基于Jsp+sql server数据库的学生成绩管理系统
需求分析
学生成绩管理系统需求服务对象为在校学生和在校交工
校教工. 整体分为学生模块和教师模块.
学生模块 需求 :
1:学生个体通过学号登录系统.
2:网页页面显示学生信息(学号,姓名,成绩,年龄,新版)
性别,联系方式,居住地)
3:学生个体可以修改自己的信息(姓名,性别,年龄,)
龄,联系方式,居住地)
4:学生无删除与增加自身信息的权限.
教师模块需求:
1:教师个体通过教工号登陆系统.
2:教师选择课程后查看所带班全部学生全部信息
3:教师登陆后允许修改学生成绩
4:教师可增加学生个体信息到系统表中
5:教师无删除学生个体信息权限
项目构思
设计学生信息表,包含字段如下: |
(学号,课程号,姓名,成绩,年龄,性别,联系方式,居住地) |
住地) |
设计教工表,包含字段如下: |
(课程号,教工号,课程名,教工姓名,职称) |
Register.jsp提供学生教师登录入口 |
registerForward.jsp判断用户身份 |
studentDispose.jsp显示学生信息 |
studentModification.jsp修改学生信息 |
teacherClass.jsp查找教师所带课程 |
Showinfo.jsp显示教师所带班级 学生信息 |
modificationScore.jsp显示要修改的学生成绩 |
finallyScoreModification.jsp修改成绩 |
addStudentInfo.jsp增添学生用户界面 |
finallAddinfo.jsp添加学生成绩 |
详细设计
学生信息表: |
(s# , c# ,sname , score,age,sex,telephone,home) |
教工表: |
(c#,cname,title,t#,tname) |
Register.jsp功能: |
分设两个入口:教师入口和学生入口 |
教师入口由教师工号字段进入 |
学生 入口由学生学号字段进入 |
RegisterForward.jsp功能: |
接收由register.html提交的字段,并依submit的value值判断提交按钮,并依此刷新到不同界面 |
studentDispose.jap功能:(由registerForward.jsp |
跳转) |
链接数据库学生信息表,查询字段等于s#的元组, |
将其显示在网页上,并设有修改按钮(提交至stud |
entModification.jsp),查询后关闭数据库 |
studentModification.jsp功能: |
接收由studentDispose.jsp传入的元组所有字段, |
链接数据库,查询到对应s#,修改学生信息表属性 |
值,显示修改成功或失败,返回登录入口. |
teacherClass.jsp功能: |
为教师提供课程选择功能. |
链接数据库教工表,查询t#等于字段的所有c#, |
页面显示教工的tname,title,并设有下拉列表框, |
显示cname,设进入按钮,跳转页面并提交cname |
字段.关闭数据库. |
ShowInfo.jsp功能: |
接收cname字段.链接数据库教工表,由cname字 |
段匹配c#,查询学生信息表,匹配c#字段,页面显 |
示对应行记录,标头显示tname,title,cname,行信 |
息右侧显示设修改超链接(超链接传入s#) |
底部设有增加学生信息超链接. |
Modification.jsp功能: |
接收S#字段,链接数据库学生信息表,读取匹配s |
#的字段行,页面显示s#,sname,score,设有修改按 |
钮.关闭数据库. |
finallyScoreModification.jsp功能: |
接收由modificationscore.jsp传入的s#,score. |
链接数据库学生信息表,匹配s#,更新score,页面 |
显示修改成功或失败. |
addStudentInfo.html功能: |
学生信息填入表单(接收cname,由showinfo提交) |
用以录入学生信息,设提交按钮. |
finallAddInfo.jsp功能: |
接收addStudentInfo.html的字段. |
链接数据库教工表,由cname查询c#. |
将接收的字段与c#作为记录插入到学生信息表 |
中,显示插入成功或失败. |
关闭数据库.5秒后跳转到showInfo页面. |
代码部分:
register.jsp
<%@ page pageEncoding="UTF-8" %>
<html>
<head><title>登录入口</title>
<script type="text/javascript" src="registerForward.js"></script>
</head>
<body>
<form name="form1" method="post" action="" >
<table align="center" width="300" height="100">
<tr><th>工号:</th><td><input type="text" name="jobNumber" ></td></tr>
<tr><th colspan="2"><input type="submit" value="教师入口" onClick="return teacherCheck()" />
<input type="submit" value="学生入口" onClick="return studentCheck()" /></th></tr>
</table>
</form>
</body>
</html>registerForward.js
function teacherCheck()
{
if(document.form1.jobNumber.value=='')
{
alert("工号不能为空!");
return false;
}
document.form1.mehtod="post";
document.form1.action="teacherClass.jsp";
document.form1.submit();
return true;
}
function studentCheck()
{
if(document.form1.jobNumber.value=='')
{
alert("工号不能为空!");
return false;
}
document.form1.action="studentDispose.jsp";
document.form1.submit();
}studentDispose.jsp
<%@ page pageEncoding="UTF-8" import ="java.sql.*" import="java.util.*" %>
<html>
<head><title>显示学生信息</title></head>
<body>
<%! String sNumber , sname , sex ,telephone , home ; int age ,score;%>
<%
String jobNumber = request.getParameter("jobNumber");
Connection con;
PreparedStatement pstmt;
ResultSet rs=null;
String sql=null;
