把传统工程改成dubbo（注解形式)分布式工程步骤

1.创建一个最简单的传统项目

OrderController.java

OrderServiceImpl.java

2.开始改造，创建dubbo目录结构

dubbo-parent:

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>dubbo</groupId>
  <artifactId>dubbo-parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>

  <name>dubbo-parent</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <dubbo-spring-boot>1.0.0</dubbo-spring-boot>
  </properties>
  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.6.RELEASE</version>
    </parent>
   <modules>
    <module>dubbo-api</module>
    <module>dubbo-provider</module>
    <module>dubbo-consumer</module>
  </modules>
  <dependencies>
     <!-- Spring Boot Dubbo 依赖 -->
        <dependency>
            <groupId>io.dubbo.springboot</groupId>
            <artifactId>spring-boot-starter-dubbo</artifactId>
            <version>${dubbo-spring-boot}</version>
        </dependency>
 
        <!-- Spring Boot Web 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
 
        <!-- Spring Boot Test 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
 
  </dependencies>

</project>

dubbo-api 存放的为实体和接口

dubbo-provider 服务提供者

启动之后，会将服务注册到zookpeer里面

dubbo-consumer 服务消费端

启动consumer:浏览器输入http://localhost:8094/say

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