import hudson.util.XStream2; //导入依赖的package包/类
@Initializer(before = InitMilestone.JOB_LOADED)
@Restricted(NoExternalUse.class)
public static void packageRenameConverting() {
    for(XStream2 xs : Arrays.asList(Items.XSTREAM2, Run.XSTREAM2, Jenkins.XSTREAM2, getFingerprintXStream())) {
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.DockerHubTrigger",
                                 DockerHubTrigger.class);
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.DockerHubWebHookCause",
                                 DockerHubWebHookCause.class);
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.DockerPullImageBuilder",
                                 DockerPullImageBuilder.class);
        //TODO no back-compat tests for the column and filter
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.TriggerListViewColumn",
                                 TriggerListViewColumn.class);
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.TriggerViewFilter",
                                 TriggerViewFilter.class);
        //The TriggerOption extension point has also changed package name and will not be backwards compatible API
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.opt.impl.TriggerForAllUsedInJob",
                                 TriggerForAllUsedInJob.class);
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.opt.impl.TriggerOnSpecifiedImageNames",
                                 TriggerOnSpecifiedImageNames.class);
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.TriggerStore$TriggerEntry",
                                 TriggerStore.TriggerEntry.class);
        xs.addCompatibilityAlias("org.jenkinsci.plugins.dockerhub.notification.TriggerStore$TriggerEntry$RunEntry",
                                 TriggerStore.TriggerEntry.RunEntry.class);
    }
}
 

import hudson.util.XStream2; //导入依赖的package包/类
public void doSubmit(StaplerRequest req, StaplerResponse rsp) throws ServletException, IOException {
    // '$class' in form data tells Stapler which Fruit subclass to use,
    // older versions of Jenkins/Stapler used 'stapler-class'
    Fruit fruit = req.bindJSON(Fruit.class, req.getSubmittedForm().getJSONObject("fruit"));
    rsp.setContentType("text/plain");
    new XStream2().toXML(fruit, rsp.getWriter());
}
 

import hudson.util.XStream2; //导入依赖的package包/类
@Initializer(before=InitMilestone.PLUGINS_STARTED)
public static void initializeXStream() {
	InheritableParameterReferenceConverter conv = new InheritableParameterReferenceConverter();
	
	final XStream2[] xs = {
			Jenkins.XSTREAM2, Run.XSTREAM2, Items.XSTREAM2
	};
	for (XStream2 x : xs) {
		//Add the custom converter to hide some fields
		x.registerConverter(conv);
	}
}