解决方案很简单，只需将decorator声明为 @Service ```
@Service
public class OptionalAdapterMethodSecurityExpressionHandler implements MethodSecurityExpressionHandler {

private final MethodSecurityExpressionHandler handler

public CustomMethodSecurityExpressionHandler(MethodSecurityExpressionHandler handler){
    this.handler = handler;
}

@Autowired
public CustomMethodSecurityExpressionHandler(ApplicationContext applicationContext) {
    this(new DefaultMethodSecurityExpressionHandler());
    ((DefaultMethodSecurityExpressionHandler)this.original).setApplicationContext(applicationContext);
}

@Override
public Object filter(Object filterTarget, Expression filterExpression, EvaluationContext ctx) {
    if (filterTarget instanceof Optional) {
        final List<?> optionalUnfilteredList = ((Optional<?>) filterTarget).stream()
            .collect(Collectors.toList());

        final List<?> optionalFilteredList = (List<?>) this.handler.filter(optionalUnfilteredList, filterExpression, ctx);
        return optionalFilteredList.stream()
            .findFirst();
    }
    return this.handler.filter(filterTarget, filterExpression, ctx);
}

...

}