修复所有数据库性能问题

WebRoot/JSPhandle/admin_delete.jsp

@@ -37,6 +37,7 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
 		Connection conn = DriverManager.getConnection(url, use, password);
 		PreparedStatement sql = conn
 				.prepareStatement("delete from adminstrator_record where AdminName=?");
@@ -47,6 +48,9 @@
 		}
 		sql.close();
 		conn.close();
+		 }catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是插入成功 -->
 	<%

WebRoot/JSPhandle/admin_insert.jsp

@@ -39,6 +39,7 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
 		Connection conn = DriverManager.getConnection(url, use, password);
 		PreparedStatement sql = conn
 				.prepareStatement("insert into adminstrator_record(AdminNo,AdminName,Adminsex,Adminjob)values(?,?,?,?)");
@@ -52,6 +53,9 @@
 		}
 		sql.close();
 		conn.close();
+		 }catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是插入成功 -->
 	<%

WebRoot/JSPhandle/admin_update.jsp

@@ -39,6 +39,7 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
 		Connection conn = DriverManager.getConnection(url, use, password);
 		PreparedStatement sql = conn
 				.prepareStatement("update adminstrator_record set AdminNo=?,AdminSex=?,AdminJob=? where AdminName=?");
@@ -52,6 +53,9 @@
 		}
 		sql.close();
 		conn.close();
+		 }catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是插入成功 -->
 	<%

WebRoot/JSPhandle/adminjob_delete.jsp

@@ -37,6 +37,7 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
 		Connection conn = DriverManager.getConnection(url, use, password);
 		PreparedStatement sql = conn
 				.prepareStatement("delete from administrator_job where AdminJob=?");
@@ -47,6 +48,9 @@
 		}
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是插入成功 -->
 	<%

WebRoot/JSPhandle/adminjob_insert.jsp

@@ -37,6 +37,7 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
 		Connection conn = DriverManager.getConnection(url, use, password);
 		PreparedStatement sql = conn
 				.prepareStatement("insert into administrator_job(AdminJob,AdminDuty)values(?,?)");
@@ -48,6 +49,9 @@
 		}
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是插入成功 -->
 	<%

WebRoot/JSPhandle/change_pass_update.jsp

@@ -33,7 +33,8 @@ String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.
     String url="jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";    
     String use = "root";     
     String password = "";    
-    Class.forName(driver);    
+    Class.forName(driver);  
+    try{  
     Connection conn= DriverManager.getConnection(url,use,password);    
     PreparedStatement sql =conn.prepareStatement("update user set password=? where userName=?");   
     sql.setString(1,pass);
@@ -41,6 +42,9 @@ String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.
     int rtn=sql.executeUpdate();  
     sql.close();  
     conn.close();  
+    } catch (Exception ex) {
+			ex.printStackTrace();
+		}
     %>  
     <% 
     out.println("<script language=javascript>alert('修改成功！');window.location.href='index.html'</script>");

WebRoot/JSPhandle/forget_pass_check.jsp

@@ -26,9 +26,7 @@
 		String pass = request.getParameter("inputPassword");
 		String phone = request.getParameter("PhoneNumber");
 		boolean flag = false;
-		PreparedStatement sql = null;
+		
-		ResultSet rs = null;
-		Connection conn = null;
 
 	%>
 
@@ -38,6 +36,10 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
+		PreparedStatement sql = null;
+		ResultSet rs = null;
+		Connection conn = null;
 		conn = DriverManager.getConnection(url, use, password);
 		sql = conn.prepareStatement("select * from user where userName=? and Email=? and phoneNum=?");
 		sql.setString(1, users);
@@ -47,6 +49,12 @@
 		if (rs.next()) {
 			flag = true;
 		}
+			rs.close();
+		sql.close();
+		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是正确的登录用户 -->
 	<%
@@ -58,9 +66,7 @@
 		} else if (flag == false) {
 		out.println("<script language=javascript>alert('邮箱或手机输入有误，修改失败');window.location.href='index.html'</script>");
 		}
-		rs.close();
+		
-		sql.close();
-		conn.close();
 	%>
 </body>
 </html>

