java在这种情况下如何使用Spring和Hibernate正确更新对象？

Question

当用户点击更新按钮时打开此模式：

<div class="modal fade" id="editModal" tabindex="-1" role="dialog" aria-hidden="true">
        <div class="modal-dialog modal-dialog-centered" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="edit-modal-title">Editar Credencial</h5>
                </div>
                <div class="modal-body">
                    <table id="edit-credentialsTable">
                        <tr class="row">
                            <th id="edit-modal-user">Usuario</th>
                            <th id="edit-modal-pass">Clave</th>
                            <th id="edit-modal-notes">Notas</th>
                        </tr>
                        <tr class="row">
                            <td><input type="text" id="newUser"/></td>
                            <td><input type="text" id="newPass"/></td>
                            <td><input type="text" id="newNotes"/></td>
                        </tr>
                    </table>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-dismiss="modal">Cerrar</button>
                </div>
            </div>
        </div>
    </div>

这是发布到控制器的JS代码：

$("#credentialsTable").on('click',"button[id^='edi-']",  (e) => {
    $('#credentialsModal').modal('hide');
    $('#editModal').modal('show');

    var credentialId = e.target.id;
    var newUser = $('#newUser').val();
    var newPass = $('#newPass').val();
    var newNotes = $('#newNotes').val();

    $.post( "/fisicHost/" + credentialId + "/credentials/update", data => {
    console.log(data);
    });
});

但我从这里迷路了。。。我不知道如何处理更新以在前端显示它

我应该如何发布新编辑字段的值？我不应该在URL中发送它们，因为我知道这是一种不好的做法，对吧

这是将处理post的控制器：

@RequestMapping(value = "/fisicHost/{id}/credentials/update", method = RequestMethod.POST)
public void updateCredential(@PathVariable(value = "id") String credId){
    String[] parts = credId.split("-");
    int id = Integer.parseInt(parts[1]);
    Credential credential = credentialService.getCredentialById(id);
    credentialService.update(credential);
}