C#调用接口的简单流程

1.编写url地址

string url="http://192.168";

2.创建http请求对象

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

3.指定请求方法

request.Method="POST"/"GET"...

4.准备参数对象,将其转换为JSON格式后写入request请求中

var routingInfo = new
{
       ID = "1234",
       Name="sa"
 };
JsonSerializerSettings jsonSettings = new JsonSerializerSettings();
jsonSettings.DateFormatString = "yyyy-MM-ddTHH:mm:ss.fffZ";
var json = JsonConvert.SerializeObject(routingInfo, jsonSettings);
byte[] data = Encoding.UTF8.GetBytes(json);
request.GetRequestStream().Write(data, 0, data.Length);

5.添加头部信息

request.Headers.Add("header1", DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ss.fffZ"));
request.Headers.Add("header2", "123"); 

6.发送请求，并处理数据

try
{
 //发送请求
 HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
 //提取Body信息
 string respJson = ExtractResponseBody(resp);
 //对数据进行处理
 txt_result.Text = respJson;
}
catch (Exception ex)
{
//捕捉错误信息
txt_result.Text = ex.Message.ToString();
}