Dubbo（四）------Dubbo入门示例(基于属性配置)

迷南。 2023-06-25 06:21 47阅读 0赞

11

官方文档：http://dubbo.apache.org/en-us/docs/user/configuration/properties.html

父工程dubbo的依赖文件

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.yi</groupId>
  7.     <artifactId>dubbo</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  9.     <packaging>pom</packaging>
  11.     <modules>
  12.         <module>dubbo-api</module>
  13.         <module>dubbo-consumer</module>
  14.         <module>dubbo-provider</module>
  15.     </modules>
  17.     <properties>
  18.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  19.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  20.         <java.version>1.8</java.version>
  21.     </properties>
  23.     <parent>
  24.         <groupId>org.springframework.boot</groupId>
  25.         <artifactId>spring-boot-starter-parent</artifactId>
  26.         <version>2.1.4.RELEASE</version>
  27.         <relativePath/> <!-- lookup parent from repository -->
  28.     </parent>
  30.     <dependencies>
  31.         <dependency>
  32.             <groupId>org.springframework.boot</groupId>
  33.             <artifactId>spring-boot-starter-web</artifactId>
  34.         </dependency>
  36.         <dependency>
  37.             <groupId>org.springframework.boot</groupId>
  38.             <artifactId>spring-boot-starter-test</artifactId>
  39.             <scope>test</scope>
  40.             <exclusions>
  41.                 <exclusion>
  42.                     <groupId>org.junit.vintage</groupId>
  43.                     <artifactId>junit-vintage-engine</artifactId>
  44.                 </exclusion>
  45.             </exclusions>
  46.         </dependency>
  47.     </dependencies>
  49.     <build>
  50.         <plugins>
  51.             <plugin>
  52.                 <groupId>org.springframework.boot</groupId>
  53.                 <artifactId>spring-boot-maven-plugin</artifactId>
  54.             </plugin>
  55.             <!-- JDK版本 -->
  56.             <plugin>
  57.                 <artifactId>maven-compiler-plugin</artifactId>
  58.                 <configuration>
  59.                     <source>1.8</source>
  60.                     <target>1.8</target>
  61.                 </configuration>
  62.             </plugin>
  64.         </plugins>
  66.     </build>
  68. </project>

dubbo-api 依赖文件

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.yi</groupId>
  7.     <artifactId>dubbo-api</artifactId>
  8.     <version>1.0-SNAPSHOT</version>
  10.     <properties>
  11.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  12.     </properties>
  14.     <build>
  15.         <plugins>
  16.             <plugin>
  17.                 <groupId>org.springframework.boot</groupId>
  18.                 <artifactId>spring-boot-maven-plugin</artifactId>
  19.             </plugin>
  20.             <!-- JDK版本 -->
  21.             <plugin>
  22.                 <artifactId>maven-compiler-plugin</artifactId>
  23.                 <configuration>
  24.                     <source>1.8</source>
  25.                     <target>1.8</target>
  26.                 </configuration>
  27.             </plugin>
  29.         </plugins>
  31.     </build>
  33. </project>

