频繁使用以下连接Elasticsearch和关闭它的代码,重构

转载:

https://blog.youkuaiyun.com/u011863024/article/details/115721328#comments_20492057

public class SomeClass {
    public static void main(String[] args) throws IOException {
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(new HttpHost("localhost", 9200, "http")));
		
        ...doSomething
        
        client.close();
    }
}

重构后:

import org.elasticsearch.client.RestHighLevelClient;

public interface ElasticsearchTask {

    void doSomething(RestHighLevelClient client) throws Exception;

}

public class ConnectElasticsearch{

    public static void connect(ElasticsearchTask task){
        // 创建客户端对象
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(new HttpHost("localhost", 9200, "http")));
        try {
            task.doSomething(client);
            // 关闭客户端连接
            client.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

public class SomeClass {

    public static void main(String[] args) {
        ConnectElasticsearch.connect(client -> {
			//do something
        });
    }
}