Nacos服务注册和配置中心

945 阅读4分钟

Nacos服务注册和配置中心

1、官方文档

nacos官网文档介绍:官方文档介绍

2、快速入门

Nacos Server安装

  • 环境准备
    Nacos是依赖java环境来运行的
  • docker拉取镜像并创建Nacos容器
// 拉取镜像
$ docker pull nacos/nacos-server:1.4.0

// 创建容器 指定启动方式--env MODE=standalone(单机模式)、端口映射
$ docker run --name nacos --env MODE=standalone -d -p 8848:8848 nacos/nacos-server

//查看容器信息
$ docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
828b242c0680 nacos/nacos-server:1.4.0 "bin/docker-startup.…" 23 hours ago Up 6 hours 0.0.0.0:8848->8848/tcp nacos
76fdef861ec8 mysql:latest "docker-entrypoint.s…" 2 days ago Up 6 hours 33060/tcp, 0.0.0.0:3307->3306/tcp mysql

//进入nacos容器交互界面 可以修改配置文件
$ docker exec -it 828b242c0680 /bin/bash

访问http://localhost:8848/nacos,测试是否启动成功。默认用户名及密码:nacos nacos

image.png

配置数据库

  • 创建数据库
create database nacos;

执行sql文件,sql源文件地址

image.png

  • 修改Nacos配置
# 进入nacos

docker exec -it nacos bash

# 修改配置文件

vim conf/application.properties

# 重启nacos

docker restart nacos

修改结果如下:

# spring
server.servlet.contextPath=${SERVER_SERVLET_CONTEXTPATH:/nacos}
server.contextPath=/nacos
server.port=${NACOS_APPLICATION_PORT:8848}
spring.datasource.platform=${SPRING_DATASOURCE_PLATFORM:""}
nacos.cmdb.dumpTaskInterval=3600
nacos.cmdb.eventTaskInterval=10
nacos.cmdb.labelTaskInterval=300
nacos.cmdb.loadDataAtStart=false
db.num=${MYSQL_DATABASE_NUM:1}
db.url.0=jdbc:mysql://${MYSQL_SERVICE_HOST}:${MYSQL_SERVICE_PORT:3306}/${MYSQL_SERVICE_DB_NAME}?${MYSQL_SERVICE_DB_PARAM:characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true}
db.url.1=jdbc:mysql://${MYSQL_SERVICE_HOST}:${MYSQL_SERVICE_PORT:3306}/${MYSQL_SERVICE_DB_NAME}?${MYSQL_SERVICE_DB_PARAM:characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true}
db.user=${MYSQL_SERVICE_USER}
db.password=${MYSQL_SERVICE_PASSWORD}
### The auth system to use, currently only 'nacos' is supported:
nacos.core.auth.system.type=${NACOS_AUTH_SYSTEM_TYPE:nacos}


### The token expiration in seconds:
nacos.core.auth.default.token.expire.seconds=${NACOS_AUTH_TOKEN_EXPIRE_SECONDS:

注意:连接的数据库用户需要host为%

集成配置中心

添加依赖

目前推荐使用版本为:官方版本说明

image.png


<?xml version="1.0" encoding="UTF-8"?>
<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>

    <!-- 项目坐标地址 -->
    <groupId>com.demo</groupId>
    <!-- 项目模块名称 -->
    <artifactId>nacos</artifactId>
    <!-- 项目版本名称 快照版本SNAPSHOT、正式版本RELEASE -->
    <version>0.0.1-SNAPSHOT</version>

    <!--
        集中定义依赖组件版本号,但不引入,
        在子工程中用到声明的依赖时,可以不加依赖的版本号,
        这样可以统一管理工程中用到的依赖版本
     -->
     <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <!-- spring-boot-starter-parent 依赖 -->
        <spring-boot.version>2.3.2.RELEASE</spring-boot.version>
        <!-- Spring Cloud Hoxton.SR9 依赖 -->
        <spring-cloud.version>Hoxton.SR9</spring-cloud.version>
        <!-- spring cloud alibaba 依赖 -->
        <alibaba-cloud.version>2.2.6.RELEASE</alibaba-cloud.version>
    </properties>

    <!-- 项目依赖管理 父项目只是声明依赖,子项目需要写明需要的依赖(可以省略版本信息) -->
    <dependencyManagement>
        <dependencies>
            <!-- spring boot 依赖 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- spring cloud 依赖 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- spring cloud alibaba 依赖 -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${alibaba-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

