java 打包文件(文件夹)为 zip压缩包 java 压缩文件

         使用JAVA本身的ZIP API打包带有中文名称的文件(目录)会出现乱码,且winzip无法解压,如果要解决此问题,可以将

import java.util.zip.ZipOutputStream;
import java.util.zip.ZipEntry;

换为ant.jar中的API

	/**
	 * 压缩文件(.zip)的函数 
	 * @param zipDirectory:(需要)压缩的文件夹路径
	 * @param zipPath:文件压缩后放置的路径,该路径可以为null,null表示压缩到原文件的同级目录
	 * @return :返回一个压缩好的文件(File),否则返回null
	 */
	public File doZip(String zipDirectory, String zipPath) {
		File zipDir = new File(zipDirectory);

		if (zipPath == null) {
			zipPath = zipDir.getParent();
		}

		// 压缩后生成的zip文件名
		String zipFileName = zipPath + "/" + zipDir.getName() + ".zip";

		try {
			zipOut = new ZipOutputStream(new BufferedOutputStream(
					new FileOutputStream(zipFileName)));

			// 压缩文件
			handleDir(zipDir, zipDir.getParent().length() + 1, zipOut);

			zipOut.close();

			return new File(zipFileName);
		} catch (IOException e) {
			logger.error(e);
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 由doZip调用,递归完成目录文件读取
	 * @param dir:(需要)压缩的文件夹(File 类型)
	 * @param len:一个参数(记录压缩文件夹的parent路径的长度)
	 * @param zipOut:需要压缩进的压缩文件
	 * @throws IOException:如果出错,会抛出IOE异常
	 */
	private void handleDir(File dir, int len, ZipOutputStream zipOut)
			throws IOException {
		FileInputStream fileIn = null;
		File[] files = dir.listFiles();

		if (files != null) {
			if (files.length > 0) { // 如果目录不为空,则分别处理目录和文件.
				for (File fileName : files) {

					if (fileName.isDirectory()) {
						handleDir(fileName, len, zipOut);

					} else {
						fileIn = new FileInputStream(fileName);

						zipOut.putNextEntry(new ZipEntry(fileName.getPath()
								.substring(len).replaceAll("\\\\", "/")));

						while ((readedBytes = fileIn.read(buf)) > 0) {
							zipOut.write(buf, 0, readedBytes);
						}
						zipOut.closeEntry();
					}
				}
			} else { // 如果目录为空,则单独创建之.
				zipOut.putNextEntry(new ZipEntry(dir.getPath().substring(len)
						+ "/"));
				zipOut.closeEntry();
			}
		} else {// 如果是一个单独的文件
			fileIn = new FileInputStream(dir);

			zipOut.putNextEntry(new ZipEntry(dir.getPath().substring(len)));

			while ((readedBytes = fileIn.read(buf)) > 0) {
				zipOut.write(buf, 0, readedBytes);
			}
			zipOut.closeEntry();
		}
	}

	/**
	 * 解压指定zip文件
	 * @param unZipfileName:需要解压的zip文件路径
	 * @param unZipPath:文件解压的路径,该路径可以为null,null表示解压到原文件的同级目录
	 */
	public boolean unZip(String unZipfileName, String unZipPath) {// unZipfileName需要解压的zip文件名
		FileOutputStream fileOut = null;
		InputStream inputStream = null;
		File file = null;

		if (unZipPath == null) {
			unZipPath = new File(unZipfileName).getParent();
			// System.out.println("1 -> " + unZipPath);

			if (!(unZipPath.substring(unZipPath.length()).endsWith("/") || unZipPath
					.substring(unZipPath.length()).endsWith("\\"))) {
				unZipPath += "/";
			}

		} else {
			unZipPath = new File(unZipPath).getPath() + "/";
		}

		try {
			zipFile = new ZipFile(unZipfileName);

			for (Enumeration<?> entries = zipFile.getEntries(); entries
					.hasMoreElements();) {
				ZipEntry entry = (ZipEntry) entries.nextElement();
				int iTEMP = entry.getName().indexOf("/") + 1;

				file = new File(unZipPath
						+ entry.getName().substring(iTEMP,
								entry.getName().length()));

				if (entry.isDirectory()) {
					file.mkdirs();
				} else {
					// 如果指定文件的目录不存在,则创建之.
					File parent = file.getParentFile();
					if (!parent.exists()) {
						parent.mkdirs();
					}

					inputStream = zipFile.getInputStream(entry);

					fileOut = new FileOutputStream(file);
					while ((this.readedBytes = inputStream.read(this.buf)) > 0) {
						fileOut.write(this.buf, 0, this.readedBytes);
					}
					fileOut.close();

					inputStream.close();
				}
			}
			this.zipFile.close();
			return true;
		} catch (IOException ioe) {
			logger.error(ioe);
			ioe.printStackTrace();
			return false;
		}
	}