通过

HttpListenerResponse.CopyFrom(HttpListenerResponse) 方法

  • 参考

定义

命名空间:
System.Net
程序集:
System.Net.HttpListener.dll
程序集:
System.dll
程序集:
netstandard.dll
Source:
HttpListenerResponse.Managed.cs
Source:
HttpListenerResponse.Managed.cs
Source:
HttpListenerResponse.Managed.cs

将属性从指定的 HttpListenerResponse 复制到此响应。

public:
 void CopyFrom(System::Net::HttpListenerResponse ^ templateResponse);
public void CopyFrom (System.Net.HttpListenerResponse templateResponse);
member this.CopyFrom : System.Net.HttpListenerResponse -> unit
Public Sub CopyFrom (templateResponse As HttpListenerResponse)

参数

templateResponse
HttpListenerResponse

要复制的 HttpListenerResponse 实例。

示例

下面的代码示例演示如何通过复制模板响应来创建响应。

static string message403;
static HttpListenerResponse preMade403Response;
static void SendBadCertificateResponse(HttpListenerResponse response)
{
    if (preMade403Response == null)
    {
        // Set up an authentication error response template.
        response.StatusCode = (int)HttpStatusCode.Forbidden;
        response.StatusDescription = "403 Forbidden";
        response.ProtocolVersion = new Version("1.1");
        response.SendChunked = false;

        preMade403Response = response;
    }
    else
    {
        response.CopyFrom(preMade403Response);
    }

    // The response body cannot be saved in the template.

    StringBuilder message = new StringBuilder();
    message.Append("<HTML><BODY>");
    message.Append("<p> Error message 403: Access is denied due to a missing or invalid client certificate.</p>");
    message.Append("</BODY></HTML>");
    message403 = message.ToString();

    // Turn the error message into a byte array using the
    // encoding from the response when present.
    System.Text.Encoding encoding = response.ContentEncoding;
    if (encoding == null)
    {
        encoding = System.Text.Encoding.UTF8;
        response.ContentEncoding = encoding;
    }

    byte[] buffer = encoding.GetBytes(message403);
    response.ContentLength64 = buffer.Length;
    // Write the error message.
    System.IO.Stream stream = response.OutputStream;
    stream.Write(buffer, 0, buffer.Length);
    // Send the response.
    response.Close();
}

Private Shared message403 As String
Private Shared preMade403Response As HttpListenerResponse
Private Shared Sub SendBadCertificateResponse(ByVal response As HttpListenerResponse)
    
    If preMade403Response Is Nothing Then
        ' Set up an authentication error response template.
        response.StatusCode = Cint(HttpStatusCode.Forbidden)
        response.StatusDescription = "403 Forbidden"
        response.ProtocolVersion = New Version("1.1")
        response.SendChunked = False
    Else
        response.CopyFrom(preMade403Response) 
    End If
    
    ' The response body cannot be saved in the template.
    Dim message As New StringBuilder()
    message.Append("<HTML><BODY>")
    message.Append("<p> Error message 403: Access is denied due to a missing or invalid client certificate.</p>")
    message.Append("</BODY></HTML>")
    message403 = message.ToString()

    ' Turn the error message into a byte array using the 
    ' encoding from the response when present.
    Dim encoding As System.Text.Encoding = response.ContentEncoding
    If encoding Is Nothing Then
        encoding = System.Text.Encoding.UTF8
        response.ContentEncoding = encoding
    End If

    Dim buffer() As Byte = encoding.GetBytes(message403)
    response.ContentLength64 = buffer.Length
    ' Write the error message.
    Dim stream As System.IO.Stream = response.OutputStream
    stream.Write(buffer, 0, buffer.Length)
    ' Send the response.
    response.Close()
End Sub

注解

如果定期将许多属性从默认值更改为一组固定的新值，则使用 HttpListenerResponse 实例作为模板会很方便。 自定义模板响应一次，调用 方法基于模板响应中的属性值配置新响应， CopyFrom 而不是单独配置每个响应。

以下属性从 templateResponse 复制到当前实例。

适用于

另请参阅