jsp连接mysqldelete操作

<%@ page language="java" contentType="text/html; charset=gb2312"
pageEncoding="gb2312" import="java.sql.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>update数据</title>
</head>
<body>
<center>

  <%
   String url = "jdbc:mysql://localhost:3306/test";
   String user = "root";
   String password = "110";
   Connection conn = null;
   PreparedStatement pstmt = null;
   String driverName = "com.mysql.jdbc.Driver";
   try {

Class.forName(driverName).newInstance();

conn = DriverManager.getConnection(url, user, password);

   } catch (ClassNotFoundException e) {
    out.println(e);
   } catch (SQLException e) {
    out.println("连接SQLserver数据库失败！！！！！！");
   }

   try {
    Statement stmt = conn.createStatement();
    String sql_delete = "delete from employee where id='2'";
    int result_delete = stmt.executeUpdate(sql_delete);
   } catch (SQLException e) {
    out.println("delete失败！");
   }
   try {
    if (pstmt != null) {
     pstmt.close();
     pstmt = null;
    }
    if (conn != null) {
     conn.close();
     conn = null;
    }
   } catch (Exception e) {
    out.println("数据库关闭异常！");
   }
   out.println("delete成功！");
  %>
</center>
</body>
</html>