接口 MetadataExtractorRegistry

方法详细资料

• metadataToExtract

  default void metadataToExtract​(MimeType mimeType,
                                 Class<?> targetType,
                                 @Nullable
                                 String name)

  Decode metadata entries with the given MimeType to the specified target class, and store the decoded value in the output map under the given name.

  参数:

  mimeType - the mime type of metadata entries to extract

  targetType - the target value type to decode to

  name - assign a name for the decoded value; if not provided, then the mime type is used as the key

• metadataToExtract

  default void metadataToExtract​(MimeType mimeType,
                                 ParameterizedTypeReference<?> targetType,
                                 @Nullable
                                 String name)

  Variant of metadataToExtract(MimeType, Class, String) that accepts ParameterizedTypeReference instead of Class for specifying a target type with generic parameters.

  参数:

  mimeType - the mime type of metadata entries to extract

  targetType - the target value type to decode to

• metadataToExtract

  <T> void metadataToExtract​(MimeType mimeType,
                             Class<T> targetType,
                             BiConsumer<T,​Map<String,​Object>> mapper)

  Variant of metadataToExtract(MimeType, Class, String) that allows custom logic to be used to map the decoded value to any number of values in the output map.

  类型参数:

  T - the target value type

  参数:

  mimeType - the mime type of metadata entries to extract

  targetType - the target value type to decode to

  mapper - custom logic to add the decoded value to the output map

• metadataToExtract

  <T> void metadataToExtract​(MimeType mimeType,
                             ParameterizedTypeReference<T> type,
                             BiConsumer<T,​Map<String,​Object>> mapper)

  Variant of metadataToExtract(MimeType, Class, BiConsumer) that accepts ParameterizedTypeReference instead of Class for specifying a target type with generic parameters.

  类型参数:

  T - the target value type

  参数:

  mimeType - the mime type of metadata entries to extract

  type - the target value type to decode to

  mapper - custom logic to add the decoded value to the output map