.length)) != -1) { os.write(b, 0, tmp); } os.flush(); os.close(); is.close(); } } catch (Exception e) { e.printStackTrace(); }}}