如何在MVC中将数据从MVC发布到webapi post方法

本文介绍了如何在MVC中将数据从MVC发布到webapi post方法的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在创建应用程序原型，我在尝试从C＃MVC Controller发送请求标头和正文中的数据，并创建了web api项目Post动作来处理请求。 我的代码是这样的:: MVC项目代码发布请求：

public class HomeController：Controller { public async Task< ActionResult> Index（） { VM VM = new VM（）; VM.Name =TEST Name; VM.Address =TEST地址; using（var client = new HttpClient（）） { client.BaseAddress = new Uri（http：// localhost：58297）; client.DefaultRequestHeaders.Accept.Clear（）; client.DefaultRequestHeaders.Accept.Add（new MediaTypeWithQualityHeaderValue（application / json））; client.DefaultRequestHeaders.Add（username，test）; var json = JsonConvert.SerializeObject（VM）; var content = new StringContent（json，Encoding.UTF8，application / json）; var result1 = await client.PostAsync（api / Values / Post，content）; } return View（）; } }

我在WEB API项目中的代码：

// POST API /值公共IHttpActionResult邮政（[FromBody] API.VM VM） {尝试 { HttpRequestMessage重新=新HttpRequestMessage（）; StreamWriter sw = new StreamWriter（@E：\ Applele \ txt.log，false）; var headers = re.Headers; string token =; if（headers.Contains（username）） { token = headers.GetValues（username）。First（）; } sw.WriteLine（From header+ token）; sw.WriteLine（From BODY+ vm.Name）; sw.WriteLine（From BODY+ vm.Address）; sw.WriteLine（Line2）; sw.Close（）; 返回Ok（成功）; } catch（exception ex） {返回InternalServerError（ex）; } }

我所理解的是[FromBody] API.VM vm从Http请求体获取数据，这意味着vm对象从HTTP Request body获取数据。我能够获取请求体。我无法理解如何从MVC控制器传递数据（我想传递JSON数据）并在WEB Api post方法中检索数据？ 我尝试了什么： 我使用过

client.DefaultRequestHeaders.Add（username，test） ;

在MVC项目中传递头数据和

HttpRequestMessage re = new HttpRequestMessage（）; var headers = re.Headers; string token =; if（headers.Contains（username）） { token = headers.GetValues（username）。First（）; }

用于获取数据的WEB API项目中的但是我无法获得用户名值，解决方案 无需构建具有 新的对象的

HttpRequestMessage重新= 新 HttpRequestMessage（）;

使用静态请求而不是

Request.Headers.TryGetValue（ username， out var test）;

I am creating prototype of application where in I am trying to send data in request header and body from C# MVC Controller and also created web api project Post action to process the request. My code goes like this:: MVC Project code to Post Request:

public class HomeController : Controller { public async Task<ActionResult> Index() { VM VM = new VM(); VM.Name = " TEST Name"; VM.Address = " TEST Address "; using (var client = new HttpClient()) { client.BaseAddress = new Uri("localhost:58297"); client.DefaultRequestHeaders.Accept.Clear(); client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); client.DefaultRequestHeaders.Add("username","test"); var json = JsonConvert.SerializeObject(VM); var content = new StringContent(json, Encoding.UTF8, "application/json"); var result1 = await client.PostAsync("api/Values/Post", content); } return View(); } }

My code in WEB API project :

// POST api/values public IHttpActionResult Post([FromBody]API.VM vm) { try { HttpRequestMessage re = new HttpRequestMessage(); StreamWriter sw = new StreamWriter(@"E:\Apple\txt.log", false); var headers = re.Headers; string token = ""; if (headers.Contains("username")) { token = headers.GetValues("username").First(); } sw.WriteLine("From header" + token); sw.WriteLine("From BODY" + vm.Name); sw.WriteLine("From BODY" + vm.Address); sw.WriteLine("Line2"); sw.Close(); return Ok("Success"); } catch (Exception ex) { return InternalServerError(ex); } }

What I have understood is [FromBody]API.VM vm gets data from Http request body which means vm object is getting data from HTTP Request body.I am able to get request body. I am not able to understand how do I pass data in header from MVC controller (I want to pass JSON Data) and retrieve data in WEB Api post method? What I have tried: I have used

client.DefaultRequestHeaders.Add("username","test");

in MVC project to pass header data and

HttpRequestMessage re = new HttpRequestMessage(); var headers = re.Headers; string token = ""; if (headers.Contains("username")) { token = headers.GetValues("username").First(); }

in WEB API project to get data but I am not able to get username value,

解决方案

No need to construct a new object with

HttpRequestMessage re = new HttpRequestMessage();

use static Request instead

Request.Headers.TryGetValue("username", out var test);