【spring cloud (二)】spring boot+spring cloud+nacos+gateway+ribbon负载均衡配置

1.新建gateway工程，pom文件引入配置

<!--gateway网关 -->
<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>


<!--服务发现、注册-->
<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>

<!--jwt-->
<dependency>
   <groupId>io.jsonwebtoken</groupId>
   <artifactId>jjwt</artifactId>
   <version>0.9.0</version>
</dependency>


<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
<dependency>
   <groupId>org.slf4j</groupId>
   <artifactId>slf4j-api</artifactId>
   <version>1.7.26</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
<dependency>
   <groupId>org.slf4j</groupId>
   <artifactId>slf4j-simple</artifactId>
   <version>1.7.26</version>
   <scope>test</scope>
</dependency>
 
<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</dependency>

2.配置文件 application.yml

server:
  port: 9527
spring:
  application:
    name: service-getway
  cloud:
    gateway:
      discovery:
        locator:
          enabled: true # 开启从注册中心动态创建路由的功能，利用微服务名称j进行路由
      routes:
        - id: routep #路由的id
          uri: lb://jk-nacos-provider  #服务名称
          predicates:
            - Path=/person/**
    nacos:
      discovery:
        server-addr: nacos-server-02:8848,nacos-server-03:8848
        namespace: b3845fc3-ceea-4a96-bd4f-c7a7541f0485
#自定义负载均衡册罗 默认轮询 设置为随机
#      jk-nacos-provider   服务名称
jk-nacos-provider:
  ribbon:
    listOfServers: localhost:8083, localhost:8081
    NFLoadBalancerRuleClassName: com.netflix.loadbalancer.RandomRule

3.启动类添加 @EnableDiscoveryClient 注解，注解到nacos服务中
4.新建一个服务提供者工程，一个简单的能对外提供服务的spring boot工程就可以。配置文件：

spring:
  application:
    name: jk-nacos-provider
  cloud:
    nacos:
      discovery:
        server-addr: nacos-server-02:8848,nacos-server-03:8848
        namespace: b3845fc3-ceea-4a96-bd4f-c7a7541f0485
server:
  port: 8081

5.启动类添加注解：@EnableDiscoveryClient，注册到服务中心

6.新建一个controller类对外提供服务

7.在idea中启动两个服务，端口分别是8081和8083

8.访问网关gateway路径，进行测试：http://localhost:9527/person/getPerson/test，随机访问到了不同端口提供的服务