WebRoot/JSPhandle/job_delete.jsp

@@ -37,6 +37,7 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
 		Connection conn = DriverManager.getConnection(url, use, password);
 		PreparedStatement sql = conn
 				.prepareStatement("delete from administrator_job where AdminJob=?");
@@ -47,6 +48,9 @@
 		}
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是插入成功 -->
 	<%

WebRoot/JSPhandle/limits_check_delete.jsp

@@ -23,9 +23,7 @@
 	<%
 		request.setCharacterEncoding("utf-8");
 		boolean flag = false;
-		PreparedStatement sql = null;
+		
-		ResultSet rs = null;
-		Connection conn = null;
 		if (session.getAttribute("actualuser") == null) {
 			out.println(
 					"<script language=javascript>alert('登录超时 (1440 秒未活动)或未登录，请重新登录。');window.location.href='index.html'</script>");
@@ -41,6 +39,10 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
+		PreparedStatement sql = null;
+		ResultSet rs = null;
+		Connection conn = null;
 		conn = DriverManager.getConnection(url, use, password);
 		sql = conn.prepareStatement("select * from show_user where userName=? and Administrator=1");
 		sql.setString(1, users);
@@ -51,6 +53,9 @@
 		rs.close();
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是管理员 -->
 	<%

WebRoot/JSPhandle/limits_check_manage.jsp

@@ -23,9 +23,7 @@
 	<%
 		request.setCharacterEncoding("utf-8");
 		boolean flag = false;
-		PreparedStatement sql = null;
+		
-		ResultSet rs = null;
-		Connection conn = null;
 		if (session.getAttribute("actualuser") == null) {
 			out.println(
 					"<script language=javascript>alert('登录超时 (1440 秒未活动)或未登录，请重新登录。');window.location.href='index.html'</script>");
@@ -41,6 +39,10 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
+		PreparedStatement sql = null;
+		ResultSet rs = null;
+		Connection conn = null;
 		conn = DriverManager.getConnection(url, use, password);
 		sql = conn.prepareStatement("select * from show_user where userName=? and Administrator=1");
 		sql.setString(1, users);
@@ -51,6 +53,10 @@
 		rs.close();
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
+		
 	%>
 	<!-- 判断是否是管理员 -->
 	<%

WebRoot/JSPhandle/limits_check_show.jsp

@@ -23,9 +23,7 @@
 	<%
 		request.setCharacterEncoding("utf-8");
 		boolean flag = false;
-		PreparedStatement sql = null;
+		
-		ResultSet rs = null;
-		Connection conn = null;
 		if (session.getAttribute("actualuser") == null) {
 			out.println(
 					"<script language=javascript>alert('登录超时 (1440 秒未活动)或未登录，请重新登录。');window.location.href='index.html'</script>");
@@ -41,6 +39,10 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
+		PreparedStatement sql = null;
+		ResultSet rs = null;
+		Connection conn = null;
 		conn = DriverManager.getConnection(url, use, password);
 		sql = conn.prepareStatement("select * from show_user where userName=? and Administrator=1");
 		sql.setString(1, users);
@@ -51,6 +53,9 @@
 		rs.close();
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是管理员 -->
 	<%

WebRoot/JSPhandle/login.jsp

@@ -65,6 +65,7 @@
 		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);

WebRoot/JSPhandle/login_show.jsp

@@ -1,47 +1,53 @@
-<%@ page language="java" import="java.util.*"
+<%@ page language="java" import="java.util.*" contentType="text/html;charset=utf-8"%>  
-	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.*"%>
 <%@page import="java.sql.DriverManager"%>
-
+  
-<!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">  
-    -->
+    -->  
-
+  
-</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 url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 		String user = "root";
 		String password = "";
 
