<%@ page language="java" import="java.sql.*"
contentType="text/html;charset=utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
My JSP 'check.jsp' starting page
<%
request.setCharacterEncoding("utf-8");
String users = request.getParameter("inputUser");
String pass = request.getParameter("inputPassword");
boolean flag = false;
session.setMaxInactiveInterval(1440);
%>
<%
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
String use = "root";
String password = "";
Class.forName(driver);
try {
PreparedStatement sql = null;
Connection conn = null;
ResultSet rs = null;
conn = DriverManager.getConnection(url, use, password);
sql = conn.prepareStatement("select * from user where userName=? and password=?");
sql.setString(1, users);
sql.setString(2, pass);
rs = sql.executeQuery();
if (rs.next()) {
flag = true;
}
rs.close();
sql.close();
conn.close();
} catch (Exception ex) {
ex.printStackTrace();
}
%>
<%
try {
PreparedStatement vipsql = null;
ResultSet viprs = null;
Connection conn = null;
conn = DriverManager.getConnection(url, use, password);
vipsql = conn.prepareStatement(
"select userName,case when VIP = 1 then 'VIP用户' else '普通用户' end as VIP,case when Administrator = 1 then '管理员' else '' end as Administrator from show_user where userName=?");
vipsql.setString(1, users);
viprs = vipsql.executeQuery();
while (viprs.next()) {
String vipinfo = viprs.getString("VIP");
String adminfo = viprs.getString("Administrator");
session.setAttribute("VIPuser", vipinfo);
session.setAttribute("Adminuser", adminfo);
}
viprs.close();
vipsql.close();
conn.close();
} catch (Exception ex) {
ex.printStackTrace();
}
%>
<%
if (flag == true) {
session.setAttribute("actualuser", users);
application.setAttribute("ul",users);
%>
<%
} else if (flag == false) {
%>
<%
}
%>