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://localhost:1433;DatabaseName=LCBCom";
String user = "sa";
String userPassword = "123";
Class.forName(driver);
con = DriverManager.getConnection(url , user , userPassword);
sql="select s# , sname , score,age,sex,telephone,home from S where s#=? ";
pstmt = con.prepareStatement(sql);
pstmt.setString(1 , jobNumber);
rs = pstmt.executeQuery();
if(rs.next())
{
sNumber= rs.getString("s#"); //String 是 s#报错重复的变量s# , 为什么?
sname = rs.getString("sname");
score = rs.getInt("score");
age = rs.getInt("age");
sex = rs.getString("sex");
telephone = rs.getString("telephone");
home = rs.getString("home");
if(sex.equals("M"))
{
sex="男";
}
else
{
sex="女";
}
rs.close();
pstmt.close();
con.close();
//将学生用户信息存储在session中
session.setAttribute("sNumber" , sNumber ); //直接写变量,不用放在表达式里
session.setAttribute("sname" , sname );
session.setAttribute("score" , score );
session.setAttribute("age" , age );
session.setAttribute("sex" , sex );
session.setAttribute("telephone" , telephone);
session.setAttribute("home" , home );
}
else{
%>
<jsp:forward page="numberError.jsp" >
<jsp:param name="jobNumber" value="<%= jobNumber %>" />
</jsp:forward>
<%
}
%>
<h2 align="center">你的信息如下:</h2>
<form method="post" name=form2 action="studentModification.jsp" >
<table align="center">
<tr><th>学号:</th><td><%= sNumber %></td></tr>
<tr><th>姓名:</th><td><%= sname %></td></tr>
<tr><th>年龄:</th><td><%= age %></td></tr>
<tr><th>成绩:</th><td><%= score %></td></tr>
<tr><th>性别:</th><td><%= sex %></td></tr>
<tr><th>联系方式:</th><td><%= telephone %></td></tr>
<tr><th>居住地:</th><td><%= home %></td></tr>
<tr><th>修改个人信息:</th><td><input type="submit" value="提交" ></td></tr>
</body>
</html>numberError.jsp
<%@ page pageEncoding="UTF-8" %>
<html>
<body>
<%
String errorNumber = request.getParameter("jobNumber");
%>
<p>无法识别学号<%= errorNumber %>,请检查学号是否输入正确!</p>
<p>5秒后将返回登录界面</p>
<% response.setHeader("Refresh" , "5;url=register.jsp"); %>
</body>
</html>studentModification.jsp
<%@ page pageEncoding="UTF-8" import ="java.sql.*" import="java.util.*" %>
<html>
<body>
<%
session = request.getSession();
String sNumber = (String)session.getAttribute("sNumber");
String sname = (String)session.getAttribute("sname");
Object o;
o = session.getAttribute("score");
String score = o.toString();
o = session.getAttribute("age");
String age = o.toString();
String sex = (String)session.getAttribute("sex");
String telephone = (String)session.getAttribute("telephone");
String home = (String)session.getAttribute("home");
if(sex.equals("男"))
{
sex = "M";
}
else
{
sex = "W";
}
Connection con;
PreparedStatement pstmt;
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://localhost:1433;DatabaseName=LCBCom";
String user = "sa";
String userPassword = "123";
Class.forName(driver);
con = DriverManager.getConnection(url , user , userPassword);
String sql = "update S set s#=? , sname = ? , score = ? , age = ? , sex = ? , telephone = ? , home = ? where s# = ? ";
pstmt = con.prepareStatement(sql);
pstmt.setString(1 , sNumber);
pstmt.setString(2 , sname);
pstmt.setInt(3 , Integer.parseInt(score));
pstmt.setInt(4 , Integer.parseInt(age));
pstmt.setString(5 , sex);
pstmt.setString(6 , telephone);
pstmt.setString(7 , home);
pstmt.setString(8 , sNumber);
