WCF 构建REST Service 跨域访问解决方法

深藏阁楼爱情的钟 2022-02-05 12:36 250阅读 0赞

服务端是用vs2013里WCF做的REST风格的web service。

客户端是用jquery+ajax访问web service。

参考 [http://www.topwcftutorials.net/2014/01/crud-wcf-restful-service.html。][http_www.topwcftutorials.net_2014_01_crud-wcf-restful-service.html]

调试中发生跨域访问错误，试了很多方法，终于解决。

参考 [https://www.codeproject.com/Articles/845474/Enabling-CORS-in-WCF。][https_www.codeproject.com_Articles_845474_Enabling-CORS-in-WCF]

解决方法就是增加两个文件， Global.asax 和 Global.asax.cs。

Global.asax 就一句话：

<%@ Application Codebehind=“Global.asax.cs” Inherits=“Wcf.App.Global” Language=“C\#” %>

Global.asax.cs 内容如下：  
using System;  
using System.Collections.Generic;  
using System.Linq;  
using [System.Web][];  
using System.Web.Security;  
using System.Web.SessionState;

namespace Wcf.App
    {
     public class Global : System.Web.HttpApplication
    	 {
    
        protected void Application_Start(object sender, EventArgs e)
        {
    
        }
    
        protected void Session_Start(object sender, EventArgs e)
        {
    
        }
    
        protected void Application_BeginRequest(object sender, EventArgs e)
        {
            //HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "http://localhost");
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");
            if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
            {
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "POST, PUT, DELETE");
    
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");
                HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");
                HttpContext.Current.Response.End();
            }
        }
    
        protected void Application_AuthenticateRequest(object sender, EventArgs e)
        {
    
        }
    
        protected void Application_Error(object sender, EventArgs e)
        {
    
        }
    
        protected void Session_End(object sender, EventArgs e)
        {
    
        }
    
        protected void Application_End(object sender, EventArgs e)
        {
    
        }
    }
    }

[http_www.topwcftutorials.net_2014_01_crud-wcf-restful-service.html]: http://www.topwcftutorials.net/2014/01/crud-wcf-restful-service.html%E3%80%82
[https_www.codeproject.com_Articles_845474_Enabling-CORS-in-WCF]: https://www.codeproject.com/Articles/845474/Enabling-CORS-in-WCF%E3%80%82
[System.Web]: http://System.Web