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"
);
}
}
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2. editStudent_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
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"
);
}
}
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3. employ_action.java
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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);
}
}
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4. employ.jsp
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<%@ 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
|
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$(
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：
