loginaction.java

一个Struts的小例题,通过发放令牌实现避免用户重复提交表单

package com.accp.web.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;

public class LoginAction extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		if(this.isTokenValid(request)) {
			System.out.println("第一次提交");
			this.resetToken(request) ;
		}
		else {
			System.out.println("请不要重复提交");
		}
		return null;
	}

}