java servlet结合Oracle搭建java的web开发环境

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
      
       Connection conn = null;
        Statement stmt = null;
        ResultSet rs = null;
        response.setContentType("text/html");
        response.setCharacterEncoding("gb2312");
        PrintWriter out = response.getWriter();
        out.println("<table border=1>");
        out.println("<tr><td>Content:</td></tr>");
        try {
           
            Class.forName("oracle.jdbc.driver.OracleDriver");//加载驱动
           conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "SCOTT", "Lh19870426");//创建连接
          stmt = conn.createStatement();//创建statement
            rs = stmt.executeQuery("select * from ORACLETESTDATABASE"); //得到结果集
            while(rs.next()){//遍历结果集
                out.println("<tr>");
                out.println("<td>" + rs.getString("name") + "</td>");//取出列值
                out.println("</tr>");
            }
            out.println("</table>");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                if(rs != null) {
                    rs.close();
                    rs = null;
                }
                if(stmt != null) {
                    stmt.close();
                    stmt= null;
                }
                if(conn != null) {
                    conn.close();
                    conn = null;
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
   
      
    }