dubbo手册地址：https://www.gitbook.com/@dubbo
dubbo包地址：http://dubbo.io/
实现非常简单，难点在于dubbo调优。简单就是接口都是现成的，实现类还是现成的，所以你只需要配置就行了。
项目用的是SSM，如果不需要或者不一样 注意下面的pom配置文件。
dubbo.xml
<?xml version="1.0" encoding="UTF-8"?>
<!-- Copyright 1999-2011 Alibaba Group. -->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
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://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd
">
<!-- 提供方应用信息，用于计算依赖关系 -->
<dubbo:application name="activiti-provider" owner="nihoutao所有人"
organization="mayun你的组织名称" />
<!-- 注册中心暴露服务地址 -->
<dubbo:registry group="dubbo"
address="zookeeper://127.0.0.1:2181?client=zkclient" check="false" />
<!-- 用dubbo协议在20880端口暴露服务 -->
<dubbo:protocol name="dubbo" port="20880" />
<dubbo:provider dispatcher="all" timeout="50000"
threadpool="fixed" threads="500" accepts="1000" />
<!-- activiti对外开放的七大服务 -->
<dubbo:service interface="org.activiti.engine.RepositoryService" ref="repositoryService"/>
<dubbo:service interface="org.activiti.engine.RuntimeService" ref="runtimeService"/>
<dubbo:service interface="org.activiti.engine.FormService" ref="formService"/>
<dubbo:service interface="org.activiti.engine.IdentityService" ref="identityService"/>
<dubbo:service interface="org.activiti.engine.TaskService" ref="taskService"/>
<dubbo:service interface="org.activiti.engine.HistoryService" ref="historyService"/>
<dubbo:service interface="org.activiti.engine.ManagementService" ref="managementService"/>
<!-- ./activiti对外开放的七大服务 -->
<!-- 扫描注解包路径，多个包用逗号分隔，不填pacakge表示扫描当前ApplicationContext中所有的类 -->
<dubbo:annotation package="com.alibaba" />
我不建议扫包这种方式，因为后期还得配置好多，要么都得在类上声明，不方便啊。
</beans>
在类上注释的样子。
配置dubbo你可能遇到两个问题，一个就是小红叉问题：http://blog.csdn.net/jiao_zg/article/details/64439525
还有一个就是消费方找不到你的类，报出让你重新注册这个那个滴，这不是你配置的问题，是你的提供方和消费方的这个要用的类路径不一致。当然，你要是不用扫包，用引用的方式还有这个问题，那就可能是这个解决方式，也可能不是，多搜搜吧。
pom.xml
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<srping.version>4.3.10.RELEASE</srping.version>
<mybatis.version>3.2.8</mybatis.version>
<slf4j.version>1.7.25</slf4j.version>
<log4j.version>1.2.17</log4j.version>
<dubbo.version>2.5.5</dubbo.version>
<redis.version>2.5.5</redis.version>
<commons-dbcp.version>1.4</commons-dbcp.version>
<jackson.version>2.0.4</jackson.version>
<spymemcached.version>2.8.1</spymemcached.version>
<guava.version>17.0</guava.version>
<commons-lang3.version>3.3.2</commons-lang3.version>
<commons-io.version>2.4</commons-io.version>
<joda-time.version>2.1</joda-time.version>
<jetty.version>8.1.15.v20140411</jetty.version>
<mockito.version>1.9.0</mockito.version>
<powermock.version>1.4.12</powermock.version>
<activiti.version>5.22.0</activiti.version>
</properties>
<!-- 用到的jar包 -->
<dependencies>
<!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-spring -->
<!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-ehcache -->
<!-- dubbo -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>${dubbo.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.zookeeper/zookeeper -->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.101tec/zkclient -->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
<!-- redis -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-redis -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.8.7.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.3</version>
</dependency>
<!-- quartz -->
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>2.3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.2.0.Final</version>
</dependency>
<!-- activit demo 复制得到 -->
<!-- actvititi -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.4</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-engine</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-json-converter</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-explorer</artifactId>
<version>${activiti.version}</version>
<exclusions>
<exclusion>
<artifactId>vaadin</artifactId>
<groupId>com.vaadin</groupId>
</exclusion>
<exclusion>
<artifactId>dcharts-widget</artifactId>
<groupId>org.vaadin.addons</groupId>
</exclusion>
<exclusion>
<artifactId>activiti-simple-workflow</artifactId>
<groupId>org.activiti</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-modeler</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-rest</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-diagram-rest</artifactId>
<version>${activiti.version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-cxf</artifactId>
<version>${activiti.version}</version>
</dependency>
<!-- cxf的http支持 -->
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-api</artifactId>
<version>2.7.6</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-frontend-jaxws</artifactId>
<version>2.7.6</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http-jetty</artifactId>
<version>2.7.6</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http</artifactId>
<version>2.7.6</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2.11</version>
</dependency>
<!-- 支持activiti缓存 -->
<dependency>
<groupId>org.infinispan</groupId>
<artifactId>infinispan-core</artifactId>
<version>5.1.7.Final</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.6.9</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.9</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency>
<!-- SPRING end -->
<!-- PERSISTENCE begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- dbcp connection pool -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.0.1</version>
</dependency>
<!-- PERSISTENCE end -->
<!-- WEB begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- WEB end -->
<!-- LOGGING begin -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- activiti 日志调整到项目日志中 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- LOGGING end -->
<!-- GENERAL UTILS begin -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.8.3</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<dependency>
<groupId>org.jodd</groupId>
<artifactId>jodd</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>${joda-time.version}</version>
</dependency>
<!-- UUID -->
<dependency>
<groupId>com.fasterxml.uuid</groupId>
<artifactId>java-uuid-generator</artifactId>
<version>3.1.3</version>
</dependency>
<!-- GENERAL UTILS end -->
<!-- activit demo 复制得到 -->
<!-- 单元测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<!-- 表示开发的时候引入，发布的时候不会加载此包 -->
<scope>test</scope>
</dependency>
<!-- java ee包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>
<!-- spring框架包 start -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${srping.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${srping.version}</version>
</dependency>
<!-- spring框架包 end -->
<!-- mybatis框架包 start -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- mybatis框架包 end -->
<!-- 数据库驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>
<!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- jstl标签类 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- log END -->
<!-- Json -->
<!-- 格式化对象，方便输出日志 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.6</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<!-- 上传组件包 start -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
<!-- 上传组件包 end -->
</dependencies>
部署的可视化监控 在jar包中的dubbo-admin文件中 直接部署就行
