ZipUtils.java

package com.jerome.utils.file;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

/**
 * 
 * ClassName:ZipUtils <br>
 * Function: Android文件解压压缩
 * 
 * @author Jerome Song
 * @version
 * @since Ver 1.1
 * @Date 2013 2013-5-15 下午10:00:57
 * 
 * @see
 */
public class ZipUtils {

	/**
	 * 取得压缩包中的 文件列表(文件夹,文件自选)
	 * 
	 * @param zipFileString
	 *            压缩包名字
	 * @param bContainFolder
	 *            是否包括 文件夹
	 * @param bContainFile
	 *            是否包括 文件
	 * @return
	 * @throws Exception
	 */
	public static List<File> GetFileList(String zipFileString,
			boolean bContainFolder, boolean bContainFile) throws Exception {

		List<File> fileList = new ArrayList<File>();
		ZipInputStream inZip = new ZipInputStream(new FileInputStream(
				zipFileString));
		ZipEntry zipEntry;
		String szName = "";

		while ((zipEntry = inZip.getNextEntry()) != null) {
			szName = zipEntry.getName();

			if (zipEntry.isDirectory()) {

				// get the folder name of the widget
				szName = szName.substring(0, szName.length() - 1);
				File folder = new File(szName);
				if (bContainFolder) {
					fileList.add(folder);
				}

			} else {
				File file = new File(szName);
				if (bContainFile) {
					fileList.add(file);
				}
			}
		}// end of while

		inZip.close();

		return fileList;
	}

	/**
	 * 返回压缩包中的文件InputStream
	 * 
	 * @param zipFileString
	 *            压缩文件的名字
	 * @param fileString
	 *            解压文件的名字
	 * @return InputStream
	 * @throws Exception
	 */
	public static java.io.InputStream UpZip(String zipFileString,
			String fileString) throws Exception {
		ZipFile zipFile = new ZipFile(zipFileString);
		ZipEntry zipEntry = zipFile.getEntry(fileString);

		return zipFile.getInputStream(zipEntry);

	}

	/**
	 * 解压一个压缩文档 到指定位置
	 * 
	 * @param zipFileString
	 *            压缩包的名字
	 * @param outPathString
	 *            指定的路径
	 * @throws Exception
	 */
	public static void UnZipFolder(String zipFileString, String outPathString)
			throws Exception {
		ZipInputStream inZip = new ZipInputStream(new FileInputStream(
				zipFileString));
		ZipEntry zipEntry;
		String szName = "";

		while ((zipEntry = inZip.getNextEntry()) != null) {
			szName = zipEntry.getName();

			if (zipEntry.isDirectory()) {

				// get the folder name of the widget
				szName = szName.substring(0, szName.length() - 1);
				File folder = new File(outPathString + File.separator + szName);
				folder.mkdirs();

			} else {

				File file = new File(outPathString + File.separator + szName);
				File parent = file.getParentFile();
				if (!parent.exists()) {
					parent.mkdirs();
				}
				file.createNewFile();
				// get the output stream of the file
				FileOutputStream out = new FileOutputStream(file);
				int len;
				byte[] buffer = new byte[1024];
				// read (len) bytes into buffer
				while ((len = inZip.read(buffer)) != -1) {
					// write (len) byte from buffer at the position 0
					out.write(buffer, 0, len);
					out.flush();
				}
				out.close();
			}
		}// end of while

		inZip.close();

	}// end of func

	/**
	 * 压缩文件,文件夹
	 * 
	 * @param srcFileString
	 *            要压缩的文件/文件夹名字
	 * @param zipFileString
	 *            指定压缩的目的和名字
	 * @throws Exception
	 */
	public static void ZipFolder(String srcFileString, String zipFileString)
			throws Exception {

		// 创建Zip包
		ZipOutputStream outZip = new ZipOutputStream(new FileOutputStream(
				zipFileString));

		// 打开要输出的文件
		File file = new File(srcFileString);

		// 压缩
		ZipFiles(file.getParent() + File.separator, file.getName(), outZip);

		// 完成,关闭
		outZip.finish();
		outZip.close();

	}// end of func

	/**
	 * 压缩文件
	 * 
	 * @param folderString
	 * @param fileString
	 * @param zipOutputSteam
	 * @throws Exception
	 */
	private static void ZipFiles(String folderString, String fileString,
			ZipOutputStream zipOutputSteam) throws Exception {
		if (zipOutputSteam == null)
			return;

		File file = new File(folderString + fileString);

		// 判断是不是文件
		if (file.isFile()) {
			ZipEntry zipEntry = new ZipEntry(fileString);
			FileInputStream inputStream = new FileInputStream(file);
			zipOutputSteam.putNextEntry(zipEntry);
			int len;
			byte[] buffer = new byte[4096];

			while ((len = inputStream.read(buffer)) != -1) {
				zipOutputSteam.write(buffer, 0, len);
			}

			zipOutputSteam.closeEntry();
			inputStream.close();
		} else {

			// 文件夹的方式,获取文件夹下的子文件
			String fileList[] = file.list();

			// 如果没有子文件, 则添加进去即可
			if (fileList.length <= 0) {
				ZipEntry zipEntry = new ZipEntry(fileString + File.separator);
				zipOutputSteam.putNextEntry(zipEntry);
				zipOutputSteam.closeEntry();
			}

			// 如果有子文件, 遍历子文件
			for (int i = 0; i < fileList.length; i++) {
				ZipFiles(folderString, fileString + File.separator
						+ fileList[i], zipOutputSteam);
			}// end of for

		}// end of if

	}// end of func
}