springboot极大地提升了java应用的开发体验，感觉特别酸爽。服务化框架可谓是大型系统必用，比较古典的是阿里开源的dubbo，可惜很早就不更新了，研究其代码来看，感觉不够轻量，幸运的是去年微博开源了自己的轻量级服务化框架motan。本文阐述下如何在springboot下用motan。
服务方：
工程结构代码 收藏代码
whatsmars-motan
|-src
|-main
|-java
|-com.weibo.motan.demo.service
|-impl
MotanDemoServiceImpl.java
APP.java
MotanDemoService.java
|-resource
|-spring
motan_demo_server.xml
log4j.properties
pom.xml
依赖：
Xml代码 收藏代码
<?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>
<artifactId>whatsmars-motan</artifactId>
<properties>
<!-- The main class to start by executing java -jar -->
<start-class>com.weibo.motan.demo.service.App</start-class>
<motan.version>0.1.1</motan.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<!--weibo motan-->
<dependency>
<groupId>com.weibo</groupId>
<artifactId>motan-core</artifactId>
<version>${motan.version}</version>
</dependency>
<dependency>
<groupId>com.weibo</groupId>
<artifactId>motan-transport-netty</artifactId>
<version>${motan.version}</version>
</dependency>
<dependency>
<groupId>com.weibo</groupId>
<artifactId>motan-registry-consul</artifactId>
<version>${motan.version}</version>
</dependency>
<dependency>
<groupId>com.weibo</groupId>
<artifactId>motan-registry-zookeeper</artifactId>
<version>${motan.version}</version>
</dependency>
<!-- dependencies blow were only needed for spring-based features -->
<dependency>
<groupId>com.weibo</groupId>
<artifactId>motan-springsupport</artifactId>
<version>${motan.version}</version>
</dependency>
</dependencies>
<build>
<finalName>${project.artifactId}</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
<version>1.2.6.RELEASE</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
demo_motan_server.xml
Xml代码 收藏代码
<?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:motan="http://api.weibo.com/schema/motan"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://api.weibo.com/schema/motan http://api.weibo.com/schema/motan.xsd">
<!-- 业务具体实现类 -->
<!-- <bean id="motanDemoServiceImpl" class="com.weibo.motan.demo.service.impl.MotanDemoServiceImpl"/> -->
<!-- 注册中心配置 使用不同注册中心需要依赖对应的jar包。如果不使用注册中心，可以把check属性改为false，忽略注册失败。-->
<!--<motan:registry regProtocol="local" name="registry" />-->
<!--<motan:registry regProtocol="consul" name="registry" address="127.0.0.1:8500"/>-->
<motan:registry regProtocol="zookeeper" name="registry" address="127.0.0.1:2181"/>
<!-- 协议配置。为防止多个业务配置冲突，推荐使用id表示具体协议。-->
<motan:protocol id="demoMotan" default="true" name="motan"
maxServerConnection="80000" maxContentLength="1048576"
maxWorkerThread="800" minWorkerThread="20"/>
<!-- 通用配置，多个rpc服务使用相同的基础配置. group和module定义具体的服务池。export格式为“protocol id:提供服务的端口”-->
<motan:basicService export="demoMotan:8002"
group="motan-demo-rpc" accessLog="false" shareChannel="true" module="motan-demo-rpc"
application="myMotanDemo" registry="registry" id="serviceBasicConfig"/>
<!-- 具体rpc服务配置，声明实现的接口类。-->
<motan:service interface="com.weibo.motan.demo.service.MotanDemoService"
ref="motanDemoService" export="demoMotan:8001" basicService="serviceBasicConfig">
</motan:service>
<motan:service interface="com.weibo.motan.demo.service.MotanDemoService"
ref="motanDemoService" export="demoMotan:8002" basicService="serviceBasicConfig">
</motan:service>
</beans>
启动类：
Java代码 收藏代码
@SpringBootApplication
@EnableAutoConfiguration
@ImportResource(locations={"classpath*:spring/*server.xml"})
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
下面这个很重要：
Java代码 收藏代码
@Component
@Order(value = 1)
public class MotanSwitcherRunner implements CommandLineRunner {
@Override
public void run(String... args) throws Exception {
// 在使用注册中心时要主动调用下面代码
MotanSwitcherUtil.setSwitcherValue(MotanConstants.REGISTRY_HEARTBEAT_SWITCHER, true);
System.out.println("server start...");
}
}
服务接口：
Java代码 收藏代码
public interface MotanDemoService {
String hello(String name);
}
服务实现：
Java代码 收藏代码
@Service("motanDemoService")
public class MotanDemoServiceImpl implements MotanDemoService {
public String hello(String name) {
System.out.println(name);
return "Hello " + name + "!";
}
}
就这么简单，先启动zookeeper，再启动App就可发布motan服务，当应用中既要发布服务，又要引用服务时，可以将注册中心配置单独放在一个配置文件里。另外，不管是dubbo，还是motan，对注解的支持都不是特别好用，所以还是建议采用xml配置。关于消费方怎么用，详细代码见https://github.com/javahongxi/whatsmars的whatsmars-motan-demo 模块。
