Dubbo+Zookeeper的RPC远程调用框架demo
2019-09-27
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Dubbo是阿里巴巴公司开源的一个高性能优秀的服务框架，使得应用可通过高性能的 RPC 实现服务的输出和输入功能，可以和Spring框架无缝集成。
Dubbo是一款高性能、轻量级的开源JAVA RPC框架，它提供了三大核心能力：面向接口的远程方法调用，智能容错和负载均衡，以及服务自动注册和发现。
- provider：暴露服务的服务提供方
- consumer：调用远程服务的服务消费方
- registry：服务注册于发现的注册中心
- monitor：统计服务调用次数和调用时间的监控中心
- container：服务运行容器
一、dubbo-provider
1、UserInfo
为什么要实现Serializable接口？当我们需要把对象的状态信息通过网络进行传输，或者需要将对象的状态信息持久化，以便将来使用时都需要把对象进行序列化。
@Data
public class UserInfo implements Serializable {
private String account;
private String password;
}
2、UserService
public interface UserService {
// 定义用户登录的api
UserInfo login(UserInfo user);
}
3、UserServiceImpl
@Component
@Service(interfaceClass = UserService.class)
public class UserServiceImpl implements UserService {
public UserInfo login(UserInfo user) {
UserInfo reUser = new UserInfo();
reUser.setAccount("登录的账号为:"+user.getAccount());
reUser.setPassword("登录的密码为:"+user.getPassword());
return reUser;
}
}
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
<?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> <relativePath/> <!-- lookup parent from repository --> </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> <!--Dubbo依赖--> <dependency> <groupId>com.alibaba.spring.boot</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>2.0.0</version> </dependency> <!--自动生成getter，setter，equals，hashCode和toString等等--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.20</version> <scope>provided</scope> </dependency> <!--Zookeeper客户端--> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.10</version> </dependency> <!--Zookeeper依赖，排除log4j避免依赖冲突--> <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: dubbo: application: name: dubbo-provider protocol: name: dubbo port: 20880 registry: address: zookeeper://127.0.0.1:2181
二、dubbo-consumer
1、UserController
@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> <relativePath/> <!-- lookup parent from repository --> </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> <!--依赖dubbo-provider服务提供者--> <dependency> <groupId>com.boot.dubbo.demo</groupId> <artifactId>dubbo-provider</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <!--Dubbo依赖--> <dependency> <groupId>com.alibaba.spring.boot</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>2.0.0</version> </dependency> <!--Zookeeper客户端--> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.10</version> </dependency> <!--Zookeeper依赖，排除log4j避免依赖冲突--> <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>
4、application.yml
spring: dubbo: application: name: dubbo-consumer protocol: name: dubbo port: 20880 registry: address: zookeeper://127.0.0.1:2181 server: port: 8081
三、Zookeeper安装配置
四、项目启动
五、查看Zookeeper服务注册情况
六、通过浏览器发送请求（dubbo-provider的服务注册到Zookeeper上，dubbo-consumer消费者可以调用注册的服务）。
到此，rpc远程调用服务通了！感兴趣的话可以去学习下。
原文链接：https://blog.csdn.net/sinat_27933301/article/details/100991670
