Question

我用的时候 Response.Cache.SetCacheability(HttpCacheability.Private)和Response.Cache.VaryByHeaders["someValue"] = true; 响应中的Vary标题缺少！

Response.Cache.SetCacheability(HttpCacheability.Public)和Response.Cache.VaryByHeaders["someValue"] = true;存在否问题。它返回Vary：someValue

使用web.config和控制器属性时的相同问题

添加name =＆＃34; myCacheProfile＆＃34;启用=＆＃34;真＆＃34;持续时间=＆＃34; 3600＆＃34;的VaryByParam =＆＃34; *＆＃34; varyByHeader =＆＃34; someValue中＆＃34;位置=＆＃34;下游＆＃34;工作并发送Vary标题

添加name =＆＃34; myCacheProfile＆＃34;启用=＆＃34;真＆＃34;持续时间=＆＃34; 3600＆＃34;的VaryByParam =＆＃34; *＆＃34; varyByHeader =＆＃34; someValue中＆＃34;位置=＆＃34;客户＆＃34;不起作用！

Answer 1

如果您想使用自定义值，则必须在Global.asax.cs文件中执行覆盖：

public override string GetVaryByCustomString(HttpContext context, string custom)
        {
            if (!string.IsNullOrEmpty(custom) && context != null && context.Request != null)
            {                
                HttpRequest req = context.Request;

                switch (custom.ToUpper())
                {
                    case "someValue":
                        return req.someValue;
                    case "USER-AGENT":
                        if (req.UserAgent != null && req.Browser != null)
                            return req.UserAgent.ToString() + "-" + req.Browser.IsMobileDevice.ToString() + "-" + req.Browser.Platform;
                        else
                            return base.GetVaryByCustomString(context, custom);
                    default:
                        return base.GetVaryByCustomString(context, custom);
                }
            }
            return base.GetVaryByCustomString(context, custom);
        }

响应中缺少MVC asp.net OutputCache Vary标头

1 个答案: