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You can use the Output service to create
a PDF/A document. Because PDF/A is an archival format for long-term preservation
of the document’s content, all fonts are embedded and the file is uncompressed.
As a result, a PDF/A document is typically larger than a standard PDF
document. In addition, a PDF/A document does not contain audio and
video content. Like other Output service tasks, you provide both
a form design and data to merge with a form design to create a PDF/A
document.
The PDF/A-1 specification consists of two levels of conformance,
namely a and b. The major difference between the two is regarding
the logical structure (accessibility) support, which is not required
for conformance level b. Regardless of the conformance level, PDF/A-1
dictates that all fonts are embedded in the generated PDF/A document.
Although PDF/A is the
standard for archiving PDF documents, it is not mandatory that PDF/A
be used for archiving if a standard PDF document meets your company’s
needs. The purpose of the PDF/A standard is to establish a PDF file
that can be stored for a long period of time as well as meet document
preservation requirements. For example, a URL cannot be embedded
in a PDF/A because over time the URL may become invalid.
Your organization must assess its own needs, the length of time
you intend to keep the document, file size considerations, and determine
your own archiving strategy. You can programmatically determine
if a PDF document is PDF/A compliant by using the DocConverter service.
(See Programmatically Determining PDF/A Compliancy.)
A PDF/A document must use the font that is specified in the form
design and fonts cannot be substituted. As a result, if a font that
is located within a PDF document is not available on the host operating
system (OS), then an exception occurs.
When a PDF/A document is opened in Acrobat, a message is displayed
that confirms that the document is a PDF/A document, as shown in
the following illustration.
Summary of stepsTo create a PDF/A document, perform the
following steps:
Include project files.
Create an Output Client object.
Reference an XML data source.
Set PDF/A run-time options.
Set rendering run-time options.
Generate a PDF/A document.
Retrieve the results of the operation.
Include project filesInclude necessary files in your development
project. If you are creating a custom application by using Java,
include the necessary JAR files. If you are using web services,
make sure that you include the proxy files.
The following
JAR files must be added to your project’s class path:
adobe-livecycle-client.jar
adobe-usermanager-client.jar
adobe-output-client.jar
adobe-utilities.jar (Required if LiveCycle is deployed
on JBoss)
jbossall-client.jar (Required if LiveCycle is deployed
on JBoss)
if LiveCycle is deployed on a
supported J2EE application server that is not JBoss, you will need
to replace the adobe-utilities.jar and jbossall-client.jar files
with JAR files that are specific to the J2EE application server
on which LiveCycle is deployed.
Create an Output Client objectBefore you can programmatically
perform an Output service operation, you must create an Output service
client object. If you are using the Java API, create an OutputClient object.
If you are using the Output web service API, create an OutputServiceService object.
Reference an XML data sourceTo merge data with the form design,
you must reference an XML data source that contains data. An XML
element must exist for every form field that you want to populate
with data. The XML element name must match the field name. An XML
element is ignored if it does not correspond to a form field or
if the XML element name does not match the field name. It is not
necessary to match the order in which the XML elements are displayed
if all XML elements are specified.
Set PDF/A run-time optionsYou can set the File URI option
when creating a PDF/A document. The URI is relative to the J2EE
application server hosting LiveCycle. That is, if you set C:\Adobe,
the file is written to the folder on the server, not the client
computer. The URI specifies the name and location of the PDF/A file
that the Output service generates.
Set rendering run-time optionsYou can set rendering run-time
options when creating PDF/A documents. Two PDF/A related options
that you can set are the PDFAConformance and PDFARevisionNumber values.
The PDFAConformance value refers to how a PDF document adheres
to requirements that specify how long-term electronic documents
are preserved. Valid values for this option are A and B.
For information about level a and b conformance, see the PDF/A-1
ISO specification that is titled ISO 19005-1 Document management.
The PDFARevisionNumber value
refers to the revision number of a PDF/A document. For information
about the revision number of a PDF/A document, see the PDF/A-1 ISO
specification that is titled ISO 19005-1 Document management.
