环境搭建

1. zookeeper 下载安装（环境变量配置）
   1. 使用3.4.14版本https://archive.apache.org/dist/zookeeper/zookeeper-3.4.14/

项目搭建

项目模块

Dubbo-demo-provider
Dubbo-demo-consumer
Dubbo-demo-sdk
Maven 依赖

    <properties>
        <zookeeper.version>2.12.0</zookeeper.version>
    </properties>
        <!--zookeeper-->
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.7</version>
        </dependency>
        <!--dubbo引入-->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.7.3</version>
        </dependency>

        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>

dubbo-admin（Dubbo控制台）

GitHub地址：https://github.com/apache/dubbo-admin

下载代码,执行 mvn clean package -Dmaven.test.skip=true

元数据出不来
解决办法：https://blog.csdn.net/wangxq0224/article/details/99304253

1. 添加zk节点

   package com.yth.dubbo.provider.service.impl;
   import org.apache.curator.framework.CuratorFramework;
   import org.apache.curator.framework.CuratorFrameworkFactory;
   import org.apache.curator.retry.ExponentialBackoffRetry;
   public class Test {
       public static void main(String[] args) {
           try {
               CuratorFramework zkClient = CuratorFrameworkFactory.builder().
                       connectString("127.0.0.1:2181").
                       retryPolicy(new ExponentialBackoffRetry(1000, 3)).build();
               zkClient.start();
               if (zkClient.checkExists().forPath("/dubbo/config/dubbo/dubbo.properties") == null) {
                   zkClient.create().creatingParentsIfNeeded().forPath("/dubbo/config/dubbo/dubbo.properties");
               }
               zkClient.setData().forPath("/dubbo/config/dubbo/dubbo.properties", ("dubbo.registry.address=zookeeper://127.0.0.1:2181\n" +
                       "dubbo.metadata-report.address=zookeeper://127.0.0.1:2181").getBytes());
           } catch (Exception e) {
               e.printStackTrace();
           }
       }
   }
   

   2. application.properties配置

      dubbo.registry.address=zookeeper://127.0.0.1:2181
      dubbo.metadata-report.address=zookeeper://127.0.0.1:2181
      

dubbo-monitor（监控中心）

用来统计服务的调⽤次数和调⽤时间的监控中⼼。
代码路径

dubbo 统一异常处理