本文主要是介紹了運(yùn)用JSP+ajax實(shí)現(xiàn)分類查詢功能的實(shí)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(jì)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(diǎn)*** --><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==4&&xmlhttp.status==200) { document.getElementById("zpxx").innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET", "EEIMSelect.jsp?str="+str, true); xmlhttp.send(); }</script><!-- ***此處為重點(diǎn)*** --></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(diǎn)</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(yùn)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(shí)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(diǎn)</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(shí)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VeVb武林網(wǎng)。
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