To solve this issue, you need to first create an instance of the PreparedStatement class and assign it to the this.pstm variable. Once this is done, you can then invoke the getResultSet() method on the PreparedStatement instance.
公眾號：1024技術圈
?? 提供互聯網知識和資訊，分享IT前沿技術，熱門資源，大廠面試題 ??
