如何在java中获取更新的行ID

Question

    Query branch_update = null;
    Branches branchObject = null;
    try {
        branch_update = this.sessionFactory.getCurrentSession()
                .createQuery("Update Branches set branchname =:branchname,update_date =:update_date WHERE branchname =:branchname1");
        branch_update.setParameter("branchname", stringCellValue);
        branch_update.setParameter("update_date", new Date());
        branch_update.setParameter("branchname1", stringCellValue);
        int update_id = branch_update.executeUpdate();
} catch (Exception exception) {
        logger.error("Exception occured at \t e", exception.getMessage(), exception);
    }

同时使用分支名称更新行。如何获取更新的行 branch_id ？

提前谢谢...

Answer 1

您可以使用getGeneratedKeys() method 获取结果集

 s.execute();  // perform the UPDATE
    try (ResultSet rs = s.getGeneratedKeys()) {
        while (rs.next()) {
            System.out.println(rs.getInt(1));  // print the "branch_id" value of the updated row
        }
    }

编辑：- 在那种情况下，我认为这应该会有所帮助

Iterator iterator = branch_update.list().iterator();
            while (iterator.hasNext()) {
                Branches branch = (Branches) iterator.next();
            }