SpringSecurityOAuth2(4)根据请求URI动态权限判断（补）

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补充上文的根据URI获取权限判断的优化,上文的方法只能根据uri来获取单个权限，无法满足uri可以根据多个或并且的方式来访问的请求。

优化内容：先增加一级获取uri然后判断uri需要什么权限，可以多个并且的权限 等等然后 在经过权限判断器进行拦截判断

新建自定义的url权限判断MyFilterInvocationSecurityMetadataSource 实现FilterInvocationSecurityMetadataSource

/**
 * @Description 根据url获取 url需要访问的权限
 * @Author wwz
 * @Date 2019/08/01
 * @Param
 * @Return
 */
@Component
public class MyFilterInvocationSecurityMetadataSource implements FilterInvocationSecurityMetadataSource {

    private AntPathMatcher antPathMatcher = new AntPathMatcher(); // 模糊匹配 如何 auth/**   auth/auth

    @Override
    public Collection getAttributes(Object object) throws IllegalArgumentException {
        Set set = new HashSet<>();

        String requestUrl = ((FilterInvocation) object).getRequest().getMethod() + ((FilterInvocation) object).getRequest().getRequestURI();
        System.out.println("requestUrl >> " + requestUrl);

        // 这里获取对比数据可以从数据库或者内存 redis等等地方获取 目前先写死后面优化
        String url = "GET/auth/**";
        if (antPathMatcher.match(url, requestUrl)) {
            SecurityConfig securityConfig = new SecurityConfig("ROLE_ADMIN");
            set.add(securityConfig);
        }
        if (ObjectUtils.isEmpty(set)) {
            return SecurityConfig.createList("ROLE_LOGIN");
        }
        return set;
    }

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

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

修改原来MySecurityAccessDecisionManager 的decide，从获取到url 改成获取到需要什么权限。其他判断不变

    @Override
    public void decide(Authentication authentication, Object object, Collection configAttributes) throws AccessDeniedException, InsufficientAuthenticationException {

        System.out.println("collection>>" + configAttributes);

        for (ConfigAttribute configAttribute : configAttributes) {
            // 当前请求需要的权限
            String needRole = configAttribute.getAttribute();
            // 当前用户所具有的权限
            Collection authorities = authentication.getAuthorities();
            System.out.println("authorities=" + authorities);
            for (GrantedAuthority grantedAuthority : authorities) {
                if (grantedAuthority.getAuthority().equals(needRole)) {
                    return;
                }
                if (grantedAuthority.getAuthority().equals("ROLE_ADMIN")) {
                    return;
                }

            }
        }
        throw new AccessDeniedException("无访问权限");
    }

把MyFilterInvocationSecurityMetadataSource 注册到MySecurityResourceServerConfig的重写方法

 public void configure(HttpSecurity http) throws Exception {
        http
                .csrf().disable()
                .exceptionHandling().authenticationEntryPoint((request, response, authException) -> response.sendError(HttpServletResponse.SC_UNAUTHORIZED))
                .and()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.IF_REQUIRED) // 另外，如果不设置，那么在通过浏览器访问被保护的任何资源时，每次是不同的SessionID，并且将每次请求的历史都记录在OAuth2Authentication的details的中
                .and()
                .authorizeRequests().antMatchers("/actuator/health").permitAll().anyRequest().authenticated()  // httpSecurity 放过健康检查，其他都需要验证  设置了.anyRequest().authenticated()才回进入自定义的权限判断
                .and()
                .requestMatchers().antMatchers("/auth/**") // .requestMatchers().antMatchers(...) OAuth2设置对资源的保护如果是用 /**的话 会把上面的也拦截掉
                .and()
                .authorizeRequests()
                .withObjectPostProcessor(new ObjectPostProcessor() {       // 重写做权限判断
                    @Override
                    public  O postProcess(O o) {
                        o.setSecurityMetadataSource(filterInvocationSecurityMetadataSource); // 请求需要权限
                        o.setAccessDecisionManager(accessDecisionManager);      // 权限判断
                        return o;
                    }
                })
                .and()
                .httpBasic();

        http.exceptionHandling().accessDeniedHandler(accessDeniedHandler);
    }

尝试并请求打印信息：

转载于:https://my.oschina.net/u/3500033/blog/3082402