码迷,mamicode.com
首页 > 其他好文 > 详细

Struts1防止表单重复提交

时间:2015-06-13 20:02:53      阅读:146      评论:0      收藏:0      [点我收藏+]

标签:

package org.zln.struts.action;

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

/**
 * Created by sherry on 000020/5/20 20:37.
 */
public class RegUserUI extends Action {


    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
        /*注意,请求页面一定要通过这个Action跳转过去*/
        this.saveToken(request);
        return mapping.findForward("SUCCESS");
    }
}
<%@ taglib prefix="html" uri="http://struts.apache.org/tags-html" %>
<%@ taglib prefix="bean" uri="http://struts.apache.org/tags-bean" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %>
<html>
<head>
    <title>注册用户</title>
</head>
<body>

    <hr/>
    <html:link action="/local?language=zh">中文</html:link><br/>
    <html:link action="/local?language=en">英文</html:link><br/>
    <hr/>
    <html:errors property="doubleSubmit" header="" footer="" prefix="" suffix=""/>
    <!-- 注意:只有使用html:form生成的表单,才会从session中获取Token -->
    <html:form action="/regUser" method="post">
        <table>
            <caption>注册</caption>
            <tr>
                <td>用户名</td>
                <td><html:text property="regUser.username"/><html:errors property="username" header="" footer="" prefix="" suffix=""/> </td>
            </tr>
            <tr>
                <td>密码</td>
                <td>
                    <%-- value="" 是为了不回显密码--%>
                    <html:password property="regUser.password" value=""/> <html:errors property="password" header="" footer="" prefix="" suffix=""/>
                </td>
            </tr>
            <tr>
                <td>密码确认</td>
                <td>
                    <html:password property="password2" value=""/><html:errors property="password2" header="" footer="" prefix="" suffix=""/>
                </td>
            </tr>
            <tr>
                <td>身高</td>
                <td>
                    <html:text property="regUser.height"/>
                </td>
            </tr>
            <tr>
                <td colspan="2" align="right">
                    <html:submit titleKey="info.submit"><bean:message bundle="message" key="info.submit"/></html:submit>
                    <html:checkbox property="autoLogin">两周内自动登录?</html:checkbox>
                    <html:cancel>取消</html:cancel>
                </td>
            </tr>
        </table>
    </html:form>
    <hr/>

</body>
</html>
package org.zln.struts.action;

import org.apache.struts.action.*;
import org.zln.struts.form.RegUserForm;

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

/**
 * Created by sherry on 000020/5/20 20:37.
 */
public class RegUser extends Action {

    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
        ActionMessages errors = new ActionMessages();
        /*进行所有操作之前,先判断表单是否重复提交*/
        if (!isTokenValid(request,true)){//假如Token无效  true表示校验完后将Token从session中清除
            errors.add("doubleSubmit",new ActionMessage("表单重复提交",false));
            this.saveErrors(request,errors);
            return mapping.getInputForward();
        }
        RegUserForm regUserForm = (RegUserForm) form;
        System.out.println("username:"+regUserForm.getRegUser().getUsername()+"\nautoLogin:"+regUserForm.isAutoLogin());
        request.setAttribute("username",regUserForm.getRegUser().getUsername());
        /*业务逻辑校验*/
        if (!"zln".equals(regUserForm.getRegUser().getUsername().trim())){//假设数据库中获取到的用户名是  zln
            errors.add("username",new ActionMessage("用户不存在",false));
            this.saveErrors(request,errors);//request.setAttribute(Globals.ERROR_KEY, errors);
            //return mapping.findForward("FAILURE");
            return mapping.getInputForward();
        }
        return mapping.findForward("SUCCESS");
    }
}

/*
因为在打开表单页面之前,会先往session中存放一个Token,
提交请求的时候,会将隐藏域中的Token作为参数一起提交
所谓有效的Token,就是session中的Token与表单提交时候的Token值相同,就被视为是一次请求。并且判断完后会将session中的Token清除
加入用户通过后退再次提交,此时session中的Token已经消失了,所以Token判断就会被视为无效
*/

 

Struts1防止表单重复提交

标签:

原文地址:http://www.cnblogs.com/sherrykid/p/4573882.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!