helloaction.java

Struts 开发的helloword程序

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package hello;
import org.apache.struts.action.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//import org.apache.struts.action.Action;
//import org.apache.struts.action.ActionForm;
//import org.apache.struts.action.ActionForward;
//import org.apache.struts.action.ActionMapping;

/** 
 * @struts.action path="/hello" name="helloForm" input="/hello.jsp" scope="request" validate="true"
 * @struts.action-forward name="failed" path="/hello.jsp"
 * @struts.action-forward name="sayHello" path="/sayHello.jsp"
 */
public class HelloAction extends Action {

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		
		ActionMessages errors=new ActionMessages();
		HelloForm helloForm = (HelloForm) form;
		String userName=helloForm.getUserName();
		String badUserName="monster";

		if( userName.equals(badUserName) ){
			errors.add("username",new ActionMessage("hello.dont.talk.to.monster",badUserName));
		      saveErrors(request,errors);
		      return(new ActionForward(mapping.getInput()));
		}
		else{
			PersonBean pb=new PersonBean();
		    pb.setUserName(userName);
		    pb.save();
		    request.setAttribute(Constants.PERSON_KEY,pb);
		    request.removeAttribute(mapping.getAttribute());//将FormBean 从reqeust中清除，不需要此信息
		    return(new ActionForward(mapping.findForward("sayHello")));

		}
	}
}