pstmt.executeUpdate();
pstmt.close();
con.close();
%>
<p>数据更新完成,将在5秒后返回主界面</p>
<% response.setHeader("Refresh" , "5;url=register.jsp"); %>
<p>已更新的数据如下:</p>
<p>成绩:<%= score %></p>
<p>姓名:<%= sname %></p>
<p>学号:<%= sNumber %></p>
<p>性别:<%= sex %></p>
<p>年龄:<%= age %></p>
<p>联系方式:<%= telephone %></p>
<p>居住地:<%= home %></p>
</body>
</html>teacherClass.jsp
<%@ page pageEncoding="UTF-8" import ="java.sql.*" import="java.util.*" %>
<html>
<body>
<%! String tname , title; %>
<%
String jobNumber = request.getParameter("jobNumber");
jobNumber.trim();
session.setAttribute("t#" ,jobNumber);
Connection con;
PreparedStatement pstmt;
ResultSet rs=null;
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://localhost:1433;DatabaseName=LCBCom";
String user = "sa";
String userPassword = "123";
Class.forName(driver);
con = DriverManager.getConnection(url , user , userPassword);
String sql = "select c# , cname , tname , title from T where t# = ?";
pstmt = con.prepareStatement(sql);
pstmt.setString(1 , jobNumber);
rs = pstmt.executeQuery();
String ArrayCname[] = new String[10];
String ArrayCnumber[] = new String[10];
int i=0;
while(rs.next())
{
tname = rs.getString("tname");
title = rs.getString("title");
ArrayCname[i] = rs.getString("cname");
ArrayCnumber[i] = rs.getString("c#");
//原来的设计里没有获取c#的想法,跳转到showinfo.jsp页面后,是根据cname的值查找c# ,然后又根据c#找的学生表的数据.这时要对学生表和教工表做外连接,不太好.
//所以现在直接把c#也请求过来,然后单选框的value是c#的值,而对应的显示的是cname. 之后只需要查找学生表即可.
i++;
}
rs.close();
pstmt.close();
con.close();
%>
<form name = "form3" action="showInfo.jsp" >
<table align="center">
<h2 align = "center" > 选择你的课程进入系统</h2>
<h3 align="center" ><%= tname %><%= title %>,请您选课</h3>
<%
int u=0;
while(u<i)
{
out.println(" "+" "+" "+" "+" "+"<h4 align=\"center \"><input type=\"radio\" name = \"Cnumber\" value="+ArrayCnumber[u]+">"+ ArrayCname[u]+"</h4>");
u++;
}
%>
<input type = "submit" value="进入" align="center">
</table>
</form>
</body>
</html>showInfo.jsp
s<%@ page pageEncoding="UTF-8" import ="java.sql.*" import="java.util.*" %>
<html>
<body>
<form name="form4" >
<table align="center" border="8" width="600" height="200">
<h3 align="center"> 学生信息:</h3>
<tr><td>学号</td><td>姓名</td><td>年龄</td><td>性别</td><td>联系方式</td><td>成绩</td><td>修改成绩</td></tr>
<%! String cnumber , snumber; %>
<%
session = request.getSession();
Object o = session.getAttribute("t#");
String c = o.toString();
cnumber = request.getParameter("Cnumber"); //接收到的是实际的c#值 , 变量写c# 报错说变量c重复定义,估计是#特殊字符
Connection con;
PreparedStatement pstmt;
ResultSet rs=null;
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://localhost:1433;DatabaseName=LCBCom";
String user = "sa";
String userPassword = "123";
Class.forName(driver);
con = DriverManager.getConnection(url , user , userPassword);
String sql = "select s# ,sname ,score ,age ,sex , telephone , home from S where c# = ?";
pstmt = con.prepareStatement(sql);
pstmt.setString(1 , cnumber);
rs = pstmt.executeQuery();
while(rs.next())
{
%>
<tr><td><%= rs.getString("s#") %></td>
<%
snumber = rs.getString("s#");
%>
<td><%= rs.getString("sname")%></td>
<td><%= rs.getInt("age") %></td>
<%
String sex = rs.getString("sex");
if(sex.equals("M"))
{
sex = "男";
}
else
{
sex = "女";
}
session.setAttribute("showInfo_snumber" , snumber);
