10分鐘搞定Spring Boot + Dubbo + Dubbo admin UI一整套分佈式解決方案

10分鐘搞定Spring Boot + Dubbo + Dubbo admin UI一整套分佈式解決方案

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);
}
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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>
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這些依賴都缺一不可,接下來就實現dubbo-api提供的Service方法便可

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;
    }
}
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@Service: 這個註解是org.apache.dubbo提供的

而後BootApplication設置@EnableDubbo 便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);
    }

}
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配置文件配置經過Zookeeper做爲咱們的註冊中心:

application.yml

dubbo:
 registry:
 address: zookeeper://127.0.0.1:2181 # 註冊中心地址
 protocol:
 port: -1 # 隨機端口號，咱們等會會經過不一樣端口起2臺Provider,因此使用隨機端口
 name: dubbo
 metadata-report:
 address: zookeeper://127.0.0.1:2181 # dubbo-admin須要這個配置上報meta信息
demo:
 service:
 version: 0.0.1

spring:
 application:
 name: dubbo-provider
 main:
 allow-bean-definition-overriding: true # 不設置會與Spring Boot衝突
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而後咱們經過命令行啓動

$ java -jar target/dubbo-provider-0.0.1.jar --server.port=9000
$ java -jar target/dubbo-provider-0.0.1.jar --server.port=9000
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Dubbo-Consumer

pom配置同Dubbo-provider, Dubbo-Consumer這裏做爲一個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);
    }
}
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啓動類加上@EnableDubbo便可

application.yml:

dubbo:
 registry:
 address: zookeeper://127.0.0.1:2181 # Zookeeper註冊中心地址
 protocol:
 port: -1 # 隨機端口
 name: dubbo # dubbo協議名字


spring:
 main:
 allow-bean-definition-overriding: true # 不設置會與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
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spring.main.allow-bean-definition-overriding=true: Spring Boot 2.7.0 Environment Beans conflict in Spring Boot

命令行啓動:

$ java -jar target/dubbo-consumer-0.0.1.jar
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啓動以後以下:

配置Dubbo-admin Dubbo-admin-ui

dubbo-admin-server

官網地址 Dubb-admin-UI

把項目下載下來，使用IDEA打開

首先啓動dubbo-admin-server,注意這裏的端口號，可能會與dubbo-consumer衝突，咱們這裏修改

dubbo-admin-server: 把端口號修改成8888

--server.port=8888

而後啓動就好了。

dubbo-admin-ui

前端使用Vue,因此須要Node環境

推薦一個我經常使用的node管理： NVM

NVM-windows: github.com/coreybutler…

安裝完畢

$ nvm install 8.4.0
$ nvm use 8.4.0
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nvm 安裝node以下:

而後切換到dubbo-admin-ui這個目錄下:

執行 npm install

$ npm install
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我本機已經執行過，沒有執行過的等待安裝:

大家還記得，admin-server的端口號爲 8888 ,所以咱們須要把dubbo-admin-ui鏈接server的端口號也要修改(默認是8080)

修改 config/index.js

而後啓動dubbo-admin-ui:

$ cnpm run dev
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訪問 http://localhost:8081

能夠看到咱們的服務已經被admin監控了。

點擊詳情,也能看到咱們的2個provider也是在監控當中的：

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代碼已經上傳至個人github,歡迎star,後續會持續更新，爲你帶來分佈式，高併發等等詳細例子。