Java 压缩文件

1、controller

　　

        response.setContentType("APPLICATION/OCTET-STREAM");  
        response.setHeader("Content-Disposition","attachment; filename="+ DateUtil.getDate()+".zip");
        ZipOutputStream out = new ZipOutputStream(response.getOutputStream());
    	Calendar c = Calendar.getInstance();
        try {
        	for(Map<String, Object> m : list){
        		String uniqueid = m.get("uniqueid").toString();
        		//解析uniqueid  1530405990.12257796
        		String arr[] = uniqueid.split("\\.");
        		String datastr = arr[0]+"000";
        		c.setTimeInMillis(Long.parseLong(datastr));
        		String Y = String.valueOf(c.get(Calendar.YEAR));
        		String M;
        		String D;
        		int month = c.get(Calendar.MONTH) + 1;
        		int day = c.get(Calendar.DAY_OF_MONTH);
        		if(month<10){
        			M = "0"+month;
        		}else{
        			M = String.valueOf(month);
        		}
        		if(day<10){
        			D = "0"+day;
        		}else{
        			D = String.valueOf(day);
        		}
        		String url = Y+M+"/"+D+"/"+uniqueid+".WAV";
        		url = recordUrl+url;
        		ZipUtils.doCompress(request,url, out,uniqueid+".WAV");
        		response.flushBuffer();
        	}
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            out.close();
        }

　2、ziputils

package com.nilecom.utils;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import javax.servlet.http.HttpServletRequest;

import org.bouncycastle.util.encoders.UrlBase64;

public class ZipUtils {
    
    private ZipUtils(){
    }
    
    public static void doCompress(String srcFile, String zipFile) throws IOException {
        doCompress(new File(srcFile), new File(zipFile));
    }
    
    /**
     * 文件压缩
     * @param srcFile 目录或者单个文件
     * @param zipFile 压缩后的ZIP文件
     */
    public static void doCompress(File srcFile, File zipFile) throws IOException {
        ZipOutputStream out = null;
        try {
            out = new ZipOutputStream(new FileOutputStream(zipFile));
            doCompress(srcFile, out);
        } catch (Exception e) {
            throw e;
        } finally {
            out.close();//记得关闭资源
        }
    }
    
    public static void doCompress(HttpServletRequest request,String filelName, ZipOutputStream out,String name) throws IOException, URISyntaxException{
　　　　　//下面是网络路径  先从吧文件下载到本地在进行压缩
    	URL url = new URL(filelName);
    	HttpURLConnection conn = (HttpURLConnection)url.openConnection();  
    	InputStream inputStream = conn.getInputStream();  
    	 byte[] buffer = new byte[1024*10];  
         int len = 0;  
         String filePath = request.getSession().getServletContext().getRealPath("/")+"download\\";
         File saveDir = new File(filePath);
         if(!saveDir.exists()){
             saveDir.mkdir();
         }
         File file = new File(filePath+name); 
         FileOutputStream bos = new FileOutputStream(file);  
         while((len = inputStream.read(buffer)) != -1) {  
             bos.write(buffer, 0, len);  
         }  
        doCompress(file, out);
        bos.close();
        inputStream.close();
    }
    
    public static void doCompress(File file, ZipOutputStream out) throws IOException{
        doCompress(file, out, "");
    }
    
    public static void doCompress(File inFile, ZipOutputStream out, String dir) throws IOException {
        if ( inFile.isDirectory() ) {
            File[] files = inFile.listFiles();
            if (files!=null && files.length>0) {
                for (File file : files) {
                    String name = inFile.getName();
                    if (!"".equals(dir)) {
                        name = dir + "/" + name;
                    }
                    ZipUtils.doCompress(file, out, name);
                }
            }
        } else {
             ZipUtils.doZip(inFile, out, dir);
        }
    }
    
    public static void doZip(File inFile, ZipOutputStream out, String dir) throws IOException {
        String entryName = null;
        if (!"".equals(dir)) {
            entryName = dir + "/" + inFile.getName();
        } else {
            entryName = inFile.getName();
        }
        ZipEntry entry = new ZipEntry(entryName);
        out.putNextEntry(entry);
        
        int len = 0 ;
        byte[] buffer = new byte[1024];
        FileInputStream fis = new FileInputStream(inFile);
        while ((len = fis.read(buffer)) > 0) {
            out.write(buffer, 0, len);
            out.flush();
        }
        out.closeEntry();
        fis.close();
    }
    
    public static void main(String[] args) throws IOException {
        doCompress("D:/java/", "D:/java.zip");
    }
    
}