Dubbo has a custom configuration component based on Spring Schema, and the configuration options supported by XML correspond to those described in the configuration reference manual. Please refer to the examples used in this article at dubbo-samples-spring-xml.
DemoService.java：
package org.apache.dubbo.demo;
public interface DemoService {
String sayHello(String name);
}
DemoServiceImpl.java：
package org.apache.dubbo.demo.provider;
import org.apache.dubbo.demo.DemoService;
public class DemoServiceImpl implements DemoService {
public String sayHello(String name) {
return "Hello " + name;
}
}
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:property-placeholder/>
<dubbo:application name="demo-provider"/>
<dubbo:registry address="zookeeper://${zookeeper.address:127.0.0.1}:2181"/>
<dubbo:provider token="true"/>
<bean id="demoService" class="org.apache.dubbo.samples.basic.impl.DemoServiceImpl"/>
<dubbo:service interface="org.apache.dubbo.samples.basic.api.DemoService" ref="demoService"/>
</beans>
public class Application {
public static void main(String[] args) throws InterruptedException {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/dubbo-demo-provider.xml");
context.start();
System.out.println("dubbo service started");
// to hang up main thread
new CountDownLatch(1).await();
}
}
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:property-placeholder/>
<dubbo:application name="demo-consumer"/>
<dubbo:registry address="zookeeper://${zookeeper.address:127.0.0.1}:2181"/>
<dubbo:reference id="demoService" check="true" interface="org.apache.dubbo.samples.basic.api.DemoService"/>
</beans>
public class Application {
public static void main(String[] args) throws IOException {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/dubbo-demo-consumer.xml");
context.start();
GreetingsService greetingsService = (GreetingsService) context.getBean("greetingsService");
String message = greetingsService.sayHi("dubbo");
System.out.println("Receive result ======> " + message);
System.in.read();
System.exit(0);
}
}
<dubbo:service interface="com.foo.BarService" version="1.0.0" />
<dubbo:service interface="org.apache.dubbo.example.service.DemoService" group="demo2"/>
Configure failover retry count:
<dubbo:service retries="2" />
<dubbo:reference>
<dubbo:method name="findFoo" retries="2" />
</dubbo:reference>
<dubbo:application name="world" />
<dubbo:registry id="registry" address="10.20.141.150:9090" username="admin" password="hello1234" />
<!-- Multiple protocol configuration -->
<dubbo:protocol name="dubbo" port="20880" />
<dubbo:protocol name="rmi" port="1099" />
<!-- Use dubbo protocol to expose service -->
<dubbo:service interface="com.alibaba.hello.api.HelloService" version="1.0.0" ref="helloService" protocol="dubbo" />
<!-- Use rmi protocol to expose service -->
<dubbo:service interface="com.alibaba.hello.api.DemoService" version="1.0.0" ref="demoService" protocol="rmi" />
<?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://dubbo.apache.org/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">
<dubbo:application name="world" />
<!-- Multiple registry configuration -->
<dubbo:registry id="chinaRegistry" address="10.20.141.150:9090" />
<dubbo:registry id="intlRegistry" address="10.20.154.177:9010" default="false" />
<!-- Register with Chinese registry -->
<dubbo:service interface="com.alibaba.hello.api.HelloService" version="1.0.0" ref="helloService" registry="chinaRegistry" />
<!-- Register with international registry -->
<dubbo:service interface="com.alibaba.hello.api.DemoService" version="1.0.0" ref="demoService" registry="intlRegistry" />
</beans>
Specify global default timeout, effective for all services:
<dubbo:provider timeout="5000" />
<dubbo:consumer timeout="5000" />
Based on group default values:
<dubbo:provider timeout="5000">
<dubbo:service interface="com.alibaba.hello.api.HelloService" ref="helloService"/>
<dubbo:service interface="com.alibaba.hello.api.HelloService2" ref="helloService2"/>
</dubbo:provider>
<dubbo:provider timeout="8000">
<dubbo:service interface="com.alibaba.hello.api.DemoService" ref="demoService"/>
<dubbo:service interface="com.alibaba.hello.api.DemoService2" ref="demoService2"/>
</dubbo:provider>