SpringCloud 微服务集群升级记录（1.5.x-2.7.18）

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-properties-migrator</artifactId>
   <scope>runtime</scope>
</dependency>

spring:
   main:
     # Spring Boot 2.6以后 默认不允许循环依赖
   allow-circular-references: true
   	#允许bean覆盖
   	allow-bean-definition-overriding: true

corsConfiguration.setAllowCredentials(true);
corsConfiguration.addAllowedOriginPattern("*");

The use of configuration keys that have been renamed was found in the environment:

Property source 'ApolloBootstrapPropertySources':
	Key: spring.datasource.data
		Replacement: spring.sql.init.data-locations
	Key: spring.datasource.platform
		Replacement: spring.sql.init.platform
	Key: spring.datasource.schema
		Replacement: spring.sql.init.schema-locations

  sql:
    init:
      platform: mysql
      #执行的sql语句
      data-locations: classpath:data.sql
      #执行的建表语句
      schema-locations: classpath:schema.sql

instance-id: ${spring.cloud.client.ip-address}:${server.port}

metadata-map:
  user-name: ${spring.security.user.name}
  user-password: ${spring.security.user.password}

spring:
  servlet:
  #最大上传大小，MB
    multipart:
      max-file-size: 1000MB
      max-request-size: 1000MB

@Bean
public LoadBalancerClient blockingLoadBalancerClient(LoadBalancerClientFactory loadBalancerClientFactory) {
   return new BlockingLoadBalancerClient(loadBalancerClientFactory);
}

@Configuration
public class ZuulConfiguration {
    /**
     * The path returned by ErrorController.getErrorPath() with Spring Boot < 2.5
     * (and no longer available on Spring Boot >= 2.5).
     */
    private static final String ERROR_PATH = "/error";
    private static final String METHOD = "lookupHandler";

    /**
     * Constructs a new bean post-processor for Zuul.
     *
     * @param routeLocator    the route locator.
     * @param zuulController  the Zuul controller.
     * @param errorController the error controller.
     * @return the new bean post-processor.
     */
    @Bean
    public ZuulPostProcessor zuulPostProcessor(@Autowired RouteLocator routeLocator,
                                               @Autowired ZuulController zuulController,
                                               @Autowired(required = false) ErrorController errorController) {
        return new ZuulPostProcessor(routeLocator, zuulController, errorController);
    }

    private enum LookupHandlerCallbackFilter implements CallbackFilter {
        INSTANCE;

        @Override
        public int accept(Method method) {
            if (METHOD.equals(method.getName())) {
                return 0;
            }
            return 1;
        }
    }

    private enum LookupHandlerMethodInterceptor implements MethodInterceptor {
        INSTANCE;

        @Override
        public Object intercept(Object target, Method method, Object[] args, MethodProxy methodProxy) throws Throwable {
            if (ERROR_PATH.equals(args[0])) {
                // by entering this branch we avoid the ZuulHandlerMapping.lookupHandler method to trigger the
                // NoSuchMethodError
                return null;
            }
            return methodProxy.invokeSuper(target, args);
        }
    }

    private static final class ZuulPostProcessor implements BeanPostProcessor {

        private final RouteLocator routeLocator;
        private final ZuulController zuulController;
        private final boolean hasErrorController;

        ZuulPostProcessor(RouteLocator routeLocator, ZuulController zuulController, ErrorController errorController) {
            this.routeLocator = routeLocator;
            this.zuulController = zuulController;
            this.hasErrorController = (errorController != null);
        }

        @Override
        public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
            if (hasErrorController && (bean instanceof ZuulHandlerMapping)) {
                Enhancer enhancer = new Enhancer();
                enhancer.setSuperclass(ZuulHandlerMapping.class);
                enhancer.setCallbackFilter(LookupHandlerCallbackFilter.INSTANCE); // only for lookupHandler
                enhancer.setCallbacks(new Callback[] {LookupHandlerMethodInterceptor.INSTANCE, NoOp.INSTANCE});
                Constructor<?> ctor = ZuulHandlerMapping.class.getConstructors()[0];
                return enhancer.create(ctor.getParameterTypes(), new Object[] {routeLocator, zuulController});
            }
            return bean;
        }
    }
}

public class RibbonEurekaClientConfig {

    @Autowired
    private DiscoveryClient discoveryClient;

    @Bean
    @Lazy
    public IPing ribbonPing() {
        return new DummyPing();
    }

    @Bean
    @Lazy
    public IRule ribbonRule(IClientConfig clientConfig) {
        AvailabilityFilteringRule rule = new AvailabilityFilteringRule();
        rule.initWithNiwsConfig(clientConfig);
        return rule;
    }

    @Bean
    @Lazy
    public ServerList<?> ribbonServerList(IClientConfig clientConfig) {

        return new ServerList<Server>() {
            @Override
            public List<Server> getInitialListOfServers() {
                return new ArrayList<>();
            }

            @Override
            public List<Server> getUpdatedListOfServers() {
                List<Server> serverList = new ArrayList<>();
                List<ServiceInstance> instances = discoveryClient.getInstances(clientConfig.getClientName());
                if (instances != null && instances.size() == 0) {
                    return serverList;
                }
                for (ServiceInstance instance : instances) {
                    if (instance.isSecure()) {
                        serverList.add(new Server("https", instance.getHost(), instance.getPort()));
                    } else {
                        serverList.add(new Server("http", instance.getHost(), instance.getPort()));
                    }
                }
                return serverList;
            }
        };
    }

}