(exchange) .switchIfEmpty(DispatcherHandler.this.createNotFoundError()) //如果没有返回不为 Mono.empty() 的...(exchange) //根据请求寻找路由 .flatMap((Function<Route, Mono<?...(exchange) //根据请求寻找路由 .flatMap((Function<Route, Mono<?...()，所以后面的 flatMap 其实不会执行了。...(exchange) //根据请求寻找路由 .flatMap((Function<Route, Mono<?
.flatMap((m) -> continueFilterChain(exchange, chain)) // switchIfEmpty实际是继续.filter(MatchResult....switchIfEmpty( Mono.defer(() -> Mono.error(new CsrfException("An expected CSRF token cannot....switchIfEmpty(Mono.defer(() -> Mono.error(new CsrfException("Invalid CSRF Token")))).then(); }...return exchange.getFormData().flatMap((data) -> Mono.justOrEmpty(data.getFirst(expected.getParameterName...从exchagne得到request对象 .flatMap((r) -> Mono.justOrEmpty(r.getMethod())) // 得到http request的method
== null) {}的这个条件是永远成立的，这是因为当Mono是empty时，它是不会触发flatMap的。...// Transform Mono to Mono>. // If Mono is empty, flatMap will not...be triggered, // then we will get a empty Mono> .flatMap(token -> Mono.just...// Since Mono> is not empty, flatMap will always be triggered. .flatMap(tokenOptional...还提供了switchIfEmpty、repeatWhenEmpty来处理empty Mono/Flux。
(exchange) //根据请求寻找路由 .flatMap((Function<Route, Mono<?...RoutePredicateHandlerMapping.this.webHandler); //返回 RoutePredicateHandlerMapping 的 FilteringWebHandler }).switchIfEmpty...logger.trace("No RouteDefinition found for [" + getExchangeDesc(exchange) + "]"); } }))) .switchIfEmpty...GatewayFilters 链路 .map(dataBuffer -> decorate(exchange, dataBuffer, cacheDecoratedRequest)) .switchIfEmpty...(Mono.just(exchange.getRequest())).flatMap(function); }) .then(Mono.empty())) ), //调用对应的 Handler
org.springframework.cloud.gateway.handler; import java.util.function.Function; import reactor.core.publisher.Mono...lookupRoute(exchange) // .log("route-predicate-handler-mapping", Level.FINER) //name this .flatMap...((Function<Route, Mono<?...(webHandler); }).switchIfEmpty(Mono.empty().then(Mono.fromRunnable(() -> { exchange.getAttributes...())) // .defaultIfEmpty() put a static Route not found // or .switchIfEmpty() // .switchIfEmpty
GatewayFilters 链路 .map(dataBuffer -> decorate(exchange, dataBuffer, cacheDecoratedRequest)) .switchIfEmpty...(Mono.just(exchange.getRequest())).flatMap(function); } 为何会使用这个 AdaptCachedBodyGlobalFilter 呢？...(exchange) //根据请求寻找路由 .flatMap((Function<Route, Mono<?...logger.trace("No RouteDefinition found for [" + getExchangeDesc(exchange) + "]"); } }))) .switchIfEmpty...(Mono.just(exchange.getRequest())).flatMap(function); }) .then(Mono.empty())) ), //调用对应的 Handler
集合进行请求处理 .concatMap(mapping -> mapping.getHandler(exchange))//通过mapping获取对应的handler .next() .switchIfEmpty...(createNotFoundError()) .flatMap(handler -> invokeHandler(exchange, handler))//调用handler处理 .flatMap...return lookupRoute(exchange) // .log("route-predicate-handler-mapping", Level.FINER) //name this .flatMap...(webHandler); }).switchIfEmpty(Mono.empty().then(Mono.fromRunnable(() -> { exchange.getAttributes... mono = webHandler.handle(exchange); return mono.then(Mono.empty()); } 5、Gateway核心控制器FilteringWebHandler
——巴尔扎克 之前分享过一个# satoken+webflux获取header以及body 今天遇到BUG了 需要在filter方法结尾添加一个switchIfEmpty(chain.filter(...org.springframework.web.server.WebFilterChain; import reactor.core.publisher.Flux; import reactor.core.publisher.Mono...dataBufferFactory() { return new DefaultDataBufferFactory(); } @Override public Mono...SaReactorSyncHolder.setContext(exchange); return DataBufferUtils.join(exchange.getRequest().getBody()) .flatMap...return super.filter(exchange.mutate().request(decoratedRequest).build(), chain); }).switchIfEmpty
// .log("route-predicate-handler-mapping", Level.FINER) //name this .flatMap...(webHandler); }).switchIfEmpty(Mono.empty().then(Mono.fromRunnable(() -> {....concatMap(mapping -> mapping.getHandler(exchange)) .next() .switchIfEmpty...(Mono.error(HANDLER_NOT_FOUND_EXCEPTION)) .flatMap(handler -> invokeHandler(exchange,...handler)) .flatMap(result -> handleResult(exchange, result)); } //...... } 这里
.concatMap(mapping -> mapping.getHandler(exchange))11 .next()12 .switchIfEmpty...(Mono.error(HANDLER_NOT_FOUND_EXCEPTION))13 .flatMap(handler -> invokeHandler(exchange..., handler))14 .flatMap(result -> handleResult(exchange, result));15 } 第一步，我们先来看一看几个主要的类及其方法...)19 // .defaultIfEmpty() put a static Route not found20 // or .switchIfEmpty...()21 // .switchIfEmpty(Mono.
