# 單機(jī)模式啟動(dòng)（默認(rèn)端口8848）
sh nacos/bin/startup.sh -m standalone

# 訪問(wèn)控制臺(tái)
http://localhost:8848/nacos
默認(rèn)賬號(hào)：nacos/nacos

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    <version>2021.0.5.0</version>
</dependency>

<!-- Spring Cloud 版本管理 -->
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>2021.0.5.0</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

spring:
  application:
    name: order-service  # 服務(wù)名稱（Nacos按此名稱分組）
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848  # Nacos地址
        namespace: dev  # 命名空間ID（非名稱）
        group: PROD_GROUP  # 自定義分組
        ephemeral: false  # 是否臨時(shí)實(shí)例（默認(rèn)為true）
        # 高級(jí)配置
        metadata: 
          version: v1.0
          region: hangzhou

@SpringBootApplication
@EnableDiscoveryClient  // 關(guān)鍵注解
public class OrderServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(OrderServiceApplication.class, args);
    }
}

spring:
  cloud:
    nacos:
      discovery:
        # 心跳間隔（單位ms，默認(rèn)5000）
        heart-beat-interval: 3000
        # 心跳超時(shí)（單位ms，默認(rèn)15000）
        heart-beat-timeout: 10000
        # 實(shí)例過(guò)期時(shí)間（單位秒，默認(rèn)90）
        instance-expire-seconds: 30

spring:
  cloud:
    nacos:
      discovery:
        # 實(shí)例權(quán)重（0-1，默認(rèn)1）
        weight: 0.8
        # 集群保護(hù)閾值（0-1，默認(rèn)0）
        protection-threshold: 0.5

spring:
  cloud:
    nacos:
      discovery:
        # 指定注冊(cè)IP（Docker環(huán)境常用）
        ip: 192.168.1.100
        # 指定IP類型
        ip-type: IPv4

2023-10-01 12:00:00 INFO  o.s.c.a.n.registry.NacosServiceRegistry  : nacos registry, order-service 192.168.1.100:8080 register finished

spring:
  cloud:
    nacos:
      discovery:
        # 使用完整URL格式
        server-addr: http://nacos.example.com:8848

// 添加JVM參數(shù)指定Nacos地址
-Dspring.cloud.nacos.discovery.server-addr=127.0.0.1:8848

<!-- Spring Cloud Alibaba Nacos Config -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
    <version>2022.0.0.0</version>
</dependency>

<!-- Spring Cloud Gateway -->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>

redis:
  host: 127.0.0.1
  port: 6379

spring:
  application:
    name: service-order
  cloud:
    nacos:
      config:
        server-addr: localhost:8848
        file-extension: yaml
        namespace: dev  # 可選，指定命名空間

@RestController
@RefreshScope
public class ConfigController {
    @Value("${redis.host}")
    private String redisHost;

    @GetMapping("/redis-host")
    public String getRedisHost() {
        return redisHost;
    }
}

redis:
  host: 192.168.1.100
  port: 6379
  password: 123456

spring:
  cloud:
    nacos:
      config:
        shared-configs:
          - data-id: common-redis.yaml
            refresh: true  # 開啟動(dòng)態(tài)刷新

routes:
  - id: user-service
    uri: lb://service-user  # 負(fù)載均衡到用戶服務(wù)
    predicates:
      - Path=/user/**
    filters:
      - StripPrefix=1

@Component
public class NacosRouteDefinitionRepository implements RouteDefinitionRepository {
    @Autowired
    private NacosConfigManager nacosConfigManager;

    @Override
    public Flux<RouteDefinition> getRouteDefinitions() {
        String config = nacosConfigManager.getConfigService()
                .getConfig("gateway-routes.yaml", "DEFAULT_GROUP", 5000);
        List<RouteDefinition> routes = JSON.parseArray(config, RouteDefinition.class);
        return Flux.fromIterable(routes);
    }

    // 監(jiān)聽配置變化
    @PostConstruct
    public void init() {
        nacosConfigManager.getConfigService().addListener(
                "gateway-routes.yaml", "DEFAULT_GROUP",
                new AbstractListener() {
                    @Override
                    public void receiveConfigInfo(String configInfo) {
                        // 觸發(fā)路由刷新
                        ApplicationEventPublisher.publishEvent(new RefreshRoutesEvent(this));
                    }
                });
    }
}