本文实例为大家分享了java就业信息管理平台开发案例，供大家参考，具体内容如下
可查询公司信息，学生信息，班级信息，针对学生就业与否信息的统计，老师和管理员登录后的权限不同等
就业信息管理平台想要实现的是各个班级的学生就业情况，数据库里建有6张表，分别是班级，公司，职位，学生，登录用户。
其中就业信息在界面上显示的内容是学生信息和职位的组合，在jsp页面中是拼接来实现，如果这个学生找到工作则需要填写就业信息，否则空着。如就业截图。
在企业信息中，需要实现的功能是首先有计划招聘时间，实际招聘时间，每个都有老师，如果这个公司招聘结束，则要通过后面的编辑把实际招聘时间和实际招聘老师填写上去，招聘状态显示为已结束；否则不填，招聘状态为招聘中。还有两个功能就是两种查询：一是根据招聘查询，采用option下拉框中的选择；而是根据公司名称查询，是在框中输入公司关键字查询，这里用到了like模糊查询。而在就业信息中只用到了option下拉选择中的根据班级名的查询。
在班级信息只用到了输入关键字的精确查询。他们查询到的统计信息都会根据每页能够显示的条数进行分页，尤其是下拉框选择查询，它们可能不只一条信息。
基础信息里有班级信息和学生信息，学生信息显示的是学生的基本信息。
个人信息里显示的修改密码和用户信息，用户信息的一个特点是管理员和普通教师的权限问题。普通教师登录只能查看信息，但不能作任何修改。
所有基本信息都能实现增删改查，其中作分页查询时遇到的难点还是有的——下拉选择，此外就是分页时用到的page.js文件，实现的是显示第几页/共几页，首页/上一页/下一页/尾页。
还有就是权限问题，我是在数据库中注册登录用户时都有一个permission权限，填yes/no，然后在后面的程序中判断出来。本项目唯一缺憾就是没有实现导入导出功能，就是在就业信息栏右上角设置一个导入和导出按钮，就是一个模板，导入实现的是批量输入excel中的学生信息，导出实现的是把学生的就业情况导出excel表格形式。
1. addcompany_action.java
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package com.ben.emp.action;
import java.io.ioexception;
import java.text.parseexception;
import java.text.simpledateformat;
import javax.servlet.servletexception;
import javax.servlet.annotation.webservlet;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import javax.servlet.http.httpsession;
import com.ben.emp.model.company;
import com.ben.emp.model.user;
import com.ben.emp.service.companyservice;
import com.ben.emp.service.impl.companyserviceimpl;
@webservlet("/addcompany.action")
public class addcompany_action extends httpservlet{
@override
protected void doget(httpservletrequest req, httpservletresponse resp)
throws servletexception, ioexception {
req.getrequestdispatcher("/addcompany.jsp").forward(req, resp);
}
@override
protected void dopost(httpservletrequest req, httpservletresponse resp)
throws servletexception, ioexception {
string name = req.getparameter("name");
string introduce = req.getparameter("introduce");
string requirement = req.getparameter("requirement");
string address = req.getparameter("address");
string plantime = req.getparameter("plantime");
simpledateformat sdf = new simpledateformat("yyyy-mm-dd");
companyservice cs = new companyserviceimpl();
company com = new company();
httpsession session = req.getsession(true);
user user = (user) session.getattribute("user");
com.setname(name);
com.setintroduce(introduce);
com.setrequirement(requirement);
com.setaddress(address);
try {
com.setplantime(sdf.parse(plantime));
} catch (parseexception e) {
// todo auto-generated catch block
e.printstacktrace();
}
com.setstate("招聘中");
com.setteach1(user.getname());
com.setteach2("");
com.setid(0);
cs.addcompany(com);
resp.sendredirect(req.getcontextpath()+"/company.action");
}
}
2. editstudent_action.java
package com.ben.emp.action;
import java.io.ioexception;
import java.text.parseexception;
import java.text.simpledateformat;
import javax.servlet.servletexception;
import javax.servlet.annotation.webservlet;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import com.ben.emp.model.classes;
import com.ben.emp.model.student;
import com.ben.emp.service.classesservice;
import com.ben.emp.service.studentservice;
import com.ben.emp.service.impl.classesserviceimpl;
import com.ben.emp.service.impl.studentserviceimpl;
@webservlet("/editstudent.action")
public class editstudent_action extends httpservlet{
@override
protected void doget(httpservletrequest req, httpservletresponse resp)
throws servletexception, ioexception {
string strid = req.getparameter("id");
int studentid = integer.valueof(strid);
studentservice ss = new studentserviceimpl();
student stu = ss.getstudentbyid(studentid);
req.setattribute("stu", stu);
req.getrequestdispatcher("/editstudent.jsp").forward(req, resp);
}
@override
protected void dopost(httpservletrequest req, httpservletresponse resp)
throws servletexception, ioexception {
string strid = req.getparameter("id");
int studentid = integer.valueof(strid);
string name = req.getparameter("studentname");
string sex = req.getparameter("sex");
string school = req.getparameter("school");
string major = req.getparameter("major");
string bytime = req.getparameter("bytime");
simpledateformat sdf = new simpledateformat("yyyy-mm-dd");
string tel = req.getparameter("telephone");
string qq = req.getparameter("qq");
studentservice ss = new studentserviceimpl();
student stu = new student();
