code: public void store(String absolutePath) throws IORuntimeException{
  		Writer writer = null;
  		try {
  			writer = FileUtil.getWriter(absolutePath, charset, false);
  			super.store(writer, null);
  		} catch (IOException e) {
  			throw new IORuntimeException(e, "Store properties to [{}] error!", absolutePath);
  		} finally {
  			IoUtil.close(writer);
  		}
  	}
docs: 持久化当前设置，会覆盖掉之前的设置
  
  @param absolutePath 设置文件的绝对路径
  @throws IORuntimeException IO异常，可能为文件未找到