我想撰寫一個 doIf 塊來檢查“studentPersonalRefId”或“teacherAssignmentRefId”是否為空。如果是這樣，則輸出一條訊息，指出某事為空。否則，繼續“getCanvasAssignments”請求：
.doIfEqualsOrElse((session -> String.valueOf(session.getString("studentPersonalRefId")),"null") || ( session -> String.valueOf(session.getString("teacherAssignmentRefId")),"null").then(
exec(session -> {
log.info("studentPersonalRefId or teacherAssingnmentRefId is null");
log.info("studentPersonalRefId = " session.getString("studentPersonalRefId") " teacherAssignmentRefId = " session.getString("teacherAssignmentRefId"));
return session;
})
}).orElse(
//Fetch the assignment which takes refId as a param, if the refId exists
exec(getCanvasAssignments);
)
類似的事情可能嗎？
uj5u.com熱心網友回復：
.doIfOrElse(session ->
!session.contains("studentPersonalRefId") ||
!session.contains("teacherAssignmentRefId")
).then(
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