在Axon配置中指定快照的安全上下文，示例如下：

@Configuration
public class AxonConfig {

    @Bean
    public XStreamSerializer xStreamSerializer() {
        return XStreamSerializer.builder()
                .build();
    }

    @Bean
    public JpaEventStorageEngine jpaEventStorageEngine(Serializer serializer, DataSource dataSource) {
        return JpaEventStorageEngine.builder()
                .snapshotSerializer(serializer)
                .eventSerializer(serializer)
                .dataSource(dataSource)
                .build();
    }

    @Bean
    public SnapshotTriggerDefinition snapshotTriggerDefinition(Snapshotter snapshotter) {
        return new EventCountSnapshotTriggerDefinition(snapshotter, 100);
    }

    @Bean
    public SpringAggregateSnapshotter snapshotter(JpaEventStorageEngine eventStorageEngine) {
        return new SpringAggregateSnapshotter(eventStorageEngine);
    }

    @Bean
    public Snapshotter snapshotter(JpaEventStorageEngine eventStorageEngine, EventBus eventBus) {
        return new AggregateSnapshotter(eventStorageEngine, eventBus);
    }

    @Bean
    public EventStorageEngine eventStorageEngine(Serializer serializer, DataSource dataSource) {
        return JpaEventStorageEngine.builder()
                .snapshotSerializer(serializer)
                .eventSerializer(serializer)
                .dataSource(dataSource)
                .build();
    }

    @Bean
    public EventProcessor snapshotEventProcessor(EventBus eventBus, EventStorageEngine eventStorageEngine, SnapshotTriggerDefinition snapshotTriggerDefinition) throws Exception {
        return TrackingEventProcessor.builder()
                .eventHandlerInvoker(new SimpleEventHandlerInvoker(snapshotter(eventStorageEngine)))
                .messageSource(eventStorageEngine)
                .tokenStore(getTransactionAwareTokenStore())
                .name("snapshotEventProcessor")
                .build();
    }

}