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

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> <> <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); $("form").submit(); } return false;//阻止a标签的网页跳转的功能 } </script> </head> <body> <div> <span>位置：</span> <ul> <li><a href="#">首页</a></li> <li><a href="#">就业信息</a></li> </ul> </div> <form action="employ.action" method="post"> <div> <div> <ul> <li><span>班级名称： <select id="select" name="select"> <option>${requestScope.value }</option> <c:forEach items="${requestScope.lst }" var="ele"> <option>${ele }</option> </c:forEach> </select> </span></li> </ul> <ul> <li><span><img src="images/t05.png" /></span>下载</li> </ul> </div> <table> <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="${requestScope.list }" var="stu" varStatus="s"> <tr> <td>${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"><a href="addInfo.action">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 id="page"> <div>共<i>${requestScope.number }</i>条记录，共<i> ${requestScope.page }</i>页，当前显示第<i>${requestScope.index }</i>页</div> <ul> <li><a href="javascript:;" id="first"><span></span></a></li> <li><a href="javascript:;" id="previous">上一页</a></li> <li><a href="javascript:;" id="next">下一页</a></li> <li><a href="javascript:;" id="last"><span></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：

以上就是本文的全部内容，希望对大家的学习有所帮助。