之前文章里说过,分布式系统的鉴权有两种方式,一是在网关进行统一的鉴权操作,二是在各个微服务里单独鉴权。
第二种方式比较常见,代码网上也是很多。今天主要是说第一种方式。
1.网关鉴权的流程
重要前提:需要收集各个接口的uri路径和所需权限列表的对应关系,并存入缓存。
2.收集uri路径和对应权限
服务启动的时候,执行缓存数据的初始化操作:扫描服务内的所有controller接口方法,利用反射,获取方法的完整uri路径,方法上指定注解中的权限值,再存入Redis缓存。
服务启动时做一些操作,方法有很多,可以继承CommandLineRunner或者其他方式。不熟悉的可以去查一下有关资料。
因为后续可能会有很多微服务,因此将该缓存数据的初始化的操作放在common模块中,微服务依赖该模块完成。
1.1.初始化方法
import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.text.StrPool;
import cn.hutool.core.util.ArrayUtil;
import com.eden4cloud.common.core.contant.CacheConstants;
import com.eden4cloud.common.security.anno.Perms;
import com.eden4cloud.common.security.constant.MethodTypeConstant;
import com.eden4cloud.common.security.utils.RequestUriUtils;
import com.eden4cloud.common.util.StringUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.util.StringUtil;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @Param:
* @Return:
* @Date: 2022/12/3 15:31
* @Author: Yan
* @Description: 接口权限初始化采集,获取数据库中的权限标识,没有权限标识的其它接口使用**表示
*/
@Slf4j
public class ApiPermsInit implements ApplicationContextAware {
/**
* 接口路径及权限列表
* 比如:/user/list<br>
* 不支持@PathVariable格式的URI
*/
public static List<Map<String, String>> oauthUrls = new ArrayList<>();
Map<String, String> uriAuthMap = new HashMap<>();
/**
* Url参数需要解密的配置
* 比如:/user/list?name=加密内容<br>
* 格式:Key API路径 Value 需要解密的字段
* 示列:/user/list [name,age]
*/
public static Map<String, List<String>> requestDecryptParamMap = new HashMap<>();
private String applicationPath;
@Autowired
private RedisTemplate redisTemplate;
@Override
public void setApplicationContext(ApplicationContext ctx) throws BeansException {
this.applicationPath = ctx.getEnvironment().getProperty("spring.application.name");
Map<String, Object> beanMap = ctx.getBeansWithAnnotation(Controller.class);
initData(beanMap);
if (CollectionUtil.isNotEmpty(uriAuthMap)) {
redisTemplate.boundHashOps(CacheConstants.OAUTH_URLS).putAll(uriAuthMap);
}
}
/**
* 初始化,获取所有接口的加解密配置状态并保存
*
* @param beanMap
*/
private void initData(Map<String, Object> beanMap) {
if (beanMap != null) {
beanMap.values().parallelStream().map(Object::getClass).forEach(clz -> {
for (Method method : clz.getDeclaredMethods()) {
String uriKey = RequestUriUtils.getApiUri(clz, method, applicationPath);
//收集带有Perms注解的api接口的uri路径
Perms perms = AnnotationUtils.findAnnotation(method, Perms.class);
if (StringUtils.isNotEmpty(uriKey) && perms != null && ArrayUtil.isNotEmpty(perms.value())) {
//解析权限标识
String authValue = StringUtil.join(perms.value(), StrPool.COMMA);
uriAuthMap.put(uriKey, authValue);
} else if (uriKey.startsWith(MethodTypeConstant.GET)) {
/* 屏蔽没有请求方式的api接口 */
//没有权限标识的,直接使用**表示
uriAuthMap.put(uriKey, "**");
} else if (uriKey.startsWith(MethodTypeConstant.POST)) {
//没有权限标识的,直接使用**表示
uriAuthMap.put(uriKey, "**");
} else if (uriKey.startsWith(MethodTypeConstant.PUT)) {
//没有权限标识的,直接使用**表示
uriAuthMap.put(uriKey, "**");
