Aggregation aggregation = newAggregation(
group("$meta_data.user_data.first_name", "$meta_data.user_data.last_name", "$meta_data.user_data.profile_pic", "$user_id")
);
AggregationResults<UsersMongoResult> groupResults = mongoTemplate.aggregate(aggregation, "chatuser_log", UsersMongoResult.class);
public class UsersMongoResult {
private String first_name;
private String last_name;
private String profile_pic;
private String user_id;
}
当我将结果映射到 pojo 类时,仅映射了 user_id。如何将其他字段映射到特定字段。我也无法在互联网上找到解决方案。