10分钟搞定Spring Boot + Dubbo + Dubbo admin UI一整套分布式解决方案
本机环境
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
开始搭建
Dubbo-Api
提供给外部使用
新建一个Dubbo-api 供consumer 和 provider使用
仅仅包含一个HelloService
public interface HelloService {
String sayHello(String name);
}
Dubbo-Provider
pom依赖
<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>${dubbo.version}</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- Dubbo Spring Boot Starter -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-framework</artifactId>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<exclusions>
<exclusion>
<artifactId>log4j</artifactId>
<groupId>log4j</groupId>
</exclusion>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
</dependency>
</dependencies>
这些依赖都缺一不可,接下来就实现dubbo-api提供的Service方法即可
import com.skrein.dubbo.api.service.HelloService;
import org.apache.dubbo.config.annotation.Service;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
// 指定dubbo-provider的版本
@Service(version = "${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;
}
}
@Service: 这个注解是org.apache.dubbo提供的
然后BootApplication设置@EnableDubbo 即可完成一个最简单的Provider
@SpringBootApplication
@EnableDubbo
public class BootApplication {
public static void main(String[] args) {
SpringApplication.run(BootApplication.class, args);
}
}
配置文件配置通过Zookeeper作为我们的注册中心:
application.yml
dubbo:
registry:
address: zookeeper://127.0.0.1:2181 # 注册中心地址
protocol:
port: -1 # 随机端口号，我们等会会通过不同端口起2台Provider,所以使用随机端口
name: dubbo
metadata-report:
address: zookeeper://127.0.0.1:2181 # dubbo-admin需要这个配置上报meta信息
demo:
service:
version: 0.0.1
spring:
application:
name: dubbo-provider
main:
allow-bean-definition-overriding: true # 不设置会与Spring Boot冲突
然后我们通过命令行启动
$ java -jar target/dubbo-provider-0.0.1.jar --server.port=9000
$ java -jar target/dubbo-provider-0.0.1.jar --server.port=9000
Dubbo-Consumer
pom配置同Dubbo-provider, Dubbo-Consumer这里作为一个Web服务
@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);
}
}
启动类加上@EnableDubbo即可
application.yml:
dubbo:
registry:
address: zookeeper://127.0.0.1:2181 # Zookeeper注册中心地址
protocol:
port: -1 # 随机端口
name: dubbo # dubbo协议名字
spring:
main:
allow-bean-definition-overriding: true # 不设置会与Spring Boot冲突
application:
name: dubbo-consumer
demo:
service:
version: 0.0.1 # 消费者版本与生产者版本一致
spring.main.allow-bean-definition-overriding=true: Spring Boot 2.7.0 Environment Beans conflict in Spring Boot
命令行启动:
$ java -jar target/dubbo-consumer-0.0.1.jar
启动之后如下:
配置Dubbo-admin Dubbo-admin-ui
dubbo-admin-server
官网地址 Dubb-admin-UI
把项目下载下来，使用IDEA打开
首先启动dubbo-admin-server,注意这里的端口号，可能会与dubbo-consumer冲突，我们这里修改
dubbo-admin-server: 把端口号修改为8888
--server.port=8888
然后启动就行了。
dubbo-admin-ui
前端使用Vue,所以需要Node环境
推荐一个我常用的node管理： NVM
NVM-windows: https://github.com/coreybutler/nvm-windows
安装完毕
$ nvm install 8.4.0
$ nvm use 8.4.0
nvm 安装node如下:
然后切换到dubbo-admin-ui这个目录下:
执行 npm install
$ npm install
我本机已经执行过，没有执行过的等待安装:
你们还记得，admin-server的端口号为 8888 ,因此我们需要把dubbo-admin-ui连接server的端口号也要修改(默认是8080)
修改 config/index.js
然后启动dubbo-admin-ui:
$ cnpm run dev
访问 http://localhost:8081
可以看到我们的服务已经被admin监控了。
点击详情,也能看到我们的2个provider也是在监控当中的：
代码已经上传至我的github,欢迎star,后续会持续更新，为你带来分布式，高并发等等详细例子。
