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java开发就业信息管理系统

时间：2020-11-26 22:23:18 | 栏目：JAVA代码 | 点击：次

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>
<!-- 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="${requestScope.number }">
 <div class="pagin" id="page">
 <div class="message">共<i class="blue">&nbsp;${requestScope.number }&nbsp;</i>条记录，共<i class="blue">
 &nbsp;${requestScope.page }</i>&nbsp;页，当前显示第&nbsp;<i class="blue">${requestScope.index }&nbsp;</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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