问题很奇怪，测了下是在最后的form表单（句号那），只要迭代从后台传来的list的值就会让action代码执行两次
- HTML code
<%@ page language="java" import="com.sykjw.entity.*,java.util.*,com.sykjw.vo.BasketFee" pageEncoding="utf-8"%><%@ taglib uri="/struts-tags" prefix="s" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <base href="<%=basePath%>"> <title> New Document </title> <meta http-equiv="pragma" content="no-cache" charset=UTF-8"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <script type="text/javascript"> function dinggou(id,type){ var a = "#goods"+id ; var type = type ; var amount ; var url ; if(type == "1"){ //点击订购button触发 alert(type) ; amount = $("#goods"+id).attr("value"); url = 'json/addGoods.action' ; } var req = { "id":id, "amount":amount, }; //var params = Form.serialize('form1'); //创建Ajax.Request对象，对应于发送请求 $.post(url,req,function processResponse(date){ alert("回调函数1") ; var string = "<h3 id='goback' style='cursor:pointer'>我的购物车</h3>" +" <font style='color:blue'>提醒:根据你最终提交订单时间，订餐时间可能有所调整</font>" + "<table width='100%' border='1' style='border:1px solid #FFB31D' height='auto' cellpadding='0' cellspacing='0'>" + " <tr ><th scope='col' style='border-bottom:1px solid #FFB31D'>品名</th>" + "<th scope='col' style='border-bottom:1px solid #FFB31D'>数量(份)</th>" + "<th scope='col' style='border-bottom:1px solid #FFB31D'>价格(元)</th>" + "<th scope='col' style='border-bottom:1px solid #FFB31D'>取消</th></tr>"; alert("回调函数2") ; for(var name in date.cart){ string += "<tr><td style='border-bottom:1px solid #FFB31D;' width='35%'>"+date.cart[name].name+"</td>" +"<td style='border-bottom:1px solid #FFB31D'><img src='images/logo/btn_minus.gif' alt=''></img> " +"<input type='text' size='2' value="+date.cart[name].amount+" /> <img src='images/logo/btn_add.gif' alt=''></img></td>" +"<td style='border-bottom:1px solid #FFB31D;' width='35%'>" +date.cart[name].subTotal+"</td>" + "<td style='border-bottom:1px solid #FFB31D' width='15%'><img src='images/logo/btn_close.gif' alt='取消'></img></td></tr>"; //alert(name + " and count is =" + date.cart[name].amount);//不确定的属性使用in表达式 } alert("回调函数3") ; string += "</table>"; string += "<div style='position:relative;top:40px;width:99.5%;height:70px;'>" +"<table width='100%' border='0' height='auto' cellpadding='0' cellspacing='0'> " + "<tr> <td style='border-bottom:1px solid #FFB31D;border-top:1px solid #FFB31D'>小计:</td>" + "<td style='border-bottom:1px solid #FFB31D;;border-top:1px solid #FFB31D'>"+date.basketFee.total-date.basketFee.fee+"</td></tr>" + "<tr><td style='border-bottom:1px solid #FFB31D'>外送费:</td><td style='border-bottom:1px solid #FFB31D'>"+date.basketFee.fee+"</td></tr>" + "<tr><td style='border-bottom:1px solid #FFB31D'>合计:</td><td style='border-bottom:1px solid #FFB31D'>"+date.basketFee.total+"</td></tr>" + "</table>"; alert("回调函数4") ; $("#gwc_content").html(string); //重写购物车的table alert("ok la") ; },'json') }; </script> <script type="text/javascript"> $(".left_nav_list li").each(function(index){ $(this).click(function(){ $(".show").removeClass("show"); $(".menu").eq(index).addClass("show"); }); }); $("#gouwuche").click(function(){ $("#gwc_content").toggle(500); }); $("#goback").click(function(){ $("#gwc_content").toggle(500);}) }) </script> <style type="text/css"> body {margin:0px; padding:0px; } #container { position:relative; width:595px; height:580px; overflow:auto; } #container .list { width:150px; height:250px; border:1px solid black; float:left; margin-left:6%; margin-top:5px; } img { cursor:pointer; } </style> </head> <% Map<Integer,BasketVO> cart = (Map<Integer,BasketVO>)session.getAttribute("cart") ; BasketFee basketFee = (BasketFee)session.getAttribute("basketFee") ; SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd") ; String today = simpleDateFormat.format(new Date()) ; Date date=null; date = new SimpleDateFormat("yy-MM-dd").parse(today); Calendar c = Calendar.getInstance(); c.setTime(date); int day=c.get(Calendar.DATE); c.set(Calendar.DATE,day+1); String tomorrow = new SimpleDateFormat("yyyy-MM-dd").format(c.getTime()); List<String> avalidTimeList = (List<String>)request.getAttribute("avalidTimeList") ; String s1 = avalidTimeList.get(0) ; %> <body> <div id="container"> <s:iterator value="goodsList" var="goods"> <div class="list"> <img src=${image} width="99.9%" alt=""></img> <div style="width:99.6%;height:20px;text-align:center;line-height:20px;"> <font style="font-size:13px;font-weight:bold;color:red">${name}</font> </div> <div style="width:99.6%;height:30px;line-height:30px"> <s:if test="isSale == 1"><font style="font-size:13px;font-weight:bold;color:red"> ${promotionPrice }/份</font></s:if> <s:else><font style="font-size:13px;font-weight:bold;color:red"> ${salePrice }/份</font></s:else> <input type="text" name="amount" id="goods${id}" value="1" onkeyup="this.value=this.value.replace(/\D/g,'')" maxlength="2" onafterpaste="this.value=this.value.replace(/\D/g,'')" style="width:30px;height:13px" /><font style="font-size:13px;font-weight:bold;color:red">份</font> </div> <br /> <div style="width:99.6%;height:30px;line-height:30px;text-align:center"> <img id="img" src="images/logo/order_button.png" alt="" onclick="dinggou(${id},1)"></img> </div> </div> </s:iterator> </div> <div id="gouwuche"> <img src="images/logo/cale.png" alt=""></img><font style="font-size:10pt">购物车</font> </div> <div id="gwc_content"> <h4 id="goback" style="cursor:pointer">购物车(点我收起)</h4> <font style="color:blue">提醒:根据你最终提交订单时间，订餐时间可能有所调整</font> <div id="g" style="overflow:auto;width:100%;height:130px"> <table width="100%" border="0" style="border:1px solid #FFB31D" height="auto" cellpadding="0" cellspacing="0"> <tr > <th scope="col" style="border-bottom:1px solid #FFB31D">品名<br><br></th> <th scope="col" style="border-bottom:1px solid #FFB31D">数量(份)<br><br></th> <th scope="col" style="border-bottom:1px solid #FFB31D">价格(元)<br><br></th> <th scope="col" style="border-bottom:1px solid #FFB31D">取消<br><br></th> </tr> <% if(cart != null){ for (Object o : cart.keySet()) { %> <tr> <td style="border-bottom:1px solid #FFB31D;" width="33%"align="center" valign="middle"><%=cart.get(o).getName() %></td> <td style="border-bottom:1px solid #FFB31D" width="35%"align="center" valign="middle"><img src="images/logo/btn_minus.gif" alt="" onclick="dinggou(<%=cart.get(o).getId() %>,2)"></img> <input id="gwc_amount" type="text" maxlength="2" onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')" onBlur="dinggou(<%=cart.get(o).getId() %>,4)" size="2" value=<%=cart.get(o).getAmount() %> /> <img src="images/logo/btn_add.gif" alt="" onclick="dinggou(<%=cart.get(o).getId() %>,3)"></img></td> <td style="border-bottom:1px solid #FFB31D" width="20%"align="center" valign="middle"><%=cart.get(o).getSubtotal() %></td> <td style="border-bottom:1px solid #FFB31D" width="12%" align="center" valign="middle"><img src="images/logo/btn_close.gif" alt="取消" onclick="dinggou(<%=cart.get(o).getId() %>,5)"></img></td> </tr> <% } } %> </table> </div> <div style="position:absolute;bottom:43px;width:99.5%;height:70px;"> <table width="100%" border="0" height="70px" cellpadding="0" cellspacing="0"> <tr> <td align="center"width="45%" style="color:red;border-bottom:1px solid #FFB31D;border-top:1px solid #FFB31D">小计(RMB):</td> <td align="center" width="55%"style="color:red;border-bottom:1px solid #FFB31D;;border-top:1px solid #FFB31D"></td> </tr> <tr> <td align="center" style="color:red;border-bottom:1px solid #FFB31D">外送费(RMB):</td> <td align="center" style="color:red;border-bottom:1px solid #FFB31D"></td> </tr> <tr> <td align="center" style="color:red;border-bottom:1px solid #FFB31D">合计(RMB):</td> <td align="center" style="color:red;border-bottom:1px solid #FFB31D"></td> </tr> </table> </div> <div style="position:absolute;bottom:-25px;width:99.5%;height:70px;"> <form action="addOrder" method="post"> <select name="dealDate" style="width:150px;" > <s:iterator value="avalidTimeList"> <option>。。。</option> </s:iterator> </select> <input type="button" value="全部清空" onclick="dinggou(0,6)"/> <input type="submit" value="下订单"></input> </form> </div> </div> </body></html>