import com.sun.xml.internal.ws.policy.PolicyMapUtil; //导入依赖的package包/类
@Override
public void start(final WSDLGenExtnContext context) {
    LOGGER.entering();
    try {
        this.seiModel = context.getModel();

        final PolicyMapConfigurator[] policyMapConfigurators = loadConfigurators();
        final PolicyMapExtender[] extenders = new PolicyMapExtender[policyMapConfigurators.length];
        for (int i = 0; i < policyMapConfigurators.length; i++) {
            extenders[i] = PolicyMapExtender.createPolicyMapExtender();
        }
        // Read policy config file
        policyMap = PolicyResolverFactory.create().resolve(
                new PolicyResolver.ServerContext(policyMap, context.getContainer(), context.getEndpointClass(), false, extenders));

        if (policyMap == null) {
            LOGGER.fine(PolicyMessages.WSP_1019_CREATE_EMPTY_POLICY_MAP());
            policyMap = PolicyMap.createPolicyMap(Arrays.asList(extenders));
        }

        final WSBinding binding = context.getBinding();
        try {
            final Collection<PolicySubject> policySubjects = new LinkedList<PolicySubject>();
            for (int i = 0; i < policyMapConfigurators.length; i++) {
                policySubjects.addAll(policyMapConfigurators[i].update(policyMap, seiModel, binding));
                extenders[i].disconnect();
            }
            PolicyMapUtil.insertPolicies(policyMap, policySubjects, this.seiModel.getServiceQName(), this.seiModel.getPortName());
        } catch (PolicyException e) {
            throw LOGGER.logSevereException(new WebServiceException(PolicyMessages.WSP_1017_MAP_UPDATE_FAILED(), e));
        }
        final TypedXmlWriter root = context.getRoot();
        root._namespace(NamespaceVersion.v1_2.toString(), NamespaceVersion.v1_2.getDefaultNamespacePrefix());
        root._namespace(NamespaceVersion.v1_5.toString(), NamespaceVersion.v1_5.getDefaultNamespacePrefix());
        root._namespace(PolicyConstants.WSU_NAMESPACE_URI, PolicyConstants.WSU_NAMESPACE_PREFIX);

    } finally {
        LOGGER.exiting();
    }
}