Salesforce 错误:未知函数getHello。检查拼写

Salesforce 错误:未知函数getHello。检查拼写,salesforce,apex-code,visualforce,Salesforce,Apex Code,Visualforce,我正在编写visualforce页面代码: <apex:page controller="AuthSubController" showHeader="false"> <head><title>Hello World</title> <meta name="google-site-verification" content="XCzApP9fdbR3auxPHd3-X0g7uCNbrXZDQU_jm5GHXLI" /> </hea

我正在编写visualforce页面代码:

<apex:page controller="AuthSubController" showHeader="false">
<head><title>Hello World</title>
<meta name="google-site-verification" content="XCzApP9fdbR3auxPHd3-X0g7uCNbrXZDQU_jm5GHXLI" />
</head>
     <apex:outputPanel rendered="{!$CurrentPage.parameters.token != null}"> 

The one time use token is :<b>{!$CurrentPage.parameters.token}</b>
            <br />
Record to update is {!$CurrentPage.parameters.id}
<br />
URL to update is {! getHello($CurrentPage.parameters.url)}


     </apex:outputPanel>

</apex:page>
我在控制器类中定义了
getHello
。有人能告诉我为什么会出现此错误吗?

更改:

要更新的URL是{!getHello($CurrentPage.parameters.URL)}

致:

要更新的URL是{!您好($CurrentPage.parameters.URL)}


好的。

好的。我通常做的是公共字符串hello{get;set;}或公共字符串hello{get{…}set{…}
public class AuthSubController {
    public string getHello(String x) {
        return x.substring(3);
    }
}