SpringCloud+Alimama测试 | nacos组件和测试

一、创建环境

创建maven 父工程

根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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ouer</groupId>
    <artifactId>springcloud-parent</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.7.RELEASE</version>
        <relativePath/>
    </parent>

    <modules>
        <module>nacos-server</module>
        <module>nacos-consumer</module>
    </modules>

    <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>Greenwich.RELEASE</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>0.2.2.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.2</version>
                <optional>true</optional>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

创建子工程-生产者

创建springboot子工程

pom.xml

<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>

	</dependencies>

配置文件

server.port=8001
spring.application.name=nacos-provider
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
management.endpoints.web.exposure.include=*

启动类

@SpringBootApplication
@EnableDiscoveryClient
public class NacosServerApplication {

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

	@RestController
	public class TestController {
		@GetMapping("/hello")
		public String hello(@RequestParam String name) {
			System.out.println("invoked name = " + name);
			return "hello " + name;
		}
	}
}

创建子项目-消费者

pom.xml与生产者一致

配置文件

server:
  port: 8002

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
  application:
    name: nacos-consumer

@SpringBootApplication
@EnableDiscoveryClient
public class NacosConsumerApplication {

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


	@Slf4j
	@RestController
	static class TestController {

		@Autowired
		LoadBalancerClient loadBalancerClient;

		@GetMapping("/test")
		public String test() {
			// 通过spring cloud common中的负载均衡接口选取服务提供节点实现接口调用
			ServiceInstance serviceInstance = loadBalancerClient.choose("nacos-provider");
			String url = serviceInstance.getUri() + "/hello?name=" + "didi";
			RestTemplate restTemplate = new RestTemplate();
			String result = restTemplate.getForObject(url, String.class);
			return "Invoke : " + url + ", return : " + result;
		}
	}

}

二、测试

下载  nacos

启动命令  startup.cmd

启动nacos

浏览器访问: http://127.0.0.1:8848/nacos/

则可以看到nacos界面   用户名密码默认为 nacos

启动生成者和消费者

点击nacos的服务列表可看到注册信息

三、坑

springboot、springcloud和alibaba版本不兼容时，nacos无法注册。

兼容版本

Release Train	Boot Version	Spring Cloud Alibaba
Greenwich	2.1.x	0.2.2
Finchley	2.0.x	0.2.1
Edgware	1.5.x	0.1.1
Dalston	1.5.x	0.1.1

 

代码传送门

 

参考：

https://blog.youkuaiyun.com/qq_38423105/article/details/88818087

http://blog.didispace.com/spring-cloud-alibaba-1/