OpenSAML user discussion

[Chandra Tondepu <>]

The webapplication running on tomcat 6 is not able to load and create object for SignatureBuilder.  I have loaded all the .xml files through Configuration into the Parser, but for some reason it is not picking up SingatureBuilder though it is picking up SubjectBuilder, IssuerBuilder, EnvelopeBuilder etc.,??  Why SignatureBuilder so special??

SignatureBuilder signaturebuilder = ((SignatureBuilder)builderFactory.getBuilder(Signature.DEFAULT_ELEMENT_NAME));

System.out.println("Classname:" + builderFactory.getClass().getName());

System.out.println("SignatureBuilder"+signaturebuilder);

signature123 = (Signature) ((XMLObjectBuilder)builderFactory.getBuilder(Signature.DEFAULT_ELEMENT_NAME)).buildObject(Signature.DEFAULT_ELEMENT_NAME);

java.lang.NullPointerException

at com.cst.saml2.attrqry.SignAttributeQuery.<init>(SignAttributeQuery.java:122)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at java.lang.Class.newInstance0(Unknown Source)

at java.lang.Class.newInstance(Unknown Source)

at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1104)

at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:806)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:133)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)

at java.lang.Thread.run(Unknown Source)