测试elasticsearch保存时报找不到类型的错误

java测试存储数据到es时报错：...ActionRequestValidationException: Validation Failed: 1: type is missing...
   /**
     * 测试存储数据到 es
     */
    @Test
    public void indexData() throws IOException {
        IndexRequest indexRequest = new IndexRequest("users");
        indexRequest.id("1");   //数据的id
//        indexRequest.source("username","zhangsan","age",18,"gender","男")；
        User user = new User();
        String jsonString = JSON.toJSONString(user);
        indexRequest.source(jsonString, XContentType.JSON);  //要保存的内容

        //执行保存操作
        IndexResponse index = client.index(indexRequest, GulimallElasticSearchConfig.COMMON_OPTIONS);
        //提取有用的响应数据
        System.out.println(index);
    }

解决：
       尝试导入以下三个依赖：

<!-- 使用elasticsearch导入的三个包 -->
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>7.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-client</artifactId>
            <version>7.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>7.1.0</version>
        </dependency>

有的导入上面三个包了，但还是报错，可以将版本改成7.1.0，或者尝试其他版本试一下。