在http请求时将字符串转换为枚举并自动设置

enum HttpMethod {
  GET,
  POST,
  PUT,
  DELETE
}

def parse_http_method(method_str):
  if method_str == "GET":
    return HttpMethod.GET
  elif method_str == "POST":
    return HttpMethod.POST
  elif method_str == "PUT":
    return HttpMethod.PUT
  elif method_str == "DELETE":
    return HttpMethod.DELETE
  else:
    # 处理无效的字符串值，例如抛出异常或返回默认值
    return None

app.get('/api/resource', (req, res) => {
  const method = parse_http_method(req.query.method);
  
  if (method === HttpMethod.GET) {
    // 执行GET请求的逻辑
    // ...
  } else if (method === HttpMethod.POST) {
    // 执行POST请求的逻辑
    // ...
  } else {
    // 处理无效的枚举值
    // ...
  }
});