} else if (uriKey.startsWith(MethodTypeConstant.DELETE)) {
//没有权限标识的,直接使用**表示
uriAuthMap.put(uriKey, "**");
} else {
//不在上述情况中的,一般为框架提供的api接口
log.info(uriKey);
}
}
});
}
}
}
1.2.对应的工具类
import com.eden4cloud.common.security.constant.MethodTypeConstant;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.web.bind.annotation.*;
import java.lang.reflect.Method;
public class RequestUriUtils {
private static final String SEPARATOR = "/";
/**
* 获取接口的uri路径
*
* @param clz
* @param method
* @param applicationPath
* @return
*/
public static String getApiUri(Class<?> clz, Method method, String applicationPath) {
String methodType = "";
StringBuilder uri = new StringBuilder();
// 处理类路径
RequestMapping reqMapping = AnnotationUtils.findAnnotation(clz, RequestMapping.class);
if (reqMapping != null && reqMapping.value().length > 0) {
uri.append(formatUri(reqMapping.value()[0]));
}
//处理方法上的路径
GetMapping getMapping = AnnotationUtils.findAnnotation(method, GetMapping.class);
PostMapping postMapping = AnnotationUtils.findAnnotation(method, PostMapping.class);
RequestMapping requestMapping = AnnotationUtils.findAnnotation(method, RequestMapping.class);
PutMapping putMapping = AnnotationUtils.findAnnotation(method, PutMapping.class);
DeleteMapping deleteMapping = AnnotationUtils.findAnnotation(method, DeleteMapping.class);
if (getMapping != null && getMapping.value().length > 0) {
methodType = MethodTypeConstant.GET;
uri.append(formatUri(getMapping.value()[0]));
} else if (postMapping != null && postMapping.value().length > 0) {
methodType = MethodTypeConstant.POST;
uri.append(formatUri(postMapping.value()[0]));
} else if (putMapping != null && putMapping.value().length > 0) {
methodType = MethodTypeConstant.PUT;
uri.append(formatUri(putMapping.value()[0]));
} else if (deleteMapping != null && deleteMapping.value().length > 0) {
methodType = MethodTypeConstant.DELETE;
uri.append(formatUri(deleteMapping.value()[0]));
} else if (requestMapping != null && requestMapping.value().length > 0) {
RequestMethod requestMethod = RequestMethod.GET;
if (requestMapping.method().length > 0) {
requestMethod = requestMapping.method()[0];
}
methodType = requestMethod.name().toLowerCase() + ":";
uri.append(formatUri(requestMapping.value()[0]));
}
// 框架自带的接口,返回null后,直接忽略处理
if (uri.indexOf("${") > 0) {
return "";
}
// 针对Rest请求,路径上的请求参数进行处理,以**代替
int idx = uri.indexOf("{");
if (idx > 0) {
uri = new StringBuilder(uri.substring(0, idx)).append("**");
}
return methodType + SEPARATOR + applicationPath + uri;
}
private static String formatUri(String uri) {
if (uri.startsWith(SEPARATOR)) {
return uri;
}
return SEPARATOR + uri;
}
}
收集结果:
说明:
- 要求一个请求的完整路径格式为:请求方式:/服务名/类路径/方法路径;
- 请求方式必须要有,防止路径处理后,会出现重复,加上请求方式可以极大避免;
- 服务名是为了做网关路由使用,在配置网关的路由规则时,断言的路由规则即为/服务名;代码里获取服务路径的方式是:ctx.getEnvironment().getProperty("spring.application.name");如果觉得不安全可以在yml文件中自定义一个路径名,改一下此处的获取值即可。只需要记得一定要和网关的路由断言规则匹配就行!!!!
