自定义注解实现接口放行配置

1、注解Anonymous
注解支持类和方法名

/**
 * 自定义放行接口
 */
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Anonymous {
}

2、注解解析器
获取包含Anonymous 注解的方法和类，解析出各接口url，放置到List中。初始化后，springBean中将有一个PermitAllUrlProperties的对象。

import lombok.Getter;
import lombok.Setter;
import org.apache.commons.lang3.RegExUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.AnnotationUtils;


import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;

import java.util.*;
import java.util.regex.Pattern;

/**
 * 设置Anonymous注解允许匿名访问的url
 *
 */
@Configuration
public class PermitAllUrlProperties implements InitializingBean, ApplicationContextAware
{
    private static final Pattern PATTERN = Pattern.compile("\\{(.*?)\\}");

    private ApplicationContext applicationContext;

    @Getter
    @Setter
    private List<String> urls = new ArrayList<>();

    public String ASTERISK = "*";

    @Override
    public void afterPropertiesSet()
    {
        RequestMappingHandlerMapping mapping = applicationContext.getBean(RequestMappingHandlerMapping.class);
        Map<RequestMappingInfo, HandlerMethod> map = mapping.getHandlerMethods();

        map.keySet().forEach(info -> {
            HandlerMethod handlerMethod = map.get(info);

            // 获取方法上边的注解 替代path variable 为 *
            Anonymous method = AnnotationUtils.findAnnotation(handlerMethod.getMethod(), Anonymous.class);
            Optional.ofNullable(method).ifPresent(anonymous -> Objects.requireNonNull(info.getPatternsCondition().getPatterns())
                    .forEach(url -> urls.add(RegExUtils.replaceAll(url, PATTERN, ASTERISK))));

            // 获取类上边的注解, 替代path variable 为 *
            Anonymous controller = AnnotationUtils.findAnnotation(handlerMethod.getBeanType(), Anonymous.class);
            Optional.ofNullable(controller).ifPresent(anonymous -> Objects.requireNonNull(info.getPatternsCondition().getPatterns())
                    .forEach(url -> urls.add(RegExUtils.replaceAll(url, PATTERN, ASTERISK))));
        });
    }

    @Override
    public void setApplicationContext(ApplicationContext context) throws BeansException
    {
        this.applicationContext = context;
    }

}

3、修改SecurityConfig
将PermitAllUrlProperties对象注入SecurityConfig中，然后获取需要匿名访问的接口，完成对每个接口的匿名访问配置。

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
@Slf4j
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled = true, prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    //成功返回
    @Autowired
    MyAuthenticationSuccessHandler myAuthenticationSuccessHandler;
    //失败返回控制器
    @Autowired
    MyAuthenticationFailureHandler myAuthenticationFailureHandler;
    //未登录时
    @Autowired
    MyAuthenticationEntryPoint myAuthenticationEntryPoint;
    /**
     * 允许匿名访问的地址
     */
    @Autowired
    private PermitAllUrlProperties permitAllUrl;
    //密码编码器
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Autowired
    private PasswordEncoder passwordEncoder;
    @Autowired
    private UserDetailsService userDetailsService;
    @Autowired
    JWTAuthenticationFilter jwtAuthenticationFilter;

    @Bean
    public IgnoreUrlsConfig ignoreUrlsConfig() {
        return new IgnoreUrlsConfig();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry registry = http.authorizeRequests();
        //不需要保护的资源路径允许访问
        for (String url : ignoreUrlsConfig().getUrls()) {
           log.info("放行路径:--{}",url);
            registry.antMatchers(url).permitAll();
        }
        permitAllUrl.getUrls().forEach(url -> {
            System.out.println(url);
            registry.antMatchers(url).permitAll();
        });
        //允许跨域请求的OPTIONS请求
        registry.antMatchers(HttpMethod.OPTIONS).permitAll();
        registry.and().authorizeRequests()
                .anyRequest().authenticated()
                //授权
                .and()
                .formLogin()
                .loginProcessingUrl("/login")
                .usernameParameter("name")
                .passwordParameter("pass")
                //登录成功
                .successHandler(myAuthenticationSuccessHandler)
                //登录失败
                .failureHandler(myAuthenticationFailureHandler)
                .and()
                .exceptionHandling()
                .authenticationEntryPoint(myAuthenticationEntryPoint)
                .and().csrf().disable()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter.class); // 添加token过滤器

    }

    /**
     * 内存中构建账户密码
     *
     * @param auth
     * @throws Exception
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder);
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        super.configure(web);
    }