WebAPI的简单使用及文件传递

首先NuGet下载安装ASP.NET Web API Self Host程序包；

 

创建服务端

创建接口类：

public class ExcuteController : ApiController

编写接口函数：

        /// <summary>
        /// 接口连接测试
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        [HttpPost]
        public HttpResponseMessage Ping([FromUri] string name)
        {
            Console.WriteLine("RCV:" + name);
            return Request.CreateResponse(HttpStatusCode.OK, "OK");
        }

上传文件函数：

        /// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        [HttpPost]
        public async Task<HttpResponseMessage> Uploading([FromUri] string path)
        {
            try
            {
                if (!Directory.Exists(path))
                    Directory.CreateDirectory(path);
                var provider = new MultipartFormDataStreamProvider(path);
                await Request.Content.ReadAsMultipartAsync(provider);
                foreach (var file in provider.FileData)
                {
                    var header = file.Headers.ContentDisposition;
                    var name = header.FileNameStar ?? header.FileName;
                    var currentName = file.LocalFileName;
                    var filePath = path + name;
                    File.Move(currentName, filePath);
                    Console.WriteLine("RCV:" + filePath);
                    using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read))
                    {
                        using (StreamReader sr = new StreamReader(fs))
                        {
                            while (true)
                            {
                                string str = sr.ReadLine();
                                if (string.IsNullOrEmpty(str))
                                    break;
                                Console.WriteLine(str);
                            }
                        }
                    }
                }
                return Request.CreateResponse(HttpStatusCode.OK, "OK");
            }
            catch (Exception ex)
            {
                return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, ex);
            }
        }

开启API服务：

    public class WebAPIClass
    {
        private static HttpSelfHostServer server = null;
        public static void Start()
        {
            try
            {
                Uri address = new Uri("http://127.0.0.1:60055/");
                HttpSelfHostConfiguration con = new HttpSelfHostConfiguration(address);
                con.Routes.MapHttpRoute(
                    name: "DefaultApi",
                    routeTemplate: "{controller}/{action}/{id}",
                    defaults: new { id = RouteParameter.Optional });
                con.MaxReceivedMessageSize = int.MaxValue;

                server = new HttpSelfHostServer(con);
                server.OpenAsync().Wait();
            }
            catch (Exception ex)
            { }
            Console.WriteLine("WebAPI Start");
        }
    }

 

实现客户端调用

static HttpClient client = new HttpClient();

调用Ping函数：

        private static async Task<string> api_Ping()
        {
            string address = "http://127.0.0.1:60055/Excute/";
            address += "Ping?name=Test";
            HttpContent content = new StringContent("");
            HttpResponseMessage response = client.PostAsync(address, content).Result;
            string res = await response.Content.ReadAsStringAsync();
            return res;
        }

调用Uploading函数：

        private static async Task<string> api_Send()
        {
            string file = "D:\\123.txt";
            Console.WriteLine("SendFile:" + file);
            string address = "http://127.0.0.1:60055/Excute/";
            address += "Uploading?path=D:\\";
            var content = new MultipartFormDataContent();
            var fscon = new StreamContent(File.OpenRead(file));
            fscon.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
            content.Add(fscon, "file", "456.txt");
            HttpResponseMessage response = client.PostAsync(address, content).Result;
            string res = await response.Content.ReadAsStringAsync();
            return res;
        }

 

1.多参数：para1=val1&para2=val2...

2.把上传文件调过来就实现下载文件.