java将文件打包成ZIP压缩文件的工具类实例

package com.lanp;    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.util.zip.ZipEntry;  import java.util.zip.ZipOutputStream;    /**   * 将文件打包成ZIP压缩文件   * @author LanP   * @since 2012-3-1 15:47   */  public final class FileToZip {      private FileToZip() {       }      /**    * 将存放在sourceFilePath目录下的源文件,打包成fileName名称的ZIP文件,并存放到zipFilePath。    * @param sourceFilePath 待压缩的文件路径    * @param zipFilePath  压缩后存放路径    * @param fileName   压缩后文件的名称    * @return flag    */   public static boolean fileToZip(String sourceFilePath,String zipFilePath,String fileName) {    boolean flag = false;    File sourceFile = new File(sourceFilePath);    FileInputStream fis = null;    BufferedInputStream bis = null;    FileOutputStream fos = null;    ZipOutputStream zos = null;        if(sourceFile.exists() == false) {     System.out.println(">>>>>> 待压缩的文件目录：" + sourceFilePath + " 不存在. <<<<<<");    } else {     try {      File zipFile = new File(zipFilePath + "/" + fileName + ".zip");      if(zipFile.exists()) {       System.out.println(">>>>>> " + zipFilePath + " 目录下存在名字为：" + fileName + ".zip" + " 打包文件. <<<<<<");      } else {       File[] sourceFiles = sourceFile.listFiles();       if(null == sourceFiles || sourceFiles.length < 1) {        System.out.println(">>>>>> 待压缩的文件目录：" + sourceFilePath + " 里面不存在文件,无需压缩. <<<<<<");       } else {        fos = new FileOutputStream(zipFile);        zos = new ZipOutputStream(new BufferedOutputStream(fos));        byte[] bufs = new byte[1024*10];        for(int i=0;i<sourceFiles.length;i++) {         // 创建ZIP实体,并添加进压缩包         ZipEntry zipEntry = new ZipEntry(sourceFiles[i].getName());         zos.putNextEntry(zipEntry);         // 读取待压缩的文件并写进压缩包里         fis = new FileInputStream(sourceFiles[i]);         bis = new BufferedInputStream(fis,1024*10);         int read = 0;         while((read=bis.read(bufs, 0, 1024*10)) != -1) {          zos.write(bufs, 0, read);         }        }        flag = true;       }      }     } catch (FileNotFoundException e) {      e.printStackTrace();      throw new RuntimeException(e);     } catch (IOException e) {      e.printStackTrace();      throw new RuntimeException(e);     } finally {      // 关闭流      try {       if(null != bis) bis.close();       if(null != zos) zos.close();      } catch (IOException e) {       e.printStackTrace();       throw new RuntimeException(e);      }     }    }        return flag;   }      /**    * 将文件打包成ZIP压缩文件,main方法测试    * @param args    */   public static void main(String[] args) {    String sourceFilePath = "C:\\home\\lp20120301";    String zipFilePath = "C:\\home";    String fileName = "lp20120301";    boolean flag = FileToZip.fileToZip(sourceFilePath, zipFilePath, fileName);    if(flag) {     System.out.println(">>>>>> 文件打包成功. <<<<<<");    } else {     System.out.println(">>>>>> 文件打包失败. <<<<<<");    }   }  }