Handling Multiple Buttons in Struts

[zuishi dilmo]

I'm developing web application using jsp, struts, and hibernate. My jsp page having three buttons(add,edit,delete). I want to check which button clicked and get the button name or value to action class. I tried several ways but faild. I'm new to this area and still cannot find the answer. This is my jsp page(test.jsp)

   

<input name="add" type="image" src="images/SubmitBtn.jpg"  >
<input name="edit" type="image" src="images/EditBtn.jpg">
 <input name="delete" type="image" src="images/RemoveBtn.jpg">
 

testActionForm.java

   
 private String add;

  public String getAdd() {
      return add;
   }

 public void setAdd(String add) {
        this.add = add;
   }
 

testAction.java

    

if("add".equals( form.getAdd())
//then do this
else
if("edit".equals(form.getEdit())
//then do this...

got the error

  
javax.servlet.ServletException: BeanUtils.populate
	org.apache.struts.util.RequestUtils.populate(RequestUtils.java:469)
	org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:818)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:194)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

root cause

java.lang.IllegalArgumentException: No bean specified
	org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:751)
	org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:937)
	org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
	org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
	org.apache.struts.util.RequestUtils.populate(RequestUtils.java:467)
	org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:818)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:194)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)


  

[Prakash Mani - Attur]

Use DispatchAction or LookUpDispatchAction(with this you can use only multiple buttons which has business logic in the same class).. if you still want to use image buttons use EventDispatchAction..
I gues this is what you have asked.. if this is not you have asked show your struts-config.xml...

[Girish Kumar Prabhakar]

Hi,

I am not sure about using images for the buttons.

But for simple HTML buttons here is what you can do.

In your jsp code, specify the buttons as :

<html:submit property="button">
      <bean:message key="add" />
</html:submit>
<html:submit property="button">
      <bean:message key="edit" />
</html:submit>
<html:submit property="button">
     <bean:message key="delete" />
</html:submit>

(The display names for buttons is specified in the properties file here.)

In your actionform make a property as button and generate getter/setter.

Then in your Action class :

if(button.toUpperCase().equalsIgnoreCase("Add"))
{
           	//
}
 if(button.toUpperCase().equalsIgnoreCase("Edit")) {
            	//}

and so on.

Hope this helps you.

[zuishi dilmo]

Thnx for your replies. I tried Prakash Atturs method. It's working. You saved my time. Thank you so much. This link also very helpfull.

http://www.vaannila.com/struts/struts-example/struts-dispatch-action-example-1.html