code: public static String readFile(String path) throws IOException {
          if (path.startsWith(ValueConsts.CLASSPATH_PREFIX)) {
              return read(FileExecutor.class.getResourceAsStream(path.substring(ValueConsts.CLASSPATH_PREFIX.length())));
          }
          return readFile(new File(path));
      }
docs: 读取文件
  
  @param path 路径
  
  @return {@link String}
  
  @throws IOException 异常