如何检查是否设置了get参数？

function checkGetParameter() {
  var urlParams = new URLSearchParams(window.location.search);
  if (urlParams.has('paramName')) {
    console.log('GET参数已设置');
  } else {
    console.log('GET参数未设置');
  }
}

String paramName = request.getParameter("paramName");
if (paramName != null && !paramName.isEmpty()) {
  System.out.println("GET参数已设置");
} else {
  System.out.println("GET参数未设置");
}

param_name = request.GET.get('paramName')
if param_name:
    print('GET参数已设置')
else:
    print('GET参数未设置')

import requests

def test_check_get_parameter():
    # 设置GET参数的情况
    response = requests.get('https://example.com/?paramName=value')
    assert response.status_code == 200
    # 其他断言...

    # 不设置GET参数的情况
    response = requests.get('https://example.com/')
    assert response.status_code == 200
    # 其他断言...