注意： You cannot set the tagged Adobe PDF option to false when
creating a PDF/A 1A document. PDF/A 1A will always be a tagged PDF
document. Also, you cannot set the tagged Adobe PDF option to true when
creating a PDF/A 1B document. PDF/A 1B will always be an untagged
PDF document.
Generate a PDF/A documentAfter you reference a valid XML data
source that contains form data and you set run-time options, you
can invoke the Output service, causing it to generate a PDF/A document.
Retrieve the results of the operationAfter the Output service
performs an operation, it returns various data items such as XML
data that specifies whether the operation was successful.
Create a PDF/A document using the Java APICreate a PDF/A document by using the Output API (Java):
Include project files.
Include client JAR files,
such as adobe-output-client.jar, in your Java project’s class path.
Create an Output Client object.
Reference an XML data source.
Create a java.io.FileInputStream object
that represents the XML data source that is used to populate the
PDF/A document by using its constructor and passing a string value
that specifies the location of the XML file.
Create a com.adobe.idp.Document object by
using its constructor and passing the java.io.FileInputStream object.
Set PDF/A run-time options.
Create a PDFOutputOptionsSpec object
by using its constructor.
Set the File URI option by invoking the PDFOutputOptionsSpec object’s setFileURI method.
Pass a string value that specifies the location of the PDF file
that the Output service generates. The File URI option is relative
to the J2EE application server hosting LiveCycle, not the
client computer.
Set rendering run-time options.
Create a RenderOptionsSpec object
by using its constructor.
Set the PDFAConformance value by invoking
the RenderOptionsSpec object’s setPDFAConformance method
and passing a PDFAConformance enum value that specifies
the conformance level. For example, to specify conformance level
A, pass PDFAConformance.A.
Set the PDFARevisionNumber value by invoking
the RenderOptionsSpec object’s setPDFARevisionNumber method
and passing PDFARevisionNumber.Revision_1.
注意： The PDF version of a PDF/A document is 1.4 regardless
of which value you specify for the RenderOptionsSpec object’s setPdfVersionmethod.
Generate a PDF/A document.
Create a PDF/A document
by invoking the OutputClient object’s generatePDFOutput method
and passing the following values:
A TransformationFormat enumeration
value. To generate a PDF/A document, specify TransformationFormat.PDFA.
A string value that specifies the name of the form design.
A string value that specifies the content root where the
form design is located.
A PDFOutputOptionsSpec object that contains
PDF run-time options.
A RenderOptionsSpec object that contains
rendering run-time options.
The com.adobe.idp.Document object that contain
the XML data source that contains data to merge with the form design.
The generatePDFOutput method
returns an OutputResult object that contains the
results of the operation.
注意： The OutputResult object’s getRecordLevelMetaDataList method
returns null.
Retrieve the results of the operation.
Create
a com.adobe.idp.Document object that represents
the status of the generatePDFOutput method by invoking
the OutputResult object’s getStatusDoc method.
Create a java.io.File object that will contain
the results of the operation. Ensure that the file name extension
is .xml.
Invoke the com.adobe.idp.Document object’s copyToFile method
to copy the contents of the com.adobe.idp.Document object
to the file (ensure that you use the com.adobe.idp.Document object
that was returned by the getStatusDoc method).
注意： Although the Output service writes the PDF/A document
to the location specified by the argument that is passed to the PDFOutputOptionsSpec object’s setFileURI method,
you can programmatically retrieve the PDF/A document by invoking
the OutputResult object’s getGeneratedDoc method.
Create a PDF/A document using the web service APICreate a PDF/A document by using the Output API (web service):
Include project files.
Create a Microsoft .NET
project that uses MTOM. Ensure that you use the following WSDL definition: http://localhost:8080/soap/services/OutputService?WSDL&lc_version=9.0.1.
注意： Replace localhost with the IP address of the server hosting LiveCycle.
Create an Output Client object.
Create an OutputServiceClient object
by using its default constructor.
Create an OutputServiceClient.Endpoint.Address object
by using the System.ServiceModel.EndpointAddress constructor.
Pass a string value that specifies the WSDL to the LiveCycle service (for example, http://localhost:8080/soap/services/OutputService?blob=mtom.)
