Dubbo學習筆記

Dubbo是什么

Dubbo是：

• 一款分布式服務框架
• 高性能和透明化的RPC遠程服務調用方案
• SOA服務治理方案

ZooKeeper服務注冊中心

下載 ZooKeeper ，地址 http://www.apache.org/dyn/closer.cgi/zookeeper
解壓，修改zoo_sample.cfg 重命名為zoo.cfg

tar zxvf zookeeper-3.4.8.tar.gz cd zookeeper-3.3.6/conf vim zoo.cfg

zoo.cfg主要配置

tickTime=2000 dataDir=/javaee/zookeeper/data dataLogDir=/javaee/zookeeper/log clientPort=2181

啟動zookeeper

cd zookeeper-3.3.6/bin ./zkServer.sh start

搭建Dubbo Admin，Dubbo的管理界面

從GitHub下載源碼，位置https://github.com/apache/incubator-dubbo-ops
只需要dubbo-admin項目，導入工程，打成war包放到tomcat下跑

創建服務提供者

創建SpringBoot項目
pom.xml如下：

<?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.qyluo</groupId><artifactId>dubbo-demo</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>dubbo-demo</name><description>Demo project for Spring Boot</description><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.0.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><!-- Spring Boot Dubbo 依賴 --><dependency><groupId>io.dubbo.springboot</groupId><artifactId>spring-boot-starter-dubbo</artifactId><version>1.0.0</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>dubbo</artifactId><version>2.5.6</version></dependency><!-- Spring Boot Web 依賴 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!-- Spring Boot Test 依賴 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><!-- https://mvnrepository.com/artifact/log4j/log4j --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency><!-- Junit --><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

application.properties

## Dubbo 服務提供者配置 spring.dubbo.application.name=provider spring.dubbo.registry.address=zookeeper://127.0.0.1:2181 spring.dubbo.protocol.name=dubbo spring.dubbo.protocol.port=20880 spring.dubbo.scan=com.qyluo.dubbodemo.service

實體類Person

package com.qyluo.dubbodemo.service;import com.qyluo.dubbodemo.entity.Person;public interface FindPerson {Person findPersonByName(String name); }

服務接口FindPerson

package com.qyluo.dubbodemo.service;import com.qyluo.dubbodemo.entity.Person;public interface FindPerson {Person findPersonByName(String name); }

FindPerson實現類

package com.qyluo.dubbodemo.service;import com.alibaba.dubbo.config.annotation.Service; import com.qyluo.dubbodemo.entity.Person;/*** @author qiyao.luo* @create 2018/7/27*/ @Service public class FindPersonImpl implements FindPerson {@Overridepublic Person findPersonByName(String name) {return new Person(name, 10);} }

啟動應用

創建服務消費者

SpringBoot項目
pom.xml和服務提供者依賴一樣
application.properties

server.port=8081## Dubbo 服務消費者配置 spring.dubbo.application.name=consumer spring.dubbo.registry.address=zookeeper://127.0.0.1:2181 spring.dubbo.scan=com.qyluo.dubbodemo.service spring.dubbo.protocol.name=dubbo

需要在和服務提供者接口相同的包路徑下創建FindPerson接口

package com.qyluo.dubbodemo.service;import com.qyluo.dubbodemo.entity.Person;public interface FindPerson {Person findPersonByName(String name); }

服務調用的類FindPersonConsumer

package com.qyluo.dubbodemo.service.impl;import com.alibaba.dubbo.config.annotation.Reference; import com.qyluo.dubbodemo.service.FindPerson; import org.springframework.stereotype.Service;/*** @author qiyao.luo* @create 2018/7/27*/ @Service public class FindPersonConsumer {@ReferenceFindPerson findPerson;public void printPerson() {String name = "xiaoli";System.out.println(findPerson.findPersonByName(name));} }

創建controller

package com.qyluo.dubbodemo.controller;import com.qyluo.dubbodemo.service.impl.FindPersonConsumer; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;/*** @author qiyao.luo* @create 2018/7/27*/ @RestController public class SampleController {@AutowiredFindPersonConsumer findPersonConsumer;@RequestMapping("/test")public void testDubbo() {findPersonConsumer.printPerson();} }

訪問http://localhost:8081/test

轉載于:https://www.cnblogs.com/kioluo/p/9516688.html

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