Nacos 注册中心

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git clone https://github.com/alibaba/nacos.git
cd nacos/
mvn -Prelease-nacos -Dmaven.test.skip=true clean install -U  
ls -al distribution/target/

// change the $version to your actual path
cd distribution/target/nacos-server-$version/nacos/bin

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sh startup.sh -m standalone

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bash startup.sh -m standalone

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cmd startup.cmd

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sh shutdown.sh

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cmd shutdown.cmd

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<?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.example</groupId>
    <!-- 项目模块名称 -->
    <artifactId>nacos-demo</artifactId>
    <!-- 项目版本名称 快照版本SNAPSHOT、正式版本RELEASE -->
    <version>1.0-SNAPSHOT</version>

    <!-- 继承 spring-boot-starter-parent 依赖 -->
    <!-- 使用继承方式，实现复用，符合继承的都可以被使用 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.0.RELEASE</version>
    </parent>

    <!--
        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>
        <!-- Spring Cloud Hoxton.SR5 依赖 -->
        <spring-cloud.version>Hoxton.SR5</spring-cloud.version>
        <!-- spring cloud alibaba 依赖 -->
        <spring-cloud-alibaba.version>2.1.0.RELEASE</spring-cloud-alibaba.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 cloud 依赖 -->
            <dependency>
                <groupId>org.springframework.cloud</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>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

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

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<?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">
    
    <!-- 继承父依赖 -->
    <parent>
        <artifactId>nacos-demo</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>product-service</artifactId>

    <!-- 项目依赖 -->
    <dependencies>
        <!-- spring cloud alibaba nacos discovery 依赖 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <!-- spring boot web 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- lombok 依赖 -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>

        <!-- spring boot test 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

</project>

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server:
  port: 7070 # 端口

spring:
  application:
    name: product-service # 应用名称
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        enabled: true # 如果不想使用 Nacos 进行服务注册和发现，设置为 false 即可
        server-addr: 127.0.0.1:8848 # Nacos 服务器地址

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package com.example.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Product implements Serializable {

    private Integer id;
    private String productName;
    private Integer productNum;
    private Double productPrice;

}

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package com.example.service;

import com.example.pojo.Product;

import java.util.List;

/**
 * 商品服务
 */
public interface ProductService {

    /**
     * 查询商品列表
     *
     * @return
     */
    List<Product> selectProductList();

}

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package com.example.service.impl;

import com.example.pojo.Product;
import com.example.service.ProductService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;

/**
 * 商品服务
 */
@Slf4j
@Service
public class ProductServiceImpl implements ProductService {

    /**
     * 查询商品列表
     *
     * @return
     */
    @Override
    public List<Product> selectProductList() {
        log.info("商品服务查询商品信息...");
        return Arrays.asList(
                new Product(1, "华为手机", 1, 5800D),
                new Product(2, "联想笔记本", 1, 6888D),
                new Product(3, "小米平板", 5, 2020D)
        );
    }

}

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package com.example.controller;

import com.example.pojo.Product;
import com.example.service.ProductService;
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;

import java.util.List;

@RestController
@RequestMapping("/product")
public class ProductController {

    @Autowired
    private ProductService productService;

    /**
     * 查询商品列表
     *
     * @return
     */
    @GetMapping("/list")
    public List<Product> selectProductList() {
        return productService.selectProductList();
    }

}

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package com.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

// 开启 @EnableDiscoveryClient 注解，当前版本默认会开启该注解
//@EnableDiscoveryClient
@SpringBootApplication
public class ProductServiceApplication {

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

}

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<?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">

    <!-- 继承父依赖 -->
    <parent>
        <artifactId>nacos-demo</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>order-service</artifactId>

    <!-- 项目依赖 -->
    <dependencies>
        <!-- spring cloud alibaba nacos discovery 依赖 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <!-- spring boot web 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- lombok 依赖 -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>

        <!-- spring boot test 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>
    
</project>

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server:
  port: 9090 # 端口

spring:
  application:
    name: order-service # 应用名称
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        enabled: true # 如果不想使用 Nacos 进行服务注册和发现，设置为 false 即可
        server-addr: 127.0.0.1:8848 # Nacos 服务器地址

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package com.example.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Product implements Serializable {

    private Integer id;
    private String productName;
    private Integer productNum;
    private Double productPrice;

}

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package com.example.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;
import java.util.List;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Order implements Serializable {

    private Integer id;
    private String orderNo;
    private String orderAddress;
    private Double totalPrice;
    private List<Product> productList;

