Spring Data MongoDB 查询指定字段详解大数据

DBObject dbObject = new BasicDBObject(); 
//dbObject.put("name", "zhangsan");  //查询条件 
 
BasicDBObject fieldsObject=new BasicDBObject(); 
//指定返回的字段 
fieldsObject.put("name", true);   
fieldsObject.put("age", true);   
fieldsObject.put("sex", true);   
 
Query query = new BasicQuery(dbObject,fieldsObject); 
List<Person> user = mongoTemplate.find(query, Person.class);