日期:2014-05-16  浏览次数:20653 次

我用jQuery调用java业务类的方法这样有什么问题?
我直接上代码了,我刚学Jquery。
  要求是,当我点击页面的下拉列表选择不同的分数的时候,通过jQuery跳到java类中,再由这个类去访问数据库,得到一个集合,要将这个集合遍历以表格的形势显示在页面中,

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  <base href="<%=basePath%>">
   
  <title>信息显示</title>
   
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">  
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

  <style type="text/css">
<!--
.STYLE2 {font-size: 24px}
-->
  </style>
  <script type="text/javascript" src="jquery-1.2.3-intellisense.js"></script> 
  <script type="text/javascript">
  $(document).ready(function() {
$("#sel").change(function() {
var score =this.value;
alert(this.value);
$.ajax({
type: "POST",
url: "/biz/impl/InfoBizImpl.java/getBySql2",// 我要调用InfoBizzImpl类中的getBySql2这个方法
data:score, //这里是我要传入方法的参数
contentType: "application/json; charset=utf-8",
success: function(msg) { 
$("#div1").html(msg);
},
error: function(xhr,msg,e) {
alert(msg);
}
});
});
}); 
  </script>
</head>
  
  <body>
  <br>
  <table width="400" border="0" align="center">
  <tr>
  <td class="STYLE2">请选择分数的查询条件</td>
  </tr>
  <tr>
  <td><form name="form1" method="post" action="">
  <label>
  <select name="select1" id="sel">
  <option value="0" selected>全部</option>
  <option value="90">大于90分</option>
  <option value="80">大于80分</option>
  <option value="70">大于70分</option>
  <option value="60">大于60</option>
  <option value="50">不及格</option>
  </select>
  </label>
   
  </form>
  </td>
  </tr>
  <tr>
  <td><table width="400" border="0">
  <tr>
  <td>编号</td>
  <td>姓名</td>
  <td>科目</td>
  <td>成绩</td>
  </tr>
  <tr>
  <hr/&