springboot接入dubbo-nacos注册中心
项目结构：
pro-parent
parent.pom
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| <?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">
<artifactId>pro-parent</artifactId>
<groupId>removeif.io.java</groupId>
<version>1.0-SNAPSHOT</version>
<modelVersion>4.0.0</modelVersion>
<packaging>pom</packaging>
<modules>
<module>service-api</module>
<module>service-provider</module>
<module>service-consumer</module>
</modules>
</project>
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暴露服务接口api
service-api.pom
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| <?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">
<parent>
<artifactId>pro-parent</artifactId>
<groupId>removeif.io.java</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>service-api</artifactId>
</project>
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service-api.class
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| package io.github.removeif.springboot.api;
import io.github.removeif.springboot.dto.UserDTO;
public interface UserRpcService {
UserDTO get(Integer id);
}
package io.github.removeif.springboot.dto;
import java.io.Serializable;
public class UserDTO implements Serializable {
private Integer id;
private String name;
private Integer gender;
public Integer getId() {
return id;
}
public UserDTO setId(Integer id) {
this.id = id;
return this;
}
public String getName() {
return name;
}
public UserDTO setName(String name) {
this.name = name;
return this;
}
public Integer getGender() {
return gender;
}
public UserDTO setGender(Integer gender) {
this.gender = gender;
return this;
}
}
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服务提供方service-provider
service-provider.pom
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| <?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">
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
<relativePath/>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>service-provider</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<artifactId>service-api</artifactId>
<groupId>removeif.io.java</groupId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-dubbo</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
</dependencies>
</project>
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service-provider.yaml
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| spring:
application:
name: user-service-provider
dubbo:
application:
name: user-service-provider
registry:
address: nacos://127.0.0.1:8848
group: dev
parameters[namespace]: dev
protocol:
port: -1
name: dubbo
provider:
timeout: 1000
UserRpcService:
version: 1.0.0
scan:
base-packages: io.github.removeif.springboot.service
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group以及namespace对应nacos中结构：
service-provider.class
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| package io.github.removeif.springboot.service;
import io.github.removeif.springboot.api.UserRpcService;
import io.github.removeif.springboot.dto.UserDTO;
import org.apache.dubbo.config.annotation.DubboService;
@DubboService(version = "${dubbo.provider.UserRpcService.version}")
public class UserRpcServiceImpl implements UserRpcService {
@Override
public UserDTO get(Integer id) {
return new UserDTO().setId(id)
.setName("没有昵称：" + id)
.setGender(id % 2 + 1);
}
}
package io.github.removeif.springboot;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@EnableDubbo
public class ProviderApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class, args);
}
}
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消费方service-consumer
service-consumer.pom
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| <?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">
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
<relativePath/>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>service-consumer</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<artifactId>service-api</artifactId>
<groupId>removeif.io.java</groupId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-dubbo</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
</dependencies>
</project>
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service-consumer.ymal
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| spring:
application:
name: user-service-consumer
dubbo:
application:
name: user-service-consumer
registry:
address: nacos://127.0.0.1:8848
group: dev
parameters[namespace]: dev
consumer:
timeout: 1000
UserRpcService:
version: 1.0.0
protocol:
port: -1
name: dubbo
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service-consumer.class
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| package io.github.removeif.springboot;
import io.github.removeif.springboot.api.UserRpcService;
import io.github.removeif.springboot.dto.UserDTO;
import org.apache.dubbo.config.annotation.DubboReference;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.stereotype.Component;
@SpringBootApplication
@EnableDubbo
public class ConsumerApplication {
public static void main(String[] args) {
ConfigurableApplicationContext context = SpringApplication.run(ConsumerApplication.class, args);
}
@Component
public class UserRpcServiceTest implements CommandLineRunner {
private final Logger logger = LoggerFactory.getLogger(getClass());
@DubboReference(version = "${dubbo.consumer.UserRpcService.version}")
private UserRpcService userRpcService;
@Override
public void run(String... args) throws Exception {
UserDTO user = userRpcService.get(1);
logger.info("[run][发起一次 Dubbo RPC 请求，获得用户为({})", user);
}
}
}
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启动provider，在启动consumer后可以看到控制台
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| 2020-12-19 11:36:49.219 INFO 16272 --- [ main] c.a.c.n.registry.NacosServiceRegistry : nacos registry, DEFAULT_GROUP user-service-consumer 192.168.88.1:20881 register finished
2020-12-19 11:36:49.228 INFO 16272 --- [ main] s.ConsumerApplication$UserRpcServiceTest : [run][发起一次 Dubbo RPC 请求，获得用户为(io.github.removeif.springboot.dto.UserDTO@79696332)
2020-12-19 11:36:49.231 INFO 16272 --- [ main] c.a.n.client.config.impl.ClientWorker : [fixed-localhost_8848] [subscribe] user-service-consumer+DEFAULT_GROUP
2020-12-19 11:36:49.231 INFO 16272 --- [ main] c.a.nacos.client.config.impl.CacheData : [fixed-localhost_8848] [add-listener] ok, tenant=, dataId=user-service-consumer, group=DEFAULT_GROUP, cnt=1
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