ES 關於索引的API操縱

上代碼,結合上篇的SpringBoot集成ES以後,來完成一些索引的操做

建立測試類,而後運行,經過Head插件觀察索引的狀況變動

package com.dance.danceesapi.test;

import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.support.master.AcknowledgedResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.CreateIndexRequest;
import org.elasticsearch.client.indices.CreateIndexResponse;
import org.elasticsearch.client.indices.GetIndexRequest;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.test.context.SpringBootTest;

import java.io.IOException;

/**
 * 關於索引的API的操做
 */
@SpringBootTest
public class TestIndex {

    @Autowired
    @Qualifier("restHighLevelClient")
    RestHighLevelClient restHighLevelClient;

    /**
     * 測試索引的建立
     * @throws IOException
     */
    @Test
    void createIndex() throws IOException {

        // 建立索引請求,並指定索引名稱
        CreateIndexRequest flower = new CreateIndexRequest("flower");

        // 執行請求
        CreateIndexResponse createIndexResponse = restHighLevelClient.indices().create(flower, RequestOptions.DEFAULT);

        System.out.println(createIndexResponse);
    }

    /**
     * 測試索引是否存在
     * @throws IOException
     */
    @Test
    void existIndex() throws IOException {

        // 獲取索引請求,並指定索引名稱
        GetIndexRequest flower = new GetIndexRequest("flower");

        // 執行請求
        boolean exists = restHighLevelClient.indices().exists(flower, RequestOptions.DEFAULT);

        System.out.println(exists);

    }

    /**
     * 測試索引的刪除
     * @throws IOException
     */
    @Test
    void deleteIndex() throws IOException {

        // 刪除索引請求,並指定索引名稱
        DeleteIndexRequest flower = new DeleteIndexRequest("flower");

        // 執行請求
        AcknowledgedResponse delete = restHighLevelClient.indices().delete(flower, RequestOptions.DEFAULT);

        System.out.println(delete.isAcknowledged());

    }
}

做者：彼岸舞

時間：2020\09\11

內容關於：ElasticSearch

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