NACOS学习：01搭建工程

将原来eureka项目改成nacos，先记录这几天的学习成果
梦神十夜编写于 2022年09月22日 20:16 浏览数量1682 SPRING-BOOT SPRING-CLOUD

版本概述

spring-boot-starter-parent

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <!--<version>2.0.4.RELEASE</version>--><!--旧版本，从本版本开始升级的，因为mysql版本6只支持这个-->
        <!--<version>2.7.3</version>--><!--最新版2022/09/20 只支持JDK17-->
        <!--<version>2.6.11</version>--><!--支持JDK11-->
        <version>2.5.14</version><!--支持JDK8-->
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

spring-cloud-dependencies

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <!--<spring-cloud.version>2021.0.4</spring-cloud.version>--><!--springboot2.6.x和2.7.x对应版本 aka Jubilee-->
    <spring-cloud.version>2020.0.3</spring-cloud.version><!--springboot2.4.x和2.5.x对应版本 aka Ilford-->
    <!--<nacos.version>2021.1</nacos.version>-->
    <nacos.version>2.2.9.RELEASE</nacos.version>
</properties>

<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>

微服务模块

pom文件，由原来eureka改为nacos

<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-openfeign</artifactId>
		</dependency>
	</dependencies>

nacos

<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-openfeign</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
		</dependency>

		<!-- nacos注册中心ribbon与loadbalancer冲突 -->
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
			<exclusions>
				<exclusion>
					<groupId>org.springframework.cloud</groupId>
					<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
				</exclusion>
			</exclusions>
		</dependency>

		<!-- nacos配置中心 -->
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-loadbalancer</artifactId>
		</dependency>
		<!--需要使用bootstrap，否则nacos的config不生效-->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-bootstrap</artifactId>
		</dependency>
	</dependencies>

bootstrap.yml

spring:
  application:
    name: spring-cloud-consumer
  cloud:
    nacos:
      username: nacos
      password: nacos
      server-addr: http://localhost:8848
      discovery:
        #注册中心地址
        server-addr: http://localhost:8848
        namespace: df7fd55f-0398-4ceb-97a1-bd240488612c   #我们在nacos中创建的空间名称
      config:
        #注册中心地址
        server-addr: http://localhost:8848
        namespace: df7fd55f-0398-4ceb-97a1-bd240488612c   #我们在nacos中创建的空间名称
        timeout: 3000
        refresh-enabled: true  #修改后自动加载
        group: DEFAULT_GROUP   #nacos配置文件所选择的group
        prefix: ${spring.application.name}
        file-extension: yaml  #读取nacos配置文件后缀

server:
  port: 7000

feign:
  # 开启熔断机制
  circuitbreaker:
    enabled: true
  # 设置超时时间
  httpclient:
    connection-timeout: 2000

启动类不变

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class ConsumerApplication {

	public static void main(String[] args) {
		try {
			SpringApplication.run(ConsumerApplication.class, args);
		}catch (Exception e){
//			e.printStackTrace();
			System.out.println(e.getMessage());
		}

	}
	
}

controller类

import com.sephy.consumer.hello.data.ResponseVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import com.sephy.consumer.hello.remote.HelloRemote;

@RestController
@RefreshScope
public class HelloController {

    //NacosConfigProperties
    //NacosPropertySource
    //CompositePropertySource
	@Value("${mengshen.fun.name}")
    private String name;
	@Value("${mengshen.fun.address}")
	private String address;
	@Value("${mengshen.fun.sex}")
	private String sex;

	@Autowired
    HelloRemote helloRemote;
	
    @RequestMapping("/hello/{name}")
    @ResponseBody
    public ResponseVo index(@PathVariable("name") String name) {
        ResponseVo vo = new ResponseVo();
        vo.setStatus(100);
        vo.setDesc(helloRemote.hello(name + " from consumer 1" ));
        vo.setObj(name+","+address+","+sex);
        return vo;
    }
    
}

feign接口类

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

@FeignClient(name= "spring-cloud-producer",fallback = HelloRemoteHystrix.class)
public interface HelloRemote {

	@RequestMapping(value = "/hello")
    public String hello(@RequestParam(value = "name") String name);
	
}

熔断类

import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestParam;

@Component
public class HelloRemoteHystrix implements HelloRemote{

	@Override
	public String hello(@RequestParam(value = "name") String name) {
		return "hello" +name+", this messge send failed ";
	}

}

gateway

pom

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
        </dependency>
        <!--<dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
        </dependency>-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
        </dependency>
        <!-- nacos注册中心 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- nacos配置中心 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <!--需要使用bootstrap，否则nacos的config不生效-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-bootstrap</artifactId>
        </dependency>

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

        <!--<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>-->
        <dependency>
            <groupId>com.github.penggle</groupId>
            <artifactId>kaptcha</artifactId>
            <version>2.3.2</version>
        </dependency>
    </dependencies>

bootstrap.yml

spring:
  application:
    name: spring-cloud-producer
  cloud:
    nacos:
      username: nacos
      password: nacos
      server-addr: http://localhost:8848
      discovery:
        #注册中心地址
        server-addr: http://localhost:8848
        namespace: df7fd55f-0398-4ceb-97a1-bd240488612c   #我们在nacos中创建的空间名称
      config:
        #注册中心地址
        server-addr: http://localhost:8848
        namespace: df7fd55f-0398-4ceb-97a1-bd240488612c   #我们在nacos中创建的空间名称
        timeout: 3000
        refresh-enabled: true  #修改后自动加载
        group: DEFAULT_GROUP   #nacos配置文件所选择的group
        prefix: ${spring.application.name}
        file-extension: yaml  #读取nacos配置文件后缀

server:
  port: 9000

nacos成果

集群

image.png

命名空间

image.png

服务列表

image.png

配置列表

image.png
梦神十夜[博主]评论于 2022年09月22日 20:34
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