java压缩解压缩_Java压缩和解压缩文件

publicvoidcreateZip(String sourceDir, String zipFileName)throwsException {

File folderObject=newFile(sourceDir);if(folderObject.exists()) {

ArrayListfileList=getSubFiles(newFile(sourceDir));

ZipOutputStream zos=newZipOutputStream(newFileOutputStream(zipFileName));

ZipEntry ze=null;byte[] buf=newbyte[1024];intreadLen=0;for(inti=0; i

File f=(File)fileList.get(i);

System.out.println("Adding:"+f.getPath()+f.getName());

ze=newZipEntry(getAbsFileName(sourceDir, f));

ze.setSize(f.length());

ze.setTime(f.lastModified());

zos.putNextEntry(ze);

InputStream is=newBufferedInputStream(newFileInputStream(f));while((readLen=is.read(buf,0,1024))!=-1) {

zos.write(buf,0, readLen);

}

is.close();

System.out.println("done...");

}

zos.close();

}else{thrownewException("The folder is not exist");

}

}privateArrayListgetSubFiles(File baseDir) {

ArrayListret=newArrayList();

File[] tmp=baseDir.listFiles();for(inti=0; i

ret.add(tmp[i]);

}if(tmp[i].isDirectory()) {

ret.addAll(getSubFiles(tmp[i]));

}

}returnret;

}privateString getAbsFileName(String baseDir, File realFileName) {

File real=realFileName;

File base=newFile(baseDir);

String ret=real.getName();while(true) {

real=real.getParentFile();if(real==null)break;if(real.equals(base))break;else{

ret=real.getName()+"/"+ret;

}

}returnret;

}