運用JSP+ajax實現(xiàn)分類查詢功能的實例代碼

2024-09-05 00:23:10

字體：大中小

供稿：網(wǎng)友

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：

這次是對小學期關(guān)于大學畢業(yè)生信息管理系統(tǒng)課程設計中遇到的一些問題和解決方法進行記錄和分享。

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==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*** --></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：

ajax實現(xiàn)分類查詢,JSP分類查詢,JSP,ajax,分類查詢

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：

ajax實現(xiàn)分類查詢,JSP分類查詢,JSP,ajax,分類查詢