添加文檔時未保存元數據

Question

我能夠將元數據與文檔一起存儲在Watson的發現服務中，但現在它不再可用了！發生了什麼？

CreateDocumentRequest.Builder createDocumentBuilder = new CreateDocumentRequest.Builder(environmentId, collectionId); 
    JsonObject metadata = new JsonObject(); 
    metadata.addProperty("filename", fileName); 
    createDocumentBuilder.metadata(metadata); 
    createDocumentBuilder.inputStream(documentStream, applicationString); 
    CreateDocumentResponse createDocumentResponse = discovery.createDocument(createDocumentBuilder.build()).execute(); 

https://gateway.watsonplatform.net/discovery/api/v1/environments/[environmentId]/collections/[collectionId]/query?version=2016-11-07&query=&count=&offset=&aggregation=&filter=&return=元

{ 
"matching_results": 1, 
"results": [ 
    { 
     "id": "7c705482-9902-4976-9c77-25fbe92bf7fa", 
     "score": 1 
    } 
] 

}

爲什麼會停止工作？我對這個開始突然發生的底層框架感到有點失望。把它放在一起IBM！

Answer 1

我修復了您的錯誤IBM。

在com.ibm.watson.developer_cloud.discovery.v1.Discovery.createDocument（CreateDocumentRequest createRequest）中，您可以看到正在構建的Multipart請求，而從未添加所需的元數據部分（smh）。

我擴展的發現，並添加

multipartBuilder.addFormDataPart("metadata", createRequest.getMetadata().toString()); 

的請求......

public ServiceCall<CreateDocumentResponse> createDocument(CreateDocumentRequest createRequest) { 
    Validator.notEmpty(createRequest.getEnvironmentId(), "environment_id cannot be empty"); 
    Validator.notEmpty(createRequest.getCollectionId(), "collection_id cannot be empty"); 
    RequestBuilder builder = RequestBuilder.post(String.format("/v1/environments/%s/collections/%s/documents", new Object[] { createRequest.getEnvironmentId(), createRequest.getCollectionId() })); 


    if (createRequest.getConfigurationId() != null) { 
     builder.query(new Object[] { "configuration_id", createRequest.getConfigurationId() }); 
    } 
    Validator.notNull(createRequest.getFile(), "Document file cannot be null"); 
    MediaType mediaType = (MediaType)supportedMediaTypes.get(createRequest.getMediaType()); 
    Validator.notNull(mediaType, String.format("Media Type '%s' not supported", new Object[] { createRequest.getMediaType() })); 
    RequestBody file = InputStreamRequestBody.create(mediaType, createRequest.getFile()); 
    MultipartBody.Builder multipartBuilder = new MultipartBody.Builder(); 
    multipartBuilder.setType(MultipartBody.FORM); 
    multipartBuilder.addFormDataPart("file", "filename", file); 
    multipartBuilder.addFormDataPart("metadata", createRequest.getMetadata().toString()); 
    builder.body(multipartBuilder.build()); 
    Request request = createVersionedRequest(builder); 
    return createServiceCall(request, ResponseConverterUtils.getObject(CreateDocumentResponse.class)); 
}