Problem calling a method from visualforce

Question

I want the User Id to be displayed in a visualforce page

 public class getUser{

   public void classGetID()
   {
     String s=UserInfo.getUserId();
   }
 }

Following is my visualforce page..

 <apex:page Controller="getUser" >

    <apex:outputText value="!classGetID"></apex:outputText>

 </apex:page>

Please guide me how do get the user ID.

Answer 1

First, You need to return the Id in your method (your method is void which means it won't return anything if you call it) - like this:

public Id classGetId()
{
    return Userinfo.getUserId();
}

Then in your page you need to call this method (your syntax is not correct) like:

<apex:outputText value="{!classGetID}"></apex:outputText>

Answer 2

You can use the User global variable, which would be quite straight forward

 <apex:outputText value=" {!$User.Id}"/>