Retrieving information from previous page's form

[Nicolás Muñoz]

Hi. I'm new at Struts and I barely can use it. I have a page which has a form. This form is submitted to an Action Controller which checks some things and then sends the user to another page. My question is: how can I retrieve what the user put in the form in this last page? The Action Controller returns an ActionForward object. I'm assuming that this object has to have this information (not by default but one could put it there), but I'm not sure and, as I said, I practically know nothing about Struts. Thanks!

[a kishore]

Hi Nicolás,

Welcome to CodeRanch!!

how can I retrieve what the user put in the form in this last page?

What ever you enter in your first page, if its a jsp page, you can retrieve in your actionclass using request.getparameter().
In your action class you can do string validations.

The Action Controller returns an ActionForward object.

ActionForward object is to forward your action to a new jsp page or to a new action class.


-HTH

regards,
kishore

[Nicolás Muñoz]

Hi, kishore. If I understood you correctly, request.getParameter() can help me, but if I am in the .jsp page, I can't do this because I don't have the variable request. This variable is in a method of the Action Controller and I cannot call it from the .jsp page. Well, probably I'm wrong. I'm sorry for my lack of knowledge. I just don't know how to call a method from the Action Controller within .jsp

[a kishore]

Nicolás ,

how to call a method from the Action Controller within .jsp

I didnot get you properly, but then im posting some sample jsp and action class codes below. please go through it and comeback to me.

you can use this in your jsp:

  <html:form action="/LoginAction" method="post">
                <table width="100%" align="center">
					<tr>
						<td>
							Username: <html:text property="username" value="" size="20" />
						</td>
					</tr>
					<tr>
						<td>
							Password: <html:text property="password" value="" size="20" />
						</td>
					</tr>			
				  <tr>
					<td colspan="2"><div align="center">
						<html:submit property="Login" value="Login" />
						<html:reset property="Reset" value="Reset" />
					  </div></td>
					</tr>
				  </table>
             </html:form>  

for action class:

 
public class LoginAction extends Action{
    public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response)
                        throws Exception
	{
		String usrname_frm_login_jsp=(String)request.getParameter("username");
		String password_frm_login_jsp=(String)request.getParameter("password");
		return mapping.findForward("success");  // in your struts-config.xml, you can forward to anypage
	}
}

-HTH

regards,
kishore

[Nicolás Muñoz]

I understand what you're explaining to me. I did this. And it works. The doubt I have is the following: let's suppose I have 1.jsp and 2.jsp. In 1.jsp I have a form, and let's assume its code is what you posted here. When the user submits its username and password, then the LoginAction Controller must do some things but ultimately will return this:

  return mapping.findForward("success");   

as you said. In the configuration file of struts, it will look for "success" and because "success" it's related to an URL, it will send the user from 1.jsp to 2.jsp (it could be anywhere anyway). All of this I have done, but my question is: In 2.jsp how can I retrieve the username and password the user put in the form included in 1.jsp? I have been unable to do this. Thanks for all the help

[a kishore]

You have to set username and password in ActionForm and can retrieve in 2.jsp

to set into actionform, you can use the following code.

  
public class LoginActionForm extends ValidatorActionForm{

    private String username;
    private String password;
    /** Creates a new instance of LoginActionForm */
    public LoginActionForm() {
    }
    public void setuserName(String user){
        this.username=user;
    }
    public String getuserName(){
        return(this.username);
    }
    public void setpassword(String pass){
        this.password=pass;
    }
    public String getpassword(){
        return(this.password);
    }

}

then in struts-config, you have to map this actionform like this

    
<struts-config>
    <form-beans>
        <form-bean name="LoginForm" type="com.modular.d2dcms.Login.LoginActionForm"></form-bean>
    </form-beans>
</struts-config>

<action-mappings>
        <action path="/Welcome" forward="/welcomeStruts.jsp"/>

        <action path="/LoginActn"
        type="com.org.Login.LoginAction"
        name="LoginForm"
        input="/welcomeStruts.jsp"
        validate="true"
        scope="session">
        <forward name="success" path="/2.jsp"/>
        <forward name="failure" path="/1.jsp"/>
</action-mappings>

and in 2.jsp you can use this:

    
<html:text property="username" /></td>

-HTH

regards,
kishore