ZIPUtil

package Testlink;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

public class ZIPUtil {
	private File workspaceFile;
	private File dirFile;
	private File jmeterDirectory;
	private File jmeterZip;
	private String workspacePath;
	private String jmeterDirectoryPath;
	private String jmeterZipPath;

	public void UnZipFile() throws IOException {
		workspaceFile = new File("");
		workspacePath = workspaceFile.getAbsolutePath();

		dirFile = new File(workspacePath);

		File[] files = dirFile.listFiles();

		jmeterDirectoryPath = (workspacePath + "\JmeterFolder");

		jmeterDirectory = new File(jmeterDirectoryPath);

		File[] zipFiles =jmeterDirectory.listFiles();

		jmeterZipPath = (jmeterDirectoryPath + "\apache-jmeter-4.0.zip");

		jmeterZip = new File(jmeterZipPath);

		ZipFile zipFile = new ZipFile(jmeterZip, Charset.forName("GBK"));
		
		if (files.length != 0) {
			File[] arrayOfFile1;
			int j = (arrayOfFile1 = files).length;
			for (int i = 0; i < j; i++) {
				File file = arrayOfFile1[i];
				if (file.getName().equals("JmeterFolder")) {
					if (zipFiles.length != 0) {
						File[] arrayOfFile2;
						int m = (arrayOfFile2 = zipFiles).length;
						for (int k = 0; k < m; k++) {
							File jmeterZipFile = arrayOfFile2[k];
							if (jmeterZipFile.getName().equals("apache-jmeter-4.0.zip")) {
								for (Enumeration entries = zipFile.entries(); entries.hasMoreElements();) {
									ZipEntry entry = (ZipEntry) entries.nextElement();
									String zipEntryName = entry.getName();
									InputStream in = zipFile.getInputStream(entry);
									String outPath = (jmeterDirectoryPath + "\" + zipEntryName).replaceAll("\*",
											"/");

									File jmeterFile = new File(outPath.substring(0, outPath.lastIndexOf('/')));
									if (!jmeterFile.exists()) {
										jmeterFile.mkdirs();
									}
									if (!new File(outPath).isDirectory()) {
										System.out.println(outPath);
										OutputStream out = new FileOutputStream(outPath);
										byte[] buf1 = new byte[1024];
										int len;
										while((len=in.read(buf1, 0, 1024))!=-1)  {
											out.write(buf1, 0, len);
										}
										in.close();
										out.close();
									}
								}
								System.out.println("******************解压完毕********************");
							} else {
								System.out.println("apache-jmeter-4.0.zip文件不存在");
							}
						}
					} else {
						System.out.println("JmeterFolder文件夹为空");
					}
				}
			}
		} else {
			System.out.println("文件夹内容为空");
		}
	}
}