向文件中写入内容

/**
	 * 向文件中写入内容
	 * @param file
	 * @param content
	 * @param addFlag
	 * @throws UtilException
	 */
	public static void addContentToFile(File file,String content,boolean addFlag) throws UtilException{
		 try {
			  // SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss ");
			  // String contents = sdf.format(new Date()) + content + "\r\n";
			   RandomAccessFile raf = new RandomAccessFile(file, "rw");
			   if(addFlag){
				   raf.seek(raf.length());
			   }else{
				   raf.seek(0);
			   }
			   raf.write(content.getBytes("UTF-8"));
			   raf.close();
			  } catch (FileNotFoundException e) {
				  throw new UtilException(e);
			  } catch (IOException e) {
				  throw new UtilException(e);
			  }
	}