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How to create object and call a method in jsp using struts 2 tags

chaitanya karthikk

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posted 10 years ago

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Hi all, I am Chaitanya, I am new to struts and its tags. I am learning struts2 and google app engine. I am working on running a struts application on app engine. As a part of it I have to create login and logout urls using google's UserService class's methods. Using scriptlets I used to like this

Now I have to do the same using struts 2 tags. Can anyone help me how to achieve this?

Thank you all in advance. Good day.

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chaitanya karthikk

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posted 10 years ago

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Should I use custom tag libraries to achieve this?

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Mohana Rao Sv

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posted 10 years ago

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Using Struts2 tags you can call method directly. <s:property value=%{user.getCurrentUser()}/>

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chaitanya karthikk

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Mohana Rao wrote:Using Struts2 tags you can call method directly. <s:property value=%{user.getCurrentUser()}/>

I tried with this

But it is not working, I am not getting an error also.

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chaitanya karthikk

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This worked fine for me. But I don't know whether this approach is appreciated or not.

index1.jsp

struts.xml

LoginAction.java

package com.guestbook;
    
    import java.io.IOException;
    
    import javax.servlet.http.HttpServletResponse;
    
    import org.apache.struts2.interceptor.ServletResponseAware;
    
    import com.google.appengine.api.users.UserService;
    import com.google.appengine.api.users.UserServiceFactory;
    import com.opensymphony.xwork2.ActionSupport;
    
    @SuppressWarnings("serial")
    public class LoginAction extends ActionSupport implements ServletResponseAware
    {
    	private HttpServletResponse response;
    	private String continueuri;
    	public String execute()
    	{
    		return SUCCESS;
    	}
    	public void redirect()
    	{
    		try {
    			UserService service = UserServiceFactory.getUserService();
    			response.sendRedirect(service.createLoginURL(getContinueuri()));
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    	}
    
    	@Override
    	public void setServletResponse(HttpServletResponse response) {
    		// TODO Auto-generated method stub
    		this.response = response;
    	}
    
    	public void setContinueuri(String continueuri) {
    		this.continueuri = continueuri;
    	}
    
    	public String getContinueuri() {
    		return continueuri;
    	}
    }

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