You do not need to use the lc_version attribute.
This attribute is used when you create a service reference. However,
specify ?blob=mtom to use MTOM.
Create a System.ServiceModel.BasicHttpBinding object
by getting the value of the OutputServiceClient.Endpoint.Binding field.
Cast the return value to BasicHttpBinding.
Set the System.ServiceModel.BasicHttpBinding object’s MessageEncoding field
to WSMessageEncoding.Mtom. This value ensures that
MTOM is used.
Enable basic HTTP authentication by performing the following tasks:
Assign the LiveCycle user name to the field OutputServiceClient.ClientCredentials.UserName.UserName.
Assign the corresponding password value to the field OutputServiceClient.ClientCredentials.UserName.Password.
Assign the constant value HttpClientCredentialType.Basic to
the field BasicHttpBindingSecurity.Transport.ClientCredentialType.
Assign the constant value BasicHttpSecurityMode.TransportCredentialOnly to
the field BasicHttpBindingSecurity.Security.Mode.
Reference an XML data source.
Create a BLOB object
by using its constructor. The BLOB object is used
to store data that will be merged with the PDF/A document.
Create a System.IO.FileStream object by
invoking its constructor and passing a string value that represents the
file location of the PDF document to encrypt and the mode in which
to open the file.
Create a byte array that stores the content of the System.IO.FileStream object.
You can determine the size of the byte array by getting the System.IO.FileStream object’s Length property.
Populate the byte array with stream data by invoking the System.IO.FileStream object’s Read method
and passing the byte array, the starting position, and the stream
length to read.
Populate the BLOB object by assigning its MTOM field
with the byte array contents.
Set PDF/A run-time options.
Create a PDFOutputOptionsSpec object
by using its constructor.
Set the File URI option by assigning a string value that
specifies the location of the PDF file that the Output service generates
to the PDFOutputOptionsSpec object’s fileURI data
member. The File URI option is relative to the J2EE application
server hosting LiveCycle, not the client computer
Set rendering run-time options.
Create a RenderOptionsSpec object
by using its constructor.
Set the PDFAConformance value by assigning
a PDFAConformance enum value to the RenderOptionsSpec object’s PDFAConformance data
member. For example, to specify conformance level A, assign PDFAConformance.A to
this data member.
Set the PDFARevisionNumber value by assigning
a PDFARevisionNumber enum value to the RenderOptionsSpec object’s PDFARevisionNumber data
member. Assign PDFARevisionNumber.Revision_1 to
this data member.
注意： The PDF version
of a PDF/A document is 1.4 regardless of which value you specify.
Generate a PDF/A document.
Create a PDF document by
invoking the OutputServiceService object’s generatePDFOutput method
and passing the following values:
A TransformationFormat
enumeration value. To generate a PDF document, specify TransformationFormat.PDFA.
A string value that specifies the name of the form design.
A string value that specifies the content root where the
form design is located.
A PDFOutputOptionsSpec object that contains
PDF run-time options.
A RenderOptionsSpec object that contains
rendering run-time options.
The BLOB object that contains the XML data source
that contains data to merge with the form design.
A BLOB object that is populated by the generatePDFOutput method.
The generatePDFOutput method populates this object
with generated metadata that describes the document. (This parameter
value is required for web service invocation only.)
A BLOB object that is populated by the generatePDFOutput method.
The generatePDFOutput method populates this object
with result data. (This parameter value is required for web service invocation
only.)
An OutputResult object that contains the
results of the operation. (This parameter value is required for
web service invocation only.)
Retrieve the results of the operation.
Create
a System.IO.FileStream object by invoking its constructor
and passing a string value that represents an XML file location
that contains result data. Ensure that the file name extension is
.xml.
Create a byte array that stores the data content of the BLOB object
that was populated with result data by the OutputServiceService object’s generatePDFOutput method
(the eighth parameter). Populate the byte array by getting the value
of the BLOB object’s MTOM field.
Create a System.IO.BinaryWriter object by
invoking its constructor and passing the System.IO.FileStream object.
Write the contents of the byte array to the XML file by invoking
the System.IO.BinaryWriter object’s Write method
and passing the byte array.
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