一、什么是Spring Boot ？

現(xiàn)階段的 Spring Boot 可謂是太火了，為什么呢？因?yàn)槭褂梅奖恪⑴渲煤?jiǎn)潔、上手快速，那么它是什么？從官網(wǎng)上我們可以看到，它是 Spring 開源組織下的一個(gè)子項(xiàng)目，主要簡(jiǎn)化了 Spring 繁重的配置，而且 Spring Boot 內(nèi)嵌了各種 Servlet 容器，如：Tomcat、Jetty 等

官方網(wǎng)站：http://projects.spring.io/spring-boot/GitHub源碼：https://github.com/spring-projects/spring-boot

二、Spring Boot 的優(yōu)勢(shì) ？

1、獨(dú)立運(yùn)行：不需要在用 tomcat 等容器運(yùn)行。2、簡(jiǎn)化配置：不需要在像 Spring mvc 那樣配置很多的xml了；3、自動(dòng)配置：根據(jù)包路徑自動(dòng)配置 bean4、應(yīng)用監(jiān)控：Spring Boot 提供監(jiān)控服務(wù)

三、項(xiàng)目創(chuàng)建

1、創(chuàng)建提供者

后面點(diǎn)擊 finish，創(chuàng)建完畢，然后刪掉多余包，使得項(xiàng)目結(jié)構(gòu)如下圖：

右擊項(xiàng)目，新建一個(gè)提供者對(duì)外提供服務(wù)的模塊 qbs-facade

然后再按照該模式創(chuàng)建一個(gè) qbs-web 模塊（這里就不介紹了）最終的項(xiàng)目結(jié)構(gòu)如下圖所示：

修改 主 pom 文件

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><packaging>pom</packaging><groupId>com.btd</groupId><artifactId>qbs</artifactId><version>0.0.1-SNAPSHOT</version><name>qbs</name><modules><module>qbs-facade</module><module>qbs-api</module></modules><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.6.RELEASE</version><relativePath/></parent><properties><java.version>1.8</java.version><dubbo.version>2.7.1</dubbo.version></properties><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

3、編寫 facade

SayFacade.java

package com.btd.qbs.facade;public interface SayFacade {String say(String context); }

facade 模塊的 xml 文件，它只是對(duì)外提供一下接口的，所以不需要其它東西

<?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.btd</groupId><artifactId>qbs-facade</artifactId><version>0.0.1-SNAPSHOT</version><name>qbs-facade</name><packaging>jar</packaging></project>

4、組織api模塊，實(shí)際接口的實(shí)現(xiàn)

先看 pom.xml 文件

<?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>qbs</artifactId><groupId>com.btd</groupId><version>0.0.1-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>qbs-api</artifactId><packaging>jar</packaging><dependencies><!-- spring boot 相關(guān) start --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot</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-test</artifactId><scope>test</scope></dependency><!-- spring boot 相關(guān) end --><!--dubbo 相關(guān)--><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>${dubbo.version}</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo</artifactId><version>${dubbo.version}</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-dependencies-zookeeper</artifactId><version>${dubbo.version}</version><type>pom</type></dependency><!-- dubbo 相關(guān)依賴 end--><dependency><groupId>com.btd</groupId><artifactId>qbs-facade</artifactId><version>0.0.1-SNAPSHOT</version><scope>compile</scope></dependency></dependencies></project>

application.properties 文件

spring.application.name=qbs-providerserver.port=11222dubbo.application.id=${spring.application.name} dubbo.application.name=${spring.application.name} dubbo.protocol.port = 28820 dubbo.protocol.name=${spring.application.name}# zk注冊(cè)中心地址 dubbo.registry.address=zookeeper://127.0.0.1:2181# 提供者配置 dubbo.provider.name=dubbo dubbo.provider.protocol=dubbo dubbo.provider.version=1.0.0 dubbo.provider.timeout=30000

SayFacadeImpl.java

package com.btd.qbs.service;import com.btd.qbs.facade.SayFacade; import org.apache.dubbo.config.annotation.Service;@Service public class SyaFacadeImpl implements SayFacade {@Overridepublic String say(String context) {return "小肥羊?qū)δ阏f："+context;} }

啟動(dòng)文件 Application.java

package com.btd.qbs;import org.apache.dubbo.config.spring.context.annotation.EnableDubbo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;@EnableDubbo @SpringBootApplication(exclude = MongoAutoConfiguration.class) public class Application {public static void main(String[] args) {SpringApplication.run(Application.class);} }

OK ,到這里來說，我們的提供者就完成了，啟動(dòng)項(xiàng)目，然后我們看看 dubbo-admin

這里要注意，因?yàn)槲覀兊?facade 是對(duì)外需要映入的，所以我們打個(gè) jar 包

打完包后，我們會(huì)得到一個(gè) jar 文件

2、建立消費(fèi)者

引入我們打的 jar 包

配置文件：

spring.application.name=qbs-consumerserver.port=11121 dubbo.application.id=${spring.application.name} dubbo.application.name=${spring.application.name} dubbo.protocol.port=28820 dubbo.protocol.name=dubbo# zk注冊(cè)中心地址 dubbo.registry.address=zookeeper://172.25.37.130:2181# 消費(fèi)者配置 dubbo.consumer.version=1.0.0 dubbo.consumer.check=false dubbo.consumer.timeout=8000

pom.xml 文件

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.6.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.btd.abs</groupId><artifactId>qbs-consumer</artifactId><version>0.0.1-SNAPSHOT</version><name>qbs-consumer</name><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version><dubbo.version>2.7.1</dubbo.version></properties><dependencies><!-- spring boot 相關(guān) start --><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-test</artifactId><scope>test</scope></dependency><!-- spring boot 相關(guān) end --><!--dubbo 相關(guān)--><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>${dubbo.version}</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo</artifactId><version>${dubbo.version}</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-dependencies-zookeeper</artifactId><version>${dubbo.version}</version><type>pom</type></dependency><!-- dubbo 相關(guān)依賴 end--><!-- 基礎(chǔ)依賴 start --><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.59</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><scope>provided</scope></dependency><!-- 基礎(chǔ)依賴 end --></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build> </project>

Application.java 文件

package com.btd.abs;import org.apache.dubbo.config.spring.context.annotation.EnableDubbo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;@EnableDubbo @SpringBootApplication(exclude = MongoAutoConfiguration.class) public class Application {public static void main(String[] args) {SpringApplication.run(Application.class, args);} }

DbsController.java 文件

package com.btd.abs.controller;import com.btd.qbs.facade.SayFacade; import org.apache.dubbo.config.annotation.Reference; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController;@RestController @RequestMapping("/qbs") public class DbsController {@Referenceprivate SayFacade sayFacade;@GetMapping("/say")@ResponseBodypublic String say(String context) {return sayFacade.say(context);} }

最后調(diào)用結(jié)果：http://localhost:11121/qbs/say?context=asde3

好了，這是spring boot 集成 dubbo的一整套商業(yè)使用的代碼事例，按著從上到下的操作，是完全OK的；

有意向的可以關(guān)注下我公眾號(hào)哦！！！ 剛開的

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