我已经单独构建了:
尤里卡服务器, Spring Cloud Gateway(+发现客户端), Spring Web 应用程序(+ 发现客户端)
Eureka Server Main Class
:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer
public class ServiceRegistryApplication {
public static void main(String[] args) {
SpringApplication.run(ServiceRegistryApplication.class, args);
}
}
和application.yml
server:
port: 8761
eureka:
client:
fetch-registry: false
register-with-eureka: false
Gateway Main Class
:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@SpringBootApplication
@EnableEurekaClient
public class GatewayApplication {
public static void main(String[] args) {
SpringApplication.run(GatewayApplication.class, args);
}
}
和application.yml
server:
port: 8080
spring:
application:
name: GATEWAY
cloud:
gateway:
routes:
-id: MICROSERVICE
uri: lb://MICROSERVICE
predicates:
- Path: /service/**
eureka:
client:
register-with-eureka: true
fetch-registry: true
service-url:
defualtZone: http://localhost:8761/eureka
instance: localhost
Microservice Main Class
:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@SpringBootApplication
@EnableEurekaClient
public class MicroserviceApplication {
public static void main(String[] args) {
SpringApplication.run(MicroserviceApplication.class, args);
}
}
Microservice Controller
:
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RequestMapping
@RestController
public class HelloController {
@GetMapping("/test")
public String getWelcomed() {
return "Welcome to Microservice !";
}
}
和application.yml
server:
port: 8099
spring:
application:
name: MICROSERVICE
eureka:
client:
register-with-eureka: true
fetch-registry: true
service-url:
defualtZone: http://localhost:8761/eureka
instance: localhost
我现在的问题是我无法通过网关访问我的微服务“/test”调用。 我不断收到此错误:
<块引用>Whitelabel Error Page 此应用程序没有配置错误视图, 所以你认为这是一个后备。
Wed Dec 23 21:10:14 WEST 2020 [3c6a9e3d-9] 发生了意外 错误(类型=未找到,状态=404)。 org.springframework.web.server.ResponseStatusException: 404 NOT_FOUND 在 org.springframework.web.reactive.resource.ResourceWebHandler.lambda$handle$0(ResourceWebHandler.java:325) 抑制: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 错误有 在以下地点观察到:|_ 检查站 ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain] |_ 检查点 ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain] |_ checkpoint ⇢ HTTP GET "/service/test" [ExceptionHandlingWebHandler] 堆栈跟踪:在 org.springframework.web.reactive.resource.ResourceWebHandler.lambda$handle$0(ResourceWebHandler.java:325) 在 reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:44) 在 reactor.core.publisher.Mono.subscribe(Mono.java:4252) 在 reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:75) 在 reactor.core.publisher.MonoFlatMap$FlatMapMain.onComplete(MonoFlatMap.java:174) 在 reactor.core.publisher.MonoNext$NextSubscriber.onComplete(MonoNext.java:96) 在 reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:359) 在 reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:211) 在 reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:161) 在 reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:86) 在 reactor.core.publisher.Mono.subscribe(Mono.java:4252) 在 reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172) 在 reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) 在 reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) 在 reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) 在 reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76) 在 reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.innerNext(FluxConcatMap.java:274) 在 reactor.core.publisher.FluxConcatMap$ConcatMapInner.onNext(FluxConcatMap.java:851) 在 reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121) 在 reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2344) 在 reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162) 在 reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:2152) 在 reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:2026) 在 reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90) 在 reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54) 在 reactor.core.publisher.Mono.subscribe(Mono.java:4252) 在 reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:441) 在 reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:211) 在 reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:161) 在 reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:86) 在 reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) 在 reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) 在 reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) 在 reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) 在 reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) 在 reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) 在 reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) 在 reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) 在 reactor.core.publisher.Mono.subscribe(Mono.java:4252) 在 reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172) 在 reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) 在 reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) 在 reactor.netty.http.server.HttpServerHandle.onStateChange(HttpServerHandle.java:65) 在 reactor.netty.ReactorNetty$CompositeConnectionObserver.onStateChange(ReactorNetty.java:518) 在 reactor.netty.tcp.TcpServerBind$ChildObserver.onStateChange(TcpServerBind.java:278) 在 reactor.netty.http.server.HttpServerOperations.onInboundNext(HttpServerOperations.java:475) 在 reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:96) 在 io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) 在 io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) 在 io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) 在 reactor.netty.http.server.HttpTrafficHandler.channelRead(HttpTrafficHandler.java:191) 在 io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) 在 io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) 在 io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) 在 io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) 在 io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) 在 io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296) 在 io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) 在 io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) 在 io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) 在 io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) 在 io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) 在 io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) 在 io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) 在 io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) 在 io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) 在 io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719) 在 io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655) 在 io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581) 在 io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) 在 io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) 在 io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) 在 io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) 在 java.base/java.lang.Thread.run(Thread.java:834)
根据我发现的一些建议,我尝试将网关从我的尤里卡服务器中隐藏,但通过将其添加到网关中的 application.yml
中,问题仍然存在:
eureka:
client:
register-with-eureka: false
fetch-registry: false
答案 0 :(得分:2)
控制器应该是
@RestController
@RequestMapping("/service")
public class HelloController
和网址:http://localhost:8080/service/test
或者您可以将 @RequestMapping()
留在控制器中并使用此路径创建网关:
predicates:
-Path=/**
那么 URL 应该是:http://localhost:8080/test