java mongo 查询统计 distinct详解编程语言

Date lastExcTime=new Date();

CommandResult result = mongoTemplate.getDb().command(

new BasicDBObject( distinct , homeLog ).append( key ,

userId ).append(

query ,

new BasicDBObject( createTime , new BasicDBObject(

$gte , lastExcTime))));

JSONArray bean=JSONArray.parseArray(result.getString( values ));

 System.out.println(bean.size());

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