//查询语句
        BasicDBObject idDB = new BasicDBObject().append("$match", new BasicDBObject().append("d", battID));
        BasicDBObject sortDB=new BasicDBObject().append("$sort", new BasicDBObject().append("t", -1));
        BasicDBObject limitDB=new BasicDBObject().append("$limit", 10);
        BasicDBObject groupDB = new BasicDBObject();
        groupDB.append("_id", "$d");
        groupDB.append("sum", new BasicDBObject().append("$sum", "$r"));
        groupDB.append("max", new BasicDBObject().append("$max", "%r"));
        groupDB.append("min", new BasicDBObject().append("$min", "%r"));

。。。。

DBObject resultData =MongoDBx.ecohis().main.getCollection("reshis").aggregate（？？）;