- 类路径必须有。
- 方法路径必须有。方法上的第一个路径必须是固定路径,而不能是请求参数,另外不同方法上的第一个固定路径避免设置成相同的;也是为了防止最终出现请求方式相同、路径也相同的情况。
- 对Rest风格,且方法路径上带有路径参数的路径必须做特殊处理,即将路径参数替换成**。举例如下:原完整路径为/user-Service/user/queryUser/{username}/{age},方法上的路径为/queryUser/{username}/{age},不论有多少个路径参数,从第一个路径参数开始,全部替换掉,处理为/queryUser/**,最终存入缓存所使用的完整路径为:GET:/user-Service/user/queryUser/**。否则当请求到达网关,你想要根据路径去缓存中匹配对应的路径时,你会发现没办法处理,因为从请求的uri路径上你是看不出来哪是固定路径,哪是路径参数的。例如:/user-Service/user/queryUser/zhangsan/18,这个例子你虽然你看都知道哪个是路径参数,但毕竟是框架,万一路径上有很多的/../../..,还怎么猜?有些规则该定死,还是要定死的。
- 真实请求到达网关后,我们对真实请求也做了一些处理,即:只保留/服务名/类路径/方法路径的第一个,后续的路径均使用一个/**替换掉。举例:真实请求为/user-Service/user/queryUser/zhangsan/18,我们处理后为/user-Service/user/queryUser/**。
经过上述的规定和路径处理后,在下面的代码中进行匹配操作:
- methodValue + uri + CacheConstants.FUZZY_PATH即为/user-Service/user/queryUser/**;
- k.toString()即为/user-Service/user/queryUser/**;
- 判断结果为true。
2.网关整合Security Oauth2
Gateway网关是基于webFlux实现的,所以和一般微服务整合方式不太一样。
2.1.认证管理器
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.ReactiveAuthenticationManager;
import org.springframework.security.core.Authentication;
import org.springframework.security.oauth2.common.OAuth2AccessToken;
import org.springframework.security.oauth2.provider.OAuth2Authentication;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.server.resource.BearerTokenAuthenticationToken;
import org.springframework.security.oauth2.server.resource.InvalidBearerTokenException;
import org.springframework.stereotype.Component;
import reactor.core.publisher.Mono;
/**
* @Since: 2023/4/13
* @Author: Yan
* @Description Jwt认证管理器,对token的真实性、有效性进行校验
*/
@Component
@Slf4j
public class JwtAuthenticationManager implements ReactiveAuthenticationManager {
@Autowired
private TokenStore tokenStore;
@Override
public Mono<Authentication> authenticate(Authentication authentication) {
return Mono.justOrEmpty(authentication)
.filter(a -> a instanceof BearerTokenAuthenticationToken)
.cast(BearerTokenAuthenticationToken.class)
.map(BearerTokenAuthenticationToken::getToken)
.flatMap((accessToken -> {
//解析令牌
OAuth2AccessToken oAuth2AccessToken = this.tokenStore.readAccessToken(accessToken);
if (oAuth2AccessToken == null) {
return Mono.error(new InvalidBearerTokenException("无效的token"));
} else if (oAuth2AccessToken.isExpired()) {
return Mono.error(new InvalidBearerTokenException("token已过期"));
}
OAuth2Authentication oAuth2Authentication = this.tokenStore.readAuthentication(accessToken);
if (oAuth2Authentication == null) {
return Mono.error(new InvalidBearerTokenException("无效的token"));
} else {
return Mono.just(oAuth2Authentication);
}
}))
.cast(Authentication.class);
}
}
2.2..鉴权管理器
import cn.hutool.core.text.AntPathMatcher;
import cn.hutool.core.text.StrPool;
import com.eden4cloud.common.core.contant.CacheConstants;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.authorization.AuthorizationDecision;
import org.springframework.security.authorization.ReactiveAuthorizationManager;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.web.server.authorization.AuthorizationContext;
import org.springframework.stereotype.Component;
import reactor.core.publisher.Mono;
import java.util.*;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* @Since: 2023/4/13
* @Author: Yan
* @Description Jwt鉴权管理器:从Redis中获取所请求的Url所需要的权限,和用户token中所携带的权限进行比对
*/
@Slf4j
@Component
public class JwtAuthorizationManager implements ReactiveAuthorizationManager<AuthorizationContext> {
@Autowired
private RedisTemplate<String, Object> redisTemplate;
private AntPathMatcher matcher = new AntPathMatcher();
/**
* *****当前匹配方法要求一个API接口方法上必须要有路径*****
*
* @param mono
* @param authorizationContext
* @return
*/
@Override
public Mono<AuthorizationDecision> check(Mono<Authentication> mono, AuthorizationContext authorizationContext) {
// 处理当前请求的uri路径,最终格式为:/服务路径/类路径/方法上的路径 /eden-system/user/add
StringBuilder builder = new StringBuilder();
String[] split = authorizationContext.getExchange().getRequest().getURI().getPath().split(StrPool.SLASH);
String uri = builder.append(StrPool.SLASH).append(split[1])//服务路径
.append(StrPool.SLASH).append(split[2])//类路径
.append(StrPool.SLASH).append(split[3])//方法路径
.toString();
// 请求方式拼接处理 ,格式为 GET:
String methodValue = authorizationContext.getExchange().getRequest().getMethodValue() + StrPool.COLON;
