Dubbo是阿里巴巴公司開源的一個高性能優秀的服務框架，使得應用可通過高性能的 RPC 實現服務的輸出和輸入功能，可以和Spring框架無縫集成。
Dubbo是一款高性能、輕量級的開源JAVA RPC框架，它提供了三大核心能力：面向接口的遠程方法調用，智能容錯和負載均衡，以及服務自動注冊和發現。
- provider：暴露服務的服務提供方
- consumer：調用遠程服務的服務消費方
- registry：服務注冊于發現的注冊中心
- monitor：統計服務調用次數和調用時間的監控中心
- container：服務運行容器
一、dubbo-provider
1、UserInfo
為什么要實現Serializable接口？當我們需要把對象的狀態信息通過網絡進行傳輸，或者需要將對象的狀態信息持久化，以便將來使用時都需要把對象進行序列化。
@Data
public class UserInfo implements Serializable {
private String account;
private String password;
}
2、UserService
public interface UserService {
// 定義用戶登錄的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("登錄的賬號為:"+user.getAccount());
reUser.setPassword("登錄的密碼為:"+user.getPassword());
return reUser;
}
}
4、DubboProviderApplication
@SpringBootApplication
@EnableDubboConfiguration // 啟用dubbo自動配置
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依賴--> <dependency> <groupId>com.alibaba.spring.boot</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>2.0.0</version> </dependency> <!--自動生成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客戶端--> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.10</version> </dependency> <!--Zookeeper依賴，排除log4j避免依賴沖突--> <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服務器提供服務器接口
private UserService userService;
@GetMapping("/login")
public UserInfo login(UserInfo userInfo) {
return userService.login(userInfo);
}
}
2、DubboConsumerApplication
@SpringBootApplication
@EnableDubboConfiguration // 啟用dubbo自動配置
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> <!--依賴dubbo-provider服務提供者--> <dependency> <groupId>com.boot.dubbo.demo</groupId> <artifactId>dubbo-provider</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <!--Dubbo依賴--> <dependency> <groupId>com.alibaba.spring.boot</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>2.0.0</version> </dependency> <!--Zookeeper客戶端--> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.10</version> </dependency> <!--Zookeeper依賴，排除log4j避免依賴沖突--> <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安裝配置
「鏈接」
「鏈接」
「鏈接」
四、項目啟動
五、查看Zookeeper服務注冊情況
六、通過瀏覽器發送請求（dubbo-provider的服務注冊到Zookeeper上，dubbo-consumer消費者可以調用注冊的服務）。
到此，rpc遠程調用服務通了！感興趣的話可以去學習下。
原文鏈接：https://blog.csdn.net/sinat_27933301/article/details/100991670
