Dubbo学习记录1

写在前面

这里记录下springboot-dubbo的学习记录

• 准备

  找到官方提供的示例项目，clone到本地开发工具，​​​项目地址​​

zookeeper 我这里用的 3.4.10 版本

还有zookeeper可视化工具 ​​下载地址​​​，

其实还有个 Dubbo-server-admin，也可以监控Dubbo服务，路由监控和发起RPC调用等.

一、启动 Zookeeper和可视化工具

• windows窗口，双击zkServer.cmd或者命令行启动

• zk 可视化，解压后进入build目录执行命令

  ​​

  ​java -jar zookeeper-dev-ZooInspector.jar​

  ​

二、测试registry-samples --> zookeeper

先启动provider，再启动comsumer

2.1 Provider配置、使用

application.properties

# Spring boot application
spring.application.name=dubbo-registry-zookeeper-provider-sampleLS
# Base packages to scan Dubbo Component: @org.apache.dubbo.config.annotation.Service
dubbo.scan.base-packages=org.apache.dubbo.spring.boot.sample.provider.service

# Dubbo Application
## The default value of dubbo.application.name is ${spring.application.name}
## dubbo.application.name=${spring.application.name}

# Dubbo Protocol
dubbo.protocol.name=dubbo
## Random port
dubbo.protocol.port=-1

## Dubbo Registry
dubbo.registry.address=zookeeper://127.0.0.1:2181
dubbo.registry.file = ${user.home}/dubbo-cache/${spring.application.name}/dubbo.cache

## DemoService version
demo.service.version=1.0.0      

使用时用 DubboService，这里只是简单使用，还可以配置并发数，token等等

@DubboService(version = "${demo.service.version}")
public class DefaultDemoService implements DemoService {

    /**
     * The default value of ${dubbo.application.name} is ${spring.application.name}
     */
    @Value("${dubbo.application.name}")
    private String serviceName;

    @Override
    public String sayHello(String name) {
        return String.format("[%s] : Hello, %s", serviceName, name);
    }
}      

2.2 Consumer

application.properties

spring:
  application:
    name: dubbo-registry-zookeeper-consumer-sampleLS

demo:
  service:
    version: 1.0.0

embedded:
  zookeeper:
    port: 2181

dubbo:
  registry:
    address: zookeeper://127.0.0.1:${embedded.zookeeper.port}
    file: ${user.home}/dubbo-cache/${spring.application.name}/dubbo.cache      

使用，这种注入@DubboReference(version = “${demo.service.version}”),还可以配置 缓存，存根，负载均衡，参数等等

@DubboReference(version = "${demo.service.version}")
    private DemoService demoService;

    public ApplicationRunner runner() {
        return args -> logger.info(demoService.sayHello("mercyblitz"));
    }      

2.3 ZK可视化，查看Dubbo服务节点元数据

三、测试 service-introspection-samples