配置中心测试数据库连接

  • 创建配置 在命名空间中创建对应空间,不创建默认使用public,为了做好dev prop test等环境区分用

image.png 在配置列表中创建配置

image.png

Nacos Config 使用 Data IDGroup 来确定配置。

下图显示 Data Idspringboot-nacos-demo,组使用默认组,并添加 yaml 格式的配置信息。

image.png

spring:
  #阿里巴巴druid数据源配置
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    sql-script-encoding: utf-8
    druid:
      driver-class-name: com.mysql.cj.jdbc.Driver
      username: erp_dev
      url: jdbc:mysql://172.28.188.103:3306/erp_finance?characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&serverTimezone=Asia/Shanghai
      password: localf%BiAiSYyWhS#PN8
      filter:
        config:
          enabled: true
      # 连接池的配置信息
      # 初始化时建立物理连接的个数
      initial-size: 3
      # 连接池最小连接数
      min-idle: 3
      # 连接池最大连接数
      max-active: 20
      # 获取连接时最大等待时间,单位毫秒
      max-wait: 60000
      # 申请连接的时候检测,如果空闲时间大于timeBetweenEvictionRunsMillis,执行validationQuery检测连接是否有效。
      test-while-idle: true
      # 既作为检测的间隔时间又作为testWhileIdel执行的依据
      time-between-connect-error-millis: 60000
      # 销毁线程时检测当前连接的最后活动时间和当前时间差大于该值时,关闭当前连接
      min-evictable-idle-time-millis: 30000
      # 用来检测连接是否有效的sql 必须是一个查询语句
      # mysql中为 select 'x'
      # oracle中为 select 1 from dual
      validationQuery: select 'x'
      # 申请连接时会执行validationQuery检测连接是否有效,开启会降低性能,默认为true
      test-on-borrow: false
      # 归还连接时会执行validationQuery检测连接是否有效,开启会降低性能,默认为true
      test-on-return: false
      # 是否缓存preparedStatement,mysql5.5+建议开启
      pool-prepared-statements: true
      # 当值大于0时poolPreparedStatements会自动修改为true
      max-pool-prepared-statement-per-connection-size: 20
      # 合并多个DruidDataSource的监控数据
      use-global-data-source-stat: false
      # 配置扩展插件
      #监控统计拦截的filters
      filters: stat,wall,slf4j
      # 通过connectProperties属性来打开mergeSql功能;慢SQL记录
      connect-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
      # 定时输出统计信息到日志中,并每次输出日志会导致清零(reset)连接池相关的计数器。
      time-between-log-stats-millis: 300000
      # 配置DruidStatFilter
      web-stat-filter:
        enabled: true
        url-pattern: '/*'
        exclusions: '*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*'
      # 配置DruidStatViewServlet
      stat-view-servlet:
        # 是否启用StatViewServlet(监控页面)默认值为false(考虑到安全问题默认并未启动,如需启用建议设置密码或白名单以保障安全)
        enabled: true
        url-pattern: '/druid/*'
        # IP白名单(没有配置或者为空,则允许所有访问)
        allow: 127.0.0.1,192.168.0.1
        # IP黑名单 (存在共同时,deny优先于allow)
        deny: 192.168.0.128
        # 禁用HTML页面上的“Reset All”功能
        reset-enable: false
        # 登录名
        login-username: admin
        # 登录密码
        login-password: admin
  • 创建项目 在父工程下创建子项目【nacos_config_test】
  • 添加依赖
<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>nacos_config_test</artifactId>
    <parent>
        <artifactId>nacos</artifactId>
        <groupId>com.demo</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- nacos-config 依赖-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

</project>
  • 配置文件 在 bootstrap.yml 中配置 Nacos Server 的地址和应用名
spring:
  cloud:
    nacos:
      config:
        group: DEFAULT_GROUP # 组,默认为 DEFAULT_GROUP
        server-addr: 127.0.0.1:8848 # Nacos Server 地址
        enabled: true # 如果不想使用 Nacos 进行配置管理,设置为 false 即可
        file-extension: yml # 配置的文件类型 默认为properties
        prefix: springboot-nacos-demo # 前缀 不配置默认取spring.application.name
        namespace: 1407edc1-461a-4ee1-86b8-386065dbaf69 #命名空间

在 Nacos Spring Cloud 中,dataId 的完整格式如下:

${prefix}-${spring.profile.active}.${file-extension}
  • prefix 默认为 spring.application.name 的值,也可以通过配置项 spring.cloud.nacos.config.prefix来配置。
  • spring.profile.active 即为当前环境对应的 profile。注意:当 spring.profile.active 为空时,对应的连接符 - 也将不存在,dataId 的拼接格式将变成 ${prefix}.${file-extension}
  • file-exetension 为配置内容的数据格式,可以通过配置项 spring.cloud.nacos.config.file-extension 来配置。目前只支持 propertiesyaml 类型,默认为 properties

