关于C# winform怎么调用webapi来获取到json数据
C/S系统也可以和B/S系统一样实现“前后端分离”,那这样写winform就相当于纯粹的前端页面了,然后再单独部署一个webapi项目,通过api调用数据库进行数据的操作,有利于维护和数据安全性的提高,那么winform怎么去调用api接口呢,写了一个demo,大家借鉴一下哈,本人才疏学浅,有不足和错误请指出:
winform界面就不设计了,仅仅是为了测试是否调用到api,直接在创建的类库中写一个方法:
/// <summary> /// 调用api返回json /// </summary> /// <param name="url">api地址</param> /// <param name="jsonstr">接收参数</param> /// <param name="type">类型</param> /// <returns></returns> public static string HttpApi(string url, string jsonstr, string type) { Encoding encoding = Encoding.UTF8; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);//webrequest请求api地址 request.Accept = "text/html,application/xhtml+xml,*/*"; request.ContentType = "application/json"; request.Method = type.ToUpper().ToString();//get或者post byte[] buffer = encoding.GetBytes(jsonstr); request.ContentLength = buffer.Length; request.GetRequestStream().Write(buffer, 0, buffer.Length); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8)) { return reader.ReadToEnd(); } }
然后再winform界面的事件中调用该方法:
private void button3_Click(object sender, EventArgs e) { string url = "...(此处为api端口)/api/VisitorInfo/GetEndVisitorInfoList"; var str = ApiHelper.HttpApi(url, "{}", "get"); }
本地运行后变量str接收数据格式如下: