java开发就业信息管理系统

java开发就业信息管理系统

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 cla = cs.getClasses();

List lst = new ArrayList();

for(classes ele : cla){

String name = ele.getName();

lst.add(name);

}

studentService ss = new studentServiceImpl();

List lstu = ss.getStudentPage(1, 10);

infoService is = new infoServiceImpl(); //连接到就业信息表里

List lin = new ArrayList();

for(student ele : lstu){

info info = new info();

info = is.getInfoByStudentId(ele.getId());

lin.add(info);

}

List 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 cla = cs.getClasses();

List lst = new ArrayList();

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 lin = new ArrayList();

if(value.equals("全部")){

List 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 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 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 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" %>

位置：

${requestScope.value }

${ele }

 ${requestScope.page } 页，当前显示第 ${requestScope.index } 页

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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