一个C#后台调用接口的例子

string url = ConfigurationSettings.AppSettings["resurl"].ToString(); 
var wc = new WebClient();
var p = "{'accountname':'tykj20180101','accountpwd':'tykj20180101','boxnumber':'" + Chest_Site.ToString() + "'}";
var buffer = System.Text.Encoding.UTF8.GetBytes(p);
string str;
try
{
str = System.Text.Encoding.UTF8.GetString(wc.UploadData(url, "POST", buffer));
}
catch
{
string script = "alert('打开失败! ');";

return JavaScript(script);
}