((Function {exchange.getAttributes().remove...()))// .defaultIfEmpty() put a static Route not found// or .switchIfEmpty()// .switchIfEmpty(Mono....(createNotFoundError())// 3.调用对应的处理器.flatMap(handler -> invokeHandler(exchange, handler))// 4.返回处理结果....flatMap(result -> handleResult(exchange, result));}以上内容仅为本人学习所用，如有侵权请联系！
return personRepository.findById(Long.parseLong(serverRequest.pathVariable("id"))) .flatMap...(p -> personRepository.delete(p).then(ServerResponse.ok().build())) .switchIfEmpty(ServerResponse.notFound...所有方法的返回值类型都是 Mono，参数类型都是 ServerRequest，因为一会配置 Router 时涉及到的 HandlerFunction 里边就是这样定义的，...return personRepository.findById(parseLong(serverRequest.pathVariable("id"))) .flatMap...(p -> personRepository.delete(p).then(ok().build())) .switchIfEmpty(notFound().build(
()) .flatMap((c) -> Mono.from(c.createStatement("select id,firstname,lastname from users...return Mono.from(connectionFactory.create()) .flatMap(c -> Mono.from(c.createStatement...String.class), row.get("lastname", String.class)))) .flatMap...(connectionFactory.create()) .flatMap(c -> Mono.from(c.beginTransaction())...usersDao.findById(id) .map(acc -> new ResponseEntity(acc, HttpStatus.OK)) .switchIfEmpty
JwtTokenFilter(ReactiveJwtDecoder jwtDecoder) { this.jwtDecoder = jwtDecoder; } @Override public Mono...= authorizationHeader.substring(7); return jwtDecoder.decode(token) .flatMap...exchange.getPrincipal() .cast(OAuth2AuthenticationToken.class) .flatMap...authentication.getAuthorizedClientRegistrationId(), authentication.getName()) .flatMap...return chain.filter(exchange); }) .switchIfEmpty
MonoWebFilterTrace(source, RoutePredicateHandlerMapping.this.lookupRoute(exchange) //根据请求寻找路由 .flatMap...RoutePredicateHandlerMapping.this.webHandler); //返回 RoutePredicateHandlerMapping 的 FilteringWebHandler }).switchIfEmpty...logger.trace("No RouteDefinition found for [" + getExchangeDesc(exchange) + "]"); } }))) .switchIfEmpty...GatewayFilters 链路 .map(dataBuffer -> decorate(exchange, dataBuffer, cacheDecoratedRequest)) .switchIfEmpty...(Mono.just(exchange.getRequest())).flatMap(function); }) .then(Mono.empty())) ), //调用对应的 Handler
RequestBody 缓存我们使用的是 Spring Cloud Gateway 中的 AdaptCachedBodyGlobalFilter，其核心源码是： private static Mono...cacheRequestBody(ServerWebExchange exchange, boolean cacheDecoratedRequest, Function<ServerHttpRequest, Mono...GatewayFilters 链路 .map(dataBuffer -> decorate(exchange, dataBuffer, cacheDecoratedRequest)) .switchIfEmpty...(Mono.just(exchange.getRequest())).flatMap(function); } 为何会使用这个 AdaptCachedBodyGlobalFilter 呢？
this.messageReaders); return getRoutingFunction(this.errorAttributes).route(request) .switchIfEmpty...(Mono.error(throwable)) .flatMap((handler) -> handler.handle(request))....doOnNext((response) -> logError(request, response, throwable)) .flatMap((response) -..."error/" + SERIES_VIEWS.get(errorStatus.series()), "error/error") .flatMap...((viewName) -> renderErrorView(viewName, responseBody, error)) .switchIfEmpty(this.errorProperties.getWhitelabel
Mono getContext() { return Mono.subscriberContext() .filter( c...-> c.hasKey(SECURITY_CONTEXT_KEY)) .flatMap( c-> c....>get(SECURITY_CONTEXT_KEY)); } /** * Clears the {@code Mono} */ public static Context withSecurityContext(Mono<?....switchIfEmpty(Mono.error(new IllegalStateException("ReactiveSecurityContext is empty
由于Reactor具有更多开箱即用的组合运算符，因此可以简化此过程： 与未来代码等效的Reactor代码示例 Fluxids = ifhrIds(); Fluxcombinations = ids.flatMap...对于序列中的每个元素，我们异步处理它（在body函数内部flatMap）两次。 获取相关名称。 获取相关统计信息。 异步组合2个值。 在将值List变为可用时将值聚合为a 。...在生产中，我们将继续Flux通过进一步组合或订阅它来异步处理。最有可能的是，我们会回归result Mono。由于我们在测试中，我们阻塞，等待处理完成，然后直接返回聚合的值列表。 断言结果。...从命令式到反应式编程 诸如Reactor之类的反应库旨在解决JVM上“经典”异步方法的这些缺点，同时还关注一些其他方面： 可组合性和可读性 数据作为一个用丰富的运算符词汇表操纵的流程 在您订阅之前没有任何事情发生...操作符（运算符） 在Reactor中，运算符是我们的汇编类比中的工作站。每个操作符都将行为添加到a Publisher并将上一步骤包装Publisher到新实例中。
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