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You can use the XMP Utilities Java
and web service APIs to programmatically retrieve and save XMP metadata
from a PDF document.
Summary of stepsTo export XMP metadata from a PDF document, perform the
following steps:
Include project files.
Create an XMPUtilityService client.
Invoke the XMP metadata export operation.
Include project filesInclude necessary files into your development
project. If you are creating a client application using Java, include
the necessary JAR files. If you are using web services, ensure that
you include the proxy files.
Create an XMPUtilityService clientBefore you can programmatically
perform an XMP Utilities operation, you must create an XMPUtilityService
client. With the Java AP,I this is accomplished by creating an XMPUtilityServiceClient object.
With the web service API, this is accomplished using an XMPUtilityServiceService object.
Invoke the XMP metadata export operationAfter you create the
service client, you can invoke one of the XMP metadata export operations,
which can be used to inspect the XMP metadata or save it to disk.
Export XMP metadata using the Java APIExport XMP metadata by using the XMP Utilities API (Java):
Include project files
Include client JAR files,
such as adobe-pdfutility-client.jar, in your Java project’s class
path.
注意： The adobe-pdfutility-client.jar file
contains classes that enable you to programmatically invoke the
XMP Utility service.
Create an XMPUtilityService client
Create an XMPUtilityServiceClient object
by using its constructor and passing a ServiceClientFactory object
that contains connection properties.
Invoke the XMP metadata import operation
To inspect
the XMP metadata, invoke the XMPUtilityServiceClient object’s exportMetadata method
and pass in a com.adobe.idp.Document object that
represents the PDF file. The method returns an XMPUtilityMetadata object
that contains the retrieved metadata.
To retrieve and save
the XMP metadata, invoke the XMPUtilityServiceClient object’s exportXMP method
and pass in a com.adobe.idp.Document object that
represents the PDF file. The method returns a com.adobe.idp.Document object
that contains the retrieved metadata, which you can subsequently
save to disk as an XML file.
Export XMP metadata using the web service APIExport XMP metadata by using the XMP Utilities API (web
service):
Include project files
Create an XMPUtilityService client
Create an XMPUtilityServiceService object
by using your proxy class constructor.
Invoke the XMP metadata import operation
To inspect
the XMP metadata, invoke the XMPUtilityServiceClient object’s exportMetadata method
and pass in a BLOB object that represents the PDF
file. The method returns an XMPUtilityMetadata object that
contains the retrieved metadata.
To retrieve and save the
XMP metadata, invoke the XMPUtilityServiceClient object’s exportXMP method
and pass in a BLOB object that represents the PDF
file. The method returns a BLOB object that contains
the retrieved metadata, which you can subsequently save to disk as
an XML file.
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