Spring Cloud Alibaba提供者及消费者
Nacos简介
1.官方文档介绍
Nacos is committed to help you discover, configure, and manage your microservices. It provides a set of simple and useful features enabling you to realize dynamic service discovery, service configuration, service metadata and traffic management.
Nacos makes it easier and faster to construct, deliver and manage your microservices platform. It is the infrastructure that supports a service-centered modern application architecture with a microservices or cloud-native approach.
2.翻译过来
Nacos致力于帮助您发现，配置和管理微服务。它提供了一组简单有用的功能，使您能够实现动态服务发现，服务配置，服务元数据和流量管理。
Nacos使构建，交付和管理您的微服务平台变得更容易，更快捷。它是通过微服务或云原生方法支持以服务为中心的现代应用程序体系结构的基础架构。
3.GitHub下载地址
Nacos下载
4.百度云盘下载
Nacos下载
提取码: j4b1
5.docker下载
Nacos启动页面
访问nacos地址 ： http://localhost:8848/nacos/
user:nacos
passwd:nacos
创建项目
1.创建结构如下
1.1Dependencies中pom.xml
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.0.6.RELEASE
com.liugui
hello-spring-cloud-alibaba-dependencies
1.0.0-SNAPSHOT
pom
hello-spring-cloud-alibaba-dependencies
1.8
UTF-8
UTF-8
Finchley.SR2
0.2.1.RELEASE
org.springframework.cloud
spring-cloud-dependencies
${spring-cloud.version}
pom
import
org.springframework.cloud
spring-cloud-alibaba-dependencies
${spring-cloud-alibaba.version}
pom
import
org.apache.maven.plugins
maven-compiler-plugin
true
org.apache.maven.plugins
maven-jar-plugin
false
true
true
true
org.apache.maven.plugins
maven-resources-plugin
org.apache.maven.plugins
maven-install-plugin
org.apache.maven.plugins
maven-clean-plugin
org.apache.maven.plugins
maven-antrun-plugin
org.apache.maven.plugins
maven-dependency-plugin
org.apache.maven.plugins
maven-javadoc-plugin
prepare-package
jar
net.alchim31.maven
yuicompressor-maven-plugin
1.5.1
prepare-package
compress
UTF-8
false
true
30000
true
**/*.js
**/*.css
**/*.min.js
**/*.min.css
src/main/java
**/*.java
src/main/resources
aliyun-repos
Aliyun Repository
http://maven.aliyun.com/nexus/content/groups/public
true
false
sonatype-repos
Sonatype Repository
https://oss.sonatype.org/content/groups/public
true
false
sonatype-repos-s
Sonatype Repository
https://oss.sonatype.org/content/repositories/snapshots
false
true
spring-snapshots
Spring Snapshots
https://repo.spring.io/snapshot
true
spring-milestones
Spring Milestones
https://repo.spring.io/milestone
false
aliyun-repos
Aliyun Repository
http://maven.aliyun.com/nexus/content/groups/public
true
false
2.创建提供者
需要注意的是在parent中需要指明上一级
2.1Provider中pom.xml
4.0.0
com.liugui
hello-spring-cloud-alibaba-dependencies
1.0.0-SNAPSHOT
../pom.xml
hello-spring-cloud-alibaba-nacos-provider
jar
hello-spring-cloud-alibaba-nacos-provider
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-actuator
org.springframework.boot
spring-boot-starter-test
test
junit
junit
4.10
org.springframework.cloud
spring-cloud-starter-alibaba-nacos-discovery
org.junit.jupiter
junit-jupiter-api
RELEASE
test
org.springframework.boot
spring-boot-maven-plugin
com.liugui.hello.spring.cloud.alibaba.nacos.provider.ProviderApplication
2.2Provider中ProviderApplication
@EnableDiscoveryClient和@EnableEurekaClient共同点就是：都是能够让注册中心能够发现，扫描到改服务。
不同点：@EnableEurekaClient只适用于Eureka作为注册中心，@EnableDiscoveryClient 可以是其他注册中心。
package com.liugui.hello.spring.cloud.alibaba.nacos.provider;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@EnableDiscoveryClient
@SpringBootApplication
public class ProviderApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class, args);
}
}
2.3Provider中Controller
@RestController
public class ProviderController {
@Value("${server.port}")
private String port;
@GetMapping(value = "/echo/{message}")
public String echo(@PathVariable String message){
return "Hello Nacos Discovery" + message + " port is" + port ;
}
}
2.4Provider中Application.properties
spring.application.name=nacos-provider
spring.cloud.nacos.discovery.server-addr=192.168.199.221:8848
server.port=8082
3.创建消费者
3.1Consumer中pom.xml
4.0.0
com.liugui
hello-spring-cloud-alibaba-dependencies
1.0.0-SNAPSHOT
../pom.xml
com.liugui
hello-spring-cloud-alibaba-nacos-consumer
0.0.1-SNAPSHOT
hello-spring-cloud-alibaba-nacos-consumer
Demo project for Spring Boot
1.8
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-actuator
org.springframework.boot
spring-boot-starter-test
test
org.springframework.cloud
spring-cloud-starter-alibaba-nacos-discovery
org.junit.jupiter
junit-jupiter-api
RELEASE
test
org.springframework.boot
spring-boot-maven-plugin
com.liugui.hello.spring.cloud.alibaba.nacos.consumer.ConsumerApplication
3.2Consumer中Configuration
@Configuration
public class NacosConsumerConfiguration {
@Bean
public RestTemplate restTemplate(){
return new RestTemplate();
}
}
3.3Consumer中ConsumerController
@RestController
public class ConsumerController {
@Autowired
private LoadBalancerClient loadBalancerClient;
@Autowired
private RestTemplate restTemplate;
@Value("${spring.application.name}")
private String appName;
@GetMapping(value = "/echo/best/name")
public String echo(){
ServiceInstance instance = loadBalancerClient.choose("nacos-provider");
String url = instance.getUri() + "/echo/" + appName;
System.out.println(url+"%%%%%%%%%");
String forObject = restTemplate.getForObject(url, String.class);
return forObject;
}
}
3.4Consumer中ConsumerApplication
@EnableDiscoveryClient
@SpringBootApplication
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, args);
}
}
3.5Consumer中Application.properties
spring.application.name=nacos-consumer
spring.cloud.nacos.discovery.server-addr=192.168.199.221:8848
server.port= 9091