javazip压缩与解压-支持空目录，保留文件修改时间。
依赖于commons-io,commons-compress
[Java]代码
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
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.io.OutputStream;
import press.archivers.zip.ZipArchiveEntry;
import press.archivers.zip.ZipArchiveInputStream;
import press.archivers.zip.ZipArchiveOutputStream;
import mons.io.IOUtils;
public class ZipFileUtil {
/**
* 把一个目录打包到一个指定的zip文件中
*
* @param dirpath
* 目录路径
* @param zipPath
* zip文件路径
*/
public static void compressFoldToZip(String dirpath, String zipPath) {
compressFoldToZip(dirpath,zipPath,"");
}
/**
* 把一个目录打包到一个指定的zip文件中
* @param dirpath
* @param zipPath
* @param entryPath 压缩内文件逻辑路径。如static/
*/
public static void compressFoldToZip(String dirpath, String zipPath,String entryPath){
if(!entryPath.endsWith(File.separator)&&StringUtil.checkNotEmpty(entryPath)){
entryPath+=File.separator;
}
ZipArchiveOutputStream out = null;
try {
out = new ZipArchiveOutputStream(new BufferedOutputStream(new FileOutputStream(new File(zipPath))));
out.setEncoding("UTF-8");
compressFoldToZip(out, dirpath, entryPath);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
IOUtils.closeQuietly(out);
}
}
/**
* 把一个目录打包到一个指定的zip文件中
*
* @param out
* @param dirpath
* 目录路径
* @param entryPath
* zip中文件的逻辑路径
*/
private static void compressFoldToZip(ZipArchiveOutputStream out, String dirpath, String entryPath) {
InputStream ins = null;
File dir = new File(dirpath);
File[] files = dir.listFiles();
if (files == null || files.length < 1) {
return;
}
try {
for (int i = 0; i < files.length; i++) {
// 判断此文件是否是一个文件夹
if (files[i].isDirectory()) {
if(files[i].listFiles().length>0){
compressFoldToZip(out, files[i].getAbsolutePath(), entryPath + files[i].getName() + File.separator);
}else{
addFileToZip(files[i], out, entryPath);
}
} else {
addFileToZip(files[i], out, entryPath);
}
}
out.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
IOUtils.closeQuietly(ins);
}
}
private static void addFileToZip(File file, ZipArchiveOutputStream out, String entryPath) {
InputStream ins = null;
try {
String path=entryPath + file.getName();
if(file.isDirectory()){
path=formatDirPath(path); //为了在压缩文件中包含空文件夹
}
ZipArchiveEntry entry = new ZipArchiveEntry(path);
entry.setTime(file.lastModified());
// entry.setSize(files[i].length());
out.putArchiveEntry(entry);
if(!file.isDirectory()){
ins = new BufferedInputStream(new FileInputStream(file.getAbsolutePath()));
IOUtils.copy(ins, out);
}
out.closeArchiveEntry();
} catch (IOException e) {
e.printStackTrace();
} finally {
IOUtils.closeQuietly(ins);
}
}
/**
* 解压zip文件到指定目录
*
* @param zipPath
* @param destDir
*/
public static void unZipToFold(String zipPath, String destDir) {
ZipArchiveInputStream ins = null;
OutputStream os = null;
File zip = new File(zipPath);
if (!zip.exists()) {
return;
}
File dest = new File(destDir);
if (!dest.exists()) {
dest.mkdirs();
}
destDir=formatDirPath(destDir);
try {
ins = new ZipArchiveInputStream(new BufferedInputStream(new FileInputStream(zipPath)), "UTF-8");
ZipArchiveEntry entry = null;
while ((entry = ins.getNextZipEntry()) != null) {
if (entry.isDirectory()) {
File directory = new File(destDir, entry.getName());
directory.mkdirs();
directory.setLastModified(entry.getTime());
} else {
String absPath=formatPath(destDir+entry.getName());
mkdirsForFile(absPath);
File tmpFile=new File(absPath);
os=new BufferedOutputStream(new FileOutputStream(tmpFile));
IOUtils.copy(ins, os);
IOUtils.closeQuietly(os);
tmpFile.setLastModified(entry.getTime());
}
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
IOUtils.closeQuietly(ins);
}
}
private static String formatPath(String path){
path=path.replace('\\', File.separatorChar);
path=path.replace('/', File.separatorChar);
return path;
}
private static String formatDirPath(String dir){
if(!dir.endsWith(File.separator)){
dir+=File.separator;
}
return dir;
}
private static void mkdirsForFile(String filePath){
String absPath=filePath;
String tmpPath=absPath.substring(0,absPath.lastIndexOf(File.separator));
File tmp=new File(tmpPath);
if(!tmp.exists()){
tmp.mkdirs();
}
}
public static void main(String[] args) {
compressFoldToZip("D:\\new2\\feiq", "D:\\zip\\my.zip");
//unZipToFold("D:\\zip\\my.zip", "D:\\zip\\unzip");
}
}
