我有一个带有 Spring Boot 的简单微服务应用程序,我尝试添加 Spring Cloud Gateway 服务,但它不起作用。所有微服务,包括 Eureka 服务器,都运行良好,但是当我尝试使用网关路由访问某些微服务时,它找不到该微服务。
ApiGateway pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.futurex.microservices</groupId>
<artifactId>APIGateway</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>APIGateway</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>2020.0.3</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
API网关应用程序.yml
spring:
application:
name: API-GATEWAY
cloud:
gateway:
routes:
- id: FX-SERVICE1
uri: http://localhost:8005
predicates:
- Path=/fx-service1/**
- id: FX-SERVICE2
uri: http://localhost:8006
predicates:
- Path=/fx-service2/**
discovery:
enabled: true
config:
uri: http://localhost:8081
server:
port: 8081
eureka:
client:
service-url:
defaultZone: http://localhost:8761/eureka/
register-with-eureka: true
fetch-registry: true
instance:
hostname: localhost
API网关主
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@SpringBootApplication
@EnableEurekaClient
public class ApiGatewayApplication {
public static void main(String[] args) {
SpringApplication.run(ApiGatewayApplication.class, args);
}
}
有时会发生服务名称问题在edge-service上添加此属性:
对于 application.properties 文件:
spring.cloud.gateway.discovery.locator.enabled=true
spring.cloud.gateway.discovery.locator.lower-case-service-id=true
对于 application.yml 文件:
spring:
cloud:
gateway:
discovery:
locator:
enabled: true
lowerCaseServiceId: true
我主要做了两件事,这对我有用。
所有服务名称都必须大写,例如
uri:lb://大写名称
当您指定 URI 时,它必须以斜杠“/”结尾
uri:lb://大写名称/
通过路由 id 仅指定一个路径谓词我不知道为什么,但它的工作原理是这样的
如果它可以帮助某人尝试此配置。在 application.properties 中:
spring.application.name=service-gateway-server
server.port=8090
eureka.client.service-url.defaultZone=http://localhost:8761/eureka
我在 application.yml 中显示了我的其余配置:
spring:
cloud:
gateway:
routes:
- id: service-one
uri: lb://service-one
predicates:
- Path=/api/service1/**
filters:
- StripPrefix=2
- id: service-two
uri: lb://service-two
predicates:
- Path=/api/service2/**
filters:
- StripPrefix=2
就我而言,我最初使用依赖:
spring-cloud-starter-gateway-mvc
但是网关不起作用。
当我将其更改为:
spring-cloud-starter-gateway
成功了。