java打包文件夹为zip文件

 //待压缩的文件目录
 String sourceFile=sourceFilePath+"\\"+userName;
 //存放压缩文件的目录
 String zipFilePath = sourceFilePath;
 //zip文件名字,不加zip 方法里面有
 fileName=“****”

 //直接粘贴
 public Object fileZip(String sourceFilePath,String zipFilePath,String fileName){
        String flag = "";
        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
                            //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 = "";
                    }
                }
            } 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;
    }