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1.WinFrom调用webapi接口方法

最近项目要在winfrom项目中调用webAPI，故在网上查找资料，找到了一个WinFrom调用webapi接口的通用方法，关键代码：

 #region WinFrom调用webapi接口通用方法private async Task<string> InvokeWebapi(string url, string api, string type, Dictionary<string, string> dics){string result = string.Empty;HttpClient client = new HttpClient();client.DefaultRequestHeaders.Add("authorization", "Basic YWRtaW46cGFzc3dvcmRAcmljZW50LmNvbQ==");//basic编码后授权码client.BaseAddress = new Uri(url);client.Timeout = TimeSpan.FromSeconds(510);if (type.ToLower() == "put"){HttpResponseMessage response;//包含复杂类型if (dics.Keys.Contains("input")){if (dics != null){foreach (var item in dics.Keys){api = api.Replace(item, dics[item]).Replace("{", "").Replace("}", "");}}var contents = new StringContent(dics["input"], Encoding.UTF8, "application/json");response = client.PutAsync(api, contents).Result;if (response.IsSuccessStatusCode){result = await response.Content.ReadAsStringAsync();return result;}return result;}var content = new FormUrlEncodedContent(dics);response = client.PutAsync(api, content).Result;if (response.IsSuccessStatusCode){result = await response.Content.ReadAsStringAsync();return result;}}else if (type.ToLower() == "post"){var content = new FormUrlEncodedContent(dics);HttpResponseMessage response = client.PostAsync(api, content).Result;if (response.IsSuccessStatusCode){result = await response.Content.ReadAsStringAsync();return result;}}else if (type.ToLower() == "get"){HttpResponseMessage response = client.GetAsync(api).Result;if (response.IsSuccessStatusCode){result = await response.Content.ReadAsStringAsync();return result;}}else{return result;}return result;}#endregion   

2.应用实例

创建一个名为callWebAPI的窗体项目，在窗体加两个textBox。下面实例主要是调用webAPI的方法获取数据存为json格式，然后将json格式的数据从文件中读取出来。调用代码如下：

 private async void callWebAPI_Load(object sender, EventArgs e){#region 调用webapi并存为json格式文件string api = "";string url = "http://10.3.11.2/SimploWebApi/api/LASER_System/LASER_GetLineShowConfig?typeString=2";Dictionary<string, string> dics = new Dictionary<string, string>();Task<string> task = InvokeWebapi(url, api, "post", dics);string result = task.Result;//textBox1.Text = result;if (result != null){JObject jsonObj = null;jsonObj = JObject.Parse(result);DataInfo info = new DataInfo();info.statusCode = Convert.ToInt32(jsonObj["statusCode"]);//info.message = jsonObj["message"].ToString();if (info.statusCode == 0){JArray jlist = JArray.Parse(jsonObj["Data"].ToString());string json = JsonConvert.SerializeObject(jlist, Formatting.Indented);//File.WriteAllText("Standard.json", json);//将数据存为json格式for (int i = 0; i < jlist.Count; ++i)  //遍历JArray  {                     JObject tempo = JObject.Parse(jlist[i].ToString());textBox1.Text += tempo["line"].ToString();                    }}}#endregion#region  获取json文件数据// 读取JSON文件内容string jsonFilePath = "Standard.json";string jsons = File.ReadAllText(jsonFilePath);// 反序列化JSON到对象Standard standard = JsonConvert.DeserializeObject<Standard>(jsons);textBox2.Text = standard.line + "," + standard.linePlace;#endregion}

以上实例还需建立DataInfo类和Standard类

DataInfo类

DataInfo info = new DataInfo();

 public class DataInfo{public int statusCode { get; set; }public string message { get; set; }     }

Standard类

 Standard standard = JsonConvert.DeserializeObject<Standard>(jsons);

  public class Standard{public string line { get; set; }public string linePlace { get; set; }     }

以上实例用了json，所以需要引用Newtonsoft.Json.dll（具体引用方法见以前文章）

using Newtonsoft.Json;

Standard.json文件

{"line": "B10","linePlace": "CQ_1", }

补充：

get的传参方式

            string api = "";string sWo = "1025";          string url = "http://10.1.1.1/api/MES/API_GetLaserAOIParm?sWo=" + sWo + "";Dictionary<string, string> dics = new Dictionary<string, string>();          Task<string> task = InvokeWebapi(url, api, "post", dics);string result = task.Result;

post的传参方式

            string api = "";string sWo = "1025";          string url = "http://10.1.1.1/api/MES/API_GetLaserAOIParm";Dictionary<string, string> dics = new Dictionary<string, string>();dics = new Dictionary<string, string>{{ "sWo", sWo },            };Task<string> task = InvokeWebapi(url, api, "post", dics);string result = task.Result;

参考文献：WinForm如何调用WebApi接口_c# weiapi winform-CSDN博客

结语：本文主要记录WinFrom调用webapi接口方法及其应用实例，以上代码是本人亲测可用的，在此记录，方便查阅。