IBM Watson：将文档添加到集合时出现未知API错误

Question

我正尝试通过Java中的IBM Watson API将文档添加到IBM Bluemix Discovery实例的集合中。对于给定的文件，我做如下：

Discovery discovery = new Discovery("2017-08-01"); 
discovery.setEndPoint("https://gateway.watsonplatform.net/discovery/api"); 
discovery.setUsernameAndPassword("{username}", "{password}"); 
String environmentId = "{environment_id}"; 
String collectionId = "{collection_id}"; 

File f = new File("path/to/file"); 
String path = f.getPath(); 
String ext = FilenameUtils.getExtension(f.getName()); 

CreateDocumentRequest.Builder builder = new CreateDocumentRequest.Builder(environmentId, collectionId).documentId(path).file(f); 
CreateDocumentResponse createResponse = discovery.createDocument(builder.build()).execute(); 
System.out.println(createResponse.toString()); 

然而，当我执行我的计划，我得到的错误Exception in thread "main" com.ibm.watson.developer_cloud.service.exception.NotFoundException: Unknown API: POST [...]，它来自哪里createResponse初始化行。

谢谢。

Answer 1

你有错误的documentId。

正确的documentId与“49a82bd4-xxxx-xxxx-xxxx-900b7378ff35”类似，但是您将路径作为参数。

如果要添加文档，默认情况下不需要为documentId指定值。

Discovery discovery = new Discovery("2017-08-01"); 
discovery.setEndPoint("https://gateway.watsonplatform.net/discovery/api");        
discovery.setUsernameAndPassword("feeb4a95-xxxx-xxxx-xxxx-4d94c98b2b24", "KQc6G5nK6HrD"); 
String environmentId = "59d0fa32-xxxx-xxxx-xxxx-cf98a8cdc52e"; 
String collectionId = "49a82bd4-xxxx-xxxx-xxxx-900b7378ff35"; 
File f = new File("/Users/xxx/Desktop/myDoc.json"); 
Path path = Paths.get(f.getPath()); 
InputStream documentStream = new ByteArrayInputStream(Files.readAllBytes(path)); 

//Create 
CreateDocumentRequest.Builder builder = new CreateDocumentRequest.Builder(environmentId, collectionId); 
builder.inputStream(documentStream, HttpMediaType.APPLICATION_JSON); 
CreateDocumentResponse createResponse = discovery.createDocument(builder.build()).execute(); 
//Retrieve (You can get documentId here) 
QueryRequest.Builder queryBuilder = new QueryRequest.Builder(environmentId, collectionId); 
QueryResponse queryResponse = discovery.query(queryBuilder.build()).execute(); 
System.out.println(queryResponse.toString()); 
//Delete 
String documentId = "d1059598-xxxx-xxxx-xxxx-b65a1f3334d8"; 
DeleteDocumentRequest deleteRequest = new DeleteDocumentRequest.Builder(environmentId, collectionId, documentId).build(); 
DeleteDocumentResponse deleteResponse = discovery.deleteDocument(deleteRequest).execute();