+		Object user0 = session.getAttribute("actualuser");
 		String counter = null;
 		Class.forName(driverClass);
-
+		try{
-		Object user0 = session.getAttribute("actualuser");
+		Connection conn = null;
+		conn = DriverManager.getConnection(url, user, password);
+		Statement stmt = conn.createStatement();
+		stmt.close();
+			conn.close();
+		} catch (Exception ex) {
+						ex.printStackTrace();
+					}
 		/* out.println("欢迎"+user0);//输出当前session用户  */
 	%>
 	<%!public String getIpAddr(HttpServletRequest request) {
@@ -57,45 +63,37 @@
 		}
 		return ip;
 	}%>
-	<%
+			<%
-		counter = getIpAddr(request);
+				counter = getIpAddr(request);
-		try {
+					try {
+					Connection conn = null;
+					PreparedStatement sql = null;
+						sql = conn.prepareStatement("update counter set visitCount=visitCount+1");
+						int rtn = sql.executeUpdate();
+					sql.close();
+		conn.close();
+					} catch (Exception ex) {
+						ex.printStackTrace();
+					}
+			try {
 			Connection conn = null;
 			PreparedStatement sql = null;
-			conn = DriverManager.getConnection(url, user, password);
+						sql = conn.prepareStatement("insert into iplist(IP,times,userName)values(?,?,?)"); 
-			Statement stmt = conn.createStatement();
+						sql.setString(1, counter);
-			sql = conn.prepareStatement("update counter set visitCount=visitCount+1");
+						sql.setString(2, str_date1);
-			int rtn = sql.executeUpdate();
+						sql.setString(3, (String)user0);
-			stmt.close();
+						int rtn = sql.executeUpdate();
-			sql.close();
+				sql.close();
-			conn.close();
+		conn.close();
-		} catch (Exception ex) {
+				} catch (Exception ex) {
-			ex.printStackTrace();
+					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();
-		}
-	%>
-	<%
 		
 	%>
-	登录成功.
+   登录成功. <br>
-	<br>
+<% response.setHeader("refresh","0;url=../mainframe.jsp");%>  
-	<%
+  </body>  
-		response.setHeader("refresh", "0;url=../mainframe.jsp");
+</html> 
-	%>
-</body>
-</html>

WebRoot/JSPhandle/signin_insert.jsp

@@ -35,7 +35,8 @@ String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.
     String url="jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";    
     String use = "root";     
     String password = "";    
-    Class.forName(driver);    
+    Class.forName(driver);  
+    try{  
     Connection conn= DriverManager.getConnection(url,use,password);    
     PreparedStatement sql =conn.prepareStatement("insert into user(userName,password,Email,phoneNum)values(?,?,?,?)");  
     sql.setString(1,users);  
@@ -45,6 +46,9 @@ String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.
     int rtn=sql.executeUpdate();  
     sql.close();  
     conn.close();  
+    } catch (Exception ex) {
+			ex.printStackTrace();
+		}
     %>  
     <% response.setHeader("refresh","0;url=../signin_show.jsp");%>  
   </body>  

WebRoot/JSPhandle/user_delete.jsp

@@ -37,6 +37,7 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
 		Connection conn = DriverManager.getConnection(url, use, password);
 		PreparedStatement sql = conn
 				.prepareStatement("delete from user where userName=?");
@@ -47,6 +48,9 @@
 		}
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是插入成功 -->
 	<%

WebRoot/JSPhandle/user_update.jsp

@@ -40,6 +40,7 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
 		Connection conn = DriverManager.getConnection(url, use, password);
 		PreparedStatement sql = conn
 				.prepareStatement("update user set userName=?,Email=?,Administrator = (case ? when '是' then '1'else '0' end ),VIP = (case ? when '是' then '1'else '0' end )where userName=?;");
@@ -54,6 +55,9 @@
 		}
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是插入成功 -->
 	<%

WebRoot/JSPhandle/vipdownload_check_show.jsp

@@ -23,9 +23,7 @@
 	<%
 		request.setCharacterEncoding("utf-8");
 		boolean flag = false;
-		PreparedStatement sql = null;
+		
-		ResultSet rs = null;
-		Connection conn = null;
 		if (session.getAttribute("actualuser") == null) {
 			out.println(
 					"<script language=javascript>alert('登录超时 (1440 秒未活动)或未登录，请重新登录。');window.location.href='index.html'</script>");
@@ -41,6 +39,10 @@
 		String use = "root";
 		String password = "";
 		Class.forName(driver);
+		try{
+		PreparedStatement sql = null;
+		ResultSet rs = null;
+		Connection conn = null;
 		conn = DriverManager.getConnection(url, use, password);
 		sql = conn.prepareStatement("select * from show_user where userName=? and VIP=1");
 		sql.setString(1, users);
@@ -51,6 +53,9 @@
 		rs.close();
 		sql.close();
 		conn.close();
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
 	%>
 	<!-- 判断是否是管理员 -->
 	<%

