springboot+elasticsearch7.3.0创建索引

首先参考: https://blog.csdn.net/qq_27950699/article/details/99354774搭建Client

   首先排除内置包(有可能不需要,可自行测试):

    org.elasticsearch.client
    elasticsearch-rest-high-level-client
    7.3.0
    
        
            org.elasticsearch
            elasticsearch
        
        
            org.elasticsearch.client
            elasticsearch-rest-client
        
    


    org.elasticsearch.client
    elasticsearch-rest-client
    7.3.0


    org.elasticsearch
    elasticsearch
    7.3.0

---

开始集成es:index:索引名称

EsConfig esConfig = new EsConfig();
RestHighLevelClient client = esConfig.client();
CreateIndexRequest request = new CreateIndexRequest(index);
request.settings(Settings.builder()
        .put("index.number_of_shards",10)   //分片数
        .put("index.number_of_replicas", 1));//副本数
request.alias(new Alias(index+"alias"));//设置别名
request.setTimeout(TimeValue.timeValueMinutes(2));//设置创建索引超时2分钟
// 同步请求(亲测可以)
try {
    CreateIndexResponse createIndexResponse = client.indices().create(request,RequestOptions.DEFAULT);
    // 处理响应
    boolean acknowledged = createIndexResponse.isAcknowledged();
    boolean shardsAcknowledged = createIndexResponse.isShardsAcknowledged();
    System.out.println(acknowledged+","+shardsAcknowledged);
   client.close();
} catch (IOException e) {
    logger.error("索引{}创建异常:"+e.getMessage(),index);
    return false;
}
//异步请求 (自己测试)
/** ActionListener listener = new ActionListener() {
                @Override
                public void onResponse(CreateIndexResponse createIndexResponse) {
                    boolean acknowledged = createIndexResponse.isAcknowledged();
                    boolean shardsAcknowledged = createIndexResponse.isShardsAcknowledged();
                }
                @Override
                public void onFailure(Exception e) {
                    e.printStackTrace();
                }
            };
  client.indices().createAsync(request, listener);*/

return true;
不管用什么方法,都不要忘记client.close();