小编use*_*043的帖子

可能重复:
获取java.sql.SQLException:ResultSet关闭后不允许操作

我正在研究一些抛出Operation not allowed after ResultSet closed异常的代码.这里是:

ResultSet res = stmt.executeQuery("SELECT codigo FROM projecto WHERE nome='"
    + auxiliarNomes.elementAt(i).toString() + "'");
while (res.next()) {
    codigo = res.getString("codigo");
    stmt.executeUpdate("insert into categoriaprojectos values("
        + "'" + codigo + "'" + "," + "'" + Antena.RetornaCodigoProjecto() + "')");
}

我究竟做错了什么？