ASP.NET Web API调用时出现: 基础连接已经关闭: 发送时发生错误

Z时代
2024-01-10
分类：技术分享

以下是调用API的页面, 用的是Razor的写法, 我测试了一下是在执行Stream dataStream = client.OpenRead(GetURL); 这句话的时候报错的, 错误信息是"基础连接已经关闭: 发送时发生错误", 但是我单独打开API是没有问题的, API地址是: https://webapi20200813111324....{parameter}, 后面的{parameter}可以是任何字符串.

@using Newtonsoft.Json;
@{
bool isConnectFailed = false;
string errorInfo = "error";
List<string> cards = new List<string>();
var playerName = Request["PlayName"];
if (IsPost)
{
string GetURL = "https://webapi20200813111324.azurewebsites.net/api/HandOfCards/" + playerName;
WebClient client = new WebClient();
try
{
Stream dataStream = client.OpenRead(GetURL);
StreamReader reader = new StreamReader(dataStream);
var results = JsonConvert.DeserializeObject<dynamic>(reader.ReadLine());
reader.Close();
foreach (var item in results)
{
cards.Add((string)item.imageLink);
}
}
catch (System.Net.WebException e)
{
isConnectFailed = true;
errorInfo = e.Message;
}
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<style>
body {
font-family: Verdana;
margin-left: 50px;
margin-top: 50px;
}
div {
border: 1px solid black;
width: 800px;
margin: 1.2em;
padding: 1em;
}
</style>
<title>BensCards: Deal yourself a hand.</title>
</head>
<body>
@if (IsPost)
{
<label id="labelGoal">Which player has the best hand.</label>
<br />
<div>
@if (isConnectFailed)
{
<p><label id="labelPlayer1">Web API Connection failed, Message: @errorInfo</label></p>
}
else
{
<p><label id="labelPlayer1">Player1: @playerName</label></p>
foreach (string card in cards)
{
<img width="75" height="100" alt="cardImage" src="https://deckofcards20200804.blob.core.windows.net/carddeck/@card" />
}
}
</div>
<label id="errorMessageLabel" />
}
else
{
<label id="labelGoal">
Enter the players name and deal the cards.
</label>
<br /><br />
<form method="post">
<div>
<p>Player 1: @Html.TextBox("PlayerName")</p>
<p><input type="submit" value="Deal Cards" class="submit" /></p>
</div>
</form>
}
</body></html>