// 获取所有路径的权限列表
Map<Object, Object> entries = redisTemplate.opsForHash().entries(CacheConstants.OAUTH_PERMS);
List<String> authorities = new ArrayList<>();
AtomicBoolean authFlag = new AtomicBoolean(false);
entries.forEach((k, v) -> {
// 根据请求uri路径,获取到匹配的缓存权限数据
if (k.equals(methodValue + uri)
|| matcher.match(methodValue + uri + CacheConstants.FUZZY_PATH, k.toString())) {
if (CacheConstants.ANONYMOUS.equals(v.toString())) {
// 权限为**,表示允许匿名访问
authFlag.set(true);
} else {
// 收集当前路径所需的权限列表
authorities.addAll(Arrays.asList((v.toString()).split(StrPool.COMMA)));
}
}
});
// Collection<? extends GrantedAuthority> authorities1 = mono.block().getAuthorities();
List<String> finalAuthorities = authorities;
return mono
//判断是否认证成功
.filter(Authentication::isAuthenticated)
//获取认证后的全部权限列表
.flatMapIterable(Authentication::getAuthorities)
.map(GrantedAuthority::getAuthority)
//如果包含在url要求的权限内,则返回true
.any(auth -> authFlag.get() || finalAuthorities.contains(auth))
.map(AuthorizationDecision::new)
.defaultIfEmpty(new AuthorizationDecision(false))
;
}
}
2.3.security安全配置
import com.eden4cloud.gateway.component.JwtAuthorizationManager;
import com.eden4cloud.gateway.handler.RequestAccessDeniedHandler;
import com.eden4cloud.gateway.handler.RequestAuthenticationEntrypoint;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.ReactiveAuthenticationManager;
import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
import org.springframework.security.config.web.server.SecurityWebFiltersOrder;
import org.springframework.security.config.web.server.ServerHttpSecurity;
import org.springframework.security.oauth2.server.resource.web.server.ServerBearerTokenAuthenticationConverter;
import org.springframework.security.web.server.SecurityWebFilterChain;
import org.springframework.security.web.server.authentication.AuthenticationWebFilter;
import org.springframework.web.cors.reactive.CorsWebFilter;
/**
* @Since: 2023/4/2
* @Author: Yan
* @Description security安全配置
*/
@Configuration
@EnableWebFluxSecurity
public class EdenGatewayWebSecurityConfig {
@Autowired
private JwtAuthorizationManager jwtAuthorizationManager;
@Autowired
private ReactiveAuthenticationManager authenticationManager;
@Autowired
private RequestAuthenticationEntrypoint requestAuthenticationEntrypoint;
@Autowired
private RequestAccessDeniedHandler requestAccessDeniedHandler;
@Autowired
private CorsWebFilter corsWebFilter;
// @Autowired
// private GlobalAuthenticationFilter authenticationFilter;
@Bean
public SecurityWebFilterChain securityWebFilterChain(ServerHttpSecurity http) {
AuthenticationWebFilter authenticationWebFilter = new AuthenticationWebFilter(authenticationManager);
authenticationWebFilter.setServerAuthenticationConverter(new ServerBearerTokenAuthenticationConverter());
http
.csrf().disable()
.authorizeExchange()
//对oauth的端点进行放行
.pathMatchers("/eden-oauth/oauth/**").permitAll()
//其他请求必须鉴权,使用鉴权管理器
.anyExchange().access(jwtAuthorizationManager)
.and()
//鉴权异常处理
.exceptionHandling()
.authenticationEntryPoint(requestAuthenticationEntrypoint)
.accessDeniedHandler(requestAccessDeniedHandler)
.and()
//跨域过滤器
.addFilterAt(corsWebFilter, SecurityWebFiltersOrder.CORS)
//token认证过滤器
.addFilterAt(authenticationWebFilter, SecurityWebFiltersOrder.AUTHENTICATION)
// .addFilterAfter(authenticationFilter, SecurityWebFiltersOrder.AUTHENTICATION)
;
return http.build();
}
}
2.4.将网关作为资源服务
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configurers.ResourceServerSecurityConfigurer;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter;
/**
* @Author: Yan
* @Since: 2023/2/4
* @Description: 资源服务器解析鉴权配置类
*/
@Configuration
public class EdenGatewayResourceServerConfig extends ResourceServerConfigurerAdapter {
@Autowired
private TokenStore tokenStore;
//公钥
private static final String RESOURCE_ID = "eden-gateway";
/**
* Http安全配置,对每个到达系统的http请求链接进行校验
*
* @param http
* @throws Exception
*/
@Override
public void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers("/**").permitAll();
}
/**
* 资源服务的安全配置
*
* @param resources
* @throws Exception
*/
@Override
public void configure(ResourceServerSecurityConfigurer resources) throws Exception {
resources
.resourceId(RESOURCE_ID)
.tokenStore(tokenStore)