session.setAttribute("showInfo_cnumber" , cnumber);
%>
<td><%= sex %></td>
<td><%= rs.getString("telephone") %></td>
<td><%= rs.getInt("score") %></td>
<td><a href = "Modification.jsp" >修改成绩</a></td>
</tr>
<%
}
%>
</table>
</form>
<h2 align="center"><a href = "addStudentInfo.jsp">创建学生身份信息</a></h2>
</body>
</html>addStudentInfo.jsp
<%@ page pageEncoding="UTF-8" import ="java.sql.*" import="java.util.*" %>
<html>
<body>
<%
session = request.getSession();
Object o = session.getAttribute("showInfo_cnumber");
String cnumber = o.toString();
%>
<form name = "form6" action = "finallAddInfo.jsp">
<table align="center" border="7" width="300" height="400">
<tr><td>姓名:</td><td><input type="text" name="sname"></td></tr>
<tr><td>年龄:</td><td><input type="text" name="age" ></td></tr>
<tr><td>性别:</td></tr>
<tr><td><input type="radio" name="sex" value="M" checked>男</td><td><input type="radio" name="sex" value="W" >女</tr>
<tr><td>学号:</td><td><input type="text" name="snumber"></td></tr>
<tr><td>联系方式:</td><td><input type="text" name="telephone" ></td></tr>
<tr><td>居住地:</td><td><input type="text" name="home" ></td></tr>
<tr><td>成绩:</td><td><input type = "text" name = "score" ></td></tr>
<tr><td><input type = "submit" value="添加"> </td></tr>
<tr><td><%= cnumber %></td></tr>
</body>
</html>finallAddInfo.jsp
<%@ page pageEncoding="UTF-8" import ="java.sql.*" import="java.util.*" %>
<html>
<body>
<%
String sname = request.getParameter("sname");
String age = request.getParameter("age");
String snumber = request.getParameter("snumber");
String telephone = request.getParameter("telephone");
String home = request.getParameter("home");
String sex = request.getParameter("sex");
String score = request.getParameter("score");
int age_new = Integer.parseInt(age);
int score_new = Integer.parseInt(score);
session = request.getSession();
Object o = session.getAttribute("showInfo_cnumber");
String cnumber = o.toString();
Connection con;
PreparedStatement pstmt;
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://localhost:1433;DatabaseName=LCBCom";
String user = "sa";
String userPassword = "123";
Class.forName(driver);
con = DriverManager.getConnection(url , user , userPassword);
String sql = "insert into S(s# ,c# ,age ,sex ,home ,telephone , score ,sname) values(?, ? ,? ,? ,?,? , ? ,?)";
pstmt = con.prepareStatement(sql);
pstmt.setString(1 , snumber);
pstmt.setString(2 , cnumber);
pstmt.setInt(3 , age_new);
pstmt.setString(4 , sex);
pstmt.setString(5 , home);
pstmt.setString(6 , telephone);
pstmt.setInt(7 , score_new);
pstmt.setString(8 ,sname);
pstmt.executeUpdate();
%>
<h2 align="center">学生成绩插入成功!将在5秒后返回登录界面</h2>
<% response.setHeader("Refresh" , "5;url=register.jsp"); %>
</body>
</html>modification.jsp
<%@ page pageEncoding="UTF-8" import ="java.sql.*" import="java.util.*" %>
<html>
<body>
<%
session = request.getSession();
Object o = session.getAttribute("showInfo_snumber");
String snumber = o.toString();
Connection con;
PreparedStatement pstmt;
ResultSet rs=null;
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://localhost:1433;DatabaseName=LCBCom";
String user = "sa";
String userPassword = "123";
Class.forName(driver);
con = DriverManager.getConnection(url , user , userPassword);
