修复登录数据库性能错误

WebRoot/JSPhandle/login.jsp

@@ -25,11 +25,10 @@
 		String users = request.getParameter("inputUser");
 		String pass = request.getParameter("inputPassword");
 		boolean flag = false;
-		PreparedStatement sql = null;
-		ResultSet rs = null;
-		Connection conn = null;
-		PreparedStatement vipsql = null;
-		ResultSet viprs = null;
+		
+		
+		
+		
 		
 		session.setMaxInactiveInterval(1440);
 	%>
@@ -40,6 +39,10 @@
 		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);
@@ -50,9 +53,18 @@
 		}
 		rs.close();
 		sql.close();
+		conn.close();
+		
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
+		
 	%>
 	<%
 		try {
+		PreparedStatement vipsql = null;
+		ResultSet viprs = null;
+		Connection conn = null;
 			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);
@@ -63,6 +75,9 @@
 				session.setAttribute("VIPuser", vipinfo);
 				session.setAttribute("Adminuser", adminfo);
 			}
+			viprs.close();
+		vipsql.close();
+		conn.close();
 		} catch (Exception ex) {
 			ex.printStackTrace();
 		}
@@ -80,11 +95,9 @@
 	<jsp:forward page="login_fail.jsp" />
 	<%
 		}
-		viprs.close();
-		vipsql.close();
-		rs.close();
-		sql.close();
-		conn.close();
+		
+		
+		
 	%>
 </body>
 </html>

WebRoot/JSPhandle/login_show.jsp

@@ -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 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.*"%>
@@ -36,12 +38,9 @@ String str_date2 = currentTime.toString(); //将Date型日期时间转换成字
 		String user = "root";
 		String password = "";
 
-		Connection conn = null;
-		PreparedStatement sql = null;
 		String counter = null;
 		Class.forName(driverClass);
-		conn = DriverManager.getConnection(url, user, password);
-		Statement stmt = conn.createStatement();
+
 		Object user0 = session.getAttribute("actualuser");
 		/* 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);
 		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");
 			int rtn = sql.executeUpdate();
+			stmt.close();
+			sql.close();
+			conn.close();
 		} catch (Exception ex) {
 			ex.printStackTrace();
 		}
 		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.setString(1, counter);
 			sql.setString(2, str_date1);
 			sql.setString(3, (String) user0);
 			int rtn = sql.executeUpdate();
+			stmt.close();
+			sql.close();
+			conn.close();
 		} catch (Exception ex) {
 			ex.printStackTrace();
 		}
 	%>
 	<%
-			stmt.close();
-		sql.close();
-		conn.close();
+		
+	%>
+	登录成功.
+	<br>
+	<%
+		response.setHeader("refresh", "0;url=../mainframe.jsp");
 	%>
-   登录成功. <br>
-<% response.setHeader("refresh","0;url=../mainframe.jsp");%>  
 </body>
 </html>