asp.net – Handler类代码没有触发

发布时间：2020-12-16 03:23:19 所属栏目：asp.Net 来源：网络整理

导读：我正在学习在ASP.NET中使用Handler. 我添加了Web Form并将扩展名更改为“* .bspx”. 我添加了一个类,代码如下： namespace Experiments1 { public class UniqueHandler: IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response

我正在学习在ASP.NET中使用Handler.

我添加了Web Form并将扩展名更改为“* .bspx”.

我添加了一个类,代码如下：

namespace Experiments1
    {

    public class UniqueHandler: IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";

            if (context.Request.RawUrl.Contains(".bspx"))
            {
                string newUrl = context.Request.RawUrl.Replace(".bspx",".aspx");
                context.Server.Transfer(newUrl);
            }

        }

        public bool IsReusable
        {
            get { return false; }
        }
    }
}

我在web.config文件中添加了以下行：

<system.webServer>
    <handlers>
      <add verb="*" path="*.bspx" name="Uniquehandler"/>
    </handlers>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>

页面“default.aspx”有一个链接按钮,其中设置了回发URL以打开上面的页面.

<asp:LinkButton ID="lnk" PostBackUrl="~/DifferentPage.bspx" runat="server" Text="Bspx"></asp:LinkButton>

但是当我点击上面的链接按钮时,它显示错误：

The HTTP verb POST used to access path '/DifferentPage.bspx' is not allowed.

**已编辑**
Web.Config代码

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application,please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <connectionStrings>
    <add name="ApplicationServices" connectionString="data source=.SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true" providerName="System.Data.SqlClient"/>
    <add name="LearnConnectionString" connectionString="Data Source=.;Initial Catalog=Learn;Integrated Security=True" providerName="System.Data.SqlClient"/>
    <add name="LearnConnectionString2" connectionString="Data Source=.sqlexpress;Initial Catalog=Learn;Integrated Security=True" providerName="System.Data.SqlClient"/>
  </connectionStrings>
  <system.web>
    <compilation debug="true" targetFramework="4.0">
      <assemblies>
        <add assembly="System.Design,Version=4.0.0.0,Culture=neutral,PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Web.Extensions.Design,PublicKeyToken=31BF3856AD364E35"/>
        <add assembly="System.Windows.Forms,PublicKeyToken=B77A5C561934E089"/>
      </assemblies>
    </compilation>
    <authentication mode="Forms">
      <forms loginUrl="~/Account/Login.aspx" timeout="2880"/>
    </authentication>
    <membership>
      <providers>
        <clear/>
        <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/"/>
      </providers>
    </membership>
    <profile>
      <providers>
        <clear/>
        <add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/"/>
      </providers>
    </profile>
    <roleManager enabled="false">
      <providers>
        <clear/>
        <add name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" connectionStringName="ApplicationServices" applicationName="/"/>
        <add name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" applicationName="/"/>
      </providers>
    </roleManager>
  </system.web>
  <system.webServer>
    <handlers>
      <add verb="*" path="*.bspx" type="UniqueHandler,App_Code" name="Uniquehandler"/>
    </handlers>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

解决方法

您错过了webconfig文件中的类型,

<add verb="*" path="*.bspx" type="UniqueHandler,App_Code" name="Uniquehandler"/>

这里的“App_Code”代码表示您的类文件夹名称.

编辑：

这是我的解决方案文件详情

这是我在App-data中的uniqueHanlder类代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

/// <summary>
/// Summary description for UniqueHandler
/// </summary>
public class UniqueHandler : IHttpHandler
{
    public UniqueHandler()
    {
        //
        // TODO: Add constructor logic here
        //
    }

    public bool IsReusable
    {
        get { return false; }
    }

    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/plain";

        if (context.Request.RawUrl.Contains(".bspx"))
        {
            string newUrl = context.Request.RawUrl.Replace(".bspx",".aspx");
            context.Server.Transfer(newUrl);
        }
    }
}

这是我的default.aspx代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>   
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:TextBox ID="UsernameTextBox" Text="xxx" runat="server"></asp:TextBox>           
          <asp:LinkButton ID="lnk" PostBackUrl="~/Default2.bspx" runat="server" Text="Bspx"></asp:LinkButton>
        </div>
    </form>
</body>
</html>

这是我的web.config文件代码

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application,please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.5"/>
    <httpRuntime targetFramework="4.5"/>
  </system.web>
  <system.webServer>
    <handlers>
      <add verb="*" path="*.bspx" **type="UniqueHandler,App_Code"** name="Uniquehandler"/>
    </handlers>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

（编辑：李大同）

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