}

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package com.example.service;

import com.example.pojo.Order;

public interface OrderService {

    /**
     * 根据主键查询订单
     *
     * @param id
     * @return
     */
    Order selectOrderById(Integer id);

}

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package com.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

// 开启 @EnableDiscoveryClient 注解，当前版本默认会开启该注解
//@EnableDiscoveryClient
@SpringBootApplication
public class OrderServiceApplication {

    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }

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

}

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package com.example.service.impl;

import com.alibaba.fastjson.JSON;
import com.example.pojo.Order;
import com.example.pojo.Product;
import com.example.service.OrderService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@Slf4j
@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private DiscoveryClient discoveryClient;

    /**
     * 根据主键查询订单
     *
     * @param id
     * @return
     */
    @Override
    public Order selectOrderById(Integer id) {
        log.info("订单服务查询订单信息...");
        return new Order(id, "order-001", "中国", 22788D,
                selectProductListByDiscoveryClient());
    }

    private List<Product> selectProductListByDiscoveryClient() {
        StringBuffer sb = null;

        // 获取服务列表
        List<String> serviceIds = discoveryClient.getServices();
        if (CollectionUtils.isEmpty(serviceIds))
            return null;

        // 根据服务名称获取服务
        List<ServiceInstance> serviceInstances = discoveryClient.getInstances("product-service");
        if (CollectionUtils.isEmpty(serviceInstances))
            return null;

        // 构建远程服务调用地址
        ServiceInstance si = serviceInstances.get(0);
        sb = new StringBuffer();
        sb.append("http://" + si.getHost() + ":" + si.getPort() + "/product/list");
        log.info("订单服务调用商品服务...");
        log.info("从注册中心获取到的商品服务地址为：{}", sb.toString());

        // 远程调用服务
        // ResponseEntity: 封装了返回数据
        ResponseEntity<List<Product>> response = restTemplate.exchange(
                sb.toString(),
                HttpMethod.GET,
                null,
                new ParameterizedTypeReference<List<Product>>() {});
        log.info("商品信息查询结果为：{}", JSON.toJSONString(response.getBody()));
        return response.getBody();
    }

}

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package com.example.service.impl;

import com.alibaba.fastjson.JSON;
import com.example.pojo.Order;
import com.example.pojo.Product;
import com.example.service.OrderService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@Slf4j
@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private LoadBalancerClient loadBalancerClient; // Ribbon 负载均衡器

    /**
     * 根据主键查询订单
     *
     * @param id
     * @return
     */
    @Override
    public Order selectOrderById(Integer id) {
        log.info("订单服务查询订单信息...");
        return new Order(id, "order-001", "中国", 22788D,
                selectProductListByLoadBalancerClient());
    }

    private List<Product> selectProductListByLoadBalancerClient() {
        StringBuffer sb = null;

        // 根据服务名称获取服务
        ServiceInstance si = loadBalancerClient.choose("product-service");
        if (null == si)
            return null;

        sb = new StringBuffer();
        sb.append("http://" + si.getHost() + ":" + si.getPort() + "/product/list");
        log.info("订单服务调用商品服务...");
        log.info("从注册中心获取到的商品服务地址为：{}", sb.toString());

        // ResponseEntity: 封装了返回数据
        ResponseEntity<List<Product>> response = restTemplate.exchange(
                sb.toString(),
                HttpMethod.GET,
                null,
                new ParameterizedTypeReference<List<Product>>() {});
        log.info("商品信息查询结果为：{}", JSON.toJSONString(response.getBody()));
        return response.getBody();
    }

}

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package com.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@EnableDiscoveryClient
@SpringBootApplication
public class OrderServiceApplication {

    @Bean
    @LoadBalanced // 负载均衡注解
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }

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

}

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package com.example.service.impl;

import com.alibaba.fastjson.JSON;
import com.example.pojo.Order;
import com.example.pojo.Product;
import com.example.service.OrderService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@Slf4j
@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private RestTemplate restTemplate;