// httpsession session = req.getsession(true);
// user user = (user)session.getattribute("user");
string classname = req.getparameter("selectclass");
classesservice cs = new classesserviceimpl();
classes cla = cs.getclassesbyname(classname);
stu.setname(name);
stu.setsex(sex);
stu.setschool(school);
stu.setmajor(major);
try {
stu.setbytime(sdf.parse(bytime));
} catch (parseexception e) {
// todo auto-generated catch block
e.printstacktrace();
}
stu.settel(tel);
stu.setqq(qq);
stu.setclassid(cla.getid());
stu.setid(studentid);
ss.editstudent(stu);
resp.sendredirect(req.getcontextpath()+"/student.action");
}
}
3. employ_action.java
package com.ben.emp.action;
import java.io.ioexception;
import java.util.arraylist;
import java.util.list;
import javax.servlet.servletexception;
import javax.servlet.annotation.webservlet;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import com.ben.emp.model.classes;
import com.ben.emp.model.info;
import com.ben.emp.model.student;
import com.ben.emp.service.classesservice;
import com.ben.emp.service.infoservice;
import com.ben.emp.service.studentservice;
import com.ben.emp.service.impl.classesserviceimpl;
import com.ben.emp.service.impl.infoserviceimpl;
import com.ben.emp.service.impl.studentserviceimpl;
@webservlet("/employ.action")
public class employ_action extends httpservlet{
@override
protected void doget(httpservletrequest req, httpservletresponse resp)
throws servletexception, ioexception {
classesservice cs = new classesserviceimpl();
list<classes> cla = cs.getclasses();
list<string> lst = new arraylist<string>();
for(classes ele : cla){
string name = ele.getname();
lst.add(name);
}
studentservice ss = new studentserviceimpl();
list<student> lstu = ss.getstudentpage(1, 10);
infoservice is = new infoserviceimpl(); //连接到就业信息表里
list<info> lin = new arraylist<info>();
for(student ele : lstu){
info info = new info();
info = is.getinfobystudentid(ele.getid());
lin.add(info);
}
list<student> count = ss.getstudentpage(1, integer.max_value);
int number = count.size();
int page = number % 10 == 0 ? number / 10 : (number/10) + 1;
req.setattribute("lst", lst);
req.setattribute("value", "全部");
req.setattribute("number", number);
req.setattribute("page", page);
req.setattribute("index", 1);
req.setattribute("list", lstu);
req.setattribute("lin", lin);
req.getrequestdispatcher("/employ.jsp").forward(req, resp);
}
@override
protected void dopost(httpservletrequest req, httpservletresponse resp)
throws servletexception, ioexception {
string value = req.getparameter("select");
classesservice cs = new classesserviceimpl();
list<classes> cla = cs.getclasses();
list<string> lst = new arraylist<string>();
lst.add("全部");
for(classes ele : cla){
string name = ele.getname();
lst.add(name);
}
lst.remove(value);
studentservice ss = new studentserviceimpl();
infoservice is = new infoserviceimpl(); //连接到就业信息表里
list<info> lin = new arraylist<info>();
if(value.equals("全部")){
list<student> count = ss.getstudentpage(1, integer.max_value);
int number = count.size();
int page = number % 10 == 0 ? number / 10 : (number/10) + 1;
string strpageindex = req.getparameter("pageindex");
int index = integer.valueof(strpageindex);
list<student> lstu = ss.getstudentpage(index, 10);
for(student ele : lstu){
info info = new info();
info = is.getinfobystudentid(ele.getid());
lin.add(info);
}
req.setattribute("number", number);
req.setattribute("page", page);
req.setattribute("index", index);
req.setattribute("list", lstu);
req.setattribute("lin", lin);
}else{
list<student> count = ss.getstudentbyclassname(value, 1, integer.max_value);
int number = count.size();
int page = number % 10 == 0 ? number / 10 : (number/10) + 1;
string strpageindex = req.getparameter("pageindex");
int index = integer.valueof(strpageindex);
list<student> lstu = ss.getstudentbyclassname(value, index, 10);
for(student ele : lstu){
info info = new info();
info = is.getinfobystudentid(ele.getid());
lin.add(info);
}
req.setattribute("number", number);
req.setattribute("page", page);
req.setattribute("index", index);
req.setattribute("list", lstu);
req.setattribute("lin", lin);
}
req.setattribute("value", value);
req.setattribute("lst", lst);
req.getrequestdispatcher("/employ.jsp").forward(req, resp);
}
}
4. employ.jsp
<%@ page language="java" contenttype="text/html; charset=utf-8"
