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You can remove a policy from a policy-protected document
in order to remove security from the document. That is, if you no
longer want the document to be protected by a policy. If you want
to update a policy-protected document with a newer policy, then
instead of removing the policy and adding the updated policy, it
is more efficient to switch the policy.
Summary of stepsTo remove a policy from
a policy-protected PDF document, perform the following steps:
Include project files
Create a Rights Management Client API object.
Retrieve a policy-protected PDF document.
Remove the policy from the PDF document.
Save the unsecured PDF document.
Include project filesInclude necessary files into your development
project. If you are creating a client application using Java, then
include the necessary JAR files. If you are using web services,
then make sure that you include the proxy files.
Create a Rights Management Client API objectBefore you can programmatically
perform a Rights Management service operation, create a Rights Management
service client object.
Retrieve a policy-protected PDF documentYou can retrieve a policy-protected
PDF document in order to remove a policy. If you attempt to remove
a policy from a PDF document that is not protected by a policy,
you will cause an exception.
Remove the policy from the PDF documentYou can remove a policy
from a policy-protected PDF document provided that an administrator
is specified in the connection settings. If not, then the policy
used to secure a document must contain the SWITCH_POLICY permission
in order to remove a policy from a PDF document. Also, the user
specified in the LiveCycle connection settings must also
have that permission. Otherwise, an exception is thrown.
Save the unsecured PDF documentAfter the Rights Management
service removes a policy from a PDF document, you can save the unsecured
PDF document as a PDF file.
Remove a policy from a PDF document using the Java APIRemove a policy from a policy-protected PDF document by
using the Rights Management API (Java):
Include project files.
Include client JAR files,
such as adobe-rightsmanagement-client.jar, in your Java project’s
class path.
Create a Rights Management Client API object.
Retrieve a policy-protected PDF document.
Create a java.io.FileInputStream object
that represents the policy-protected PDF document by using its constructor
and passing a string value that specifies the location of the PDF
document.
Create a com.adobe.idp.Document object by
using its constructor and passing the java.io.FileInputStream object.
Remove the policy from the PDF document.
Create
a DocumentManager object by invoking the RightsManagementClient object’s getDocumentManager method.
Remove a policy from the PDF document by invoking the DocumentManager object’s removeSecurity method
and passing the com.adobe.idp.Document object that
contains the policy-protected PDF document. This method returns
a com.adobe.idp.Document object that contains an
unsecured PDF document.
Save the unsecured PDF document.
Create a java.io.File object
and ensure that the file extension is PDF.
Invoke the Document object’s copyToFile method
to copy the contents of the Document object to
the file (ensure that you use the Document object
that was returned by the removeSecurity method).
Remove a policy using the web service APIRemove a policy from a policy-protected PDF document using
the Rights Management 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/RightsManagementService?WSDL&lc_version=9.0.1.
注意： Replace localhost with the IP
address of the server hosting LiveCycle.
Create a Rights Management Client API object.
Create a RightsManagementServiceClient object
by using its default constructor.
Create a RightsManagementServiceClient.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/RightsManagementService?WSDL.)
You do not need to use the lc_version attribute. This
attribute is used when you create a service reference.)
Create a System.ServiceModel.BasicHttpBinding object
by getting the value of the RightsManagementServiceClient.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 RightsManagementServiceClient.ClientCredentials.UserName.UserName.
Assign the corresponding password value to the field RightsManagementServiceClient.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.
Retrieve a policy-protected PDF document.
Create a BLOB object by using its constructor.
The BLOB object is used to store the policy-protected
PDF document from which the policy is removed.
Create a System.IO.FileStream object by
invoking its constructor and passing a string value that represents
the file location of the PDF document 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 contents of the byte array.
Remove the policy from the PDF document.
Remove the
policy from the PDF document by invoking the RightsManagementServiceClient object’s removePolicySecurity method
and passing the BLOB object that contains the policy-protected
PDF document. This method returns a BLOB object
that contains an unsecured PDF document.
Save the unsecured PDF document.
Create a System.IO.FileStream object
by invoking its constructor and passing a string value that represents
the file location of the unsecured PDF document.
Create a byte array that stores the data content of the BLOB object
that was returned by the removePolicySecurity method.
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.
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