本篇文章主要介紹了運用JSP+ajax實現分類查詢功能的實例代碼，具有一定的參考和學習JSP的價值，對JSP感興趣的可以了解一下本篇文章
這次是對小學期關於大學畢業生資訊管理系統課程設計中遇到的一些問題和解決方法進行記錄和分享。
主題要求：提供企業招聘信息（本年度或歷年）查詢功能；
#首先建立一個jsp文件用來顯示數據庫信息，並在上面加輸入條件的文本框和查詢按鈕，在這個jsp檔案中需要完成一個js函數在用來完成查詢功能。
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ page import="java.util.*"%>
<%@ page import="java.sql.*"%>
<%@ page import="TestSQL.SelectDB"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>企业招聘信息</title>
<style>
body {
width: 600px;
margin: 40px auto;
font-family: 'trebuchet MS', 'Lucida sans', Arial;
font-size: 14px;
color: #444;
}
table {
*border-collapse: collapse; /* IE7 and lower */
border-spacing: 0;
width: 100%;
}
/*----------------------*/
.zebra td,.zebra th {
padding: 10px;
border-bottom: 1px solid #f2f2f2;
}
.zebra tbody tr:nth-child(even) {
background: #f5f5f5;
-webkit-box-shadow: 0 1px 0 rgba(255, 255, 255, .8) inset;
-moz-box-shadow: 0 1px 0 rgba(255, 255, 255, .8) inset;
box-shadow: 0 1px 0 rgba(255, 255, 255, .8) inset;
}
.zebra th {
text-align: left;
text-shadow: 0 1px 0 rgba(255, 255, 255, .5);
border-bottom: 1px solid #ccc;
background-color: #eee;
background-image: -webkit-gradient(linear, left top, left bottom, from(#f5f5f5),
to(#eee));
background-image: -webkit-linear-gradient(top, #f5f5f5, #eee);
background-image: -moz-linear-gradient(top, #f5f5f5, #eee);
background-image: -ms-linear-gradient(top, #f5f5f5, #eee);
background-image: -o-linear-gradient(top, #f5f5f5, #eee);
background-image: linear-gradient(top, #f5f5f5, #eee);
}
.zebra th:first-child {
-moz-border-radius: 6px 0 0 0;
-webkit-border-radius: 6px 0 0 0;
border-radius: 6px 0 0 0;
}
.zebra th:last-child {
-moz-border-radius: 0 6px 0 0;
-webkit-border-radius: 0 6px 0 0;
border-radius: 0 6px 0 0;
}
.zebra th:only-child {
-moz-border-radius: 6px 6px 0 0;
-webkit-border-radius: 6px 6px 0 0;
border-radius: 6px 6px 0 0;
}
.zebra tfoot td {
border-bottom: 0;
border-top: 1px solid #fff;
background-color: #f1f1f1;
}
.zebra tfoot td:first-child {
-moz-border-radius: 0 0 0 6px;
-webkit-border-radius: 0 0 0 6px;
border-radius: 0 0 0 6px;
}
.zebra tfoot td:last-child {
-moz-border-radius: 0 0 6px 0;
-webkit-border-radius: 0 0 6px 0;
border-radius: 0 0 6px 0;
}
.zebra tfoot td:only-child {
-moz-border-radius: 0 0 6px 6px;
-webkit-border-radius: 0 0 6px 6px border-radius: 0 0 6px 6px
}
</style>
<!--
*
*
*此处为重点
*
*
*
-->
<script type="text/javascript">
//按年度查询，执行
var xmlhttp;
function loadHtml(str) {
xmlhttp = null;
if (window.XMLHttpRequest()) {
xmlhttp = new XMLHttpRequest();
} else {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if(xmlhttp.readyState==4&&xmlhttp.status==200)
{
document.getElementById("zpxx").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET", "EEIMSelect.jsp?str="+str, true);
xmlhttp.send();
}
</script>
<!--
*
*
*此处为重点
*
*
*
-->
</head>
<body>
<p align="right">
<input type="text" name="year" id="year">
<input type="button" value="按年度查询" onclick="loadHtml(document.getElementById('year').value)">
</p>
<p id="zpxx">
<%
request.setCharacterEncoding("utf-8");
SelectDB sd = new SelectDB();
String sql = "SELECT * FROM [EIMS].[dbo].[EEIM]";
ResultSet rs = sd.query(sql);
out.println("<table class='zebra'>");
out.println("<tr><td>公司名字</td><td>招聘岗位</td><td>招聘人数</td><td>工作地点</td><td>要求</td><td>工资</td><td>电话</td><td>日期</td></tr>");
while (rs.next()) {
int Eid = Integer.parseInt(rs.getString("Eid"));
out.println("<tr>");
out.println("<td>" + rs.getString("Ename") + "</td>");
out.println("<td>" + rs.getString("Jvac") + "</td>");
out.println("<td>" + rs.getString("Num") + "</td>");
out.println("<td>" + rs.getString("Workplace") + "</td>");
