📄 deal_add_ps.jsp
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<%@ page language="java" contentType="text/html; charset=GB2312" import="utility.DBConnection,java.sql.*"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312">
<title></title>
</head>
<body>
<table width="100%" border="1">
<tr>
<td bgcolor="#00CCFF"><div align="center">
<h1>显示平时考试添加分数处理信息</h1>
</div></td>
</tr>
<tr>
<td>
<center>
<pre>
<%
Connection con=DBConnection.getConnection();
Statement stmt=con.createStatement();
String examNo=null;
String stuUnifiedNo=null;
String courseGrade=null;
examNo=request.getParameter("examNo");
stuUnifiedNo=request.getParameter("stuUnifiedNo");
if ((examNo.equals("") || examNo==null)&& (stuUnifiedNo.equals("") ||stuUnifiedNo==null))
{
%>
<center><h3>请重新打开页面输入考号和学号信息</h3></center>
<%
}
else
{
courseGrade=request.getParameter("courseGrade");
System.out.println(courseGrade);
int cg=Integer.parseInt(courseGrade);
boolean judge11=false;
boolean judge12=false;
ResultSet rs1=stmt.executeQuery("select * from student where stuUnifiedNo='"+stuUnifiedNo+"'");
if (rs1.next()){ judge11=true;}//该学号是存在的
if (judge11==false)
{
%>
<center><h3>该学号不存在</h3></center>
<%
}
ResultSet rs2=stmt.executeQuery("select * from exams where examNO='"+examNo+"'");
if (rs2.next()) {judge12=true;}//该考号是存在的
if (judge12==false)
{
%>
<center><h3>该考号不存在</h3></center>
<%
}
if (judge11==true && judge12==true)//外码约束满足
{
ResultSet rs3=stmt.executeQuery(
"select * from examList where (examNo='"+examNo+"') and ( stuUnifiedNo='"+stuUnifiedNo+"')");
if (rs3.next()==true)
{
%>
<center><h3>该条信息已经存在</h3></center>
<%
}//表示重复
else
{
stmt.executeUpdate("insert into examList values('"
+stuUnifiedNo+"','"+examNo+"',"+cg+")");
%>
<center><h3>操作成功</h3></center>
<%
}
}
}
con.close();
%>
</pre>
</center>
</td>
</tr>
</table>
</body>
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