本文分两部分：
第一部分：搭建本地ASP.Net Core Web API环境
自己建立api接口可以方便本机进行测试
在VisualStudio新建项目
点击下一步，不用配置HTTPS,我用的是.NET8环境，根据自己实际需要去进行选择
创建API方法并使用swagger
这是项目自带的文件，我们删除重新创建自己实际需要的控制器
右键新建MVC控制器
新建一个api方法，把控制器上的路径补充完整，方法的请求方式根据实际业务来，这里用get请求
[Route("api/[controller]/[action]")]然后下载swagger组件，下载这三个
下载完毕后在StartUp文件去进行注册，没有文件的话新建一个
public class Startup{public Startup(IConfiguration configuration) {Configuration = configuration;}public IConfiguration Configuration { get; }public void ConfigureServices(IServiceCollection services){services.AddControllers(); // 添加 MVC 控制器服务services.AddSwaggerGen(c => { c.SwaggerDoc("v1", new OpenApiInfo { Title = "ID Build Api", Version = "v1" }); });//使用Swagger}public void Configure(IApplicationBuilder app, IWebHostEnvironment env){if (env.IsDevelopment()){app.UseDeveloperExceptionPage();}app.UseRouting();//手动新增swagger注册app.UseSwagger();app.UseEndpoints(endpoints =>{endpoints.MapControllers(); // 配置控制器路由});app.UseSwaggerUI(c =>{c.SwaggerEndpoint( "v1/swagger.json","ID Build V1");//使用swagger交互UI模式});}}在LaunchSettings.json文件中去观察Http和Express中的LaunchUrl是否更改成swagger,没有更改的话手动更改
在TestController中输入下列代码，Get和post是方便上位机客户端进行get或post获取响应代码，Test是自己手动运行程序进行简单测试一下
[HttpGet]public IActionResult Get(){var result = new{Message = "GET request received successfully!",Time = DateTime.Now};return Ok(result);}[HttpGet]public string Test(){return "返回Test";}[HttpPost]public ActionResult<TestModel> Post([FromBody] TestModel model){if (model == null){return BadRequest("Invalid input data."); // 返回 400 Bad Request}model.sum = model.num1 + model.num2;// 返回成功结果return Ok(model); // 返回 200 OK，并附带数据}
点击execute获取测试值
第二部分：搭建客户端winfom
新建项目=》选择Windows窗体，填写你的项目名称
在from窗体中添加一个button按钮，双击进去自动生成Click事件
这是我封装好的请求代码
/// <summary>/// /// </summary>/// <param name="url"></param>/// <returns></returns>/// <exception cref="HttpRequestException"></exception>public static async Task<string> GetAsync(string url){using var client = new HttpClient();try{// 发送 GET 请求HttpResponseMessage response = await client.GetAsync(url);response.EnsureSuccessStatusCode(); // 确保返回成功// 读取响应内容string content = await response.Content.ReadAsStringAsync();return content;}catch (Exception ex){throw new HttpRequestException($"GET request failed: {ex.Message}", ex);}}/// <summary>/// 封装post请求代码/// </summary>/// <typeparam name="TResult">根据实际需要建立对应的数据模型类</typeparam>/// <param name="url"></param>/// <param name="data"></param>/// <returns></returns>public static TResult Post<TResult>(string url, object data){using HttpClient client = new HttpClient();try{// 序列化数据为 JSONvar jsonData = JsonConvert.SerializeObject(data);// 创建请求内容HttpContent content = new StringContent(jsonData, Encoding.UTF8, "application/json");// 发送 POST 请求HttpResponseMessage res = client!.PostAsync(url, content).Result;// 检查响应是否成功if (res.StatusCode == System.Net.HttpStatusCode.OK){string resMsgStr = res.Content.ReadAsStringAsync().Result;var result = JsonConvert.DeserializeObject<TResult>(resMsgStr);return result!;}else{MessageView.Ins.MessageBoxShow(res.StatusCode.ToString(), 3);return default!;}}catch (Exception ex){MessageView.Ins.MessageBoxShow(ex.Message, 3);return default!;}}/// <summary>/// 发送http请求/// </summary>/// <param name="url">目标服务器的地址</param>/// <param name="method">请求方式</param>/// <param name="data">请求体数据</param>/// <param name="isJson">请求体是否为json格式</param>/// <returns></returns>public static async Task<string> Send(string url, HttpType method = HttpType.GET, string data = "", bool isJson = false){using HttpClient client = new HttpClient();try{HttpRequestMessage request = new HttpRequestMessage{Method = new HttpMethod(method.ToString()),RequestUri = new Uri(url)};// 如果是 POST 或 PUT，写入请求体if (method == HttpType.POST || method == HttpType.PUT){request.Content = new StringContent(data,Encoding.UTF8,isJson ? "application/json" : "application/x-www-form-urlencoded");}// 发送请求并获取响应HttpResponseMessage response = await client.SendAsync(request);// 确保请求成功response.EnsureSuccessStatusCode();// 读取响应内容string result = await response.Content.ReadAsStringAsync();return result;}catch (Exception ex){// 捕获异常并返回错误信息return $"Error: {ex.Message}";}}在button事件中添加代码调用
var model = new TestModel { num1 = 1 ,num2 = 2};var data = Commons.Post<TestModel>("http://localhost:5069/api/test/Post", model);var data2 = await Commons.GetAsync("http://localhost:5069/api/test/Get");string jsonData = "{ \"num1\": 20, \"num2\": 30 }";string response = await Commons.Send("http://localhost:5069/api/test/Post", HttpType.POST, jsonData,true);AddLog.Info(response);TestModel是自己在客户端建立的数据模型类，服务端api也是需要建立相应的model类内容一致
最后可以得到api服务器返回的结果
