ElasticSearch bulk批量插入数据

环境：使用RestHighLevelClient进行bulk操作

代码如下：

/**
     * es 批量存数据的方法
     * 1.创建es clent
     * 2.创建bulk请求体
     * 3.向bulk请求体中添加多个数据
     * 4.发起rest请求
     * 5.关闭client
     * @throws IOException
     */
public void bulk2() throws IOException {

        int a = 1;
        //创建连接
        RestHighLevelClient restClient = new RestHighLevelClient(
                RestClient.builder(
                        new HttpHost("localhost",9200,"http")
                )
        );


        BulkRequest request = new BulkRequest();

        // source中可以存入Map(String,Object)
        request.add(new IndexRequest("index_text","doc","1")
                .source(XContentType.JSON,"name","amy","age",10))
                .add(new IndexRequest("index_text","doc","2")
                .source(XContentType.JSON,"name","bob","age",11));

        restClient.bulk(request);

        restClient.close();

    }

代码中传入source()中的参数还可以为一下形式

        // 通过Map(String,Object) 构建source中的参数
        BulkRequest request2 = new BulkRequest();

        Map<String,Object> jsonMap = new HashMap<>();
        jsonMap.put("name","小明");
        jsonMap.put("age",11);

        request2.add(new IndexRequest("index_text","doc","1")
                .source(jsonMap));
        restClient.bulk(request2);

        // 通过XContentBuilder 构建source中的参数
        XContentBuilder builder = new XContentFactory().jsonBuilder();
        builder.startObject();
        {
            builder.field("name","小红");
            builder.timeField("date",new Date());
        }
        builder.endObject();

        BulkRequest request3 = new BulkRequest();
        request3.add(new IndexRequest("index_text","doc","5")
                .source(builder));

出现问题：java.lang.NoClassDefFoundError: org/elasticsearch...报错

原因：依赖不对 org.elasticsearch elasticsearch 依赖因与本地es版本相同（我使用的为6.3.1）

所需依赖如下(4个)：

   <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>6.3.2</version>
        </dependency>

        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>6.3.1</version>
        </dependency>

        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.11.1</version>
        </dependency>

        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.11.1</version>
        </dependency>