I am getting an unexpected error while running an application (Lighting-Aura) [closed]

Question

Apex code-

public class Controller_Apex {
    @AuraEnabled
    Public static string callApexmtd(){
        return 'Amit kumar';
    }

}

---

component

<aura:component >
    <aura:attribute name="Result" type="string" />
    <lightning:button label="submit" onclick="{!c.show}" />

</aura:component>

controller:

({
    show : function(component, event, helper) {
        var abc=component.get("c.callApexmtd");
        abc.setcallback(this,function(response)
        {
        var state=response.getstate();
        console.log('state :' +state);
        if(state==='success'){
            var result=response.getreturnvalue();
            console.log('result' +result);
            component.set("v.result",result);
        }
        });
    $A.enqueueAction(abc);
}
})

Application:

<aura:application extends="force.slds" >
    <c:component_apex />

</aura:application>

---

getting this error:

This page has an error. You might just need to refresh it. Unable to find action 'callApexmtd' on the controller of Capita_one:component_apex Failing descriptor: {Capita_one:component_apex}

Answer 1

Your <aura:component> does not declare a controller attribute. You must explicitly declare which Apex class is serving as controller for this component so that the runtime can create controller instances and reference the appropriate methods.