.stateless(true);
}
}
2.5.其他配置
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.cloud.gateway.config.GatewayAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;
import org.springframework.web.util.pattern.PathPatternParser;
/**
* @CreateTime: 2023-01-2023/1/11 15:09
* @Author: Yan
* @Description 注册网关过滤器示例
*/
@Configuration
@AutoConfigureAfter(GatewayAutoConfiguration.class)
public class GatewayRoutesConfiguration {
/**
* 跨域配置
*
* @return
*/
@Bean
public CorsWebFilter corsWebFilter() {
CorsConfiguration config = new CorsConfiguration();
config.addAllowedMethod("*");
config.addAllowedOrigin("*");
config.addAllowedHeader("*");
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());
source.registerCorsConfiguration("/**", config);
return new CorsWebFilter(source);
}
// @Bean(name = "ipKeyResolver")
// public KeyResolver userIpKeyResolver() {
// return new IpKeyResolver();
// }
//
// @Bean
// public RouteLocator routeLocator(RouteLocatorBuilder builder) {
// StripPrefixGatewayFilterFactory filterFactory = new StripPrefixGatewayFilterFactory();
// StripPrefixGatewayFilterFactory.Config partsConfig = filterFactory.newConfig();
// partsConfig.setParts(1);
//
// MyGatewayFilterFactory factory = new MyGatewayFilterFactory();
// MyGatewayFilterFactory.PathsConfig pathsConfig = factory.newConfig();
// pathsConfig.setPaths(Arrays.asList("/AAA", "/BBB"));
//
// return builder.routes()
// .route(r -> r.path("/life/**")
// .uri("lb://eden-life")
// .filters(factory.apply(pathsConfig), filterFactory.apply(partsConfig))
// .id("eden-life"))
// .build();
// }
}
2.6.自定义鉴权过滤器工厂
import cn.hutool.core.util.StrUtil;
import com.alibaba.fastjson2.JSONObject;
import com.eden4cloud.common.security.exception.InvalidTokenException;
import com.eden4cloud.common.security.utils.JwtUtils;
import com.eden4cloud.common.util.sign.Base64;
import lombok.Data;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.security.oauth2.common.OAuth2AccessToken;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* @CreateTime: 2023-01-2023/1/11 9:34
* @Author: Yan
* @Description 自定义鉴权过滤器工厂:设置访问白名单;重新封装鉴权认证通过的请求头;
*/
//1. 编写实现类继承AbstractGatewayFilterFactory抽象类
@Component
public class AuthGatewayFilterFactory extends AbstractGatewayFilterFactory<AuthGatewayFilterFactory.IgnoreUrlsConfig> {//4. 指定泛型,静态的内部实体类
@Autowired
private TokenStore tokenStore;
//5. 重写无参构造方法,指定内部实体类接收参数
public AuthGatewayFilterFactory() {
super(IgnoreUrlsConfig.class);
}
@Override
public GatewayFilter apply(IgnoreUrlsConfig config) {
return (exchange, chain) -> {
ServerHttpRequest request = exchange.getRequest();
//直接放行部分请求路径,如登录、退出等 需要排除的路径弄成可yaml配置的
boolean flag = config.ignoreUrls.contains(request.getURI().getPath())
|| config.ignoreUrls.stream().filter(i -> i.endsWith("/**"))
.anyMatch(i -> exchange.getRequest().getURI().getPath().startsWith(i.replace("**", "")));
if (flag) {
return chain.filter(exchange);
}
//重新封装新的请求中数据
ServerWebExchange webExchange = rebuildRequestHeaders(exchange, request);
if (webExchange == null) {
return Mono.error(new InvalidTokenException());
}
return chain.filter(webExchange);
};
}
/**
* 重新封装新的请求数据
*
* @param exchange
* @param request
* @return
*/
private ServerWebExchange rebuildRequestHeaders(ServerWebExchange exchange, ServerHttpRequest request) {
//获取请求头中的令牌
String token = JwtUtils.getToken(request);
if (StrUtil.isBlank(token)) {
return null;
}
OAuth2AccessToken oAuth2AccessToken = tokenStore.readAccessToken(token);
Map<String, Object> additionalInformation = oAuth2AccessToken.getAdditionalInformation();
List<String> authorities = (List<String>) additionalInformation.get("authorities");
//获取用户名
String username = additionalInformation.get("user_name").toString();
//获取用户权限
JSONObject jsonObject = new JSONObject();
jsonObject.put("username", username);
jsonObject.put("authorities", authorities);
//将解析后的token加密后重新放入请求头,方便后续微服务解析获取用户信息
String base64 = Base64.encode(jsonObject.toJSONString().getBytes(StandardCharsets.UTF_8));
request = exchange.getRequest().mutate().header("token", base64).build();
exchange.mutate().request(request);
return exchange;
}
/**
* 6. 重写shortcutFieldOrder()指定接收参数的字段顺序
* Returns hints about the number of args and the order for shortcut parsing.
