XmpMetadata

Vue de l’ensemble

‘XmpMetadata’ est une classe dans Aspose.PDF FOSS pour Java. Il se trouve à partir de: ‘Iterable<Map.Entry<String’, ‘xmpValue»’.

Il fournit l’accès aux métadonnées XMP d’un document PDF (ISO 32000-1 §14.3.2, ISO 16684-1).

Cette classe fournit 19 méthodes pour travailler avec des objets XmpMetadata dans les programmes Java. Les méthodologies disponibles comprennent: ‘Xmpmetdata’, ‘add’ , ‘contains’, get', ‘getBytes', ’getKeys’, 'getNamespaceUriByPrefix', ''getPrefixBYNAMespace Uri', ‚getProperties, ‘gettRegistry,isDirty et 3 méthode supplémentaires. Tous les membres publics sont accessibles à toute application Java après l'installation de l’Aspose.PDF FOSS pour le package Java . Propriétés : 'bytes ; ‘dirty ́, keys; ‘propriété`.

Propriétés

Name	Type	Access	Description
`keys`	`java.util.Collection<String>`	Read	Returns all property keys.
`bytes`	`byte[]`	Read	Returns the full XMP XML as UTF-8 bytes.
`dirty`	`boolean`	Read	Returns true if properties have been modified since parsing.
`registry`	`XmpNamespaceRegistry`	Read	Returns the internal namespace registry.
`properties`	`Map<String, XmpProperty>`	Read	Returns the internal properties map (for serialization by Document).

méthodes

Signature	Description
`XmpMetadata()`	Creates empty XMP metadata.
`XmpMetadata(xmpBytes: byte[])`	Creates XMP metadata from raw XML bytes.
`get(key: String)` → `XmpValue`	Returns the value for the given key, or null if not present.
`contains(key: String)` → `boolean`	Returns true if the given key is present.
`getKeys()` → `java.util.Collection<String>`	Returns all property keys.
`set(key: String, value: XmpValue)`	Sets a property value.
`set(key: String, value: String)`	Sets a property value from a string.
`add(key: String, value: XmpValue)`	Adds a property value.
`add(key: String, value: String)`	Adds a property value from a string.
`remove(key: String)`	Removes a property.
`registerNamespaceUri(prefix: String, namespaceUri: String)`	Registers a custom namespace prefix-URI mapping.
`registerNamespaceUri(prefix: String, namespaceUri: String, schemaDescription: String)`	Registers a custom namespace with description.
`getNamespaceUriByPrefix(prefix: String)` → `String`	Returns the namespace URI for a prefix.
`getPrefixByNamespaceUri(namespaceUri: String)` → `String`	Returns the prefix for a namespace URI.
`getBytes()` → `byte[]`	Returns the full XMP XML as UTF-8 bytes.
`iterator()` → `Iterator<Map.Entry<String, XmpValue>>`	Returns an iterator over all key-value pairs.
`isDirty()` → `boolean`	Returns true if properties have been modified since parsing.
`getRegistry()` → `XmpNamespaceRegistry`	Returns the internal namespace registry.
`getProperties()` → `Map<String, XmpProperty>`	Returns the internal properties map (for serialization by Document).

Voir aussi

Aspose.PDF pour Java — API d’entreprise