ElasticSearch，摄取附件错误-验证失败：1：缺少来源； 2：缺少内容类型

Question

我正在尝试通过Java代码从本地路径索引我的pdf文件。在建立索引期间出现以下错误。

Exception in thread "main" org.elasticsearch.action.ActionRequestValidationException: Validation Failed: 1: source is missing;2: content type is missing;
    at org.elasticsearch.action.ValidateActions.addValidationError(ValidateActions.java:26)
    at org.elasticsearch.action.index.IndexRequest.validate(IndexRequest.java:153)
    at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:436)
    at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:429)
    at org.elasticsearch.client.RestHighLevelClient.index(RestHighLevelClient.java:312)
    at com.es.utility.DocumentIndex.main(DocumentIndex.java:82)

请在下面找到我的Java代码。

public static void main(String args[]) throws IOException {
    String filePath = "D:\\\\1SearchEngine\\testing.pdf";
    String encodedfile = null;
    RestHighLevelClient restHighLevelClient = null;
    File file = new File(filePath);
    try {
        FileInputStream fileInputStreamReader = new FileInputStream(file);
        byte[] bytes = new byte[(int) file.length()];
        fileInputStreamReader.read(bytes);
        encodedfile = new String(Base64.getEncoder().encodeToString(bytes));
        //System.out.println(encodedfile);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    try {
        if (restHighLevelClient != null) {
            restHighLevelClient.close();
        }
    } catch (final Exception e) {
        System.out.println("Error closing ElasticSearch client: ");
    }

    try {
        restHighLevelClient = new RestHighLevelClient(RestClient.builder(new HttpHost("localhost", 9200, "http"),
                new HttpHost("localhost", 9201, "http")));
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }

    IndexRequest request = new IndexRequest( "attach_local", "doc", "103");   
    Map<String, Object> jsonMap = new HashMap<>();
    jsonMap.put("resume", "Karthikeyan");
    jsonMap.put("postDate", new Date());
    jsonMap.put("resume", encodedfile);
    try {
        IndexResponse response = restHighLevelClient.index(request);
    } catch(ElasticsearchException e) {
        if (e.status() == RestStatus.CONFLICT) {

        }
    }
}

请找到我的附件映射文件

PUT attach_local
{
  "mappings" : {
    "doc" : {
      "properties" : {
        "attachment" : {
          "properties" : {
            "content" : {
              "type" : "binary"
            },
            "content_length" : {
              "type" : "long"
            },
            "content_type" : {
              "type" : "text"
            },
            "language" : {
              "type" : "text"
            }
          }
        },
        "resume" : {
          "type" : "text"
        }
      }
    }
  }
}

我使用的是ElasticSearch 6.2.3版本，并且我已经安装了摄取附件插件版本6.3.0

请在我的索引中找到可用的文档，该文档已通过kibana中的curl脚本索引到ElasticSearch中

  "took": 41,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 2,
    "max_score": 1,
    "hits": [
      {
        "_index": "attach_local",
        "_type": "doc",
        "_id": "101",
        "_score": 1,
        "_source": {
          "resume": "e1xydGYxXGFuc2kNCkxvcmVtIGlwc3VtIGRvbG9yIHNpdCBhbWV0DQpccGFyIH0=",
          "attachment": {
            "content_type": "application/rtf",
            "language": "ro",
            "content": "Lorem ipsum dolor sit amet",
            "content_length": 28
          }
        }
      }