spring-data-elasticsearch 使用java api进行动态创建索引

private void createIndex(String indexName) {
    IndexCoordinates indexCoordinates = IndexCoordinates.of(indexName);
    IndexOperations indexOperations = elasticsearchRestTemplate.indexOps(indexCoordinates);
    //设置主分片数、副本数、refresh刷新时间间隔
    Map<String, String> setting = new MapBuilder<String, String>()
            .put("index.number_of_shards", "3")
            .put("index.number_of_replicas", "3")
            .put("index.refresh_interval", "1s").map();
    //创建索引，并设置settings参数
    indexOperations.create(Document.from(setting));
    //创建索引mapping方案1：指定以Message类为mapping模板
    indexOperations.putMapping(indexOperations.createMapping(Message.class));
    /* //创建索引mapping方案2：json字符串形式
    String mappingJson = "{\n" +
            "  \"properties\": {\n" +
            "    \"field1\": { \"type\": \"text\" },\n" +
            "    \"field2\": { \"type\": \"keyword\" }\n" +
            "  }\n" +
            "}";
    indexOperations.putMapping(Document.parse(mappingJson));*/
}