mongodb 模糊查询

DB直接查询语句：db.DiseaseType.find({code:/A01/})

java 端代码

                 Pattern pattern = Pattern.compile( "^.*"+likeCode+".*$", Pattern.CASE_INSENSITIVE);
BasicDBObject reg = new BasicDBObject();
reg.put("$regex", pattern);
BasicDBObject queryDBObject = new BasicDBObject();
queryDBObject.put("code", reg);
logger.info(queryDBObject);
List<DBObject> results = mongodbManagerImpl.query(DiseaseType.COLLECTION_NAME, queryDBObject);