  • 自定义DruidDatasouceWrapper DruidDatasouceWrapper要继承DruidDataSource

RefreshScope的作用是实现配置、实例热加载,也就是我们重写修改配置信息后,spring会销毁当前类的实例,然后重新创建一个新的实例放到容器中,也是实现数据源配置实时更新的关键

package com.demo.nacos_config_test.wrapper;

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.context.annotation.Configuration;

/**
 * @ClassName DruidDataSourceWrapper
 * @Description TODO
 * @Author hanhang
 * @Date 2021/7/17 10:23 上午
 **/
@Configuration
@RefreshScope
public class DruidDataSourceWrapper extends DruidDataSource implements InitializingBean {
    @Value("${spring.datasource.druid.url}")
    private String url;
    @Value("${spring.datasource.druid.username}")
    private String username;
    @Value("${spring.datasource.druid.password}")
    private String password;
    @Value("${spring.datasource.druid.driver-class-name}")
    private String driverClassName;

    private String passwordCallbackClassName;

    public void setMaxWait(int maxWait) {
        this.maxWait = maxWait;
    }

    @Override
    public void setTimeBetweenEvictionRunsMillis(long timeBetweenEvictionRunsMillis) {
        this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
    }

    @Override
    public void setMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis) {
        this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
    }

    @Override
    public void setUrl(String url) {
        this.url = url;
    }

    @Override
    public void setDriverClassName(String driverClassName) {
        this.driverClassName = driverClassName;
    }

    @Override
    public void setPasswordCallbackClassName(String passwordCallbackClassName) {
        this.passwordCallbackClassName = passwordCallbackClassName;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        // 如果未找到前缀“spring.datasource.druid”JDBC属性,将使用“Spring.DataSource”前缀JDBC属性。
        super.setUrl(url);
        super.setUsername(username);
        super.setPassword(password);
        super.setDriverClassName(driverClassName);
        super.setInitialSize(initialSize);
        super.setMinIdle(minIdle);
        super.setMaxActive(maxActive);
        super.setMaxWait(maxWait);
        super.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        super.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        super.setValidationQuery(validationQuery);
        super.setTestWhileIdle(testWhileIdle);
        super.setTestOnBorrow(testOnBorrow);
        super.setTestOnReturn(testOnReturn);
        super.setPoolPreparedStatements(poolPreparedStatements);
        super.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
        super.setDbType(dbType);
        super.setPasswordCallbackClassName(passwordCallbackClassName);
    }
}
  • 配置Nacos 这里关键的配置就一个,EnableAutoConfiguration启动springboot的自动自动配置,下面的方法是在初始化的时候,创建数据源实例,同样也启用了热加载
package com.demo.nacos_config_test.conf;

import com.alibaba.druid.pool.DruidDataSource;
import com.demo.nacos_config_test.wrapper.DruidDataSourceWrapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @ClassName NacosConfigConfiguration
 * @Description TODO
 * @Author hanhang
 * @Date 2021/7/17 10:28 上午
 **/
@Slf4j
@EnableAutoConfiguration
@Configuration
public class NacosConfigConfiguration {

    @Bean(initMethod = "init")
    @ConditionalOnMissingBean
    @RefreshScope
    public DruidDataSource dataSource(){
        log.info("Init DruidDataSource");
        return new DruidDataSourceWrapper();
    }
}
  • 测试 如下日志信息,我们可以看到springboot启动的时候加载了nacos发布的配置信息,然后还会有数据源初始成功的提示信息:

image.png 然后我们写一个controller测试下:

package com.demo.nacos_config_test.controller;

import com.alibaba.druid.pool.DruidPooledConnection;
import com.demo.nacos_config_test.wrapper.DruidDataSourceWrapper;
import lombok.RequiredArgsConstructor;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

/**
 * @ClassName NacosConfigController
 * @Description TODO
 * @Author hanhang
 * @Date 2021/7/15 4:00 下午
 **/
@RestController
@RequestMapping("/nacos")
@RequiredArgsConstructor
public class NacosConfigController {
    private final DruidDataSourceWrapper dataSourceWrapper;

