在spring中获取所有@PreAuthorize List<string>

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

@Component
public class PreAuthorizeScanner {

    @Autowired
    private ApplicationContext applicationContext;

    public List<String> getAllPreAuthorizeExpressions() {
        List<String> preAuthorizeExpressions = new ArrayList<>();

        Map<String, Object> beans = applicationContext.getBeansWithAnnotation(Component.class);
        for (Object bean : beans.values()) {
            Class<?> beanClass = bean.getClass();
            Method[] methods = beanClass.getDeclaredMethods();
            for (Method method : methods) {
                if (method.isAnnotationPresent(PreAuthorize.class)) {
                    PreAuthorize preAuthorize = method.getAnnotation(PreAuthorize.class);
                    String expression = preAuthorize.value();
                    preAuthorizeExpressions.add(expression);
                }
            }
        }

        return preAuthorizeExpressions;
    }
}