命令及java代码两种方式：mongo中查询某字段是否包含指定字符串

1 查询genres字段值（举例："Action|Animation|Drama|Fantasy|Sci-Fi"）中，包含Children的记录

shell命令，下面两种形式均可：

1）db.Movie.find({"genres":/Comedy/})

2）db.Movie.find({"genres":{$regex:"Children"}})

java代码：

MongoCursor cursor = collection.find(new BasicDBObject("genres", new BasicDBObject("$regex", "Children"))).iterator()

2查询genres字段值（举例："Action|Animation|Drama|Fantasy|Comedy"）中，包含Children并且包含Comedy的记录

shell命令，下面两种形式均可：

1）db.Movie.find({$and:[{"genres":/Children/},{"genres":/Comedy/}]})

2）db.Movie.find({$and:[{"genres":{$regex:"Children"}},{"genres":{$regex:"Comedy"}}]})

java代码：

BasicDBList condList = new BasicDBList();

condList.add(new BasicDBObject("genres", new BasicDBObject("$regex", "Children")));

condList.add(new BasicDBObject("genres", new BasicDBObject("$regex", "Comedy")));

MongoCursor cursor = collection.find(new BasicDBObject("$and", condList)).iterator();