SpringAlibaba 2021.0.1.0整合LoadBalancer和openFeign

最新推荐文章于 2025-04-17 11:42:57 发布

江州子

最新推荐文章于 2025-04-17 11:42:57 发布

阅读量299

点赞数 1

分类专栏： springcloud 文章标签： java spring springcloud

本文链接：https://blog.youkuaiyun.com/jiangguochen2/article/details/130856472

版权

springcloud 专栏收录该内容

1 篇文章

订阅专栏

该文章详细介绍了如何在SpringBoot应用中集成Alibaba的Nacos配置中心和发现服务，以及SpringCloud的OpenFeign和LoadBalancer组件，用于实现服务间的调用和负载均衡。配置包括引入依赖、添加注解、配置类以及服务接口定义。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

SpringAlibaba 2021.0.1.0整合LoadBalancer和openFeign

先引入相关依赖

<properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <scaVersion>2021.0.1.0</scaVersion>
        <springCloudVersion>2021.0.1</springCloudVersion>
        <openFeignVersion>3.1.1</openFeignVersion>
        <loadbalancerVersion>3.1.1</loadbalancerVersion>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.6.8</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <version>2.6.8</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
            <version>${scaVersion}</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <version>${scaVersion}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
            <version>${openFeignVersion}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
            <version>${loadbalancerVersion}</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.22</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.13.3</version>
        </dependency>
	<!-- ribbon 不建议使用
	  <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
         <version>3.1.1</version>
     </dependency>-->
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.6.8</version>
                <configuration>
                    <mainClass>com.iflytek.zhcs.ggaq.dsjyy.NacosClientMain</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.2.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.iflytek.zhcs.ggaq.dsjyy.NacosClientMain</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-plugin-plugin</artifactId>
                <version>3.6.2</version>
                <configuration>
                    <!-- 或者在mojo类的注释上添加一个descriptor -->
                    <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
                </configuration>
            </plugin>

        </plugins>
        <resources>
            <resource>
                <directory>src/main/java</directory>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
    </build>

客户端开启注解

@EnableFeignClients
@EnableDiscoveryClient
@LoadBalancerClients(@LoadBalancerClient(value = "file",configuration = CustomLoadBalancerConfiguration.class))
@SpringBootApplication
public class NacosClientMain {
    public static void main(String[] args) {
    SpringApplication.run(NacosClientMain.class,args );
    }
}

添加loadBalancer配置类

@Configuration
public class CustomLoadBalancerConfiguration {
    @Bean
    public ReactorLoadBalancer<ServiceInstance> roundRobinLoadBalancer(Environment environment, LoadBalancerClientFactory loadBalancerClientFactory) {
        String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);

        return new RoundRobinLoadBalancer(loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class), name);
    }
}

配置文件开启loadbalancer

spring.application.name=nacos-client
server.port=1237
spring.cloud.nacos.discovery.server-addr=192.168.0.61:8848
spring.cloud.nacos.config.server-addr=192.168.0.61:8848
spring.cloud.nacos.discovery.enabled=true
spring.cloud.loadbalancer.nacos.enabled=true

服务调用

@FeignClient(name = "file",path = "/file")
public interface FileService {
    @GetMapping("/testService/getFileName")
    String getFile();
}