RE: Passing Parameters to ActionForward from Action

[Gunduz Can Topal]

I am new to struts, there might be better ways to make this work.

You can maintain state information with session registery or http
parameters..

A working example:

----------------struts-config.xml
---------------------------------------

<form-beans>
        <form-bean name="loginForm" type="com.trend.forms.loginForm"/>  
</form-beans>

<action path="/login"
                input="/chatwalk.jsp"                   
                type="com.trend.actions.loginAction"
                name="loginForm"                                 
                scope="request"
                validate="true">
                <forward name="exception" path="/exception.jsp" />
                <forward name="success" path="/myChatwalk.jsp"/>
                <forward name="failure"
path="/chatwalk.jsp?auth=invalid&amp;nav=main"/>

</action>

-----------------loginAction.java -------------------------------------

public final class loginAction extends Action {

    public ActionForward execute(ActionMapping mapping,
                                 ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response)
        throws Exception {
        
        CWUtil util = new CWUtil();
      CWDAO service = new CWDAO();
        HttpSession session = request.getSession();
        String auth = null;
        ActionForward ret = null;
        userBean user = new userBean();         
      loginForm loginForm = (loginForm) form;
      loginBean login = new loginBean();
      BeanUtils.copyProperties( login, loginForm );
        
      try{
        auth = service.login(login);
                if(!auth.startsWith("Ex")){
                        user = util.parseLogin(auth);
                        session.setAttribute("user",user);
                        ret = mapping.findForward("success");
                }else{
                        ret = mapping.findForward("failure");
                } 
       }catch(Exception e){
                System.out.println("exception at login action " +
e.getMessage());
                ret = mapping.findForward("exception");
        }
        return ret;
    }
}

---------------------------- loginForm.java
--------------------------------

package com.trend.forms;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;


public class loginForm extends ActionForm {
        
        String username,password;

        public String getPassword() {
                return password;
        }

        public void setPassword(String password) {
                this.password = password;
        }

        public String getUsername() {
                return username;
        }

        public void setUsername(String username) {
                this.username = username;
        }
        
    public ActionErrors validate( ActionMapping mapping,
HttpServletRequest request ) {
        ActionErrors errors = new ActionErrors();
        HttpSession session = request.getSession();
        if ( getUsername() == null || getUsername().trim().length() == 0
) {
            errors.add("username",new
ActionMessage("errors.required","username"));
            session.setAttribute("loginError","true");
        }if ( getPassword() == null || getPassword().trim().length() ==
0 ) {
            errors.add("password",new
ActionMessage("errors.required","password"));
            session.setAttribute("loginError","true");
        }
                
        return errors;
    }
}

-----------------------------------loginBean.java-----------------------
----

package com.trend.beans;

public class loginBean {
        
        String username,password;

        public String getPassword() {
                return password;
        }

        public void setPassword(String password) {
                this.password = password;
        }

        public String getUsername() {
                return username;
        }

        public void setUsername(String username) {
                this.username = username;
        }

}



-----Original Message-----
From: siva [mailto:[EMAIL PROTECTED] 
Sent: Monday, February 13, 2006 12:06 PM
To: user@struts.apache.org
Subject: Passing Parameters to ActionForward from Action

Hi,

 

I want to know how to pass parameters from an Action to corresponding
ActionForward.

Basically, I am having only the jsp name in forward in
struts-config.xml.
But, when action is processed, I want to send some parameters to the
corresponding actionforward. 

 

Can some be help me in explaining how it can be achieved. 

 

Thanks,

Siva




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