Spring-Clould-Alibaba-Nacos[Config&RPC]

1、环境准备

• 我的环境
• Windows10
• JDK8
• SpringBoot：2.2.5.RELEASE
• spring-cloud-alibaba-dependencies：2.2.1.RELEASE
• Nacos-server：1.1.4

组件版本关系参考官网

父类工程POM文件

<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>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.2.5.RELEASE</version>
	</parent>
	<groupId>com.ads.nacos</groupId>
	<artifactId>spring-cloud-dubbo-nacos</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>pom</packaging>
	
	<properties>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>com.alibaba.cloud</groupId>
				<artifactId>spring-cloud-alibaba-dependencies</artifactId>
				<version>2.2.1.RELEASE</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

	<modules>
		<module>nacos-api</module>
		<module>nacos-provider</module>
		<module>nacos-concumer</module>
	</modules>

</project>

API 工程POM文件

<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>
	<parent>
		<groupId>com.ads.nacos</groupId>
		<artifactId>spring-cloud-dubbo-nacos</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>

	<artifactId>nacos-api</artifactId>
</project>

provider POM文件

<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>
	<parent>
		<groupId>com.ads.nacos</groupId>
		<artifactId>spring-cloud-dubbo-nacos</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>

	<artifactId>nacos-provider</artifactId>

	<dependencies>
		<dependency>
			<groupId>com.ads.nacos</groupId>
			<artifactId>nacos-api</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>

		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-dubbo</artifactId>
		</dependency>

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

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

</project>

consumer POM文件

<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>com.ads.nacos</groupId>
		<artifactId>spring-cloud-dubbo-nacos</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>

	<artifactId>nacos-concumer</artifactId>

	<dependencies>
		<dependency>
			<groupId>com.ads.nacos</groupId>
			<artifactId>nacos-api</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>

		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-dubbo</artifactId>
		</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>
	</dependencies>

</project>

2、配置文件

Spring Boot 配置文件的加载顺序，依次为 bootstrap.properties -> bootstrap.yml -> application.properties -> application.yml ，其中 bootstrap.properties 配置为最高优先级，配置如下：

nacos-config：

• group：config的分组
• file-extension：动态配置文件类型

注意：
若是引用了config的pom，这里必须使用 bootstrap.properties 进行配置，否则启动回报连接超时
注意：你可以使用 spring.cloud.nacos.config.refresh.enabled=false 来关闭动态刷新
可通过spring.profiles.active切换部署环境配置
其Data ID它的定义规则是：${prefix}-${spring.profile.active}.${file-extension}

2.1添加本地配置

bootstrap.properties修改spring.cloud.nacos.config.prefix=application-provider-1
application.yml 修改server.port:8008和dubbo.protocol.port:8998
application-provider-1.yml添加如下配置

localConfig: abc

bootstrap.properties修改spring.cloud.nacos.config.prefix=application-provider-2
application.yml 修改server.port:8009和dubbo.protocol.port:8999
application-provider-2.yml添加如下配置

localConfig: ABC

在引入配置文件的类上增加 @RefreshScope 注解，表示这个类下的配置内容支持动态刷新

2.2修改服务端配置

服务发现：

2.3配置文件

服务提供方 - 服务消费方

4、服务注册发现

启动2个配置下的consumer可以发现实例数为2，点开详情dubbo的2个端口发现为8998、8999

3、RPC服务调用

服务提供：

服务调用：

调用的version、group需保持一致

服务调用结果：

调用查看配置接口，可以发现服务端实现负载均衡