jsp防止按钮重复提交

来源：互联网发布：java中getname 编辑：程序博客网时间：2024/05/21 09:48

这里写图片描述
使用jquery方法：

<html><body><form method="get" action="" target="box"><input id="buttonid" type="submit" value="提交" /></form><script type="text/javascript" src="js/jquery-1.6.2.min.js"></script><script>$("form").submit(function() {  $("#buttonid").val("正在处理...");  $("#buttonid").attr("disabled", "disabled");});</script></body></html>

javawb方法：
原理：在session中插入标记，在一次session中只能提交一次
下面是代码：
index.jsp

<body>    <%        String tokenValue = new Date().getTime() + "";     %>    <form action="${pageContext.request.contextPath}/servlet/controler" method="post">        <input type="hidden" name = "token" value = "<%=tokenValue%>">        <%            session.setAttribute("token",tokenValue );         %>        name:<input type="text" name="name">        <input type="submit" value="提交"/>    </form>  </body>

controler.java

package com.xiajun.control;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;public class controler extends HttpServlet {    private static final long serialVersionUID = 1L;    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        try{            Thread.sleep(2000);        }catch(InterruptedException e){            e.printStackTrace();        }        HttpSession session  = request.getSession();        Object token = session.getAttribute("token");        String tokenValue = request.getParameter("token");        System.out.println(token);        System.out.println(tokenValue);        if(token != null && token.equals(tokenValue)){            session.removeAttribute("token");        }else{            response.sendRedirect(request.getContextPath()+ "/token.jsp") ;            return;        }        String name  = request.getParameter("name");        System.out.println("name:" + name);//      request.getRequestDispatcher("/success.jsp").forward(request,response);        response.sendRedirect(request.getContextPath()+ "/success.jsp") ;    }    public void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        doGet(request,response);    }}

success.jsp

  <body>   成功. <br>  </body>

token.jsp

  <body>    对不起，不能重复提交！<br>  </body>

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