How to order the result from distinct list in MongoDB via Java Driver?

问题

I am using MongoDB via Java Driver (Spring Data MongoDB). Now my code is like:

DBObject query = new BasicDBObject("user", user);    
mongoTemplate.getCollection("reports").distinct("category", query);

Right now, the result list is not ordered. I want to it sorting by a ASC order. I have check this question Query MongoDB for ordered distinct values but I only get the answer which order the list by java side. How to order the result in MongoDB side?

回答1:

I don't think you can use the Distinct command with a "sort" parameter with standard queries.

However, you can use the aggregation framework to do these more complex queries.

来源：https://stackoverflow.com/questions/27476675/how-to-order-the-result-from-distinct-list-in-mongodb-via-java-driver