Java 结果集以相反的顺序显示

Question

我正在使用以下代码测试一个非常简单的 Java webapp doGet() 方法：

protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException
{
    try 
    {
        Class.forName("oracle.jdbc.OracleDriver");
    }
    catch(ClassNotFoundException ex)
    {
            System.out.println(ex);
    }

    String sql_qrp="select * from HR.EMP_MGMT";

    try
    {
        Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521/XE","HR","HR");

        try(Statement stm=con.createStatement())
        {
            ResultSet rs=stm.executeQuery(sql_qrp);

            while(rs.next())
            {
                int emp_ID=rs.getInt("EMP_ID");
                String name=rs.getString("NAME");
                String address=rs.getString("ADDRESS");
                int tel=rs.getInt("TEL");
                String email=rs.getString("EMAIL");

                System.out.println(emp_ID+", "+name+", "+address+", "+tel+", "+email);
            }
        }
    }
    catch (SQLException ex) {
        Logger.getLogger(Add_Employee.class.getName()).log(Level.SEVERE, null, ex);
    }
}

它与 Oracle 数据库连接良好，并从代码中指定的 table 中获取所有 3 行，但顺序相反。我已经尝试强制 FETCH_FORWARD 但没有成功。所以它获取了如下记录：编号 3.,2.,1。而不是 ID 1.、2.、3.

Answer 1

添加

ORDER BY id ASC

至sql_qrp。

Java 结果集以相反的顺序显示

Java resultset displayed in reverse order

java

fetch

reverse

resultset