MongoDb学习 自定义配置mongodb连接

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;
    }

}