10分鐘搞定Spring Boot + Dubbo + Dubbo admin UI一整套分散式解決方案
本機環境
JDK: 1.8.0_161
Spring Boot: 2.1.3.RELEASE
Zookeeper: 3.4.11
org.apache.dubbo: 2.7.0
Node: v8.4.0
Npm: 5.3.0
開始搭建
Dubbo-Api
提供給外部使用
新建一個Dubbo-api 供consumer 和 provider使用
僅僅包含一個HelloService
public interface HelloService {
String sayHello(String name);
}
複製程式碼Dubbo-Provider
pom依賴
<properties>
<java.version>1.8</java.version>
<spring-boot.version>2.1.3.RELEASE</spring-boot.version>
<dubbo.version>2.7.0</dubbo.version>
</properties>
<dependencyManagement>
<dependencies>
<!-- Spring Boot -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- Apache Dubbo -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-dependencies-bom</artifactId>
<version>${dubbo.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
<version>${dubbo.version}</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- Dubbo Spring Boot Starter -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-framework</artifactId>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<exclusions>
<exclusion>
<artifactId>log4j</artifactId>
<groupId>log4j</groupId>
</exclusion>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
</dependency>
</dependencies>
複製程式碼這些依賴都缺一不可,接下來就實現dubbo-api提供的Service方法即可
import com.skrein.dubbo.api.service.HelloService;
import org.apache.dubbo.config.annotation.Service;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
// 指定dubbo-provider的版本
@Service(version = "${demo.service.version}")
@Component
public class HelloServiceImpl implements HelloService {
@Value("${server.port}")
String port;
@Value("${spring.application.name}")
String appName;
@Override
public String sayHello(String name) {
return appName + ":" + port + "\n hello " + name;
}
}
複製程式碼@Service: 這個註解是org.apache.dubbo提供的
然後BootApplication設定@EnableDubbo 即可完成一個最簡單的Provider
@SpringBootApplication
@EnableDubbo
public class BootApplication {
public static void main(String[] args) {
SpringApplication.run(BootApplication.class, args);
}
}
複製程式碼配置檔案配置通過Zookeeper作為我們的註冊中心:
application.yml
dubbo:
registry:
address: zookeeper://127.0.0.1:2181 # 註冊中心地址
protocol:
port: -1 # 隨機埠號，我們等會會通過不同埠起2臺Provider,所以使用隨機埠
name: dubbo
metadata-report:
address: zookeeper://127.0.0.1:2181 # dubbo-admin需要這個配置上報meta資訊
demo:
service:
version: 0.0.1
spring:
application:
name: dubbo-provider
main:
allow-bean-definition-overriding: true # 不設定會與Spring Boot衝突
複製程式碼然後我們通過命令列啟動
$ java -jar target/dubbo-provider-0.0.1.jar --server.port=9000
$ java -jar target/dubbo-provider-0.0.1.jar --server.port=9000
複製程式碼Dubbo-Consumer
pom配置同Dubbo-provider, Dubbo-Consumer這裡作為一個Web服務
@RestController
public class HelloController {
@Reference(version = "${demo.service.version}")
private HelloService helloService;
@GetMapping("/hello/{name}")
public String hello(@PathVariable(name = "name") String name) {
return helloService.sayHello(name);
}
}
複製程式碼啟動類加上@EnableDubbo即可
application.yml:
dubbo:
registry:
address: zookeeper://127.0.0.1:2181 # Zookeeper註冊中心地址
protocol:
port: -1 # 隨機埠
name: dubbo # dubbo協議名字
spring:
main:
allow-bean-definition-overriding: true # 不設定會與Spring Boot衝突
application:
name: dubbo-consumer
demo:
service:
version: 0.0.1 # 消費者版本與生產者版本一致
複製程式碼spring.main.allow-bean-definition-overriding=true: Spring Boot 2.7.0 Environment Beans conflict in Spring Boot
命令列啟動:
$ java -jar target/dubbo-consumer-0.0.1.jar
複製程式碼啟動之後如下:
配置Dubbo-admin Dubbo-admin-ui
dubbo-admin-server
官網地址 Dubb-admin-UI
把專案下載下來，使用IDEA開啟
首先啟動dubbo-admin-server,注意這裡的埠號，可能會與dubbo-consumer衝突，我們這裡修改
dubbo-admin-server: 把埠號修改為8888
--server.port=8888
然後啟動就行了。
dubbo-admin-ui
前端使用Vue,所以需要Node環境
推薦一個我常用的node管理： NVM
NVM-windows: github.com/coreybutler…
安裝完畢
$ nvm install 8.4.0
$ nvm use 8.4.0
複製程式碼nvm 安裝node如下:
然後切換到dubbo-admin-ui這個目錄下:
執行 npm install
$ npm install
複製程式碼我本機已經執行過，沒有執行過的等待安裝:
你們還記得，admin-server的埠號為 8888 ,因此我們需要把dubbo-admin-ui連線server的埠號也要修改(預設是8080)
修改 config/index.js
然後啟動dubbo-admin-ui:
$ cnpm run dev
複製程式碼
訪問 http://localhost:8081
可以看到我們的服務已經被admin監控了。
點選詳情,也能看到我們的2個provider也是在監控當中的：
程式碼已經上傳至我的github,歡迎star,後續會持續更新，為你帶來分散式，高併發等等詳細例子。