我相信你正在寻找的是
$setOnInsert对
subdocument1。所以类似的东西应该为您工作。
Query query = Query.query(Criteria.where("_id").is("some_id"));Update update = Update.update("_id", "some_id") .set("field1", "value1") .set("field2", "value2") .set("subdocument2", subdocumentObject2) .setonInsert("subdocument1", subdocumentObject1);此处更多https://docs.mongodb.com/manual/reference/operator/update/setOnInsert/