WebRoot/add_admin.jsp

@@ -62,11 +62,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from administrator_job");
@@ -76,14 +77,16 @@
 								<option value="<%=rs.getString("AdminJob")%>"><%=rs.getString("AdminJob")%></option>
 								<%
 									}
+										sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</select>
 						</div>

WebRoot/change_admin.jsp

@@ -41,11 +41,11 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from adminstrator_record");
@@ -55,14 +55,16 @@
 								<option value="<%=rs.getString("AdminName")%>"><%=rs.getString("AdminName")%></option>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</select>
 						</div>

WebRoot/change_user.jsp

@@ -62,11 +62,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+								Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
+										
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from administrator_job");
@@ -76,14 +77,16 @@
 								<option value="<%=rs.getString("AdminJob")%>"><%=rs.getString("AdminJob")%></option>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</select>
 						</div>

WebRoot/delete_admin.jsp

@@ -42,10 +42,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
 										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
@@ -56,14 +58,16 @@
 								<option value="<%=rs.getString("AdminName")%>"><%=rs.getString("AdminName")%></option>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</select>
 						</div>

WebRoot/delete_job.jsp

@@ -42,11 +42,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
+										
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from administrator_job");
@@ -56,14 +57,16 @@
 								<option value="<%=rs.getString("AdminJob")%>"><%=rs.getString("AdminJob")%></option>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</select>
 						</div>

WebRoot/delete_user.jsp

@@ -42,11 +42,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
+										
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from show_user");
@@ -56,14 +57,16 @@
 								<option value="<%=rs.getString("userName")%>"><%=rs.getString("userName")%></option>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</select>
 						</div>

WebRoot/edit_admin.jsp

@@ -33,9 +33,7 @@
 			String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 			String user = "root";
 			String password = "";
-			ResultSet rs = null;
+			Class.forName(driverClass);
-			Connection conn = null;
-			PreparedStatement sql = null;
 		%>
 
 
@@ -48,7 +46,9 @@
 			<div class="col-sm-12 col-lg-9 col-md-9">
 			<%
 								try {
-									Class.forName(driverClass);
+									ResultSet rs = null;
+			Connection conn = null;
+			PreparedStatement sql = null;
 									conn = DriverManager.getConnection(url, user, password);
 									Statement stmt = conn.createStatement();
 									sql = conn.prepareStatement("select * from adminstrator_record where AdminName=?");
@@ -83,6 +83,10 @@
 					</div>
 					<%
 								}
+								sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 								} catch (Exception ex) {
 									ex.printStackTrace();
 								}
@@ -93,7 +97,9 @@
 							<select name="job" class="form-control" name="job">
 								<%
 									try {
-										Class.forName(driverClass);
+										ResultSet rs = null;
+			Connection conn = null;
+			PreparedStatement sql = null;
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from administrator_job");
@@ -103,14 +109,16 @@
 								<option value="<%=rs.getString("AdminJob")%>"><%=rs.getString("AdminJob")%></option>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</select>
 						</div>

WebRoot/edit_user.jsp

@@ -33,9 +33,7 @@
 			String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 			String user = "root";
 			String password = "";
-			ResultSet rs = null;
+			Class.forName(driverClass);
-			Connection conn = null;
-			PreparedStatement sql = null;
 		%>
 
