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直接上代码:
1、服务提供端及客户端共享代码
package com.alibaba.dubbo.demo;
public interface DemoService2 {
Person getPersion(String name);
}
package com.alibaba.dubbo.demo;
import java.io.Serializable;
public class Person implements Serializable {
private static final long serialVersionUID = -8994496944734041861L;
private int age;
private String name;
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "Person [age=" + age + ", name=" + name + "]";
}
}
2、客户端代码
import java.util.concurrent.Future;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.alibaba.dubbo.demo.DemoService2;
import com.alibaba.dubbo.demo.Person;
import com.alibaba.dubbo.rpc.RpcContext;
public class Consumer {
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
new String[] { "classpath:consumer.xml" });
context.start();
// 异步调用示例
DemoService2 demoService2 = (DemoService2) context.getBean("demoService2");
Person p = demoService2.getPersion("hanshubo");
System.out.println(p);
Future<Person> pFuture = RpcContext.getContext().getFuture();
p = pFuture.get();
System.out.println(p);
}
}
3、客户端配置文件
<?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"> <!-- 消费方应用名,用于计算依赖关系,不是匹配条件,不要与提供方一样 --> <dubbo:application name="consumer-of-helloworld-app" /> <!-- 使用zookeeper注册中心暴露发现服务地址 --> <dubbo:registry address="zookeeper://127.0.0.1:2181" /> <!-- 生成远程服务代理 --> <dubbo:reference id="demoService" interface="com.alibaba.dubbo.demo.DemoService" retries="2" /> <!-- 生成远程服务代理 --> <dubbo:reference id="validationService" interface="com.alibaba.dubbo.demo.ValidationService" retries="2" validation="true" /> <!-- 生成远程服务代理 --> <dubbo:reference id="demoService2" interface="com.alibaba.dubbo.demo.DemoService2" async="true" /> </beans>
注:重点关注下面这行代码,就OK啦
async="true"
4、服务提供端代码
package com.alibaba.dubbo.demo.provider;
import com.alibaba.dubbo.demo.DemoService2;
import com.alibaba.dubbo.demo.Person;
public class DemoService2Impl implements DemoService2 {
@Override
public Person getPersion(String name) {
Person r = new Person();
r.setAge(123);
r.setName(name);
return r;
}
}
4、服务提供端配置文件
<?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"> <!-- 提供方应用信息,用于计算依赖关系 --> <dubbo:application name="hello-world" /> <!-- 使用zookeeper注册中心暴露发现服务地址 --> <dubbo:registry address="zookeeper://127.0.0.1:2181" /> <!-- 用dubbo协议在20880端口暴露服务 --> <dubbo:protocol name="dubbo" port="20880" /> <!-- 声明需要暴露的服务接口 --> <dubbo:service interface="com.alibaba.dubbo.demo.DemoService" ref="demoService" /> <!-- 和本地bean一样实现服务 --> <bean id="demoService" class="com.alibaba.dubbo.demo.provider.DemoServiceImpl" /> <!-- 声明需要暴露的服务接口 --> <dubbo:service interface="com.alibaba.dubbo.demo.ValidationService" ref="validationService" /> <!-- 和本地bean一样实现服务 --> <bean id="validationService" class="com.alibaba.dubbo.demo.provider.ValidationServiceImpl" /> <bean id="cacheService" class="com.alibaba.dubbo.demo.provider.CacheServiceImpl" /> <dubbo:service interface="com.alibaba.dubbo.demo.CacheService" ref="cacheService" /> <!-- 声明需要暴露的服务接口 --> <dubbo:service interface="com.alibaba.dubbo.demo.DemoService2" ref="demoService2" /> <!-- 和本地bean一样实现服务 --> <bean id="demoService2" class="com.alibaba.dubbo.demo.provider.DemoService2Impl" /> </beans>
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原文地址:http://my.oschina.net/hanshubo/blog/378111