    /**
     * 根据主键查询订单
     *
     * @param id
     * @return
     */
    @Override
    public Order selectOrderById(Integer id) {
        log.info("订单服务查询订单信息...");
        return new Order(id, "order-001", "中国", 22788D,
                selectProductListByLoadBalancerAnnotation());
    }

    private List<Product> selectProductListByLoadBalancerAnnotation() {
        String url = "http://product-service/product/list";
        log.info("订单服务调用商品服务...");
        log.info("从注册中心获取到的商品服务地址为：{}", url);
        // ResponseEntity: 封装了返回数据
        ResponseEntity<List<Product>> response = restTemplate.exchange(
                url,
                HttpMethod.GET,
                null,
                new ParameterizedTypeReference<List<Product>>() {});
        log.info("商品信息查询结果为：{}", JSON.toJSONString(response.getBody()));
        return response.getBody();
    }

}

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package com.example.controller;

import com.example.pojo.Order;
import com.example.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/order")
public class OrderController {

    @Autowired
    private OrderService orderService;

    /**
     * 根据主键查询订单
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public Order selectOrderById(@PathVariable("id") Integer id) {
        return orderService.selectOrderById(id);
    }

}

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#*************** Config Module Related Configurations ***************#
### If user MySQL as datasource:
# 指定数据源为 MySQL
spring.datasource.platform=mysql

### Count of DB:
# 数据库实例数量
db.num=1

# 数据库连接信息，如果是 MySQL 8.0+ 版本需要添加 serverTimezone=Asia/Shanghai
### Connect URL of DB:
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&serverTimezone=Asia/Shanghai
db.user=root
db.password=1234

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spring:
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        enabled: true # 如果不想使用 Nacos 进行服务注册和发现，设置为 false 即可
        server-addr: 192.168.10.101:8848,192.168.10.102:8848,192.168.10.103:8848 # Nacos 服务器地址

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git clone https://github.com/alibaba/nacos.git
cd nacos/
mvn -Prelease-nacos -Dmaven.test.skip=true clean install -U  
ls -al distribution/target/

// change the $version to your actual path
cd distribution/target/nacos-server-$version/nacos/bin

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tar -zxvf nacos-server-1.2.1.tar.gz -C /usr/local/ # 解压文件至 local 目录

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192.168.10.101:8848
192.168.10.102:8848
192.168.10.103:8848

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#*************** Config Module Related Configurations ***************#
### If user MySQL as datasource:
# 指定数据源为 MySQL
spring.datasource.platform=mysql

### Count of DB:
# 数据库实例数量
db.num=1

# 数据库连接信息，如果是 MySQL 8.0+ 版本需要添加 serverTimezone=Asia/Shanghai
### Connect URL of DB:
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&serverTimezone=Asia/Shanghai
db.user=root
db.password=1234

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sh startup.sh

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tail -f /usr/local/nacos/logs/start.out

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2020-04-29 22:47:56,204 INFO Nacos is starting...

2020-04-29 22:47:56,556 INFO Nacos logs files: /usr/local/nacos/logs/

2020-04-29 22:47:56,556 INFO Nacos conf files: /usr/local/nacos/conf/

2020-04-29 22:47:56,556 INFO Nacos data files: /usr/local/nacos/data/

2020-04-29 22:47:56,556 INFO Nacos started successfully in cluster mode.

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sh shutdown.sh

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server:
  port: 7070 # 端口

spring:
  application:
    name: product-service # 应用名称
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        enabled: true # 如果不想使用 Nacos 进行服务注册和发现，设置为 false 即可
        server-addr: 192.168.10.101:8848,192.168.10.102:8848,192.168.10.103:8848 # Nacos 服务器地址，集群版直连 ip 模式

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server:
  port: 9090 # 端口

spring:
  application:
    name: order-service # 应用名称
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        enabled: true # 如果不想使用 Nacos 进行服务注册和发现，设置为 false 即可
        server-addr: 192.168.10.101:8848,192.168.10.102:8848,192.168.10.103:8848 # Nacos 服务器地址，集群版直连 ip 模式

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upstream nacos {
    server 192.168.10.101:8848;
    server 192.168.10.102:8848;
    server 192.168.10.103:8848;
}

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server:
  port: 7070 # 端口

spring:
  application:
    name: product-service # 应用名称
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        enabled: true # 如果不想使用 Nacos 进行服务注册和发现，设置为 false 即可
        server-addr: 192.168.10.100:80 # Nacos 服务器地址，集群版 Nginx 转发

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server:
  port: 9090 # 端口

spring:
  application:
    name: order-service # 应用名称
  # 配置 Nacos 注册中心
  cloud:
    nacos:
      discovery:
        enabled: true # 如果不想使用 Nacos 进行服务注册和发现，设置为 false 即可
        server-addr: 192.168.10.100:80 # Nacos 服务器地址，集群版 Nginx 转发