Application.CFC变量不可用

Question

在application.cfc中,我定义了一个必须在整个会话中可用的变量.

<cfcomponent>
 <cfset this.applicationTimeout = createTimeSpan(0,4,0,0)>
    <cfset this.sessionManagement = true>
    <cfset this.setClientCookies  = true>
    <cfset this.sessionTimeout    = createTimeSpan(0,0,90,0)>
    <cfset this.setdomaincookies  = true>

    <cfset this.myVar = "Hello">
</cfcomponent>

我尝试了几种方法来获取.cfm中的myVar,但无济于事.

Approach 1: <cfoutput>#myVar#</cfoutput>
Approach 2: <cfoutput>#session.myVar#</cfoutput>
Approach 3: <cfoutput>#application.myVar#</cfoutput>

任何帮助,将不胜感激.

Answer 1

你混淆了Application.cfc' thissofped设置与你自己的application-scoped变量的位置.

看看Ben Nadel的Application.cfc教程.

基本上,你希望把application.myVar在OnApplicationStart():

<cfcomponent>
  <cfset this.applicationTimeout = createTimeSpan(0,4,0,0)>
  <cfset this.sessionManagement = true>
  <cfset this.setClientCookies  = true>
  <cfset this.sessionTimeout    = createTimeSpan(0,0,90,0)>
  <cfset this.setdomaincookies  = true>

  <cffunction name="OnApplicationStart">
    <cfset application.myVar = "Hello">
  </cffunction>
</cfcomponent>

然后你应该能够在你的应用程序中引用它application.myVar.