public class Watermark : IHttpHandler

拼搏现实的明天。 2022-07-15 23:44 196阅读 0赞

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

namespace MyHttpHandler  
\{  
    /// <summary>  
    /// Summary description for Watermark  
    /// </summary>  
    public class Watermark : IHttpHandler  
    \{

//public void ProcessRequest(HttpContext context)  
        //\{  
        //    context.Response.ContentType = "text/plain";  
        //    context.Response.Write("Hello World");  
        //\}  
        public void ProcessRequest(HttpContext context)  
        \{  
            HttpRequest req = context.Request;  
            if (req.UrlReferrer != null && req.UrlReferrer.Host.Length > 0)  //反盗链代码判断  
            \{  
                System.Drawing.Image img = System.Drawing.Image.FromFile(context.Request.PhysicalPath);  
                System.Drawing.Graphics g = Graphics.FromImage(img);  
                //g.DrawString("三国演义", new Font("宋体", 20, FontStyle.Bold), Brushes.White, 10, 10);  
                g.DrawString(req.UrlReferrer.Host, new Font("宋体", 20, FontStyle.Bold), Brushes.White, 10, 10);  
                img.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);  
                context.Response.Flush();  
                context.Response.End();  
            \}  
            else  
            \{  
                if (req.UrlReferrer != null)  
                \{  
                    context.Response.Write(req.UrlReferrer.Host);  
                \}  
                else  
                \{  
                    context.Response.Write("您不能盗链本站图片");  
                \}  
                 
            \}  
        \}

public bool IsReusable  
        \{  
            get  
            \{  
                return true;  
            \}  
        \}  
    \}  
\}

<?xml version="1.0" encoding="utf-8"?>  
  
<configuration>  
  <configSections>  
      
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />  
  </configSections>  
  <connectionStrings>  
    <add name="DefaultConnection" connectionString="Data Source=.\\SQLEXPRESS;Initial Catalog=aspnet-MyHttpHandler-20160923172205;Integrated Security=SSPI" providerName="System.Data.SqlClient" />  
  </connectionStrings>  
  <appSettings>  
    <add key="webpages:Version" value="2.0.0.0" />  
    <add key="webpages:Enabled" value="false" />  
    <add key="PreserveLoginUrl" value="true" />  
    <add key="ClientValidationEnabled" value="true" />  
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />  
  </appSettings>  
  <system.web>  
    <httpHandlers>  
        
      <add verb="\*" path="\*.jpg" type="MyHttpHandler.Watermark"/>  
      <add verb="\*" path="\*.gif" type="MyHttpHandler.Watermark"/>  
      <add verb="\*" path="\*.png" type="MyHttpHandler.Watermark"/>  
    </httpHandlers>  
     
    <compilation debug="true" targetFramework="4.0" />  
    <authentication mode="Forms">  
      <forms loginUrl="~/Account/Login" timeout="2880" />  
    </authentication>  
    <pages>  
      <namespaces>  
        <add namespace="System.Web.Helpers" />  
        <add namespace="System.Web.Mvc" />  
        <add namespace="System.Web.Mvc.Ajax" />  
        <add namespace="System.Web.Mvc.Html" />  
        <add namespace="System.Web.Optimization" />  
        <add namespace="System.Web.Routing" />  
        <add namespace="System.Web.WebPages" />  
      </namespaces>  
    </pages>  
  </system.web>  
  <system.webServer>  
    <validation validateIntegratedModeConfiguration="false" />  
    <modules runAllManagedModulesForAllRequests="true" />  
    <handlers>  
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0\_32bit" />  
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0\_64bit" />  
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />  
      <add name="ExtensionlessUrlHandler-ISAPI-4.0\_32bit" path="\*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\\Microsoft.NET\\Framework\\v4.0.30319\\aspnet\_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />  
      <add name="ExtensionlessUrlHandler-ISAPI-4.0\_64bit" path="\*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\\Microsoft.NET\\Framework64\\v4.0.30319\\aspnet\_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />  
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="\*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />  
    </handlers>  
  </system.webServer>  
  <runtime>  
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">  
      <dependentAssembly>  
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />  
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />  
      </dependentAssembly>  
      <dependentAssembly>  
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />  
        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" />  
      </dependentAssembly>  
      <dependentAssembly>  
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />  
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />  
      </dependentAssembly>  
    </assemblyBinding>  
  </runtime>  
  <entityFramework>  
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />  
  </entityFramework>  
</configuration>

@\{  
    ViewBag.Title = "Home Page";  
\}  
@section featured \{  
    <section class="featured">  
        <div class="content-wrapper">  
            <hgroup class="title">  
                <h1>@ViewBag.Title.</h1>  
                <h2>@ViewBag.Message</h2>  
            </hgroup>  
            <p>  
                To learn more about ASP.NET MVC visit  
                <a href="[http://asp.net/mvc][http_asp.net_mvc]" title="ASP.NET MVC Website">http://asp.net/mvc</a>.  
                The page features <mark>videos, tutorials, and samples</mark> to help you get the most from ASP.NET MVC.  
                If you have any questions about ASP.NET MVC visit  
                <a href="[http://forums.asp.net/1146.aspx/1?MVC][http_forums.asp.net_1146.aspx_1_MVC]" title="ASP.NET MVC Forum">our forums</a>.  
            </p>  
        </div>  
    </section>  
\}  
<h3>We suggest the following:</h3>  
<ol class="round">  
    <li class="one">  
        <h5>Getting Started</h5>  
        ASP.NET MVC gives you a powerful, patterns-based way to build dynamic websites that  
        enables a clean separation of concerns and that gives you full control over markup  
        for enjoyable, agile development. ASP.NET MVC includes many features that enable  
        fast, TDD-friendly development for creating sophisticated applications that use  
        the latest web standards.  
        <a href="[http://go.microsoft.com/fwlink/?LinkId=245151">Learn][http_go.microsoft.com_fwlink_LinkId_245151_Learn] more…</a>  
    </li>

<li class="two">  
        <h5>Add NuGet packages and jump-start your coding</h5>  
        NuGet makes it easy to install and update free libraries and tools.  
        <a href="[http://go.microsoft.com/fwlink/?LinkId=245153">Learn][http_go.microsoft.com_fwlink_LinkId_245153_Learn] more…</a>  
    </li>

<li class="three">  
        <h5>Find Web Hosting</h5>  
        You can easily find a web hosting company that offers the right mix of features  
        and price for your applications.  
        <a href="[http://go.microsoft.com/fwlink/?LinkId=245157">Learn][http_go.microsoft.com_fwlink_LinkId_245157_Learn] more…</a>  
    </li>  
</ol>  
<img src="Images/lena.jpg"  border="0"  />  
<a href="Images/lena.jpg" >lena.jpg</a>

[http_go.microsoft.com_fwlink_LinkId_169433]: http://go.microsoft.com/fwlink/?LinkId=169433
[http_go.microsoft.com_fwlink_LinkID_237468]: http://go.microsoft.com/fwlink/?LinkID=237468
[http_asp.net_mvc]: http://asp.net/mvc
[http_forums.asp.net_1146.aspx_1_MVC]: http://forums.asp.net/1146.aspx/1?MVC
[http_go.microsoft.com_fwlink_LinkId_245151_Learn]: http://go.microsoft.com/fwlink/?LinkId=245151'%20rel=
[http_go.microsoft.com_fwlink_LinkId_245153_Learn]: http://go.microsoft.com/fwlink/?LinkId=245153'%20rel=
[http_go.microsoft.com_fwlink_LinkId_245157_Learn]: http://go.microsoft.com/fwlink/?LinkId=245157'%20rel=