Hi,
I am trying to create custom interceptor which implements SessionAware
interface to handle session management logic so that cross-cutting concern is
not implemented Action class which is concentrating on core concern.
setSession() method is not called even after implementing sessionAware and even
in struts website , suggestions given to implement in action class and not in
Interceptor.
I went through some question in SO and it suggested to add servletconfig
interceptor in struts.xml .But I don't know why to add it even though it's
already part of default stack.
Struts.xml file :
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd";>
<struts>
<constant name="struts.devMode" value="true" />
<package name="default" extends="struts-default">
<interceptors>
<interceptor name="sessionmanage"
class="com.contacts.interceptors.SessionInterceptor" />
<interceptor-stack name="appStack">
<interceptor-ref name="defaultStack"/>
<interceptor-ref name="sessionmanage"/>
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="appStack"></default-interceptor-ref>
<action name="">
<result>/signup.jsp</result>
</action>
<action name="signup">
<result>/signup.jsp</result>
</action>
<action name="signup_action" class="com.contacts.actions.SignupAction"
method="execute">
<result name="input">/signup.jsp</result>
<result>/succcess.jsp</result>
</action>
</package>
</struts>
SessionInterceptor.java
package com.contacts.interceptors;
import java.util.Map;
import org.apache.struts2.dispatcher.SessionMap;
import org.apache.struts2.interceptor.SessionAware;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
public class SessionInterceptor extends AbstractInterceptor implements
SessionAware {
SessionMap<String, Object> session;
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public String intercept(ActionInvocation arg0) throws Exception {
// TODO Auto-generated method stub
//preprocessing
System.out.println("Pre-processing");
arg0.invoke();
System.out.println("Post-Processing");
return "SUCCESS";
}
@Override
public void setSession(Map<String, Object> session) {
// TODO Auto-generated method stub
System.out.println("Set Session Method");
this.session=(SessionMap<String,Object>) session;
}
}
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