文件压缩到zip

/** 
     * 压缩文件到zip
     * 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路径下 
     * @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 
     */  
    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 zipPath = new File(zipFilePath);
                if (!zipPath.exists()) {
                    zipPath.mkdir();
                }
                File zipFile = new File(zipFilePath + "/" + fileName);  
                if(zipFile.exists()){  
                    System.out.println(zipFilePath + "目录下存在名字为:" + fileName +"打包文件.");  
                    zipFile.delete();
                }
                    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;  
    }