java压缩

package utils;import java.io.BufferedInputStream;  import java.io.BufferedOutputStream;  import java.io.File;  import java.io.FileInputStream;  import java.io.FileNotFoundException;  import java.io.FileOutputStream;  import java.io.IOException;  import java.io.InputStream;  import java.util.Enumeration;    import org.apache.tools.zip.ZipEntry;  import org.apache.tools.zip.ZipFile;  import org.apache.tools.zip.ZipOutputStream;    public class ZipUtil {        private static final int BUFFEREDSIZE = 1024;      public void zip(String zipFileName, String filePath, boolean isDelete) throws Exception {          zip(zipFileName, new File(filePath), isDelete);      }      public void zip(String zipFileName, File inputFile, boolean isDelete) throws Exception {          ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));          if (!inputFile.exists()) {              throw new FileNotFoundException("在指定路径未找到需要压缩的文件！");          }          zip(out, inputFile, "", isDelete);          out.close();      }        private void zip(ZipOutputStream out, File inputFile, String base, boolean isDelete) throws Exception {          if (inputFile.isDirectory()) { // 如果是目录              File[] inputFiles = inputFile.listFiles();              out.putNextEntry(new ZipEntry(base + "/"));              base = base.length() == 0 ? "" : base + "/";              for (int i = 0; i < inputFiles.length; i++) {                  zip(out, inputFiles[i], base + inputFiles[i].getName(), isDelete);              }          } else { // 如果是文件              if (base.length() > 0) {                  out.putNextEntry(new ZipEntry(base));              } else {                  out.putNextEntry(new ZipEntry(inputFile.getName()));              }              FileInputStream in = new FileInputStream(inputFile);              try {                  int len;                  byte[] buff = new byte[BUFFEREDSIZE];                  while ((len = in.read(buff)) != -1) {                      out.write(buff, 0, len);                  }              } catch (IOException e) {                  throw e;              } finally {                  in.close();              }          }          if (isDelete) {              inputFile.delete();          }      }  }