JAVA压缩文件夹，批量压缩文件（夹）

package com.app.common.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;

public class ZipUtil {
private static ZipUtil instance = new ZipUtil();
private static final int BUFFEREDSIZE = 1024;
private static Log log = LogFactory.getLog(ZipUtil.class);

private ZipUtil() {
}

public static ZipUtil getInstance() {
return instance;
}

public static void zip(String inputFilename, String zipFilename)
throws IOException {
zip(new File(inputFilename), zipFilename);
}

public static void zip(File inputFile, String zipFilename)
throws IOException {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
zipFilename));
out.setEncoding("GBK");

try {
if (log.isDebugEnabled()) {
log.debug("压缩开始：待压缩文件(夹)为 " + inputFile);
}
zip(inputFile, out, "");
} catch (IOException e) {
log.error("压缩失败");
} finally {
out.close();
if (log.isDebugEnabled()) {
log.debug("压缩成功");
}
}
}

private static void zip(File inputFile, ZipOutputStream out, String base)
throws IOException {
if (inputFile.isDirectory()) {
if (inputFile.listFiles().length == 0) {
ZipEntry zipEntry = new ZipEntry(base + inputFile.getName()
+ "/");
out.putNextEntry(zipEntry);
out.closeEntry();
} else {
base += inputFile.getName() + inputFile.separator;
for (File f : inputFile.listFiles()) {
zip(f, out, base);
}
}
} else {
ZipEntry zipEntry = new ZipEntry(base + inputFile.getName());
out.putNextEntry(zipEntry);
FileInputStream in = new FileInputStream(inputFile);
try {
int c;
byte[] by = new byte[BUFFEREDSIZE];
while ((c = in.read(by)) != -1) {
out.write(by, 0, c);
}
} catch (IOException e) {
throw e;
} finally {
in.close();
}
}
}

public static void multiZip(String[] inputFilelist, String zipFilename)
throws IOException {
File[] files = new File[inputFilelist.length];
for (int i = 0; i < inputFilelist.length; i++) {
files[i] = new File(inputFilelist[i]);
}

multiZip(files, zipFilename);
}

public static void multiZip(File[] files, String zipFilename)
throws IOException {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
zipFilename));
out.setEncoding("GBK");

try {
if (log.isDebugEnabled()) {
log.debug("压缩开始：待压缩文件(夹)共 " + files.length + "个");
}

for (File f : files) {
zip(f, out, "");
}
} catch (Exception e) {
log.error("压缩失败");
} finally {
out.close();
if (log.isDebugEnabled()) {
log.debug("压缩成功");
}
}
}
}