springcloud - alibaba - 2 - 集成Feign - 更新完成

1、依赖

• 依赖管理

<parent>
        <artifactId>spring-boot-parent</artifactId>
        <groupId>org.springframework.boot</groupId>
        <version>2.3.12.RELEASE</version>
        <relativePath/>
    </parent>

• 项目需要的依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>

<!--        springcloud-alibaba需要的依赖-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR12</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.2.6.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

2、服务提供者

2.1）、yml配置

server:
  port: 8011

spring:
  application:
    name: ALIBABA-PUBLISHER
  cloud:
    nacos:
      discovery:
        server-addr: 162.14.66.60:8848  # 自己的服务器ip：8848

management:
  endpoints:
    web:
      exposure:
        include: "*" #健康检查

2.2）、启动类编写

package cn.zixieqing;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

/**
 * @ClassName PublisherApplication
 * @Author ZiXieQing
 * @Date 2021/12/7
 * Version 1.0
 **/

@SpringBootApplication
@EnableDiscoveryClient      // 开启nacos的客户端功能
public class PublisherApplication {

    public static void main(String[] args) {

        SpringApplication.run(PublisherApplication.class, args);
    }
}

2.3）、controller编写

package cn.zixieqing.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/provider")
public class ProvideService {

    @GetMapping("/service")
    public String provideService() {

        return "this is my son";
    }
}

3、Feign

3.1）、导入依赖

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

3.2）、编写yml

server:
  port: 8012

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 162.14.66.60:8848  # 自己的服务器ip：8848

  application:
    name: ALIBABA-OPENFEIGN

3.3）、接口编写

package cn.zixieqing;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@FeignClient(value = "ALIBABA-PUBLISHER")  // publisher中注册进去的服务名
public interface ProxyService {

    @RequestMapping(value = "/provider/service" , method = RequestMethod.GET)
    String provideService();

}

3.4）、启动类编写

package cn.zixieqing;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class OpenFeignApplication {

    public static void main(String[] args) {

        SpringApplication.run(OpenFeignApplication.class, args);
    }
}

3.5）、服务消费层编写

package cn.zixieqing.controller;

import cn.zixieqing.ProxyService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @ClassName getService
 * @Author ZiXieQing
 * @Date 2021/12/7
 * Version 1.0
 **/

@RestController
@RequestMapping("/test")
public class getService {

    @Autowired
    private ProxyService proxyService;

    @GetMapping("/getService")
    public String getServer() {

        return proxyService.provideService();

    }
}

4、启动publisher 和 Feign