《struts---利用Token防止表单重复提交》
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2022-07-02 23:45:26
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/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.fenghuo.struts.web.actions;
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;
/**
* MyEclipse Struts
* Creation date: 10-07-2012
*
* XDoclet definition:
* @struts.action validate="true"
* @struts.action-forward name="success" path="/WEB-INF/jsp/register.jsp"
*/
public class UserRegUI extends Action {
/*
* Generated Methods
*/
/**
* 转到注册页面的action
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
//在进入注册页面时为表单生产一个隐藏的标签,储存Token的值
this.saveToken(request);
return mapping.findForward("success");
}
}
/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.fenghuo.struts.web.actions;
import java.io.UnsupportedEncodingException;
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;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import com.fenghuo.struts.web.forms.UserForm;
/**
* MyEclipse Struts
* Creation date: 10-07-2012
*
* XDoclet definition:
* @struts.action path="/UserRegister" name="userForm" scope="request" validate="true"
* @struts.action-forward name="main.jsp" path="/WEB-INF/jsp/main.jsp" redirect="true"
*/
public class UserMain extends Action {
/*
* Generated Methods
*/
/**
* 用户点击提交后会将信息提交到此action
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
ActionMessages errors = new ActionMessages();
//判断如果Token的值不存在,说明重复提交。
//重复提交,只是用户在当前页面多次点击提交按钮,或后退重新提交
//如果用户刷新,就会生产新的表单和Token也就不会重复提交了
if(!isTokenValid(request))
{
//添加重复提交信息,并在注册页面做相应的操作,让信息显示出来即可
errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("表单重复提交!",false));
}
if(!errors.isEmpty())
{
saveErrors(request, errors);
//跳转到错误页面
return mapping.getInputForward();
}
//如果上面未跳转,则清除Token
resetToken(request);
return mapping.findForward("success");
}
}
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