java 压缩/解压 zip 多个文件和文件夹

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipUtil {

private static final int BUFFER_SIZE = 2 * 1024;

/**
* @param srcDir 压缩文件夹路径
* @param out 压缩文件输出流
* @param KeepDirStructure 是否保留原来的目录结构,
*          true:保留目录结构;
*          false:所有文件跑到压缩包根目录下(注意：不保留目录结构可能会出现同名文件,会压缩失败)
* @throws RuntimeException 压缩失败会抛出运行时异常
*/
public static void toZip(String[] srcDir, String outDir,
boolean KeepDirStructure) throws RuntimeException, Exception {

OutputStream out = new FileOutputStream(new File(outDir));

long start = System.currentTimeMillis();
ZipOutputStream zos = null;
try {
zos = new ZipOutputStream(out);
List<File> sourceFileList = new ArrayList<File>();
for (String dir : srcDir) {
File sourceFile = new File(dir);
sourceFileList.add(sourceFile);
}
compress(sourceFileList, zos, KeepDirStructure);
long<
4000
/span> end = System.currentTimeMillis();
System.out.println("压缩完成，耗时：" + (end - start) + " ms");
} catch (Exception e) {
throw new RuntimeException("zip error from ZipUtils", e);
} finally {
if (zos != null) {
try {
zos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

}

/**
* 递归压缩方法
* @param sourceFile 源文件
* @param zos zip输出流
* @param name 压缩后的名称
* @param KeepDirStructure 是否保留原来的目录结构,
*          true:保留目录结构;
*          false:所有文件跑到压缩包根目录下(注意：不保留目录结构可能会出现同名文件,会压缩失败)
* @throws Exception
*/
private static void compress(File sourceFile, ZipOutputStream zos,
String name, boolean KeepDirStructure) throws Exception {
byte[] buf = new byte[BUFFER_SIZE];
if (sourceFile.isFile()) {
zos.putNextEntry(new ZipEntry(name));
int len;
FileInputStream in = new FileInputStream(sourceFile);
while ((len = in.read(buf)) != -1) {
zos.write(buf, 0, len);
}
// Complete the entry
zos.closeEntry();
in.close();
} else {
File[] listFiles = sourceFile.listFiles();
if (listFiles == null || listFiles.length == 0) {
if (KeepDirStructure) {
zos.putNextEntry(new ZipEntry(name + "/"));
zos.closeEntry();
}

} else {
for (File file : listFiles) {
if (KeepDirStructure) {
compress(file, zos, name + "/" + file.getName(),
KeepDirStructure);
} else {
compress(file, zos, file.getName(), KeepDirStructure);
}

}
}
}
}

private static void compress(List<File> sourceFileList,
ZipOutputStream zos, boolean KeepDirStructure) throws Exception {
byte[] buf = new byte[BUFFER_SIZE];
for (File sourceFile : sourceFileList) {
String name = sourceFile.getName();
if (sourceFile.isFile()) {
zos.putNextEntry(new ZipEntry(name));
int len;
FileInputStream in = new FileInputStream(sourceFile);
while ((len = in.read(buf)) != -1) {
zos.write(buf, 0, len);
}
zos.closeEntry();
in.close();
} else {
File[] listFiles = sourceFile.listFiles();
if (listFiles == null || listFiles.length == 0) {
if (KeepDirStructure) {
zos.putNextEntry(new ZipEntry(name + "/"));
zos.closeEntry();
}

} else {
for (File file : listFiles) {
if (KeepDirStructure) {
compress(file, zos, name + "/" + file.getName(),
KeepDirStructure);
} else {
compress(file, zos, file.getName(),
KeepDirStructure);
}

}
}
}
}
}

public static void main(String[] args) throws Exception {

String[] srcDir = { "C:\\Users\\LiuHY\\Desktop\\java",
"C:\\Users\\LiuHY\\Desktop\\java2",
"C:\\Users\\LiuHY\\Desktop\\fortest.txt" };
String outDir = "C:\\Users\\LiuHY\\Desktop\\aaa.zip";
ZipUtil.toZip(srcDir, outDir, true);
}
}

/**
*
* @Description (解压)
* @param zipPath zip路径
* @param charset 编码
* @param outPutPath 输出路径
*/
public static void decompression(String zipPath, String charset, String outPutPath) {
long startTime=System.currentTimeMillis();
try {
ZipInputStream Zin=new ZipInputStream(new FileInputStream(zipPath), Charset.forName(charset));//输入源zip路径
BufferedInputStream Bin=new BufferedInputStream(Zin);
String Parent = outPutPath; //输出路径（文件夹目录）
File Fout=null;
ZipEntry entry;
try {
while((entry = Zin.getNextEntry())!=null && !entry.isDirectory()){
Fout=new File(Parent,entry.getName());
if(!Fout.exists()){
(new File(Fout.getParent())).mkdirs();
}
FileOutputStream out=new FileOutputStream(Fout);
BufferedOutputStream Bout=new BufferedOutputStream(out);
int b;
while((b=Bin.read())!=-1){
Bout.write(b);
}
Bout.close();
out.close();
System.out.println(Fout+"解压成功");
}
Bin.close();
Zin.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
long endTime=System.currentTimeMillis();
System.out.println("耗费时间： "+(endTime-startTime)+" ms");
}