前后端分离的Web应用程序中使用Spring Security+Mybatis+JWT非对称加密+动态权限管理（四）：自定义动态权限元数据配置类

package com.security;

import java.util.Collection;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;
import org.springframework.stereotype.Component;
import org.springframework.util.AntPathMatcher;

import com.entity.Menu;
import com.repository.MenuRepository;

@Component
public class CustomSecurityMetadataSource implements FilterInvocationSecurityMetadataSource {
    @Autowired
    MenuRepository menuRepository;
    AntPathMatcher antPathMatcher = new AntPathMatcher();

    @Override
    public Collection<ConfigAttribute> getAttributes(Object object) throws IllegalArgumentException {
        String requestURI = ((FilterInvocation) object).getRequest().getRequestURI();
        List<Menu> allMenu = menuRepository.getAllMenu();
        for (Menu menu : allMenu) {
            if (antPathMatcher.match(menu.getPattern(), requestURI)) {
                //将List转成数组
                String[] roles = menu.getRoles().stream().map(r -> r.getNameEn()).toArray(String[]::new); 
                return SecurityConfig.createList(roles);
            }
        }
        return null;
    }

    @Override
    public Collection<ConfigAttribute> getAllConfigAttributes() {
        return null;
    }

    @Override
    public boolean supports(Class<?> clazz) {
        return FilterInvocation.class.isAssignableFrom(clazz);
    }
}