add dubbo_v3.x demo #48

sdk-examples/java/dubbo_v3.x/.gitignore

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+tmp/
+

sdk-examples/java/dubbo_v3.x/README.md

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+
+# r-nacos dubbo_v3.x 说明
+
+本样例基于dubbo v3.2.14版本，需要jdk 17以上版本。
+
+
+
+## 使用方式
+
+1. 启动r-nacos
+2. 切换到dubbo_v3.x样例目录
+3. 本地打包 `mvn package` (如果有问题可以用 `mvn install` )
+4. 运行service: `java -jar dubbo-demo-service/target/dubbo-demo-service-1.0-SNAPSHOT.jar`
+5. 运行api: `java -jar dubbo-demo-api/target/dubbo-demo-api-1.0-SNAPSHOT.jar`
+6. 访问api: `curl "http://127.0.0.1:20785/hi?name=r-nacos"`
+
+```sh
+curl "http://127.0.0.1:20785/hi?name=r-nacos"
+[dubbo-demo-service] : Hello, r-nacos
+```
+
+
+

sdk-examples/java/dubbo_v3.x/dubbo-demo-api/.gitignore

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+target/
+

sdk-examples/java/dubbo_v3.x/dubbo-demo-api/pom.xml

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+<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>
+
+  <parent>
+      <groupId>com.rnacos.demo</groupId>
+      <artifactId>dubbo-demo-parent</artifactId>
+      <version>1.0-SNAPSHOT</version>
+      <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <artifactId>dubbo-demo-api</artifactId>
+  <name>dubbo-demo-api</name>
+  <packaging>jar</packaging>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.rnacos.demo</groupId>
+      <artifactId>dubbo-demo-common</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.alibaba.nacos</groupId>
+      <artifactId>nacos-client</artifactId>
+    </dependency>
+     <!--
+    -->
+
+    <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-log4j2</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-nacos-spring-boot-starter</artifactId>
+        </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+        <plugin>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-maven-plugin</artifactId>
+        </plugin>
+    </plugins>
+  </build>
+</project>
+
+

sdk-examples/java/dubbo_v3.x/dubbo-demo-api/src/main/java/com/rnacos/demo/App.java

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+package com.rnacos.demo;
+
+import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+
+/**
+ *
+ */
+@SpringBootApplication
+@EnableDubbo
+public class App 
+{
+    public static void main(String[] args) {
+        SpringApplication.run(App.class,args);
+    }
+}

sdk-examples/java/dubbo_v3.x/dubbo-demo-api/src/main/java/com/rnacos/demo/foo/api/FooController.java

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+package com.rnacos.demo.foo.api; 
+
+import com.rnacos.demo.foo.DemoService;
+
+import org.apache.dubbo.config.annotation.DubboReference;
+import org.springframework.stereotype.Controller;
+import org.springframework.stereotype.Component;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@Component
+@RestController
+public class FooController {
+
+    @DubboReference
+    private DemoService demoService;
+
+    @GetMapping("/hi") 
+    public String hello(@RequestParam("name")String name){
+      if(name==null){
+        name = "default";
+      }
+      return demoService.sayHello(name);
+    }
+}
+

sdk-examples/java/dubbo_v3.x/dubbo-demo-api/src/main/resources/application.yml

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+server:
+    port: 20785
+spring:
+  application:
+    name: dubbo-demo-api
+
+dubbo:
+  application:
+    logger: slf4j
+    name: ${spring.application.name}
+    qos-enable: false
+    check-serializable: false
+  registry:
+    address: nacos://${nacos.address:127.0.0.1}:8848?username=nacos&password=nacos
+  protocol:
+    port: 20885
+    name: dubbo
+

sdk-examples/java/dubbo_v3.x/dubbo-demo-common/.gitignore

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+target/
+

sdk-examples/java/dubbo_v3.x/dubbo-demo-common/pom.xml

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+<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>
+
+  <parent>
+      <groupId>com.rnacos.demo</groupId>
+      <artifactId>dubbo-demo-parent</artifactId>
+      <version>1.0-SNAPSHOT</version>
+      <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <artifactId>dubbo-demo-common</artifactId>
+  <name>dubbo-demo-common</name>
+  <packaging>jar</packaging>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>3.8.1</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+</project>

sdk-examples/java/dubbo_v3.x/dubbo-demo-common/src/main/java/com/rnacos/demo/App.java

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+package com.rnacos.demo;
+
+/**
+ * Hello world!
+ *
+ */
+public class App 
+{
+    public static void main( String[] args )
+    {
+        System.out.println( "Hello World!" );
+    }
+}

sdk-examples/java/dubbo_v3.x/dubbo-demo-common/src/main/java/com/rnacos/demo/foo/DemoService.java

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+package com.rnacos.demo.foo;
+
+public interface DemoService {
+    String sayHello(String name);
+}

sdk-examples/java/dubbo_v3.x/dubbo-demo-service/.gitignore

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+target/
+

sdk-examples/java/dubbo_v3.x/dubbo-demo-service/pom.xml

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+<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>
+
+  <parent>
+      <groupId>com.rnacos.demo</groupId>
+      <artifactId>dubbo-demo-parent</artifactId>
+      <version>1.0-SNAPSHOT</version>
+      <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <artifactId>dubbo-demo-service</artifactId>
+  <name>dubbo-demo-service</name>
+  <packaging>jar</packaging>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.rnacos.demo</groupId>
+      <artifactId>dubbo-demo-common</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.alibaba.nacos</groupId>
+      <artifactId>nacos-client</artifactId>
+    </dependency>
+    <!--
+    -->
+
+    <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-log4j2</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-nacos-spring-boot-starter</artifactId>
+        </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+        <plugin>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-maven-plugin</artifactId>
+        </plugin>
+    </plugins>
+  </build>
+</project>
+

sdk-examples/java/dubbo_v3.x/dubbo-demo-service/src/main/java/com/rnacos/demo/App.java

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+package com.rnacos.demo;
+
+import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+
+/**
+ *
+ */
+@SpringBootApplication
+@EnableDubbo
+public class App 
+{
+    public static void main(String[] args) {
+        SpringApplication.run(App.class,args);
+    }
+}

sdk-examples/java/dubbo_v3.x/dubbo-demo-service/src/main/java/com/rnacos/demo/foo/service/impl/DemoServiceImpl.java

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+package com.rnacos.demo.foo.service.impl;
+
+import com.rnacos.demo.foo.DemoService;
+import org.apache.dubbo.config.annotation.DubboService;
+import org.springframework.beans.factory.annotation.Value;
+
+
+@DubboService
+public class DemoServiceImpl implements DemoService {
+  @Value("${spring.application.name}")
+  private String serviceName;
+
+  public String sayHello(String name) {
+    //return String.format("Hello, %s",name);
+    return String.format("[%s] : Hello, %s",serviceName,name);
+  }
+}

sdk-examples/java/dubbo_v3.x/dubbo-demo-service/src/main/resources/application.yml

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+server:
+    port: 20784
+spring:
+  application:
+    name: dubbo-demo-service
+
+dubbo:
+  application:
+    logger: slf4j
+    name: ${spring.application.name}
+    qos-enable: false
+    check-serializable: false
+  registry:
+    address: nacos://${nacos.address:127.0.0.1}:8848?username=nacos&password=nacos
+  protocol:
+    port: 20884
+    name: dubbo