*
* @return the list of hints
*/
@Override
public List<String> shortcutFieldOrder() {
return Collections.singletonList("ignoreUrls");
}
/**
* 7. 重写shortcutType()指定接收参数的字段类型
*/
@Override
public ShortcutType shortcutType() {
return ShortcutType.GATHER_LIST;
}
/**
* 3. 定义匿名内部实体类,定义接收参数的字段
*/
@Data
public static class IgnoreUrlsConfig {
//传递多个参数
private List<String> ignoreUrls;
}
}
2.7.网关路由规则
#路由配置
spring:
cloud:
gateway:
routes:
- id: eden-life
uri: lb://eden-life
predicates:
- Path=/eden-life/**
filters:
- StripPrefix=1
- name: Auth
args:
ignoreUrls:
- /auth-server/login
- /oauth/**
- /life/**
2.6和2.7主要是展示配置了动态的请求白名单功能。基于nacos的配置中心功能,可以实现动态刷新,白名单设置实时生效。
2.8.异常处理
import cn.hutool.json.JSONUtil;
import com.eden4cloud.common.core.entity.R;
import com.eden4cloud.common.security.exception.SecurityExceptionEnum;
import org.apache.http.HttpHeaders;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.server.authorization.ServerAccessDeniedHandler;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
import java.nio.charset.StandardCharsets;
/**
* @Since: 2023/4/17
* @Author: Yan
* @Description TODO
*/
@Component
public class RequestAccessDeniedHandler implements ServerAccessDeniedHandler {
@Override
public Mono<Void> handle(ServerWebExchange exchange, AccessDeniedException e) {
ServerHttpResponse response = exchange.getResponse();
response.setStatusCode(HttpStatus.OK);
response.getHeaders().add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
DataBuffer buffer = response.bufferFactory()
.wrap(JSONUtil.toJsonStr(R.error(SecurityExceptionEnum.NO_PERMISSION.getMsg())).getBytes(StandardCharsets.UTF_8));
return response.writeWith(Mono.just(buffer));
}
}
import cn.hutool.json.JSONUtil;
import com.eden4cloud.common.core.entity.R;
import com.eden4cloud.common.security.exception.SecurityExceptionEnum;
import org.apache.http.HttpHeaders;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.server.ServerAuthenticationEntryPoint;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
import java.nio.charset.StandardCharsets;
/**
* @Since: 2023/4/17
* @Author: Yan
* @Description TODO
*/
@Component
public class RequestAuthenticationEntrypoint implements ServerAuthenticationEntryPoint {
@Override
public Mono<Void> commence(ServerWebExchange exchange, AuthenticationException e) {
ServerHttpResponse response = exchange.getResponse();
response.setStatusCode(HttpStatus.OK);
response.getHeaders().add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
DataBuffer buffer = response.bufferFactory()
.wrap(JSONUtil.toJsonStr(R.error(SecurityExceptionEnum.INVALID_TOKEN.getMsg())).getBytes(StandardCharsets.UTF_8));
return response.writeWith(Mono.just(buffer));
}
}