public class MongoConfig {

    @Bean

    public MongoDbFactory mongoDbFactory() throws UnknownHostException {

        StringBuffer url=new StringBuffer();

            url.append("127.0.0.1");//数据库地址

            url.append(":");

            url.append("27017");//数据库端口

            url.append("/");

            url.append("dataBase");//数据库名字

        MongoClientURI mongoClientURI=new MongoClientURI(url.toString(),new MongoClientOptions.Builder());

        SimpleMongoDbFactory simpleMongoDbFactory=new SimpleMongoDbFactory(mongoClientURI);

        return  simpleMongoDbFactory;

    }

    @Bean

    public MongoTemplate mongoTemplate(MongoDbFactory mongoDbFactory) throws UnknownHostException{

        MongoTemplate mongoTemplate= new MongoTemplate(mongoDbFactory);

        return mongoTemplate;

    }

}