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修复登录数据库性能错误

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This commit is contained in:
FJY
2017-11-01 22:45:03 +08:00
parent 8955793848
commit b4da65a6e3
2 changed files with 95 additions and 68 deletions
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33
WebRoot/JSPhandle/login.jsp
View File

@@ -25,11 +25,10 @@
String users = request.getParameter("inputUser"); String users = request.getParameter("inputUser");
String pass = request.getParameter("inputPassword"); String pass = request.getParameter("inputPassword");
boolean flag = false; boolean flag = false;
PreparedStatement sql = null;
ResultSet rs = null;
Connection conn = null;
PreparedStatement vipsql = null;
ResultSet viprs = null;
session.setMaxInactiveInterval(1440); session.setMaxInactiveInterval(1440);
%> %>
@@ -40,6 +39,10 @@
String use = "root"; String use = "root";
String password = ""; String password = "";
Class.forName(driver); Class.forName(driver);
try {
PreparedStatement sql = null;
Connection conn = null;
ResultSet rs = null;
conn = DriverManager.getConnection(url, use, password); conn = DriverManager.getConnection(url, use, password);
sql = conn.prepareStatement("select * from user where userName=? and password=?"); sql = conn.prepareStatement("select * from user where userName=? and password=?");
sql.setString(1, users); sql.setString(1, users);
@@ -50,9 +53,18 @@
} }
rs.close(); rs.close();
sql.close(); sql.close();
conn.close();
} catch (Exception ex) {
ex.printStackTrace();
}
%> %>
<% <%
try { try {
PreparedStatement vipsql = null;
ResultSet viprs = null;
Connection conn = null;
vipsql = conn.prepareStatement( 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=?"); "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); vipsql.setString(1, users);
@@ -63,6 +75,9 @@
session.setAttribute("VIPuser", vipinfo); session.setAttribute("VIPuser", vipinfo);
session.setAttribute("Adminuser", adminfo); session.setAttribute("Adminuser", adminfo);
} }
viprs.close();
vipsql.close();
conn.close();
} catch (Exception ex) { } catch (Exception ex) {
ex.printStackTrace(); ex.printStackTrace();
} }
@@ -80,11 +95,9 @@
<jsp:forward page="login_fail.jsp" /> <jsp:forward page="login_fail.jsp" />
<% <%
} }
viprs.close();
vipsql.close();
rs.close();
sql.close();
conn.close();
%> %>
</body> </body>
</html> </html>

72
WebRoot/JSPhandle/login_show.jsp
View File

@@ -1,7 +1,9 @@
<%@ page language="java" import="java.util.*" contentType="text/html;charset=utf-8"%> <%@ page language="java" import="java.util.*"
contentType="text/html;charset=utf-8"%>
<% <%
String path = request.getContextPath(); String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%> %>
<%@page import="java.sql.Connection"%> <%@page import="java.sql.Connection"%>
<%@page import="java.sql.*"%> <%@page import="java.sql.*"%>
@@ -9,39 +11,36 @@ String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html> <html>
<head> <head>
<base href="<%=basePath%>"> <base href="<%=basePath%>">
<title>登录成功</title> <title>登录成功</title>
<meta http-equiv="pragma" content="no-cache"> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0"> <meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page"> <meta http-equiv="description" content="This is my page">
<!-- <!--
<link rel="stylesheet" type="text/css" href="styles.css"> <link rel="stylesheet" type="text/css" href="styles.css">
--> -->
</head> </head>
<body> <body>
<% <%
java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Date currentTime = new java.util.Date();//得到当前系统时间 java.util.Date currentTime = new java.util.Date();//得到当前系统时间
String str_date1 = formatter.format(currentTime); //将日期时间格式化 String str_date1 = formatter.format(currentTime); //将日期时间格式化
String str_date2 = currentTime.toString(); //将Date型日期时间转换成字符串形式 String str_date2 = currentTime.toString(); //将Date型日期时间转换成字符串形式
String driverClass = "com.mysql.jdbc.Driver"; String driverClass = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8"; String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
String user = "root"; String user = "root";
String password = ""; String password = "";
Connection conn = null;
PreparedStatement sql = null;
String counter = null; String counter = null;
Class.forName(driverClass); Class.forName(driverClass);
conn = DriverManager.getConnection(url, user, password);
Statement stmt = conn.createStatement();
Object user0 = session.getAttribute("actualuser"); Object user0 = session.getAttribute("actualuser");
/* out.println("欢迎"+user0);//输出当前session用户 */ /* out.println("欢迎"+user0);//输出当前session用户 */
%> %>
@@ -61,27 +60,42 @@ String str_date2 = currentTime.toString(); //将Date型日期时间转换成字
<% <%
counter = getIpAddr(request); counter = getIpAddr(request);
try { try {
Connection conn = null;
PreparedStatement sql = null;
conn = DriverManager.getConnection(url, user, password);
Statement stmt = conn.createStatement();
sql = conn.prepareStatement("update counter set visitCount=visitCount+1"); sql = conn.prepareStatement("update counter set visitCount=visitCount+1");
int rtn = sql.executeUpdate(); int rtn = sql.executeUpdate();
stmt.close();
sql.close();
conn.close();
} catch (Exception ex) { } catch (Exception ex) {
ex.printStackTrace(); ex.printStackTrace();
} }
try { try {
Connection conn = null;
PreparedStatement sql = null;
conn = DriverManager.getConnection(url, user, password);
Statement stmt = conn.createStatement();
sql = conn.prepareStatement("insert into iplist(IP,times,userName)values(?,?,?)"); sql = conn.prepareStatement("insert into iplist(IP,times,userName)values(?,?,?)");
sql.setString(1, counter); sql.setString(1, counter);
sql.setString(2, str_date1); sql.setString(2, str_date1);
sql.setString(3, (String)user0); sql.setString(3, (String) user0);
int rtn = sql.executeUpdate(); int rtn = sql.executeUpdate();
stmt.close();
sql.close();
conn.close();
} catch (Exception ex) { } catch (Exception ex) {
ex.printStackTrace(); ex.printStackTrace();
} }
%> %>
<% <%
stmt.close();
sql.close();
conn.close();
%> %>
登录成功. <br> 登录成功.
<% response.setHeader("refresh","0;url=../mainframe.jsp");%> <br>
</body> <%
response.setHeader("refresh", "0;url=../mainframe.jsp");
%>
</body>
</html> </html>