out.println("<td>" + rs.getString("Requirement") + "</td>");
out.println("<td>" + rs.getString("Salary") + "</td>");
out.println("<td>" + rs.getString("Tel") + "</td>");
out.println("<td>" + rs.getString("Year") + "</td>");
out.println("<td><a href='EEI_show.jsp?Eid=" + Eid
+ "'>了解更多</a></td>");
}
out.println("</table>");
%>
</p>
</body>
</html>
out.println("</table>");
%>
</p>
</body>
</html>執行介面如下：
然後在另一個介面處理請求，利用ajax技術可實現同步刷新，程式碼如下：
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ page import="java.util.*" %>
<%@ page import="java.sql.*" %>
<%@ page import="TestSQL.SelectDB" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>企业招聘信息</title>
<style>
body {
width: 600px;
margin: 40px auto;
font-family: 'trebuchet MS', 'Lucida sans', Arial;
font-size: 14px;
color: #444;
}
table {
*border-collapse: collapse; /* IE7 and lower */
border-spacing: 0;
width: 100%;
}
/*----------------------*/
.zebra td, .zebra th {
padding: 10px;
border-bottom: 1px solid #f2f2f2;
}
.zebra tbody tr:nth-child(even) {
background: #f5f5f5;
-webkit-box-shadow: 0 1px 0 rgba(255,255,255,.8) inset;
-moz-box-shadow:0 1px 0 rgba(255,255,255,.8) inset;
box-shadow: 0 1px 0 rgba(255,255,255,.8) inset;
}
.zebra th {
text-align: left;
text-shadow: 0 1px 0 rgba(255,255,255,.5);
border-bottom: 1px solid #ccc;
background-color: #eee;
background-image: -webkit-gradient(linear, left top, left bottom, from(#f5f5f5), to(#eee));
background-image: -webkit-linear-gradient(top, #f5f5f5, #eee);
background-image: -moz-linear-gradient(top, #f5f5f5, #eee);
background-image: -ms-linear-gradient(top, #f5f5f5, #eee);
background-image: -o-linear-gradient(top, #f5f5f5, #eee);
background-image: linear-gradient(top, #f5f5f5, #eee);
}
.zebra th:first-child {
-moz-border-radius: 6px 0 0 0;
-webkit-border-radius: 6px 0 0 0;
border-radius: 6px 0 0 0;
}
.zebra th:last-child {
-moz-border-radius: 0 6px 0 0;
-webkit-border-radius: 0 6px 0 0;
border-radius: 0 6px 0 0;
}
.zebra th:only-child{
-moz-border-radius: 6px 6px 0 0;
-webkit-border-radius: 6px 6px 0 0;
border-radius: 6px 6px 0 0;
}
.zebra tfoot td {
border-bottom: 0;
border-top: 1px solid #fff;
background-color: #f1f1f1;
}
.zebra tfoot td:first-child {
-moz-border-radius: 0 0 0 6px;
-webkit-border-radius: 0 0 0 6px;
border-radius: 0 0 0 6px;
}
.zebra tfoot td:last-child {
-moz-border-radius: 0 0 6px 0;
-webkit-border-radius: 0 0 6px 0;
border-radius: 0 0 6px 0;
}
.zebra tfoot td:only-child{
-moz-border-radius: 0 0 6px 6px;
-webkit-border-radius: 0 0 6px 6px
border-radius: 0 0 6px 6px
}
</style>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String str=request.getParameter("str");
SelectDB sd = new SelectDB();
String sql = "SELECT * FROM [EIMS].[dbo].[EEIM] where Year like '"+str+"%'";
ResultSet rs = sd.query(sql);
out.println("<table class='zebra'>");
out.println("<tr><td>公司名字</td><td>招聘岗位</td><td>招聘人数</td><td>工作地点</td><td>要求</td><td>工资</td><td>电话</td><td>日期</td></tr>");
while (rs.next()) {
int Eid=Integer.parseInt(rs.getString("Eid"));
out.println("<tr>");
out.println("<td>" + rs.getString("Ename") + "</td>");
out.println("<td>" + rs.getString("Jvac") + "</td>");
out.println("<td>" + rs.getString("Num") + "</td>");
out.println("<td>" + rs.getString("Workplace") + "</td>");
out.println("<td>" + rs.getString("Requirement") + "</td>");
out.println("<td>" + rs.getString("Salary") + "</td>");
out.println("<td>" + rs.getString("Tel") + "</td>");
out.println("<td>" + rs.getString("Year") + "</td>");
out.println("<td><a href='EEI_show.jsp?Eid=" + Eid
+ "'>了解更多</a></td>");
}
out.println("</table>");
%>
</body>
</html>實現效果：
以上就是本文的全部內容，希望對大家的學習有幫助！ ！
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