新人一看就懂：Dubbo+Zookeeper 的 RPC 远程调用框架 demo

4、DubboProviderApplication

@SpringBootApplication

@EnableDubboConfiguration // 启用 dubbo 自动配置

public class DubboProviderApplication {

public static void main(String[] args) {

SpringApplication.run(DubboProviderApplication.class, args);

}

}

5、pom.xml

POM 是项目对象模型(Project Object Model)的简称，它是 Maven 项目中的文件，使用 XML 表示，名称叫做 pom.xml。作用类似 ant 的 build.xml 文件，功能更强大。该文件用于管理：源代码、配置文件、开发者的信息和角色、问题追踪系统、组织信息、项目授权、项目的 url、项目的依赖关系等等。

<?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>com.boot.dubbo.demo</groupId>

<artifactId>dubbo-provider</artifactId>

<version>0.0.1-SNAPSHOT</version>

<packaging>jar</packaging>

<name>dubbo-provider</name>

<description>Demo project for Spring Boot</description>

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>2.0.6.RELEASE</version>

</parent>

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

<java.version>1.8</java.version>

</properties>

<dependencies>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

<dependency>

<groupId>com.alibaba.spring.boot</groupId>

<artifactId>dubbo-spring-boot-starter</artifactId>

<version>2.0.0</version>

</dependency>

<dependency>

<groupId>org.projectlombok</groupId>

<artifactId>lombok</artifactId>

<version>1.16.20</version>

<scope>provided</scope>

</dependency>

<dependency>

<groupId>com.101tec</groupId>

<artifactId>zkclient</artifactId>

<version>0.10</version>

</dependency>

<dependency>

<groupId>org.apache.zookeeper</groupId>

<artifactId>zookeeper</artifactId>

<version>3.4.10</version>

<exclusions>

<exclusion>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-log4j12</artifactId>

</exclusion>

<exclusion>

<groupId>log4j</groupId>

<artifactId>log4j</artifactId>

</exclusion>

</exclusions>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-test</artifactId>

<scope>test</scope>

</dependency>

</dependencies>

<build>

<plugins>

<plugin>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-maven-plugin</artifactId>

</plugin>

</plugins>

</build>

</project>

6、application.yml

Spring Boot 配置文件有两种：application.yml 和 application.properties，作用是一样的，不过因为 yml 文件是树状结构，写起来有更好的层次感，更易于理解，所以很多人都选择了 yml 文件。

spring:

dubbo:

application:

name: dubbo-provider

protocol:

name: dubbo

port: 20880

registry:

address: zookeeper://127.0.0.1:2181

四、dubbo-consumer（服务消费方）

1、UserController

@RestController 注解相当于 @ResponseBody ＋ @Controller 合在一起的作用。如果要返回 json 内容，就用 @RestController，如果要返回到指定页面，就用 @Controller。

@Reference 注解就是用于标记这个服务具体使用了生产者的哪个接口实现。

@RestController

public class UserController {

@Reference // 引用 dubbo 服务器提供服务器接口

private UserService userService;

@GetMapping("/login")

public UserInfo login(UserInfo userInfo) {

return userService.login(userInfo);

}

}

2、DubboConsumerApplication

@SpringBootApplication

@EnableDubboConfiguration // 启用 dubbo 自动配置

public class DubboConsumerApplication {

public static void main(String[] args) {

SpringApplication.run(DubboConsumerApplication.class, args);

}

}

3、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>com.boot.dubbo.demo</groupId>

<artifactId>dubbo-consumer</artifactId>

<version>0.0.1-SNAPSHOT</version>

<packaging>jar</packaging>

<name>dubbo-consumer</name>

<description>Demo project for Spring Boot</description>

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>2.0.6.RELEASE</version>

</parent>

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

<java.version>1.8</java.version>

</properties>

<dependencies>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

<dependency>

<groupId>com.boot.dubbo.demo</groupId>

<artifactId>dubbo-provider</artifactId>

<version>0.0.1-SNAPSHOT</version>

</dependency>

<dependency>

<groupId>com.alibaba.spring.boot</groupId>

<artifactId>dubbo-spring-boot-starter</artifactId>

<version>2.0.0</version>

</dependency>

<dependency>

<groupId>com.101tec</groupId>

<artifactId>zkclient</artifactId>

<version>0.10</version>

</dependency>

<dependency>

<groupId>org.apache.zookeeper</groupId>

<artifactId>zookeeper</artifactId>

<version>3.4.10</version>

<exclusions>

<exclusion>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-log4j12</artifactId>

</exclusion>

<exclusion>

<groupId>log4j</groupId>

<artifactId>log4j</artifactId>

</exclusion>

</exclusions>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-test</artifactId>

<scope>test</scope>

</dependency>

</dependencies>

<build>

<plugins>

<plugin>

<groupId>org.springf

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ramework.boot</groupId>

<artifactId>spring-boot-maven-plugin</artifactId>

</plugin>

</plugins>

</build>

</project>

4、application.yml

spring:

dubbo:

application:

name: dubbo-consumer

protocol:

name: dubbo

port: 20880