Question

您好，我正在尝试使用其余的Web服务，并在chtml中公开它，但是当我启动应用程序并且不理解时，我一直收到此错误。是因为缺少库或依赖项吗？

Absencecontroller：

documents

我的index.chtml：

using ProjectWeb.Models;
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Web.Mvc;
namespace ProjectWeb.Controllers
{
    public class AbsenceController : Controller
    {
        // GET: Absence
        public ActionResult Index()
        {
            HttpClient Client = new System.Net.Http.HttpClient();
            Client.BaseAddress = new Uri("http://localhost:18080/PiDev-web/rest/absence/");
            Client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            HttpResponseMessage response = Client.GetAsync("all").Result;
            if (response.IsSuccessStatusCode)
            {
                ViewBag.result = response.Content.ReadAsAsync<IEnumerable<Absence>>().Result;
                ///ViewBag.result1 = response.Content.ReadAsStringAsync().Result;
            }
            else
            {
                ViewBag.result = "error";
            }

            return View("index");
        }

        // GET: Absence/Details/5
        public ActionResult Details(int id)
        {
            return View();
        }

        // GET: Absence/Create
        public ActionResult Create()
        {
            return View();
        }

        // POST: Absence/Create
        [HttpPost]
        public ActionResult Create(FormCollection collection)
        {
            try
            {
                // TODO: Add insert logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }

        // GET: Absence/Edit/5
        public ActionResult Edit(int id)
        {
            return View();
        }

        // POST: Absence/Edit/5
        [HttpPost]
        public ActionResult Edit(int id, FormCollection collection)
        {
            try
            {
                // TODO: Add update logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }

        // GET: Absence/Delete/5
        public ActionResult Delete(int id)
        {
            return View();
        }

        // POST: Absence/Delete/5
        [HttpPost]
        public ActionResult Delete(int id, FormCollection collection)
        {
            try
            {
                // TODO: Add delete logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }
    }
}

当我通过在浏览器上按视图启动它时，出现此错误 enter image description here

当我按它时，错误是由于：

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>index</title>
</head>
<body>
    <br />
    <h3>
        @Html.ActionLink("Ajouter Absence ", "Create")
    </h3>
    <hr />
    <table class="table">
        <tr>
            <th>ID</th>
            <th>Nom</th>

            <th>Action</th>
        </tr>

        @foreach (var h in ViewBag.result)
        {
            <tr>
                <td>@h.idAbsence</td>
                <td>@h.cause</td>



            <td>
                @Html.ActionLink("Edit", "Edit", new { id = h.idAbsence }) |
                @Html.ActionLink("Details", "Details", new { id = h.idAbsence }) |
                @Html.ActionLink("Delete", "Delete", new { id = h.idAbsence })
            </td>
        </tr>
        }


    </table>
</body>
</html>

如果您熟悉此错误，请帮助我

Answer 1

在您的情况下，AggregateException可能意味着任务引发了异常。您可以在调试选项下打开“打破所有异常”，然后再次运行以找出原始异常。

哦，然后取消选择“启用我的代码”

Answer 2

我只是遇到了同样的例外；内容标题包含Content-Type = application / json; charset = ISO-8859-1

response.Content.ReadAsStringAsync（）工作正常，并得到我的变音符号'é'

但是 response.Content.ReadAsAsync >（）只是抛出System.AggregateException与内部异常 DecoderFallbackException：无法将索引562处的字节[E5]从指定的代码页转换为Unicode。

看起来像是Microsoft错误。解决方法是先使用ReadAsStringAsync，然后再解析json

mscorlib.dll中发生类型'System.AggregateException'的异常，但未在用户代码中处理

2 个答案: