private InitData getInitFile(String path) {
		Properties p = new Properties();

		try {
			ZipInputStream zipIn = new ZipInputStream(new BufferedInputStream(
					new FileInputStream(path)));
			FileOutputStream fileOut = null;
			ZipEntry entry = null;
			byte[] buf = new byte[1024];

			while ((entry = zipIn.getNextEntry()) != null) {
				if (entry.getName().endsWith(InitData.INIT_FILE_NAME)) {
					p.load(zipIn);
				} else {
					zipIn.closeEntry();
				}
			}
			zipIn.close();
		} catch (Exception e) {
			logger.debug("Putting instrumented entry: error=" + e.getMessage(),
					e);
		}
		return new InitData(p);
	}

下面是把往zip里面塞一个序列化文件
public static void main(String[] args) {
		try {
			String path = "d:/aaa.war";
			ZipInputStream zipIn = new ZipInputStream(new BufferedInputStream(
					new FileInputStream(path)));
			ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(
					"d:/aaa1.war"));
			ZipEntry entry = null;

			while ((entry = zipIn.getNextEntry()) != null) {
				ZipEntry zipOutEntry = new ZipEntry(entry.getName());
				zipOutEntry.setComment(entry.getComment());
				zipOutEntry.setExtra(entry.getExtra());
				zipOutEntry.setTime(entry.getTime());
				zipOut.putNextEntry(zipOutEntry);
				byte[] entryBytes = IOUtil
						.createByteArrayFromInputStream(zipIn);

				zipOut.write(entryBytes);
				zipOut.flush();
				zipOut.closeEntry();
			}
			Test t = new Test();
			t.setName("aaaa");
			ZipEntry outputEntry = new ZipEntry("test.ser");
			zipOut.putNextEntry(outputEntry);

			ByteArrayOutputStream b = new ByteArrayOutputStream();
			ObjectOutputStream o = new ObjectOutputStream(b);
			o.writeObject(t);
			byte[] entryBytes = b.toByteArray();
			zipOut.write(entryBytes);
			zipOut.closeEntry();

			zipIn.close();
			zipOut.close();

			File f = new File(path);
			f.delete();
			File ff = new File("d:/aaa1.war");
			ff.renameTo(f);
		} catch (Exception e) {
			System.out.println(e);
		}
	}


//下面这个是解压的
public void setFileItem(FileItem fileItem) throws Exception {
		String baseDir = super.getSrcPath();
		BufferedOutputStream dest = null;
		ZipInputStream zis = new ZipInputStream(new BufferedInputStream(
				fileItem.getInputStream()));
		ZipEntry entry;
		this.mkdirs(baseDir);

		while ((entry = zis.getNextEntry()) != null) {
			int count;
			byte data[] = new byte[BUFFER];
			// write the files to the disk
			String entryName = entry.getName();
			String path = baseDir + entryName;
			File file = new File(path);
			if (entry.isDirectory()) {
				file.mkdirs();
			} else {
				this.mkdirs(path);
				FileOutputStream fos = new FileOutputStream(path);
				dest = new BufferedOutputStream(fos, BUFFER);
				while ((count = zis.read(data, 0, BUFFER)) != -1) {
					dest.write(data, 0, count);
				}
			}
                       if(dest!=null){
			   dest.flush();
			   dest.close();
                       }
			zis.closeEntry();
		}
		zis.close();
		this.srcPath = baseDir + fileItem.getFieldName();
	}

	private void mkdirs(String path) {
		path = path.replace("\\", "/");
		path = path.substring(0, path.lastIndexOf("/"));
		File file = new File(path);
		if (!file.exists())
			file.mkdirs();
	}

删除目录
private void deleteDirs(File file) {
		if (file.isDirectory()) {
			File[] files = file.listFiles();
			for (File f : files) {
				if (f.isFile())
					f.delete();
				else {
					deleteDirs(f);
				}
			}
			file.delete();
		} else {
			file.delete();
		}
	}