org.apache.tools.zip.*和org.apache.commons.httpclient.*实现远程文件打包下载，支持中文文件名

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package com.kedacom.kdkk.controller.querymanager;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import java.util.regex.Pattern;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;
public class BatchDownload extends HttpServlet {
private static List list = new ArrayList();
Date date = null;
private static int BUF_SIZE = 40480;  
private static String ZIP_ENCODEING = "GBK";  

public BatchDownload() {
super();
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//设置编码
request.setCharacterEncoding("utf-8");
date =  new Date();
//设置下载头信息
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment; filename=\""+date.getTime()+".zip\"");
//要打包下载的图片json参数
String cbxStr = request.getParameter("cbxStr");
if(cbxStr.length() > 0){
cbxStr = cbxStr.substring(0, cbxStr.length()-1);
String [] cbxs = cbxStr.split(";");
HttpClient client = new HttpClient();
GetMethod get = null;
//创建本地存储文件路径
new File("d:/vehicleImgs/"+date.getTime()+"/").mkdir();
for(int i = 0; i < cbxs.length; i ++){
try {   
//构建远程服务的图片下载路径
String cbxs2 [] = cbxs.split("z");
String vid = cbxs2[0];
String timestamp = cbxs2[1];
String imgtype = cbxs2[2].split(",")[0];
String imgName = cbxs2[3];
imgName = imgName.replace(" ", "_").replace(":", "_");
DateFormat format1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Long timeStamp = format1.parse(timestamp).getTime();
String imgUrl = getServletContext().getInitParameter("opticmServer");                 
//此方法的参数可自行传入，参数值为远程服务的servlet(xxx.do),返回的值为文件流对象
get = new GetMethod(imgUrl+"&contentId="+vid+"&imgType="+imgtype+"&imgOrder=0&timeStamp="+timeStamp);   
int j = client.executeMethod(get);                              
if (200 == j)//是否正确返回                                                   
{                                                               
File storeFile = new File("d:/vehicleImgs/"+date.getTime()+"/"+imgName+".jpg");
FileOutputStream output = new FileOutputStream(storeFile);  
// 得到网络资源的字节数组,并写入文件                        
output.write(get.getResponseBody());                        
output.close();      
}else{                                                               
System.out.println("no pic");                              
}                                                           
} catch ( Exception e ){                                                                  
System.out.println("Exception no pic");                                   
} finally{
get.releaseConnection();
}
}
try {
//开始压缩下载下来的本机图片
zip("d:\\vehicleImgs\\"+date.getTime()+".zip", new File("d:\\vehicleImgs\\"+date.getTime()+"\\"));
//下载zip打包后的文件
FileInputStream fis = new FileInputStream("d:\\vehicleImgs\\"+date.getTime()+".zip");
byte[] bytes=new byte[BUF_SIZE];
int r = 0;   
response.flushBuffer();
while((r=fis.read(bytes))>0) {
response.getOutputStream().write(bytes,0,r);
}
fis.close();
response.getOutputStream().close();
} catch (Exception e) {
e.printStackTrace();
}  
}
}
/**
* 压缩文件或文件夹
*  
* @param zipFileName
* @param inputFile
* @throws Exception
*/  
public void zip(String zipFileName, File inputFile) throws Exception {  
// 未指定压缩文件名，默认为"ZipFile"   
if (zipFileName == null || zipFileName.equals(""))  
zipFileName = "ZipFile";  
// 添加".zip"后缀   
if (!zipFileName.endsWith(".zip"))  
zipFileName += ".zip";  
// 创建文件夹   
File f = null;
String path = Pattern.compile("[\\/]").matcher(zipFileName).replaceAll(File.separator);  
int endIndex = path.lastIndexOf(File.separator);  
path = path.substring(0, endIndex);  
f = new File(path);
f.mkdirs();  
// 开始压缩   
{  
ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFileName)));  
zos.setEncoding(ZIP_ENCODEING);  
compress(zos, inputFile, "");
zos.close();  
}  
}  
/**
* 压缩一个文件夹或文件对象到已经打开的zip输出流 <b>不建议直接调用该方法</b>
*  
* @param zos
* @param f
* @param fileName
* @throws Exception
*/  
public void compress(ZipOutputStream zos, File f, String fileName) throws Exception {  
if (f.isDirectory()) {  
// 压缩文件夹   
File[] fl = f.listFiles();  
zos.putNextEntry(new ZipEntry(fileName + "/"));  
fileName = fileName.length() == 0 ? "" : fileName + "/";  
for (int i = 0; i < fl.length; i++) {  
compress(zos, fl, fileName + fl.getName());  
}  
} else {  
// 压缩文件   
zos.putNextEntry(new ZipEntry(fileName));  
FileInputStream fis = new FileInputStream(f);  
this.inStream2outStream(fis, zos);  
zos.flush();
fis.close();  
zos.closeEntry();  
}  
}  
public void inStream2outStream(InputStream is, OutputStream os) throws IOException {  
BufferedInputStream bis = new BufferedInputStream(is);  
BufferedOutputStream bos = new BufferedOutputStream(os);  
int bytesRead = 0;  
for (byte[] buffer = new byte[BUF_SIZE]; ((bytesRead = bis.read(buffer, 0, BUF_SIZE)) != -1);) {  
bos.write(buffer, 0, bytesRead); // 将流写入   
}  
}  

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doGet(request, response);
}
}