I am trying to follow this example: How to create a valid SAML 2.0 Assertion with OpenSAML library in Java and trying to create a SAML response. The code shown is for an older version of OpenSAML. I am using OpenSAML 4.1.1. Apparently XMLHelper is no longer in v.4. I have searched high and low and not found a solution, at least one that makes sense where I can convert the assertion into a string.
Below is the code I have right out of the sample:
SAMLInputContainer input = new SAMLInputContainer();
input.strIssuer = "http://synesty.com";
input.strNameID = "UserJohnSmith";
input.strNameQualifier = "My Website";
input.sessionId = "abcdedf1234567";
Map<String,String> customAttributes = new HashMap<String, String>();
customAttributes.put("FirstName", "John");
customAttributes.put("LastName", "Smith");
customAttributes.put("Email", "[email protected]");
customAttributes.put("PhoneNumber", "76373898998");
customAttributes.put("Locality", "USA");
customAttributes.put("Username", "John.Smith");
input.attributes = customAttributes;
Assertion assertion = GenSAMLAssertion.buildDefaultAssertion(input);
AssertionMarshaller marshaller = new AssertionMarshaller();
assert assertion != null;
Element plaintextElement = marshaller.marshall(assertion);
String originalAssertionString = XMLHelper.nodeToString(plaintextElement);
System.out.println("Assertion String: " + originalAssertionString);
The SerializeSupport class is now used to print XML in OpenSAML.
String originalAssertionString = SerializeSupport.prettyPrintXML(plaintextElement)
As for more current sample code for OpenSAML 4 I have a ongoing series on my blog. As well as accompanying source samples on my Github
A few years ago I also wrote a book on OpenSAML 3. It has not been updated but there are very few changes between 3 and 4.