SpringCloud-Nacos

一、介绍

（1）作为服务注册中心和配置中心
（2）等价于：Eureka+Config+Bus
（3）nacos集成了ribbon，支持负载均衡

二、安装

（1）官网
（2）

（3）如果是单节点部署，修改startup.cmd后启动

（4）运行http://localhost:8848/nacos/
（5）

三、编写服务提供者

（1）编写pom.xml

<?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"><parent><artifactId>demo20220821</artifactId><groupId>com.wsh.springcloud</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>cloudalibaba-provider-payment9001</artifactId><dependencies><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-nacos-discovery</artifactId></dependency><dependency><groupId>com.wsh.springcloud</groupId><artifactId>cloud-api-common</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies>
</project>

（2）编写application.yml

server:port: 9001spring:application:name: cloudalibaba-provider-paymentcloud:nacos:discovery:server-addr: localhost:8848management:endpoints:web:exposure:include: "*"

（3）编写启动类

package com.wsh.springcloud;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;/*** @ClassName ConfigMain3344* @Description: TODO* @Author wshaha* @Date 2023/10/15* @Version V1.0**/
@SpringBootApplication
@EnableDiscoveryClient
public class ProviderPayment9001 {public static void main(String[] args) {SpringApplication.run(ProviderPayment9001.class, args);}
}

（4）编写Controller

package com.wsh.springcloud.controller;import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;/*** @ClassName TestController* @Description: TODO* @Author wshaha* @Date 2023/10/18* @Version V1.0**/
@RestController
public class TestController {@Value("${server.port}")private String port;@GetMapping("/payment/test")public String test(){return "test: " + port;}
}

（5）启动

（6）按照此配置创建9002，运行

四、编写服务提供者

（1）编写pom.xml

<?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"><parent><artifactId>demo20220821</artifactId><groupId>com.wsh.springcloud</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>cloudalibaba-consumer-order83</artifactId><dependencies><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-nacos-discovery</artifactId></dependency><dependency><groupId>com.wsh.springcloud</groupId><artifactId>cloud-api-common</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies>
</project>

（2）编写application.yml

server:port: 83spring:application:name: cloudalibaba-consumer-ordercloud:nacos:discovery:server-addr: localhost:8848management:endpoints:web:exposure:include: "*"server-url: http://cloudalibaba-provider-payment

（3）编写启动类

package com.wsh.springCloud;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;/*** @ClassName ConsumerOrder83* @Description: TODO* @Author wshaha* @Date 2023/10/18* @Version V1.0**/
@EnableDiscoveryClient
@SpringBootApplication
public class ConsumerOrder83 {public static void main(String[] args) {SpringApplication.run(ConsumerOrder83.class, args);}
}

（4）编写配置类

package com.wsh.springCloud.config;import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;/*** @ClassName MyConfig* @Description: TODO* @Author wshaha* @Date 2023/10/18* @Version V1.0**/
@Configuration
public class MyConfig {@Bean@LoadBalancedpublic RestTemplate restTemplate(){return new RestTemplate();}
}

（5）编写Controller

package com.wsh.springCloud.controller;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;/*** @ClassName TestController* @Description: TODO* @Author wshaha* @Date 2023/10/18* @Version V1.0**/
@RestController
public class TestController {@Value("${server-url}")private String url;@Autowiredprivate RestTemplate restTemplate;@GetMapping("/consumer/test")public String test(){String rtn = restTemplate.getForObject(url + "/payment/test", String.class);return rtn;}
}

（6）运行

五、编写服务配置中心客户端

（1）编写pom.xml

<?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"><parent><artifactId>demo20220821</artifactId><groupId>com.wsh.springcloud</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>cloudalibaba-config-client3377</artifactId><dependencies><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-nacos-config</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-nacos-discovery</artifactId></dependency><dependency><groupId>com.wsh.springcloud</groupId><artifactId>cloud-api-common</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies>
</project>

（2）编写bootstrap.yaml

server:port: 3377spring:application:name: cloudalibaba-config-clientcloud:nacos:discovery:server-addr: localhost:8848config:server-addr: localhost:8848file-extension: yamlmanagement:endpoints:web:exposure:include: "*"

（3）编写application.yaml

spring:profiles:active: dev

（4）编写启动类

package com.wsh.springcloud;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;/*** @ClassName ConfigMain3344* @Description: TODO* @Author wshaha* @Date 2023/10/15* @Version V1.0**/
@SpringBootApplication
@EnableDiscoveryClient
public class ConfigClient3377 {public static void main(String[] args) {SpringApplication.run(ConfigClient3377.class, args);}
}

（5）编写Controller

package com.wsh.springcloud.controller;import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;/*** @ClassName TestController* @Description: TODO* @Author wshaha* @Date 2023/10/18* @Version V1.0**/
@RestController
@RefreshScope
public class TestController {@Value("${myInfo}")private String myInfo;@GetMapping("/configClient/myInfo")public String test(){return "myInfo: " + myInfo;}
}

（6）nacos添加配置（DataID = spring.application.name + spring.profiles.active + spring.cloud.nacos.config.file-extension）

（7）运行

六、命名空间、组名、DataId

（1）

（2）

（3）同时测试命名空间、组名、DataId
a、修改bootstrap.yaml

server:port: 3377spring:application:name: cloudalibaba-config-clientcloud:nacos:discovery:server-addr: localhost:8848config:server-addr: localhost:8848file-extension: yamlnamespace: e9b0b33c-533d-4c8d-9e77-6a91e9dd2f5fgroup: TESTmanagement:endpoints:web:exposure:include: "*"

b、新建命名空间TEST

c、创建配置

d、运行

七、配置持久化

（1）运行\nacos\conf下的mysql-schema.sql

（2）编写\nacos\conf下的application.properties

（3）运行

八、linux安装

（1）修改conf下的application.properties

（2）开放端口8848iptables -I IN_public_allow -s 0.0.0.0/0 -p tcp --dport 8848 -j ACCEPT
（3）执行./startup.sh