本文主要是介紹了運用JSP+ajax實現(xiàn)分類查詢功能的實例代碼，分享給大家供大家參考，具體如下：
這次是對小學(xué)期關(guān)于大學(xué)畢業(yè)生信息管理系統(tǒng)課程設(shè)計中遇到的一些問題和解決方法進(jìn)行記錄和分享。
題目要求：提供企業(yè)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(shù)據(jù)庫信息，并在上面加輸入條件的文本框和查詢按鈕，在這個jsp文件中需要完成一個js函數(shù)在用于完成查詢功能。
%@ 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>企業(yè)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>
!--
*
*
*此處為重點
*
*
*
-->
script type="text/javascript">
//按年度查詢，執(zhí)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==4xmlhttp.status==200)
{
document.getElementById("zpxx").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET", "EEIMSelect.jsp?str="+str, true);
xmlhttp.send();
}
/script>
!--
*
*
*此處為重點
*
*
*
-->
/head>
body>
div align="right">
input type="text" name="year" id="year">
input type="button" value="按年度查詢" onclick="loadHtml(document.getElementById('year').value)">
/div>
div 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>招聘崗位/td>td>招聘人數(shù)/td>td>工作地點/td>td>要求/td>td>工資/td>td>電話/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>");
%>
/div>
/body>
/html>
out.println("/table>");
%>
/div>
/body>
/html>
運行界面如下：
然后在另一個界面處理請求，利用ajax技術(shù)可實現(xiàn)同步刷新，代碼如下：
%@ 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>企業(yè)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>招聘崗位/td>td>招聘人數(shù)/td>td>工作地點/td>td>要求/td>td>工資/td>td>電話/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(xiàn)效果：
以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。
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