nacos 服務(wù)注冊(cè)與發(fā)現(xiàn)代替Eureka艾蓝。
- nacos-server
下載九妈，安裝泰演，啟動(dòng)可以參考官方文檔。本文章使用單機(jī)模式
nacos 替換Eureka 做服務(wù)注冊(cè)中心
- 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 https://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>2.2.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>user</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>user</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud-alibaba.version>2.2.0.RELEASE</spring-cloud-alibaba.version>
<spring-cloud.version>Hoxton.SR6</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<!-- <dependency>-->
<!-- <groupId>org.apache.dubbo</groupId>-->
<!-- <artifactId>dubbo-spring-boot-starter</artifactId>-->
<!-- <version>2.7.5</version>-->
<!-- </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.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${spring-cloud-alibaba.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
- application.yml
server:
port: 8888
spring:
application:
name: user-service
cloud:
nacos:
discovery:
server-addr: 127.0.0.1:8848 # 注冊(cè)中心地址
- UserApplication
@EnableFeignClients
@SpringBootApplication
@EnableDiscoveryClient // 使用該注解搁凸，開始服務(wù)注冊(cè)
public class UserApplication {
public static void main(String[] args) {
SpringApplication.run(UserApplication.class, args);
}
}
-
nacos 管理界面
注意：雖然在這里使用的 nacos 作為注冊(cè)中心媚值，其他spring cloud Netflix 組件一樣可以使用
- feign 調(diào)用
@FeignClient(value = "role-service")// 和以前一樣
public interface RoleService {
@GetMapping
String role();
}
總結(jié)：我們簡(jiǎn)單的使用nacos 作為注冊(cè)中心，算是入門操作护糖。使用非常簡(jiǎn)單褥芒，其他更詳細(xì)的使用可以參考官方文檔。后面會(huì)開始分析nacos 作為注冊(cè)的實(shí)現(xiàn)原理嫡良。