 
@@ -48,7 +46,10 @@
 			<div class="col-sm-12 col-lg-9 col-md-9">
 				<%
 					try {
-						Class.forName(driverClass);
+					ResultSet rs = null;
+			Connection conn = null;
+			PreparedStatement sql = null;
+						
 						conn = DriverManager.getConnection(url, user, password);
 						Statement stmt = conn.createStatement();
 						sql = conn.prepareStatement("select userName,Email, VIP,Administrator from show_user where userName=?");
@@ -121,14 +122,16 @@
 					</div>
 					<%
 						}
+						sql.close();
+						rs.close();
+						conn.close();
+						stmt.close();
 						} catch (Exception ex) {
 							ex.printStackTrace();
 						}
 					%>
 					<%
-						sql.close();
+						
-						rs.close();
-						conn.close();
 					%>
 				</form>
 

WebRoot/exhibition_admin.jsp

@@ -114,11 +114,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
+										
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from adminstrator_record");
@@ -153,6 +154,10 @@
 						</div>
 						<%
 									}
+									sql.close();
+			rs.close();
+			conn.close();
+			stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
@@ -162,9 +167,7 @@
 			</div>
 		</div>
 		 <%
-			sql.close();
+			
-			rs.close();
-			conn.close();
 		%> 
 		<%@ include file="module/footer.jsp"%>
 	</div>

WebRoot/manage_user.jsp

@@ -41,11 +41,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
+										
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from show_user");
@@ -55,14 +56,16 @@
 								<option value="<%=rs.getString("userName")%>"><%=rs.getString("userName")%></option>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</select>
 						</div>

WebRoot/show_admin.jsp

@@ -55,11 +55,11 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
-									ResultSet rs = null;
+									Class.forName(driverClass);
-									Connection conn = null;
-									PreparedStatement sql = null;
 									try {
-										Class.forName(driverClass);
+										ResultSet rs = null;
+										Connection conn = null;
+										PreparedStatement sql = null;
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from adminstrator_record");
@@ -75,14 +75,16 @@
 								</tr>
 								<%
 									}
+										sql.close();
+										rs.close();
+										conn.close();
+										stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 <%
-			sql.close();
+			
-			rs.close();
-			conn.close();
 		%>
 							</table>
 						</div>
@@ -121,7 +123,10 @@
 													</tr>
 													<%
 														try {
-															Class.forName(driverClass);
+															ResultSet rs = null;
+															Connection conn = null;
+															PreparedStatement sql = null;
+												
 															conn = DriverManager.getConnection(url, user, password);
 															Statement stmt = conn.createStatement();
 															sql = conn.prepareStatement("select * from admin_view");
@@ -137,6 +142,10 @@
 													</tr>
 													<%
 														}
+															sql.close();
+															rs.close();
+															conn.close();
+															stmt.close();
 														} catch (Exception ex) {
 															ex.printStackTrace();
 														}
@@ -158,9 +167,7 @@
 			</div>
 		</div>
 		<%
-			sql.close();
+			
-			rs.close();
-			conn.close();
 		%>
 		<%@ include file="module/footer.jsp"%>
 	</div>

WebRoot/show_adminjob.jsp

@@ -53,11 +53,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
+										
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from administrator_job");
@@ -71,14 +72,16 @@
 								</tr>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</table>
 						</div>

WebRoot/show_user.jsp

@@ -54,11 +54,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
+										
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement(
@@ -74,14 +75,16 @@
 								</tr>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</table>
 						</div>

WebRoot/x2_resource.jsp

@@ -56,11 +56,12 @@
 									String url = "jdbc:mysql://localhost:3306/db_school?useUnicode=true&characterEncoding=utf-8";
 									String user = "root";
 									String password = "";
+									Class.forName(driverClass);
+									try {
 									ResultSet rs = null;
 									Connection conn = null;
 									PreparedStatement sql = null;
-									try {
+										
-										Class.forName(driverClass);
 										conn = DriverManager.getConnection(url, user, password);
 										Statement stmt = conn.createStatement();
 										sql = conn.prepareStatement("select * from x2_resourse");
@@ -77,14 +78,16 @@
 								</tr>
 								<%
 									}
+									sql.close();
+									rs.close();
+									conn.close();
+									stmt.close();
 									} catch (Exception ex) {
 										ex.printStackTrace();
 									}
 								%>
 								<%
-									sql.close();
+									
-									rs.close();
-									conn.close();
 								%>
 							</table>
 						</div>