    @GetMapping("/get")
    @ResponseBody
    public List<String> get() throws SQLException {
        DruidPooledConnection connection = dataSourceWrapper.getConnection();
        Statement statement = connection.createStatement();
        ResultSet resultSet = statement.executeQuery("SELECT * from base_other_platform_payment;");
        List<String> sup = new ArrayList<>();
        while(resultSet.next()){
            if (!sup.contains(resultSet.getString("supplier_name"))){
                sup.add(resultSet.getString("supplier_name"));
            }
        }
        return sup;
    }
}

有两个数据库,都有base_other_platform_payment表,我现在的数据库地址配的是172.28.188.103:3306/erp_financese这个库,请求结果如下:

切换至127.0.0.1:3306/erp_financese这个库,请求结果如下:

测试配置中心热部署数据库完成。

服务注册与发现

使用两个maven项目来测试注册中心的功能,一个项目提供服务叫nacos-discovery-test项目,另一个项目则转发该服务并具有断路器功能,叫nacos-consumer-test,将两个项目注册到Nacos注册中心。

服务提供者

  • 创建项目

在父工程下创建子项目【nacos_discovery_test】

  • 添加依赖
<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>nacos_discovery_test</artifactId>
    <parent>
        <artifactId>nacos</artifactId>
        <groupId>com.demo</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <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.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

</project>
  • 配置文件
# 应用名称
spring:
  application:
    name: nacos-discovery-test
  cloud:
    nacos:
      discovery:
        enabled: true
        server-addr: 127.0.0.1:8848
        namespace: 948d40f9-6dfb-45de-b62d-c8035423d2e8
server:
  port: 8762
  • 更多配置

主类上进行注解@EnableDiscoveryClient开启Spring Cloud的服务注册与发现

package com.demo.nacos_discovery_test;

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

/**
 * @author hanhang
 */
@EnableDiscoveryClient
@SpringBootApplication
public class NacosDiscoveryTestApplication {

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

}

创建测试接口

package com.demo.nacos_discovery_test.controller;

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

/**
 * @ClassName HelloController
 * @Description TODO
 * @Author hanhang
 * @Date 2021/7/19 9:48 上午
 **/
@RestController
public class HelloController {

    @GetMapping(value = "/hello")
    public String hello() {
        return "Hello , I am provider";
    }
}

观察日志,发现下图所示,即添加成功

  • 测试

调用http://localhost:8762/hello返回结果

服务消费者

  • 创建项目

在父工程下创建子项目【nacos_consumer_test】

  • 添加依赖
<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>nacos_consumer_test</artifactId>
    <parent>
        <artifactId>nacos</artifactId>
        <groupId>com.demo</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <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-openfeign-core</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

</project>
  • 配置文件
# 应用名称
spring:
  application:
    name: nacos-consumer-test
  cloud:
    nacos:
      discovery:
        enabled: true
        server-addr: 127.0.0.1:8848
        namespace: 948d40f9-6dfb-45de-b62d-c8035423d2e8
server:
  port: 8763
feign:
  hystrix:
    enabled: true #开启熔断
  • 更多配置

主类上进行注解@EnableDiscoveryClient开启Spring Cloud的服务注册与发现,添加

@EnableFeignClients开启Feign

package com.demo.nacos_consumer_test;

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

@EnableDiscoveryClient
@SpringBootApplication
@EnableFeignClients
public class NacosConsumerTestApplication {

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

}

Remote接口程序实现转发和转发失败时的回调功能

package com.demo.nacos_consumer_test.client;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;

/**
 * 注:feign不识别【_】识别【-】
 * @author hanhang
 */
@FeignClient(name = "nacos-discovery-test",fallback = RemoteHystrix.class)
public interface RemoteClient {
    @GetMapping("/hello")
    String helloNacos();
}

RemoteHystrix程序实现Remote接口,定义回调方法

package com.demo.nacos_consumer_test.client;

import org.springframework.stereotype.Component;

/**
 * @ClassName RemoteHystrix
 * @Description TODO
 * @Author hanhang
 * @Date 2021/7/19 10:12 上午
 **/
@Component
public class RemoteHystrix implements RemoteClient {
    @Override
    public String helloNacos() {
        return "请求超时了";
    }
}

创建测试接口

package com.demo.nacos_consumer_test.controller;

import com.demo.nacos_consumer_test.client.RemoteClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


/**
 * @ClassName FeignTestController
 * @Description TODO
 * @Author hanhang
 * @Date 2021/7/19 10:16 上午
 **/
@RestController
public class FeignTestController {
    @Autowired
    private RemoteClient remoteClient;

    @GetMapping("/feign")
    public String getTest(){
        return remoteClient.helloNacos();
    }
}

观察日志,发现下图所示,即添加成功

  • 测试

调用http://localhost:8763/feign返回结果