本文介绍了如何将Dubbo与Springboot进行整合，首先讲述了预备工作，包括项目背景和相关组件的部署。接着，详细说明了如何建立Consumer和Provider项目，分离服务接口与实现。在Provider项目中配置了pom文件和applicationProvider.xml，而在Consumer项目中同样配置并更改了端口。最后，展示了项目运行的效果，包括Consumer成功订阅Zookeeper服务以及用户查询功能的实现。
1. 预备工作
这篇是基于之前springboot+mybatis+shiro+redis等完成的，也就目录的置顶系列
同时关于Dubbo、Zookeeper和Dubbo-Admin部署可以看点击这里
2. 建立Consumer项目和Provider项目
将原有的项目中的service实现和所依赖的Dao层，Po实体抽出，当作Provider项目。
将原有的项目中的service实现删去，因为之后实现是由Provider项目实现的。
3. Provider项目代码
首先是pom代码
<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.kfit</groupId>
<artifactId>springboot-provider</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springboot-provider</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.7</java.version>
<mybatis-spring-boot>1.2.0</mybatis-spring-boot>
<mysql-connector>5.1.39</mysql-connector>
<spring-boot-starter-redis-version>1.3.2.RELEASE</spring-boot-starter-redis-version>
</properties>
<!--
spring boot 父节点依赖,
引入这个之后相关的引入就不需要添加version配置，
spring boot会自动选择最合适的版本进行添加。
-->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.RELEASE</version>
</parent>
<dependencies>
<!-- spring boot web支持：mvc,aop... -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--dubbo start-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.5.3</version>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.8</version>
<exclusions>
<exclusion>
<artifactId>activation</artifactId>
<groupId>javax.activation</groupId>
</exclusion>
<exclusion>
<artifactId>mail</artifactId>
<groupId>javax.mail</groupId>
</exclusion>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.6</version>
<exclusions>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<!-- dubbo end -->
<!-- Spring Boot Redis 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-redis</artifactId>
<version>${spring-boot-starter-redis-version}</version>
</dependency>
<!-- thmleaf模板依赖. -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>com.github.theborakompanioni</groupId>
<artifactId>thymeleaf-extras-shiro</artifactId>
<version>1.2.1</version>
</dependency>
<!-- shiro spring. -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- Spring Boot Mybatis 依赖 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>${mybatis-spring-boot}</version>
</dependency>
<!-- MySQL 连接驱动依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector}</version>
</dependency>
<!-- shiro ehcache -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-ehcache</artifactId>
<version>1.2.2</version>
</dependency>
</dependencies>
</project>在这里强调一下，有两种整合方式，xml/注解。但是我用注解方式试了很多次都失败，应该是包冲突问题。所以这里我用xml配置方式。
在Resource下创建一个applicationProvider.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd ">
<dubbo:application name="dubbo-demo" />
<!-- zookeeper注册中心 -->
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<dubbo:protocol name="dubbo" port="20880" />
<!-- 和本地bean一样实现服务 -->
<bean id="userInfoService" class="com.kfit.core.service.impl.UserInfoServiceImpl" />
<!-- 向注册中心注册暴漏服务地址,注册服务 -->
<dubbo:service interface="com.kfit.core.service.UserInfoService"
ref="userInfoService" executes="10" />
</beans>package com.kfit;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;
@SpringBootApplication
@ImportResource(
locations = {"classpath*:applicationProvider.xml"}
)
public class provider {
public static void main(String[] args) {
SpringApplication.run(provider.class, args);
}
}然后启动Provider，看是否注册到zookeeper（记得打开zookeeper，链接里有说明）可以打开Dubbo Admin界面，看服务者和消费者数量，如果成功的话继续配置Consumer。成功的Dubbo Admin界面显示如下
4. Consumer项目代码
pom代码和Provider一样。记得改下Consumer端口，避免和Provider重复
同样在Resource下创建applicationConsumer.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<dubbo:application name="consumer-of-dubbo-demo" />
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<dubbo:annotation package="com.kfit.*"/>
<!-- 向注册中心订阅服务 -->
<dubbo:reference id="userInfoService" interface="com.kfit.core.service.UserInfoService" />
</beans>
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;
@SpringBootApplication
@ImportResource(
locations = {"classpath*:applicationConsumer.xml"}
)
public class Consumer {
public static void main(String[] args) {
SpringApplication.run(Consumer.class, args);
}
}
获取bean和以前一样。
@Autowired
private UserInfoService userInfoService;注意Consumer的接口是保留的，接口的实现是从Provider拿的。如果不保留接口，就在pom里把Provider的jar打包进来。
启动之后，再观察Consumer是否从Zookeeper订阅，Dubbo-Admin如下，可以看到消费者订阅服务了。
5. 项目效果
首先是登陆界面
登陆进去之后选择用户查询，输入id，输出查询结果
看Provider后台，显示
INFO 3244 --- [:20880-thread-4] c.k.c.service.impl.UserInfoServiceImpl : 用户插入缓存 >> id: 1, username: admin,password: 123456再次查询，显示
INFO 3244 --- [:20880-thread-6] c.k.c.service.impl.UserInfoServiceImpl : 从缓存中获取了用户 >> id: 1, username: admin,password: 123456说明Consumer和Provider利用Zookeeper通信成功。
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