修复所有数据库性能问题

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;
-			Connection conn = null;
-			PreparedStatement sql = null;
+			Class.forName(driverClass);
 		%>
 
 
@@ -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>