String sql = "select sname ,score from S where s# = ? ";
pstmt = con.prepareStatement(sql);
pstmt.setString(1 , snumber);
rs = pstmt.executeQuery();
rs.next();
String sname = rs.getString("sname");
int score = rs.getInt("score");
session.setAttribute("Modification_snumber" , snumber );
rs.close();
pstmt.close();
con.close();
%>
<form name = "form5" action = "finallyScoreModification.jsp" >
<table align = "center" >
<h1 align="center">成绩修订</h1>
<tr><th>姓名:</th><td><%= sname %></td></tr>
<tr><th>学号:</th><td><%= snumber %></td></tr>
<tr><th>当前成绩:</th><td><%= score %></td></tr>
<tr><th>修订后的成绩:</th><td><input type = "text" name = "score" ></td></tr>
<tr><td align="center" colspan = "2"><input type = "submit" value = "修改" ></td></tr>
</table>
</form>
</body>
</html>
finallyScoreModification.jsp
<%@ page pageEncoding="UTF-8" import ="java.sql.*" import="java.util.*" %>
<html>
<body>
<%! String snumber; %>
<%
session = request.getSession();
String score = request.getParameter("score");
int int_score = Integer.parseInt(score);
Object o = session.getAttribute("Modification_snumber");
snumber = o.toString();
Connection con;
PreparedStatement pstmt;
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://localhost:1433;DatabaseName=LCBCom";
String user = "sa";
String userPassword = "123";
Class.forName(driver);
con = DriverManager.getConnection(url , user , userPassword);
String sql = "update S set score = ? where s# = ?" ;
pstmt = con.prepareStatement(sql);
pstmt.setInt(1 , int_score);
pstmt.setString(2 , snumber);
pstmt.executeUpdate();
%>
<h2 align="center">修改成绩成功!将在5秒后返回登录界面</h2>
<% response.setHeader("Refresh" , "5;url=register.jsp"); %>
</body>
</html>数据库建表代码:
use LCBCom
--s# , c# ,sname , score,age,sex,telephone,home
create table S
(
id int identity(1,1),
s# varchar(20) constraint PK_S_s# primary key,
c# varchar(20) ,
sname char(6) default '',
score int check(score<100 and score >0),
age int check(age<50 and age>0),
telephone char(20) default '',
home varchar(40) default ''
)
use LCBCom
alter table S
add sex char(1)
go -- 忘加了sex
use LCBCom
--s# , c# ,sname , score,age,sex,telephone,home
alter table S
add foreign key(c#) references T(c#)
on update cascade
on delete no action
go
--on 之后没格式没有{} , 直接写关键字,而且在创建外键之前必须已近存在外键
use LCBCom
--c#,cname,title,t#,tname
create table T
(
c# varchar(20) constraint PK_T_c# primary key,
cname char(10) ,
tname char(4) ,
t# varchar(20),
title char(6)
)
use LCBCom
insert into dbo.S(s# , c# , sname , score , age ,sex,telephone , home)
values ('201665748339' , '0010' ,'王佳 ',34 ,21 ,'W ' ,'18865673382' , '哈尔滨江北区学海街1006室')
go
use LCBCom
insert into T(c# ,cname ,tname ,t# , title)
values('0000' ,'javaWeb开发教程 ', '张娜' , '20160000' ,'教授')
go
选取部分源数据:
T表源数据示例:
c# cname tname t# title
0000 javaWeb开发教程 张娜 20160000 教授
0001 数据结构 严为民 20160001 副教授
0010 c语言程序设计 谭浩强 20160010 讲师
0011 python程序设计教程 林兴良 20160011 讲师
S表源数据示例:
s# c# sname score age sex telephone home
201662025056 0000 张三 78 20 M 18846791756 哈尔滨江北区学海街1006室
201662979907 0001 李四 88 19 W 18846782389 哈尔滨江北区学海街1006室
201666387629 0001 王五 89 19 M 18837893338 哈尔滨江北区学海街1006室
201665748339 0010 王佳 34 21 W 18865673382 哈尔滨江北区学海街1006室
最后,链接数据库用到的用户名是 sa 密码:123 可以自行按需求更改
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