dubbo-provider 提供方依赖文件

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <groupId>com.yi</groupId>
  7.     <artifactId>dubbo-provider</artifactId>
  8.     <version>0.0.1-SNAPSHOT</version>
  10.     <properties>
  11.         <java.version>1.8</java.version>
  12.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  13.     </properties>
  15.     <parent>
  16.         <groupId>com.yi</groupId>
  17.         <artifactId>dubbo</artifactId>
  18.         <version>0.0.1-SNAPSHOT</version>
  19.     </parent>
  21.     <dependencies>
  23.         <!--引入公共的api-->
  24.         <dependency>
  25.             <groupId>com.yi</groupId>
  26.             <artifactId>dubbo-api</artifactId>
  27.             <version>1.0-SNAPSHOT</version>
  28.         </dependency>
  30.         <!--引入springboot-->
  31.        <!-- <dependency>
  32.             <groupId>org.springframework.boot</groupId>
  33.             <artifactId>spring-boot-starter</artifactId>
  34.             <version>2.1.0.RELEASE</version>
  35.         </dependency>-->
  37.         <!--zookeeper 注册中心客户端引入 使用的是curator客户端 -->
  38.         <dependency>
  39.             <groupId>org.apache.dubbo</groupId>
  40.             <artifactId>dubbo-dependencies-zookeeper</artifactId>
  41.             <version>2.7.4.1</version>
  42.             <type>pom</type>
  43.             <exclusions>
  44.                 <exclusion>
  45.                     <groupId>org.slf4j</groupId>
  46.                     <artifactId>slf4j-log4j12</artifactId>
  47.                 </exclusion>
  48.             </exclusions>
  49.         </dependency>
  51.         <!-- dubbo 2.7.x引入-->
  52.         <dependency>
  53.             <groupId>org.apache.dubbo</groupId>
  54.             <artifactId>dubbo-spring-boot-starter</artifactId>
  55.             <version>2.7.4.1</version>
  56.         </dependency>
  58.         <dependency>
  59.             <groupId>org.springframework.boot</groupId>
  60.             <artifactId>spring-boot-autoconfigure</artifactId>
  61.             <version>2.1.7.RELEASE</version>
  62.             <scope>compile</scope>
  63.         </dependency>
  65.     </dependencies>
  68.     <build>
  69.         <plugins>
  70.             <plugin>
  71.                 <groupId>org.springframework.boot</groupId>
  72.                 <artifactId>spring-boot-maven-plugin</artifactId>
  73.             </plugin>
  74.         </plugins>
  75.     </build>
  77. </project>

dubbo-consumer 依赖文件

  1. <?xml version="1.0" encoding="UTF-8"?>
  3. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>com.yi</groupId>
  8.     <artifactId>dubbo-consumer</artifactId>
  9.     <version>0.0.1-SNAPSHOT</version>
  10.     <packaging>jar</packaging>
  13.     <parent>
  14.         <groupId>com.yi</groupId>
  15.         <artifactId>dubbo</artifactId>
  16.         <version>0.0.1-SNAPSHOT</version>
  17.     </parent>
  19.     <properties>
  20.         <java.version>1.8</java.version>
  21.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  22.     </properties>
  24.     <dependencies>
  26.         <!--引入公共的api-->
  27.         <dependency>
  28.             <groupId>com.yi</groupId>
  29.             <artifactId>dubbo-api</artifactId>
  30.             <version>1.0-SNAPSHOT</version>
  31.         </dependency>
  33.         <!--<!–引入springboot–>
  34.         <dependency>
  35.             <groupId>org.springframework.boot</groupId>
  36.             <artifactId>spring-boot-starter</artifactId>
  37.             <version>2.1.0.RELEASE</version>
  38.         </dependency>-->
  40.         <!--zookeeper 注册中心客户端引入 使用的是curator客户端 -->
  41.         <dependency>
  42.             <groupId>org.apache.dubbo</groupId>
  43.             <artifactId>dubbo-dependencies-zookeeper</artifactId>
  44.             <version>2.7.4.1</version>
  45.             <type>pom</type>
  46.             <exclusions>
  47.                 <exclusion>
  48.                     <groupId>org.slf4j</groupId>
  49.                     <artifactId>slf4j-log4j12</artifactId>
  50.                 </exclusion>
  51.             </exclusions>
  52.         </dependency>
  53.         <!-- dubbo 2.7.x引入-->
  54.         <dependency>
  55.             <groupId>org.apache.dubbo</groupId>
  56.             <artifactId>dubbo-spring-boot-starter</artifactId>
  57.             <version>2.7.4.1</version>
  58.         </dependency>
  60.     </dependencies>
  62.     <build>
  63.         <plugins>
  64.             <plugin>
  65.                 <groupId>org.springframework.boot</groupId>
  66.                 <artifactId>spring-boot-maven-plugin</artifactId>
  67.             </plugin>
  68.         </plugins>
  69.     </build>
  70. </project>

dubbo-api
在这里插入图片描述

  1. package com.yi;
  3. /**
  4.  * 接口
  5.  */
  6. public interface TestService {
  8.     String sayHello(String word);
  9. }

