1,c#仿get
//对url发出请求
WebRequest webr1 = WebRequest.Create(webapi2);
//HttpWebRequest httpwebr1 = WebRequest.CreateHttp(webapi);
//获取设置请求头内容
WebHeaderCollection webr2 = webr1.Headers;
//获取设置请求数据的内容类型
string str1 = webr1.ContentType;
//获取设置协议方法
string str2 = webr1.Method;
Uri str3 = webr1.RequestUri;
////获取从获取从服务器检索的数据
//WebResponse wrs = webr1.GetResponse();
//Stream strm = webr1.GetRe