📄 yanzheng9.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%@ page import="DataBase.DBConn"%>
<%@ page import="java.sql.ResultSet"%>
<html>
<head>
<%!
int id2; %>
</head>
<body>
<%
request.setCharacterEncoding("GBK");
int id1=Integer.parseInt(request.getParameter("id"));
String tgan=request.getParameter("t1");
String dan=request.getParameter("cate");%>
<% DBConn db=new DBConn();
String sql="select * from type3 where tgan='"+tgan+"'";
String sql2="Update type3 set tgan='"+tgan+"',dan='"+dan+"' where id='"+id1+"'";
ResultSet rs=db.Query(sql);%>
<%if(rs.next()){
id2=rs.getInt("id");
}else{
id2=id1;
}
%>
<%if(id1!=id2){%>
<script language=javascript>
alert("此试题一存在！修改失败！");
history.back();
</script>
<%}else{ DBConn db1=new DBConn();
db1.Update(sql2);
%>
<script language=javascript>
alert("修改成功！");
window.navigate("type_3.jsp");
</script>
<%} %>
</body>
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