Springboot API网关UnknownHhostException

Question

我无法通过ApiGateway调用微服务。其给出如下 错误。

java.net.UnknownHostException: Failed to resolve 'ORDER-SERVICE' [A(1), AAAA(28)] after 2 queries  at io.netty.resolver.dns.DnsResolveContext.finishResolve(DnsResolveContext.java:1151) ~[netty-resolver-dns-4.1.111.Final.jar:4.1.111.Final] Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:  Error has been observed at the following site(s): *__checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain] *__checkpoint ⇢ HTTP POST "/api/order/create" [ExceptionHandlingWebHandler] 

我看到有几个关于类似问题的问题。我已经尝试了所有的解决方案。但事情仍然没有解决。我正在使用

弹簧靴：3.3.1 春云版本：2023.0.3 爪哇：17

ApiGateway 属性

spring.application.name=api-gateway
eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka/
eureka.instance.prefer-ip-address=true

eureka.instance.hostname=localhost
spring.cloud.gateway.discovery.locator.enabled=true
spring.cloud.gateway.discovery.locator.lower-case-service-id=true
spring.cloud.gateway.routes[0].id=ORDER-SERVICE
spring.cloud.gateway.routes[0].uri=http://ORDER-SERVICE/
spring.cloud.gateway.routes[0].predicates[0]=Path=/api/order/**

spring.cloud.discovery.enabled=true

订购服务

spring.application.name=order-service
eureka.instance.hostname=localhost
eureka.instance.prefer-ip-address=true
server.port=8082

eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka/
spring.cloud.discovery.enabled=true
spring.cloud.gateway.discovery.locator.lower-case-service-id= true
spring.cloud.gateway.discovery.locator.enabled= true

api网关的依赖

<dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-gateway</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-webflux</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter</artifactId>
    </dependency>

Discovery 服务器有 2 个正在运行的实例

如果您能找到解决方案，那将非常有帮助。

Answer 1

在这里您将

spring.cloud.gateway.routes[0].uri=http://ORDER-SERVICE/

替换为

spring.cloud.gateway.routes[0].uri=lb://ORDER-SERVICE

参考

http://ip-address {cannot be a service name}/

希望有帮助。