code: public static void readLines(File file, Charset charset, LineHandler lineHandler) throws IORuntimeException {
  		FileReader.create(file, charset).readLines(lineHandler);
  	}
docs: 按行处理文件内容
  
  @param file 文件
  @param charset 编码
  @param lineHandler {@link LineHandler}行处理器
  @throws IORuntimeException IO异常