Problems encountered when the registry service Eureka switches to nocas

springBoot edition 2.3.7.RELEASE

springCloudAlibab edition 2.2.2.RELEASE

springClould edition  Hoxton.RELEASE

    <!-- spring edition  -->        
     <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.7.RELEASE</version>
        <relativePath/> 
      </parent>        


         <!-- Alibaba Nacos  To configure  -->
            <dependency>
                <groupId>com.alibaba.nacos</groupId>
                <artifactId>nacos-client</artifactId>
                <version>${nacos.version}</version>
            </dependency>

            <!-- Spring Cloud Alibaba  Version Manager  -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-loadbalancer</artifactId>
        </dependency>

         <nacos.version>2.0.3</nacos.version>
        <spring-cloud-alibaba.version>2.2.2.RELEASE</spring-cloud-alibaba.version>
        <spring-cloud.version>Hoxton.RELEASE</spring-cloud.version>

Sub service

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>

Delete eureka,config

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>

Packet collision hystrix,ribbon

       <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
        </dependency>

problem ：

Initiate error reporting

Description: Field autoServiceRegistration in org.springframework.cloud.client.serviceregistry.AutoServiceRegistrationAutoConfiguration required a single bean, but 2 were found: - nacosAutoServiceRegistration: defined by method 'nacosAutoServiceRegistration'in class path resource [com/alibaba/cloud/nacos/registry/NacosServiceRegistryAutoConfiguration.class] - consulAutoServiceRegistration: defined by method 'consulAutoServiceRegistration'in class path resource [org/springframework/cloud/consul/serviceregistry/ConsulAutoServiceRegistrationAutoConfiguration.class] Action: Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed

The above error message shows the auto configuration class AutoServiceRegistrationAutoConfiguration Inject autoServiceRegistration Property, there are two injectable instances at the same time bean, One is NacosAutoServiceRegistration Class bean, The other is ConsulAutoServiceRegistration Class bean. It's used here NacosAutoServiceRegistration Example bean, So we need to exclude spring-cloud-starter-consul-discovery Dependent spring-cloud-consul-discovery rely on ：

   <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-discovery</artifactId>
            <version>2.2.0.RELEASE</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-consul-discovery</artifactId>
                </exclusion>
            </exclusions>
     </dependency>

Initiate error reporting

[com.alibaba.nacos.client.remote.worker] ERROR c.a.n.c.remote.client.grpc.GrpcClient - Server check fail, please check server nacos.shands.com ,port 1884 is available , error ={} java.util.concurrent.ExecutionException: com.alibaba.nacos.shaded.io.grpc.StatusRuntimeException: UNAVAILABLE: io exception

The configuration file is 8848 But the report is wrong 1884, I have checked many schemes , Some ports are not open , There are some address errors ,

What I encounter here is version conflict , See the beginning of the specific version

spring Errors caused by version upgrade AddFromTemplate

        @Override
        public Collection<String> setTemplateParameter(String name,
                                                       Collection<String> rest) {
            return addTemplatedParam(rest, name);
            //return addTemplateParameter(rest, name);
        }

After the change

 @Override
        public Collection<String> setTemplateParameter(String name, Collection<String> rest) {
            if (rest == null) {
                rest = new ArrayList();
            }
            ((Collection)rest).add(String.format("{%s}", name));
            return (Collection)rest;
        }

Before change

// KB,MB
        factory.setMaxFileSize(maxFileSize);
        ///  Total upload data size 
        factory.setMaxRequestSize(maxRequestSize);

After the change

// KB,MB
        factory.setMaxFileSize(DataSize.parse(maxFileSize));
        ///  Total upload data size 
        factory.setMaxRequestSize(DataSize.parse(maxRequestSize));