pageencoding="utf-8"%>
<%@ include file="base.jsp" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>无标题文档</title>
<link href="css/style.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="js/jquery.js"></script>
<!-- 自己加的一行 jquery.js -->
<script type="text/javascript" src="js/jquery-1.11.0.min.js"></script>
<script type="text/javascript" src="js/page.js"></script>
<script type="text/javascript">
$(function(){
$("select").change(function(){
$("#pageindex").val(1);
$("form").submit();
});
$(".pg").click(subfun);
});
function subfun(){
var id = $(this).attr("id");
var value = $("#pageindex").val();
var count = $("#pagecount").val();
if(id == "first"){
$("#pageindex").val(1);
$("form").submit();
}else if(id == "previous"){
if(number(value) == 1){
return false;
}else{
$("#pageindex").val(number(value)-1);
$("form").submit();
}
}else if(id == "next"){
if(value == count){
return false;
}else{
$("#pageindex").val(number(value)+1);
$("form").submit();
}
}else{
$("#pageindex").val(count);
$("form").submit();
}
return false;//阻止a标签的网页跳转的功能
}
</script>
</head>
<body>
<div class="place">
<span>位置：</span>
<ul class="placeul">
<li><a href="#">首页</a></li>
<li><a href="#">就业信息</a></li>
</ul>
</div>
<form action="employ.action" method="post">
<div class="rightinfo">
<div class="tools">
<ul class="toolbar">
<li><span>班级名称：
<select style="border:1px solid #056dae" id="select" name="select">
<option>${requestscope.value }</option>
<c:foreach items="${requestscope.lst }" var="ele">
<option>${ele }</option>
</c:foreach>
</select>
</span></li>
</ul>
<ul class="toolbar1">
<li><span><img src="images/t05.png" /></span>下载</li>
</ul>
</div>
<table class="imgtable">
<thead>
<tr>
<th width="100px;">姓名</th>
<th>性别</th>
<th>毕业院校</th>
<th>专业</th>
<th>毕业时间</th>
<th>电话</th>
<th>就业单位</th>
<th>职位</th>
<th>工资</th>
<th>就业时间</th>
</tr>
</thead>
<tbody>
<c:foreach items="${requestscope.list }" var="stu" varstatus="s">
<tr>
<td class="imgtd">${stu.name }</td>
<td>${stu.sex }</td>
<td>${stu.school }</td>
<td>${stu.major }</td>
<td>${stu.bytime }</td>
<td>${stu.tel }</td>
<c:if test="${requestscope.lin[s.index] == null }" >
<td colspan="4" style="text-align:center;"><a href="addinfo.action?id=${stu.id }">填写就业信息</a></td>
</c:if>
<c:if test="${requestscope.lin[s.index] != null }">
<td>${requestscope.lin[s.index].companyname }</td>
<td>${requestscope.lin[s.index].post }</td>
<td>${requestscope.lin[s.index].salary }</td>
<td>${requestscope.lin[s.index].worktime }</td>
</c:if>
</tr>
</c:foreach>
</tbody>
</table>
<input type="hidden" name="pageindex" id="pageindex" value="${requestscope.index }">
<input type="hidden" name="pagecount" id="pagecount" value="${requestscope.page }">
<input type="hidden" name="pagenumber" id="pagenumber" value="${requestscope.number }">
<div class="pagin" id="page">
<div class="message">共<i class="blue"> ${requestscope.number } </i>条记录，共<i class="blue">
${requestscope.page }</i> 页，当前显示第 <i class="blue">${requestscope.index } </i>页</div>
<ul class="paginlist">
<li class="paginitem"><a href="javascript:;" class="paginitem" id="first"><span class="pagepre"></span></a></li>
<li class="paginitem"><a href="javascript:;" class="paginitem" id="previous">上一页</a></li>
<li class="paginitem"><a href="javascript:;" class="paginitem" id="next">下一页</a></li>
<li class="paginitem"><a href="javascript:;" class="paginitem" id="last"><span class="pagenxt"></span></a></li>
</ul>
</div>
</div>
</form>
</body>
</html>
5. page.js
$(function(){
$(".paginitem").click(subfun);
});
function subfun(){ //必须要知道我获取的是哪一个class,我点的是哪一个a标签
var id = $(this).attr("id");
var value = $("#pageindex").val(); //获取当前页
var count = $("#pagecount").val(); //获取尾页
if(id == "first"){
$("#pageindex").val(1); //将pageindex当前页
$("form").submit(); //通过a标签进行表单提交
}else if(id == "previous"){ //判断 本页是否为首页 如果为首页 如果部位首页的话 判断当前页是否为1 ==1首页 !=1 不是首页
if(number(value) == 1){
return false;
}else{
$("#pageindex").val(number(value)-1);
$("form").submit();
}
}else if(id == "next"){ //判断当前页是否为尾页 尾页如何判断 计算尾页 计算数据库的总条数 / 每页显示多少条 结果是否+1
if(value == count){
return false;
}else{
$("#pageindex").val(number(value)+1);
$("form").submit();
}
}else{
$("#pageindex").val(count);
$("form").submit();
}
return false; //阻止a标签的网页跳转的功能
}
效果图：
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