Springboot集成nacos实现服务发现和配置中心

Nacos是阿里巴巴开源的服务发现和配置中心的中间件，springboot集成nacos比较方便，只需要以下三步:

1、依赖配置（pom文件）

    <properties>
        <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
        <alibaba.version>0.9.0.RELEASE</alibaba.version>
        <nacos-config-spring-boot.version>0.2.1</nacos-config-spring-boot.version>
    </properties>
	 <dependencyManagement>
	        <dependencies>
	            <dependency>
	                <groupId>org.springframework.cloud</groupId>
	                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
	                <version>0.9.0.RELEASE</version>
	                <type>pom</type>
	                <scope>import</scope>
	            </dependency>
	            <dependency>
	                <groupId>org.springframework.cloud</groupId>
	                <artifactId>spring-cloud-dependencies</artifactId>
	                <version>${spring-cloud.version}</version>
	                <type>pom</type>
	                <scope>import</scope>
	            </dependency>
	        </dependencies>
	    </dependencyManagement>
		  <!-- nacos 注册中心依赖 -->
		        <dependency>
		            <groupId>org.springframework.cloud</groupId>
		            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
		            <exclusions>
		                <exclusion>
		                    <groupId>com.google.guava</groupId>
		                    <artifactId>guava</artifactId>
		                </exclusion>
		            </exclusions>
		        </dependency>
		        <!-- nacos 配置中心依赖 -->
		        <dependency>
		            <groupId>com.alibaba.boot</groupId>
		            <artifactId>nacos-config-spring-boot-starter</artifactId>
		            <version>${nacos-config-spring-boot.version}</version>
		            <exclusions>
		                <exclusion>
		                    <groupId>com.google.guava</groupId>
		                    <artifactId>guava</artifactId>
		                </exclusion>
		            </exclusions>
		        </dependency>

2、在bootstrap.yml文件声明服务发现的地址和配置中心的地址:

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

3、在springboot 的入口类加上

@SpringBootApplication(scanBasePackages = {
    
    "com.test.a"})
//这里开启服务发现
@EnableDiscoveryClient
//@NacosPropertySource(dataId = "custom-routers", autoRefreshed = true)
public class TestApplication {
    
    
    public static void main(String[] args) {
    
    
        SpringApplication.run(TestApplication .class, args);
    }

}

4、启动服务在nacos的ui运维页面查看服务

如果看到自己声明的服务已经注册上了，即可。