java将文件打包zip

ZipUtil.java

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package com.soc.cloud.groupAssetDataManage.util;   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.util.Date; import java.util.List; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream;   import com.soc.cloud.excel.util.DateUtil;   public class ZipUtil {       /**      *      * @param imgUrl  需要打包的路径集合      * @param zipFilePathExport 打包后zip所在的文件夹      * @param zipFileName 打包后zip文件名      * @return      */     public static String toZip2(List<String> imgUrl,String zipFilePathExport,String zipFileName) {               ZipOutputStream zos = null ;     BufferedOutputStream out;     try {         out = new BufferedOutputStream(new FileOutputStream(new File(zipFilePathExport +"/"+ zipFileName)));         zos = new ZipOutputStream(out);                   // 将所有文件打包进zip包         for (String isfileUrl : imgUrl) {             File isfile = new File(isfileUrl);             String fileName = isfileUrl.substring(isfileUrl.lastIndexOf("/")+1);                           if(isfile.exists()) {                 InputStream in = new BufferedInputStream(new FileInputStream(isfile));                 zos.putNextEntry(new ZipEntry(fileName));                 byte[] b2 = new byte[1024];                 int bytesRead2;                 while ((bytesRead2 = in.read(b2)) > 0) {                     zos.write(b2, 0, bytesRead2);                 }                 in.close();                 zos.closeEntry();             }         }     }  catch (Exception e) {         e.printStackTrace();     } finally {         try {             zos.close();         } catch (IOException e) {             e.printStackTrace();         }     }               // 返回zip的路径（传回页面进行导出）     return zipFilePathExport + "/" + zipFileName;       } }