Mongo整合SpringTemplate用法
使用Spring的MongoTemplate如何执行自定义的mongo语句
对GoodsInfo Collection按照name进行distinct查询
String jsonSql = "{distinct:'GoodsInfo', key:'name'}"CommandResult commandResult = mongoTemplate.executeCommand(jsonSql)System.out.println()BasicDBList list = (BasicDBList)commandResult.get("values")for (int i = 0 System.out.println(list.get(i))} System.out.println()
查询统计某一个时间段每个片区下的总用户数，新用户数，旧用户数，异常数
public Map<String, LandPushTypeCount> findTodayCountByAreaIds(Collection<String> areaIds) throws Exception { Map<String, LandPushTypeCount> result = new HashMap<String, LandPushTypeCount>() Criteria criteria = Criteria.where("todayDate").is(DateUtil.parseDate2YMD(new Date())).andOperator(Criteria.where("areaId").in(areaIds)) String initDocument = "{codeCount:0, newCount:0, oldCount:0, errorCount:0}" String reduceFunction = "function (doc, prev) { prev.codeCount += doc.codeCount; prev.newCount += doc.newCount; prev.oldCount += doc.oldCount; prev.errorCount += doc.errorCount; }" GroupBy groupBy = GroupBy.key("areaId").initialDocument(initDocument).reduceFunction(reduceFunction) GroupByResults<LandPushTypeCount> groupByResult = landPushTypeCountDao.getMongoTemplate().group(criteria, "LandPushTypeCount", groupBy, LandPushTypeCount.class) BasicDBList list = (BasicDBList) groupByResult.getRawResults().get("retval") for (int i = 0 LandPushTypeCount landPushTypeCountBean = new LandPushTypeCount() BasicDBObject obj = (BasicDBObject)list.get(i) System.out.println("片区：" + obj.get("areaId") + "总数量：" + obj.get("codeCount") + "新用户数量：" + obj.get("newCount") + "旧用户数量：" + obj.get("oldCount") + "异常数量：" + obj.get("errorCount") ) landPushTypeCountBean.setCodeCount(((Double) obj.get("codeCount")).intValue()) landPushTypeCountBean.setNewCount(((Double) obj.get("newCount")).intValue()) landPushTypeCountBean.setOldCount(((Double) obj.get("oldCount")).intValue()) landPushTypeCountBean.setErrorCount(((Double) obj.get("errorCount")).intValue()) result.put((String) obj.get("areaId"), landPushTypeCountBean) } return result }// 相当于mongo语句如下db.runCommand({ "group": { "ns":"LandPushTypeCount", "key":{"areaId":true}, "initial":{codeCount:0, newCount:0, oldCount:0, errorCount:0}, "$reduce":function(doc,prev) { prev.codeCount += doc.codeCount prev.newCount += doc.newCount prev.oldCount += doc.oldCount prev.errorCount += doc.errorCount }, "condition":{"todayDate":"2015-10-29", "areaId":{$in:["", "330100", "110000"]}} }})
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查询top100回复数的帖子
public void top100Postinfo() { long start = System.nanoTime(); try { final long startTime = 1443628800000L; final long endTime = 1446436799000L; Query query = new Query(); query.addCriteria(Criteria.where("createTS").gte(startTime).lte(endTime)); query.addCriteria(Criteria.where("srcPostId").exists(true)); query.addCriteria(Criteria.where("referInfo").exists(false)); query.addCriteria(Criteria.where("dr").is(0)); long count = postinfoDAO.getCount(query); System.out.println("count:" + count); final int filterCount = 100; DBObject result1 = postinfoDAO.getMongoTemplate().execute(Postinfo.class, new CollectionCallback<DBObject>() { @Override public DBObject doInCollection(DBCollection collection) throws MongoException, DataAccessException { Map matchMap = new HashMap(); matchMap.put("createTS", new BasicDBObject("$gt", startTime).append("$lt", endTime)); matchMap.put("referInfo", new BasicDBObject("$exists", false)); matchMap.put("srcPostId", new BasicDBObject("$exists", true)); matchMap.put("dr", 0); DBObject matchOption = new BasicDBObject("$match", matchMap); Map groupMap = new HashMap(); groupMap.put("_id", "$srcPostId"); groupMap.put("total", new BasicDBObject("$sum", 1)); BasicDBObject groupOption = new BasicDBObject("$group", groupMap); Map sortMap = new HashMap(); sortMap.put("total", -1); BasicDBObject sortOption = new BasicDBObject("$sort", sortMap); BasicDBObject limitOption = new BasicDBObject("$limit", filterCount); AggregationOutput output = collection.aggregate(matchOption, groupOption, sortOption, limitOption); Iterator<DBObject> iterator = output.results().iterator(); DBObject result = null; List<Map<String, String>> resultList = new ArrayList<Map<String, String>>(); while (iterator.hasNext()) { result = iterator.next(); String id = (String) result.get("_id"); Integer total = (Integer) result.get("total"); System.out.println("id:" + id); System.out.println("total:" + total); Map<String, String> resultMap = new HashMap<>(); resultMap.put("id", id); resultMap.put("total", String.valueOf(total)); resultList.add(resultMap); } exportExcel(resultList); return result; } }); } catch (Exception e) { e.printStackTrace(); } long finish = System.nanoTime(); System.out.println(TimeUnit.NANOSECONDS.toSeconds(finish - start) + ":秒"); System.out.println("top20PercentPostinfo 执行完毕"); }db.Postinfo.aggregate([ { $match: { "createTS":{"$gt":1443628800000, "$lt":1446436799000}, "srcPostId":{$exists:true}, "referInfo":{$exists:false}, "dr":0 } }, { $limit: 1 }, { $group: { _id: "$srcPostId", total: { $sum: 1 } } }, { $sort: { total: -1 } }]);
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参考文章：
- http://blog.csdn.net/ruishenh/article/details/12842331
- http://www.360doc.com/content/13/0524/18/12127276_287814300.shtml
- http://ask.csdn.net/questions/167950
- http://147175882.iteye.com/blog/1565378
