MongoDB查询

try { 

 System.out.println("=========********测试**********");
//先获取mongo库的集合DBCollection对象
DBCollection data = (DBCollection) mongoClientService.getColectionByName("mongo库集合名称");

BasicDBObject query3 = new BasicDBObject();
query3.put("name","Tom");//查找姓名为Tom


//查询两个时间范围的，用map包装一下
Map<String, Object> queryMap = new HashMap<>();
queryMap.put("$gt", "1496911821071");
queryMap.put("$lt", "1496915447871");
  query3.put("timeStamp", new BasicDBObject(queryMap));
  //模糊匹配rule查询
  query3.put("businessRuleName", new BasicDBObject("$regex","rule"));
  DBCursor result3 = data.find(query3);

String resultCode = "4";
if ("4".equals(resultCode)) {
BasicDBList cond = new BasicDBList();
cond.add("0");
cond.add("1");
cond.add("2");
cond.add("3");
query3.put("resultCode", new BasicDBObject("$nin", cond));//查询resultCode不是0,1,2,3的
}
  System.out.println(result3.count());//count()方法得到查询到的记录数


  result3.skip(10).limit(20);//分页，skip():从第几条开始，limit():限制返回的条数


while (result3.hasNext()) {
DBObject dbObject = (DBObject) result3.next();
System.out.println(JSON.serialize(dbObject));
System.out.println("------------");
}
System.out.println(result3.count());//
System.out.println("=========********测试3结束**********===========*************");
} catch (Exception e) {
e.printStackTrace();
System.out.println("---------测试3异常了----------");
}