Spring Boot 根据配置决定服务(集群、单机)是否使用某些主件的操作代码

server:
  name: VipSoft Server Dev
  port: 8193
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848     #注册中心地址(集群用,号分隔)
        cluster-name: DEFAULT              #可以通过集群名称区分不同的项目
        server-name: netty-service
        group-name: NETTY_GROUP

@Component
public class NettyServer {
    private static final Logger logger = LoggerFactory.getLogger(LoggerConfig.NETTY_LOGGER);
    @Value("${server.cloud.nacos.discovery.server-addr}")
    private String nacosServer;
    @Value("${server.cloud.nacos.discovery.server-name}")
    private String serviceName;
    @Value("${server.cloud.nacos.discovery.group-name}")
    private String groupName;
}
@Component
public class XXXService {
    @Autowired
    private NacosUtil nacosUtil;
}

server:
  name: Telemetry Cloud Server Dev
  port: 8193
  cloud:
    nacos:
      enabled: false  # 添加这个开关
      discovery:
        server-addr: 127.0.0.1:8848
        cluster-name: DEFAULT
        server-name: netty-service
        group-name: NETTY_GROUP

@Component
@ConditionalOnProperty(name = "server.cloud.nacos.enabled", havingValue = "true")
public class NettyServer {
    // 原有代码...
}
@Component
public class XXXService {
    // 允许依赖不存在
    @Autowired(required = false)
    private NacosUtil nacosUtil;
}

spring:
  profiles:
    active: standalone # 或 nacos

netty:
  mode: standalone # 或 cloud

@Configuration
public class NettyConfig {
    @Bean
    @ConditionalOnProperty(name = "netty.mode", havingValue = "cloud")
    public NettyServer nettyServer() {
        return new NettyServer();
    }
}

@ConfigurationProperties(prefix = "server.cloud.nacos.discovery")
public class NacosProperties {
    private boolean enabled;
    private String serverAddr;
    private String clusterName;
    private String serverName;
    private String groupName;
    // getters and setters
}

@Component
public class NettyServer {
    private final NacosProperties nacosProperties;
    public NettyServer(NacosProperties nacosProperties) {
        this.nacosProperties = nacosProperties;
        if(nacosProperties.isEnabled()) {
            // 初始化Nacos相关逻辑
        }
    }
}

server:
  cloud:
    nacos:
      enabled: false

@Component
@ConditionalOnProperty(name = "server.cloud.nacos.enabled", matchIfMissing = false)
public class NettyServer {
    // ...
}