修复所有数据库性能问题

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 -->
 	<%