2015-04-06 67 views
0

我有一个.Net 4.5.2 WebApi 2.2 REST服务。运行IIS 7.5的Windows 7机器。它没有多大作用,但返回当前日期/时间。当在IIS中承载的,我得到的是这样的响应头:WebApi 2.2 IIS 7.5设置max-age

HTTP/1.1 200 OK 
Cache-Control: max-age=60 
Content-Length: 58 
Content-Type: application/json; charset=utf-8 
ETag: "c664145c-6923-44b6-b3fb-ff7e50259b44" 
Server: Microsoft-IIS/7.5 
ApplicationDate: Test with date 4/3/2015 3:18:08 PM 
X-AspNet-Version: 4.0.30319 
X-Powered-By: ASP.NET 
Date: Fri, 03 Apr 2015 19:18:10 GMT 

{"messages":[],"result":"All is well 4/3/2015 3:18:07 PM"} 

如果我把它称为第二次,我看到:

HTTP/1.1 200 OK 
Cache-Control: max-age=60 
Content-Length: 58 
Content-Type: application/json 
ETag: "c664145c-6923-44b6-b3fb-ff7e50259b44" 
Server: Microsoft-IIS/7.5 
X-AspNet-Version: 4.0.30319 
X-Powered-By: ASP.NET 
Date: Fri, 03 Apr 2015 19:27:25 GMT 

{"messages":[],"result":"All is well 4/3/2015 3:18:07 PM"} 

我的自定义页眉(ApplicationDate)已经一去不复返了,时间没有改变。关键可能是Cache-Control:max-age = 60。我不知道它来自哪里!

如果我运行它“自我托管”,同样的代码...我看到这一点:

HTTP/1.1 200 OK 
Content-Length: 58 
Content-Type: application/json; charset=utf-8 
Server: Microsoft-HTTPAPI/2.0 
ApplicationDate: Test with date 4/3/2015 3:35:31 PM 
Date: Fri, 03 Apr 2015 19:35:31 GMT 

{"messages":[],"result":"All is well 4/3/2015 3:35:30 PM"} 

东西在IIS管道设置最大年龄。 (顺便说一句,用SoapUI和Fiddler测试,没有浏览器问题,使事情变得复杂)

我已经尝试禁用IIS OutputCache模块。我验证了使用FailedReqLogFiles:

OUTPUT_CACHE_LOOKUP_END 结果4 结果CACHING_DISABLED

当我改变缓存控制标头中的代码,我看到自托管版本的变化,但一些覆盖头在IIS版本回到最大年龄= 60。

HTTP/1.1 200 OK 
Cache-Control: max-age=60 
Pragma: no-cache 
Content-Length: 58 
Content-Type: application/json; charset=utf-8 
ETag: "3ce2e8b6-4891-496e-8bb7-087590239d6b" 
Server: Microsoft-IIS/7.5 
ApplicationDate: Test with date 4/3/2015 3:49:19 PM 
X-AspNet-Version: 4.0.30319 
X-Powered-By: ASP.NET 
Date: Fri, 03 Apr 2015 19:49:19 GMT 

{"messages":[],"result":"All is well 4/3/2015 3:49:19 PM"} 

这里的控制器:

/// <summary> 
/// Get "REST" status 
/// </summary> 
/// <returns></returns> 
[ActionName("GetStatusDate")] 
[Route("GetStatusDate")] 
public HttpResponseMessage GetStatusDate() 
{ 
    CommonResponse<string> response = new CommonResponse<string>(); 
    response.Result = "All is well " + DateTime.Now; 
    HttpResponseMessage responseMessage = Request.CreateResponse(HttpStatusCode.OK, response); 

    responseMessage.Headers.Add("ApplicationDate", "Test with date " + DateTime.Now); 

    responseMessage.Headers.Remove("Cache-Control"); 

    responseMessage.Headers.CacheControl = new CacheControlHeaderValue() 
              { 
               MaxAge = TimeSpan.FromSeconds(11), 
               NoCache = true, 
               Private = true 
              }; 

    responseMessage.Headers.Add("Pragma","no-cache"); 

    return responseMessage; 

} 

什么是设置最大年龄?

感谢,

肖恩

回答

0

所以,我应该张贴问题之前,等待一个小时....原来的问题是,CacheOutputAttribute(OutputCache.V2)不仅在具体设置资源,但已被添加到全局过滤器集合中。由于它继承自FilterAttribute,IActionFilter,它作为一个全局过滤器运行良好。这就是为什么所有的电话都被缓存了。它把这个项目扯到没有找到问题。

肖恩

+0

所以,你做了什么来做到这一点? – Coder 2017-01-18 07:00:36