regaction.java

用STRUTS解决重复提交问题

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package struts.action;

import java.util.Random;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.Globals;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;

import struts.form.RegForm;

/** 
 * MyEclipse Struts
 * Creation date: 09-01-2008
 * 
 * XDoclet definition:
 * @struts.action path="/reg" name="regForm" input="/reg.jsp" scope="request" validate="true"
 */
public class RegAction extends Action
{
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		/*脱离STRUTS方法
		RegForm regForm = (RegForm) form;// TODO Auto-generated method stub
		String target="failure";
		Integer i=(Integer)request.getSession().getAttribute("token");
		System.out.println("session中的"+i);
		int token=regForm.getToken( );
		System.out.println("从页面得到的"+token);
		if(i.equals(token)) {
			Random a=new Random();
			Integer x=new Integer(a.nextInt(100));
			System.out.println("重新产生的"+x);
			request.getSession().setAttribute("token",x);
			return mapping.findForward("success");
				
		}
        else {
			ActionErrors errors=new ActionErrors();
			ActionMessage msg=new ActionMessage("不能重复提交!!",false);
			errors.add("token",msg);
			request.setAttribute(Globals.ERROR_KEY,errors);
			return mapping.findForward("reg");
			
		}*/
		RegForm regForm = (RegForm) form;
		if(isTokenValid(request,true)) {
			return mapping.findForward("success");
		}
		else {
			ActionErrors errors=new ActionErrors();
			ActionMessage msg=new ActionMessage("不能重复提交",false);
			errors.add("token",msg);
			request.setAttribute(Globals.ERROR_KEY,errors);
			return mapping.findForward("reg");
			
		}
		
	
	}
}