java Zip文件的压缩与解压, 兼容Windows和Linux

importjava.io.BufferedInputStream;

importjava.io.BufferedOutputStream;

importjava.io.Closeable;

importjava.io.File;

importjava.io.FileInputStream;

importjava.io.FileOutputStream;

importjava.io.IOException;

importjava.util.zip.ZipEntry;

importjava.util.zip.ZipInputStream;

importjava.util.zip.ZipOutputStream;

/**

* zip文件解压与压缩

*@authorzhanglei

*@date创建时间：2016年11月24日 下午5:00:07

*/

public classZipUtil {

/**

* 压缩文件

*

*@paramfilePath待压缩的文件路径

*@return压缩后的文件

*/

public static File zip(String filePath) {

File target =null;

File source =newFile(filePath);

if(source.exists()) {

// 压缩文件名=源文件名.zip

String zipName = source.getName() + ".zip";

target =newFile(source.getParent(), zipName);

if(target.exists()) {

target.delete();// 删除旧的文件

}

FileOutputStream fos =null;

ZipOutputStream zos =null;

try{

fos =newFileOutputStream(target);

zos =newZipOutputStream(newBufferedOutputStream(fos));

// 添加对应的文件Entry

addEntry("/", source, zos);

}catch(IOException e) {

throw new RuntimeException(e);

}finally{

ZipUtil.close(zos, fos);

}

}

returntarget;

}

/**

* 解压文件

*

*@paramfilePath压缩文件路径

*/

public static void unzip(String filePath) {

File source =newFile(filePath);

if(source.exists()) {

ZipInputStream zis =null;

BufferedOutputStream bos =null;

try{

zis =newZipInputStream(newFileInputStream(source));

ZipEntry entry =null;

while((entry = zis.getNextEntry()) !=null) {

if(!entry.isDirectory()){

File target =newFile(source.getParent(), entry.getName());

if(!target.getParentFile().exists()) {

// 创建文件父目录

target.getParentFile().mkdirs();

}

// 写入文件

bos = newBufferedOutputStream(newFileOutputStream(target));

intread =0;

byte[] buffer = new byte[1024*10];

while((read = zis.read(buffer,0, buffer.length)) != -1) {

bos.write(buffer,0, read);

}

bos.flush();

ZipUtil.close(bos);

}

}

zis.closeEntry();

}catch(IOException e) {

throw new RuntimeException(e);

}finally{

ZipUtil.close(zis, bos);

}

}

}

/**

* 扫描添加文件Entry

*

*@parambase基路径

*

*@paramsource源文件

*@paramzosZip文件输出流

*@throwsIOException

*/

private static void addEntry(String base, File source, ZipOutputStream zos)throwsIOException {

// 按目录分级，形如：/aaa/bbb.txt

// String entry = base + source.getName();

String entry = source.getName();

if(source.isDirectory()) {

for(File file : source.listFiles()) {

// 递归列出目录下的所有文件，添加文件Entry

addEntry(entry + "/", file, zos);

}

}else{

FileInputStream fis =null;

BufferedInputStream bis =null;

try{

byte[] buffer = new byte[1024*10];

fis =newFileInputStream(source);

bis =newBufferedInputStream(fis, buffer.length);

intread =0;

zos.putNextEntry(newZipEntry(entry));

while((read = bis.read(buffer,0, buffer.length)) != -1) {

zos.write(buffer,0, read);

}

zos.closeEntry();

}finally{

ZipUtil.close(bis, fis);

}

}

}

/**

* 关闭流对象

*

*@paramcloseables可关闭的流对象列表

*@throwsIOException

*/

private static void close(Closeable... closeables) {

if(closeables !=null) {

for(Closeable closeable : closeables) {

if(closeable !=null) {

try{

closeable.close();

}catch(IOException e) {

e.printStackTrace();

}

}

}

}

}

}