dubbo-provider

  1. package com.yi.service.impl;
  3. import com.yi.TestService;
  4. import org.apache.dubbo.config.annotation.Service;
  6. @Service(version = "1.0.0")
  7. public class TestServiceImpl implements TestService {
  9.     @Override
  10.     public String sayHello(String word) {
  11.         return word;
  12.     }
  13. }
  15. package com.yi;
  17. import org.springframework.boot.SpringApplication;
  18. import org.springframework.boot.autoconfigure.SpringBootApplication;
  20. @SpringBootApplication
  21. public class ApplicationProvider {
  22.     public static void main(String[] args) {
  23.         SpringApplication.run(ApplicationProvider.class, args);
  24.         System.out.println("dubbo_provider 已启动！");
  25.     }
  26. }
  28. # Spring boot application
  29. spring.application.name=dubbo-provider
  30. # Base packages to scan Dubbo Component: @org.apache.dubbo.config.annotation.Service
  31. dubbo.scan.base-packages=com.yi.service
  32. # Dubbo Application
  33. ## The default value of dubbo.application.name is ${spring.application.name}
  34. dubbo.application.name=${spring.application.name}
  35. # Dubbo Protocol
  36. dubbo.protocol.name=dubbo
  37. dubbo.protocol.port=20880
  38. ## Dubbo Registry
  39. dubbo.registry.address=zookeeper://127.0.0.1:2181
  40. server.port=8083
  41. #如果有Can't assign address异常需要加vm参数：
  42. #-Djava.net.preferIPv4Stack=true
  44. log4j.rootLogger = INFO, stdout, logfile
  45. #日志输出到控制台
  46. log4j.appender.stdout = org.apache.log4j.ConsoleAppender
  47. log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
  49. #日志输出到文件
  50. log4j.appender.logfile = org.apache.log4j.DailyRollingFileAppender
  51. #${webapp.root}WEB-INF/logs/log4j.log 日志文件存放在tomcat编译项目web-inf/log目录下
  52. log4j.appender.logfile.File = ${webapp.root}WEB-INF/logs/log4j.log
  54. #是否追加写进文件
  55. log4j.appender.logfile.Append = true   
  56. #输出DEBUG级别日志到文件中
  57. log4j.appender.logfile.Threshold = DEBUG    
  58. log4j.appender.logfile.layout = org.apache.log4j.PatternLayout
  59. log4j.appender.logfile.layout.ConversionPattern = %d [%t] %-5p %c - %m%n

dubbo-consumer

  1. package com.yi.controller;
  3. import com.yi.TestService;
  4. import org.apache.dubbo.config.annotation.Reference;
  5. import org.springframework.web.bind.annotation.GetMapping;
  6. import org.springframework.web.bind.annotation.RestController;
  8. @RestController
  9. public class TestController {
  11.     @Reference(version = "1.0.0")
  12.     private TestService service;
  14.     @GetMapping("sayHello")
  15.     public String sayHello() {
  16.         return service.sayHello("hello wrold!");
  17.     }
  19. }
  21. package com.yi;
  23. import org.springframework.boot.SpringApplication;
  24. import org.springframework.boot.autoconfigure.SpringBootApplication;
  26. @SpringBootApplication
  27. public class ApplicationConsumer {
  28.     public static void main(String[] args) {
  29.         SpringApplication.run(ApplicationConsumer.class, args);
  30.         System.out.println("dubbo_consumer 已启动！");
  32.     }
  33. }
  35. spring.application.name=dubbo_consumer
  36. dubbo.registry.address=zookeeper://127.0.0.1:2181
  37. server.port=8082
  38. #如果有Can't assign address异常需要加vm参数：
  39. #-Djava.net.preferIPv4Stack=true

启动服务之前（先启动zookeeper，先启动zookeeper，先启动zookeeper）

然后依次启动dubbo-provider 、dubbo-consumer

在这里插入图片描述

调用：http://127.0.0.1:8082/sayHello
在这里插入图片描述

项目代码实例下载

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