Dubbo学习之路（二）：Dubbo的接入流程（内附demo地址）

Dubbo的接入流程

前提：自学Dubbo，下面是自己搭建Demo的过程，记录一下，具体代码在github上：dubbo-demo

一.整体环境

1.IDE开发工具：IntelliJ IDEA 14.1.4

2.JDK：1.7版本

3.Maven：apache-maven-3.2.3

4.Springboot：1.5.11.RELEASE

5.Dubbo：2.5.3

6.Zookeeper：3.4.9

二：整体架构（包结构）

三.父pom.xml：引入公共jar包（springboot,dubbo,zookeeper）

<dependencies>
        <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>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version> 3.4.9</version>
        </dependency>

        <dependency>
            <groupId>com.101tec</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.2</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.20</version>
        </dependency>

    </dependencies>

<dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>1.5.11.RELEASE</version>
                <scope>import</scope>
                <type>pom</type>
            </dependency>
        </dependencies>
    </dependencyManagement>

四.dubbo-api（服务接口层）：maven会打包成jar格式，下图是包结构：

五.dubbo-common（公共工具包层）：主要放置一些公共的工具类，枚举等。maven会打包成jar格式，下图是包结构：

六.dubbo-provider（服务提供方）：主要就是服务的提供，对接口层接口功能的实现。

1.包结构图如下

2.pom.xml:

<dependencies>
        <dependency>
            <groupId>com.baiyu</groupId>
            <artifactId>dubbo-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>com.baiyu</groupId>
            <artifactId>dubbo-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>


        <!-- 数据库相关 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.39</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.2</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.4</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!-- 可以把springboot 打包生成可执行的war或者jar -->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>1.5.11.RELEASE</version>
            </plugin>

            <!-- mybatis 自动生成文件插件-->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.5</version>
                <configuration>
                    <!--允许移动生成的文件 -->
                    <verbose>true</verbose>
                    <!-- 是否覆盖 -->
                    <overwrite>true</overwrite>
                    <configurationFile>src/main/resources/mybatis-generator/generatorConfig.xml</configurationFile>
                </configuration>
            </plugin>
        </plugins>
    </build>

3.applicationContext-dubbo.xml spring整合dubbo的配置

<?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="demo-priver" owner="yourName"/>
    <dubbo:registry address="zookeeper://localhost:2181"/>
    <dubbo:protocol name="dubbo" port="20881"/>
    <dubbo:service interface="com.baiyu.service.DemoService" ref="demoServiceImpl"/>
</beans>

4.dataSource.properties 数据库配置

spring.datasource.druid.url = spring.datasource:mysql://localhost:3306/user_center?useUnicode=true&characterEncoding=UTF-8
spring.datasource.druid.driver-class-name = com.mysql.jdbc.Driver
spring.datasource.druid.username = yourname
spring.datasource.druid.password = yourpassword

spring.datasource.druid.filters = stat,log4j
spring.datasource.druid.initial-size = 5
spring.datasource.druid.min-idle = 5
spring.datasource.druid.max-active = 20
spring.datasource.druid.max-wait = 60000
spring.datasource.druid.time-between-eviction-runs-millis = 60000
spring.datasource.druid.min-evictable-idle-time-millis = 300000
spring.datasource.druid.validation-query = SELECT 1 FROM DUAL
spring.datasource.druid.test-while-idle = true
spring.datasource.druid.test-on-borrow = false
spring.datasource.druid.test-on-return = false
spring.datasource.druid.pool-prepared-statements = false
spring.datasource.druid.max-pool-prepared-statement-per-connection-size = 20

七.dubbo-consumer（服务消费方）：WEB项目，消费provider提供的服务。

1.包结构

2.pom.xml

<dependencies>
        <dependency>
            <groupId>com.baiyu</groupId>
            <artifactId>dubbo-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>com.baiyu</groupId>
            <artifactId>dubbo-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>

        <!--swagger2-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.2.2</version>
            <!--<exclusions>-->
                <!--<exclusion>-->
                    <!--<groupId>com.google.guava</groupId>-->
                    <!--<artifactId>guava</artifactId>-->
                <!--</exclusion>-->
            <!--</exclusions>-->
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.2.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!--<plugin>-->
                <!--<groupId>org.springframework.boot</groupId>-->
                <!--<artifactId>spring-boot-maven-plugin</artifactId>-->
            <!--</plugin>-->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.1.0</version>
            </plugin>
        </plugins>
    </build>

3.applicationContext-dubbo.xml spring整合dubbo配置类

<?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="demo-consumer" owner="yourname"/>
    <dubbo:registry address="zookeeper://localhost:2181"/>
    <dubbo:reference interface="com.baiyu.service.DemoService" id="demoServiceImpl"/>

</beans>

八.启动：启动zookeeper,dubbo-provider,dubbo-consumer项目，调用dubbo-consumer接口进行请求验证。

Dubbo学习之路（二）：Dubbo的接入流程（内附demo地址）

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