${requestScope.paramName} 与 ${param.name}
${param.name} 等价于 request.getParamter("name")
${requestScope.name} 等价于 request.getAttribute("name")
参考:https://blog.csdn.net/u011871921/article/details/41551865
${param.name} 等价于 request.getParamter("name")
${requestScope.name} 等价于 request.getAttribute("name")
参考:https://blog.csdn.net/u011871921/article/details/41551865