C#調用外部介面（POST、GET）

在C#中調用StringBoot介面，POST請求，案例代碼：

public string HttpPost(）

{

//把用戶傳過來的數據轉成“UTF-8”的位元組流
Encoding encoding = Encoding.UTF8;
//創建一個HTTP請求
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://介面IP地址:埠號/介面路徑");     //比如：http://192.168.123.12:8080/api/post

//調用POST方法
request.Method = "POST";
request.ContentType = "application/json; charset=UTF-8";
request.Headers["Accept-Encoding"] = "gzip, deflate";

//content為body中的參數
String content = "{\"message\":\"請求成功\"," +
"\"nid\":\"0000001\"," +
"\"details\":\"員工\"," +
"\"name\":\"zhangsan"}";

byte[] buffer = encoding.GetBytes(content);
request.ContentLength = buffer.Length;
request.GetRequestStream().Write(buffer, 0, buffer.Length);

//通過Web訪問對象獲取響應內容
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
//通過響應內容流創建StreamReader對象
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("utf-8"));
//利用StreamReader就可以從響應內容從頭讀到尾，結果是String類型
var retString = reader.ReadToEnd();

 }

return retString； 結果是一個字元串類型：

GET請求，案例代碼：

public string HttpGet()
{

//把用戶傳過來的數據轉成“UTF-8”的位元組流
Encoding encoding = Encoding.UTF8;
//創建一個HTTP請求
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("介面地址");

//調用GET方法
request.Method = "GET";
request.ContentType = "application/json";
request.Headers["Accept-Encoding"] = "gzip,deflase";

request.AutomaticDecompression = DecompressionMethods.GZip;
//通過Web訪問對象獲取響應內容
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

// HttpCookie cookies = new HttpCookie("admin");  //如果有需要通過登錄實現保存cookie值的話可以加一部分
// cookies.Value = Convert.ToString(response.Headers["Set-Cookie"]); // 通過響應請求讀取帶cookie的http數據
// cookies.Expires = DateTime.Now.AddDays(1);
//  HttpContext.Current.Response.Cookies.Add(cookies);

//通過響應內容流創建StreamReader對象
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8)
//利用StreamReader從響應內容從頭讀到尾
return reader.ReadToEnd();

}