System.Net.WebClient - 使用包含单引号的编码字符串调用 UploadValues 异常

Question

使用包含单引号的编码字符串调用 UploadValues 时出现以下异常：

An exception of type 'System.Net.WebException' occurred in System.dll but was not handled in user code

Additional information: The remote server returned an error: (500) Internal Server Error.

代码是运行 ASP.NET MVC 网站的以下操作：

   public class HomeController : Controller
    {
        public string Index()
        {
            var welcomeMessage = string.Empty;

            using (var client = new WebClient())
            {
                var encodedName = HttpUtility.HtmlEncode("Dave's");
                var nameValue = new NameValueCollection { { "name", encodedName } };

                var result = client.UploadValues("http://localhost:54011/Services/GetString", nameValue);

                welcomeMessage = System.Text.Encoding.UTF8.GetString(result);
            }

            return welcomeMessage;
        }
}

GetString 操作定义如下：

public class ServicesController : Controller
{
    public string GetString(string name)
    {
        return "Hello " + name;
    }
}

如果我删除单引号，方法就会成功。如何将带引号的字符串传递给 UploadValues？

Answer 1

您正在使用 HtmlEncode，但该值应该是 URL 编码的，因为它将作为 application/www-form-urlencoded 内容上传.

请尝试使用 HttpUtility.UrlEncode。

System.Net.WebClient - 使用包含单引号的编码字符串调用 UploadValues 异常

System.Net.WebClient - exception calling UploadValues with encoded string containing single quote

c#

asp.net-mvc

webclient