try {            ZipUtil2.zip(exportPath, exportPath+".zip");        } catch (Exception e) {            // TODO Auto-generated catch block            e.printStackTrace();        }

package com.tecsun.idc.utils;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.Enumeration;import java.util.zip.ZipEntry;import java.util.zip.ZipFile;import java.util.zip.ZipOutputStream;public class ZipUtil2 {          public static void zip(String src, String dest) throws IOException {      //提供了一个数据项压缩成一个ZIP归档输出流      ZipOutputStream out = null;      try {              File outFile = new File(dest);//源文件或者目录       File fileOrDirectory = new File(src);//压缩文件路径       out = new ZipOutputStream(new FileOutputStream(outFile));       //如果此文件是一个文件，否则为false。       if (fileOrDirectory.isFile()) {        zipFileOrDirectory(out, fileOrDirectory, "");       } else {        //返回一个文件或空阵列。        File[] entries = fileOrDirectory.listFiles();        for (int i = 0; i < entries.length; i++) {         // 递归压缩，更新curPaths         zipFileOrDirectory(out, entries[i], "");        }       }      } catch (IOException ex) {       ex.printStackTrace();      } finally {       //关闭输出流       if (out != null) {        try {         out.close();        } catch (IOException ex) {         ex.printStackTrace();        }       }      }     }          private static void zipFileOrDirectory(ZipOutputStream out,       File fileOrDirectory, String curPath) throws IOException {      //从文件中读取字节的输入流      FileInputStream in = null;      try {       //如果此文件是一个目录，否则返回false。       if (!fileOrDirectory.isDirectory()) {        // 压缩文件        byte[] buffer = new byte[4096];        int bytes_read;        in = new FileInputStream(fileOrDirectory);        //实例代表一个条目内的ZIP归档        ZipEntry entry = new ZipEntry(curPath          + fileOrDirectory.getName());        //条目的信息写入底层流        out.putNextEntry(entry);        while ((bytes_read = in.read(buffer)) != -1) {         out.write(buffer, 0, bytes_read);        }        out.closeEntry();       } else {        // 压缩目录        File[] entries = fileOrDirectory.listFiles();        for (int i = 0; i < entries.length; i++) {         // 递归压缩，更新curPaths         zipFileOrDirectory(out, entries[i], curPath           + fileOrDirectory.getName() + "/");        }       }      } catch (IOException ex) {       ex.printStackTrace();       // throw ex;      } finally {       if (in != null) {        try {         in.close();        } catch (IOException ex) {         ex.printStackTrace();        }       }      }     }          @SuppressWarnings("unchecked")     public static void unzip(String zipFileName, String outputDirectory)       throws IOException {      ZipFile zipFile = null;      try {       zipFile = new ZipFile(zipFileName);       Enumeration e = zipFile.entries();       ZipEntry zipEntry = null;       File dest = new File(outputDirectory);       dest.mkdirs();       while (e.hasMoreElements()) {        zipEntry = (ZipEntry) e.nextElement();        String entryName = zipEntry.getName();        InputStream in = null;        FileOutputStream out = null;        try {         if (zipEntry.isDirectory()) {          String name = zipEntry.getName();          name = name.substring(0, name.length() - 1);          File f = new File(outputDirectory + File.separator            + name);          f.mkdirs();         } else {          int index = entryName.lastIndexOf("\\");          if (index != -1) {           File df = new File(outputDirectory + File.separator             + entryName.substring(0, index));           df.mkdirs();          }          index = entryName.lastIndexOf("/");          if (index != -1) {           File df = new File(outputDirectory + File.separator             + entryName.substring(0, index));           df.mkdirs();          }          File f = new File(outputDirectory + File.separator            + zipEntry.getName());          // f.createNewFile();          in = zipFile.getInputStream(zipEntry);          out = new FileOutputStream(f);          int c;          byte[] by = new byte[1024];          while ((c = in.read(by)) != -1) {           out.write(by, 0, c);          }          out.flush();         }        } catch (IOException ex) {         ex.printStackTrace();         throw new IOException("解压失败：" + ex.toString());        } finally {         if (in != null) {          try {           in.close();          } catch (IOException ex) {          }         }         if (out != null) {          try {           out.close();          } catch (IOException ex) {          }         }        }       }      } catch (IOException ex) {       ex.printStackTrace();       throw new IOException("解压失败：" + ex.toString());      } finally {       if (zipFile != null) {        try {         zipFile.close();        } catch (IOException ex) {        }       }      }     }    }