zipfile.java

一个全面的JSP+Oracle的小型管理系统

/**
 * @(#) ZipFile.java
 *
 * Copyright 2004 Opensource Develop Team. All rights reserved.
 */
package cr.web;

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

/**
 * 关于ZIP压缩文件的问题,在该类中主要演示在ZIP压缩中可以不把文件路径压缩进去
 * 
 * @author Y.P.W
 * @version 1.0 05/03/22
 */
public class ZipFile
{
	public void add_Zip()
	{
		ArrayList fileNames = new ArrayList(); // 存放文件名,并非含有路径的名字
		ArrayList files = new ArrayList(); // 存放文件对象		
		try
		{
			FileOutputStream fileOut = new FileOutputStream("D:/tomcat/webapps/ROOT/mes_out.zip");
			ZipOutputStream outputStream = new ZipOutputStream(fileOut);
			
			File rootFile = new File("D:/tomcat/webapps/ROOT/mes_out");
			listFile(rootFile, fileNames, files);
						
			for (int loop=0; loop<files.size(); loop++)
			{
				FileInputStream fileIn = new FileInputStream((File)files.get(loop));
				outputStream.putNextEntry(new ZipEntry((String)fileNames.get(loop)));
				byte[] buffer = new byte[1024];
				while (fileIn.read(buffer) != -1)
				{
					outputStream.write(buffer);
				}
				
				outputStream.closeEntry();
				fileIn.close();
			}
			
			outputStream.close();
		}
		catch (IOException ioe)
		{
			ioe.printStackTrace();
		}
	}
	
	static void  listFile(File parentFile, List nameList, List fileList)
	{
		if (parentFile.isDirectory())
		{
			File[] files = parentFile.listFiles();
			for (int loop=0; loop<files.length; loop++)
			{
				listFile(files[loop], nameList, fileList);
			}
		}
		else
		{
			fileList.add(parentFile);
			nameList.add(parentFile.getName());
		}
	}
}