Feign服务注册到nacos 2.2.3

最新推荐文章于 2025-12-22 21:11:27 发布

原创最新推荐文章于 2025-12-22 21:11:27 发布 · 426 阅读

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CC 4.0 BY-SA版权

文章标签：

#nacos #注册中心 #feign #负载均衡 #微服务

文章目录

前言
一、父POM
二、服务端
三、客户端

前言

环境：
jdk1.8
spring boot：2.6.15
spring cloud：2021.0.9
spring cloud alibaba：2021.0.5.0
nacos server：2.2.3

一、父POM

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.test.demo</groupId>
  <artifactId>nacos-demo</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <name>nacos-demo</name>
  <url>http://maven.apache.org</url>
  <modules>
    <module>backend-service</module>
    <module>front-service</module>
  </modules>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-dependencies</artifactId>
        <version>2.6.15</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>2021.0.9</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <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>
</project>

二、服务端

1.POM

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.test.demo</groupId>
        <artifactId>nacos-demo</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>backend-service</artifactId>
    <packaging>jar</packaging>

    <name>backend-service</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
    </dependencies>
</project>

2. Java代码

启动类

@SpringBootApplication
@EnableDiscoveryClient
public class BackendApplication {

    public static void main(String[] args) {
        SpringApplication.run(BackendApplication.class);
    }
}

服务端代码，提供正常的rest风格的接口即可。

3. Yaml

server:
  port: 12221
spring:
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
  application:
    name: backend-service

三、客户端

1.POM

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.test.demo</groupId>
        <artifactId>nacos-demo</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>front-service</artifactId>
    <packaging>jar</packaging>

    <name>front-service</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
        </dependency>
    </dependencies>
</project>

2.Java代码

启动类

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class FrontApplication {

    public static void main(String[] args) {
        SpringApplication.run(FrontApplication.class);
    }
}

定义Feign客户端

@FeignClient(name="backend-service")  // 与服务名相同
public interface FeignTestClient {

    @GetMapping("/listUsers/")
    void listUsers();
}

入口

@RestController
@RequestMapping("/api")
public class FeignController {

    @Autowired
    private FeignTestClient feignTestClient;

    @GetMapping("/testListUsers")
    public void testListUsers() {
        feignTestClient.listUsers();
    }
}

3. Yaml

server:
  port: 12222
spring:
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
  application:
    name: front-service