spring cloud 之 dubbo nacos整合
整体思路：
+ 搭建本地nacos服务，详见docker安装nacos_xgjj68163的博客-CSDN博客
+ 共三个工程，生产者服务、消费者服务、生产者和消费者共同依赖的接口工程（打成jar，供生产者和消费者依赖）；
+ 生产者注册服务到nacos，消费者调用nacos上的生产者服务；
目录
1. 共同依赖的接口服务搭建
1.1 pom
1.2 公共接口
1.3 maven install ， 将可依赖jar包安装到本地仓库
2. 生产者服务搭建
2.1 生产者服务pom
2. 配置文件及注册服务
3. 消费者服务搭建
3.1 消费者服务pom
3.2 nacos及dubbo配置
3.3 调用dubbo服务
4. 测试
4.1 生产者服务注册成功
4.2 消费者服务注册成功
4.3 测试controller，消费者调用生成者服务
1. 共同依赖的接口服务搭建
1.1 pom
注意：
其中build plugins spring-boot-maven-plugin插件，classifier为exec，表示构建可依赖的jar包及可启动的jar包
4.0.0
hj.example
springboot-provider
0.0.1-SNAPSHOT
sample-api
0.0.1-SNAPSHOT
sample-api
sample-api
1.8
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-maven-plugin
exec
1.2 公共接口
package hj.example.sample;
public interface IHelloService {
String sayHello(String name);
}
1.3 maven install ， 将可依赖jar包安装到本地仓库
2. 生产者服务搭建
2.1 生产者服务pom
包括4个依赖：接口依赖sample-api、nacos配置中心依赖spring-cloud-starter-alibaba-nacos-config、nacos注册中心依赖spring-cloud-starter-alibaba-nacos-discovery，spring-cloud dubbo依赖spring-cloud-starter-dubbo
4.0.0
hj.example
springboot-provider
0.0.1-SNAPSHOT
sample-provider
0.0.1-SNAPSHOT
jar
sample-provider
sample-provider
1.8
org.springframework.boot
spring-boot-starter-web
hj.example
sample-api
0.0.1-SNAPSHOT
com.alibaba.cloud
spring-cloud-starter-alibaba-nacos-discovery
2.2.5.RELEASE
com.alibaba.cloud
spring-cloud-starter-alibaba-nacos-config
2.2.5.RELEASE
com.alibaba.cloud
spring-cloud-starter-dubbo
2.2.5.RELEASE
org.springframework.boot
spring-boot-maven-plugin
exec
2. 配置文件及注册服务
通过@DubboService注解，将dubbo服务注册到nacos上；
dubbo配置，如果不在bootstrap.properties上配置spring.cloud.nacos.config.prefix，默认连接nacos配置中心的dubbo.properties配置文件；
程序优先读取bootstrap.properties配置文件，内容为：
spring.cloud.nacos.config.server-addr=127.0.0.1:8948
spring.cloud.nacos.config.username=nacos
spring.cloud.nacos.config.password=
spring.cloud.nacos.config.enabled=falseapplication.propertes文件内容为：
spring.application.name=sample-provider
server.port=8089
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8948
spring.cloud.nacos.discovery.username=nacos
spring.cloud.nacos.discovery.password=
spring.cloud.nacos.discovery.service=sample-providernacos上dubbo.properties文件内容：
启动类：
package hj.example.sampleprovider;
import org.apache.dubbo.config.spring.context.annotation.DubboComponentScan;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.ConfigurableApplicationContext;
@DubboComponentScan
@EnableDiscoveryClient
@SpringBootApplication
@EnableDubbo(scanBasePackages="hj.example.sampleprovider.sample")
public class SampleProviderApplication {
public static void main(String[] args) {
// Main.main(args);
ConfigurableApplicationContext context = SpringApplication.run(SampleProviderApplication.class, args);
String info = context.getEnvironment().getProperty("info");
System.out.println("==========" + info);
}
}
注册服务类：
package hj.example.sampleprovider.sample;
import hj.example.sample.IHelloService;
import org.apache.dubbo.config.annotation.DubboService;
import org.springframework.beans.factory.annotation.Value;
@DubboService
public class HelloServiceImpl implements IHelloService {
@Value("${dubbo.application.name}")
private String serviceName;
public String sayHello(String name) {
return String.format("[%s]: Hello, %s", serviceName, name);
}
}
3. 消费者服务搭建
3.1 消费者服务pom
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.2.10.RELEASE
hj.example
sample-consumer
0.0.1-SNAPSHOT
sample-consumer
sample-consumer
1.8
org.springframework.boot
spring-boot-starter
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-test
test
hj.example
sample-api
0.0.1-SNAPSHOT
com.alibaba.cloud
spring-cloud-starter-alibaba-nacos-discovery
2.2.5.RELEASE
com.alibaba.cloud
spring-cloud-starter-alibaba-nacos-config
2.2.5.RELEASE
com.alibaba.cloud
spring-cloud-starter-dubbo
2.2.5.RELEASE
org.springframework.boot
spring-boot-maven-plugin
exec
3.2 nacos及dubbo配置
配置中心配置bootstrap.properties及nacos配置中心文件dubboConsumer.properties
bootstrap.properties
spring.cloud.nacos.config.server-addr=127.0.0.1:8948
spring.cloud.nacos.config.username=nacos
spring.cloud.nacos.config.password=
spring.cloud.nacos.config.prefix=dubboConsumer.propertiesdubboConsumer.properties
3.3 调用dubbo服务
使用注解@DubboReference调用dubbo服务，测试controller
package hj.example.sampleconsumer.controller;
import hj.example.sample.IHelloService;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class TestController {
@DubboReference
private IHelloService iHelloService;
@RequestMapping("/test")
public ResponseEntity启动类：
package hj.example.sampleconsumer;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDubbo
@EnableDiscoveryClient
public class SampleConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(SampleConsumerApplication.class, args);
}
}
4. 测试
4.1 生产者服务注册成功
4.2 消费者服务注册成功
4.3 测试controller，消费者调用生成者服务
