博客

springcloud+nacos(服务注册发现)+FeignClient完成服务调用

本文介绍的是window版本应用

nacos最新稳定版下载:https://github.com/alibaba/nacos/releases

***nacos下载版本默认启动方式为集群模式;

我们这里只需要单机启动 所以启动方式:

1.cmd窗口执行: startup.cmd -m standalone

2.修改startup.cmd文件中启动模式为standalone后,双击启动

见到以下图示证明启动成功:



页面访问地址: http://localhost:8848/nacos

代码实例:

新建第一个springboot工程(略过)

版本要一致:https://github.com/spring-cloud-incubator/spring-cloud-alibaba/wiki/版本说明

maven:

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.wn</groupId>
    <artifactId>nacosserver</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <name>app2</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
        <nacos.version>2021.1</nacos.version>
        <spring-cloud.version>2020.0.2</spring-cloud.version>
    </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>
            <version>${nacos.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-loadbalancer</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
    </dependencies>

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

配置文件:

FeignClient类:

@FeignClient(value = "consumer")
@Component
public interface FeignClientInterface {


    @GetMapping(value = "/app2/api/visit2")
    String doNacos();
}

再建一个一模一样的第二个工程:

连个服务启动后会在nacos中 注册进来:

最后就可以相互间调用接口访问了!!!