Springboot整合GateWay+Nacos实现动态路由

spring:
  cloud:
	gateway:
	  routes:
	  - id: manager						# 路由唯一标识
		uri: lb://manager_server		# 路由指向目的地URL或服务名，客户端请求最终被转发到的微服务 									
		predicates:
		- Path=/manager/** 				# 断言：以manager开头的请求都负载到manager_server服务
		filters:
		- RewritePath=/manager/(?<segment>.*), /$\{segment} # 过滤器：过滤掉url里的manager,例如http://ip:port/manager/test -> http://ip:port/test
		order: 5						# 用于多个Route之间的排序，数值越小越靠前，匹配优先级越高

<properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <dubbo.version>3.2.0-beta.4</dubbo.version>
        <spring-boot.version>2.6.11</spring-boot.version>
    </properties>


    <dependencyManagement>
        <dependencies>
            <!-- Spring Boot -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!--springcloudalibaba-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2021.0.4.0</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!--nacos-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
                <version>2021.0.4.0</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>

        <!-- spring boot starter -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>


        <!--Nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
    </dependencies>

    <dependencies>
        <!--gateway-->
        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-gateway -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
            <version>3.1.2</version>
        </dependency>

        <!--Nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <!--客户端负载均衡loadbalancer-->
        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-loadbalancer -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
            <version>3.1.1</version>
        </dependency>
    </dependencies>

server:
  port: 9002 
spring:
  application:
    name: SpringBoot-Nacos-Dubbo-provider #Nacos注册中心服务名称
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848 #Nacos注册中心地址

server:
  port: 8080

spring:
  application:
    name: gateway
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848 #注册到nacos中
    gateway:
      routes:
        - id: gateway1 #路由的ID，没有固定规则但要求唯一，建议配合服务名
          uri: http://localhost:9002 #匹配后提供服务的路由地址
          predicates:
            - Path=/provider/** # 断言，路径相匹配的进行路由

@RestController
@RequestMapping("/provider")
public class ProviderController {
    @Value("${server.port}")
    private String post;


    @GetMapping("/getpost")
    public String getPost(){
        return "当前端口："+post;
    }
}

server:
  port: 8080

spring:
  application:
    name: gateway
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848 #注册到nacos中
    gateway:
      discovery:
        locator:
          enabled: true #开启从注册中心动态创建路由的功能，利用微服务名进行路由
      routes:
        - id: gateway1 #路由的ID，没有固定规则但要求唯一，建议配合服务名
          uri: lb://SpringBoot-Nacos-Dubbo-provider #匹配后提供服务的名称 用于负载均衡
          predicates:
            - Path=/provider/** # 断言，路径相匹配的进行路由