mongo java中and、or多条件查询

//and、or多条件联合查询

//age条件(and条件)

BasicDBList condList = new BasicDBList();

BasicDBObject cond = new BasicDBObject();

cond.put("$gt",0);

cond.put("$lte",40);

BasicDBObject composeCod = new BasicDBObject();

composeCod.put("age", cond);

condList.add(composeCod);

//name条件

BasicDBObject nameCond = new BasicDBObject();

nameCond.put("name", "name");

condList.add(nameCond);

//查询条件组合（or条件）

BasicDBObject searchCond = new BasicDBObject();

searchCond.put("$or", condList);

DBCursor findRefResult = coll.find(searchCond);

int i=1;

while (findRefResult.hasNext()) {

System.out.println("Inserted Document: "+i);

System.out.println(findRefResult.next());

i++;

}

//排序操作

DBCursor cursor = collection.find(filter_dbobject).limit(10).sort(new BasicDBObject("create_time",-1));