Shulou(Shulou.com)06/01 Report--

This article mainly introduces "how to use Dubbo distributed framework". In daily operation, I believe many people have doubts about how to use Dubbo distributed framework. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to use Dubbo distributed framework". Next, please follow the editor to study!

Create a Maven project

I'm not going to say any more about the way to create a Maven project in IntelliJ. I just want to say that after the project is successfully created, delete the src directory, because we don't need to write code under the project, we will take the project as the parent project, and then create multiple modules for it.

Add modules to the created project

After we have successfully created the Maven project in the first step, we will add three modules, namely common,provider and consumer, to the Maven project in the second step. The results are as follows:

Provider will be our service provider and consumer will be the service consumer. These two are easy to understand. In addition to these two, we also need to give the common module, which mainly provides a common interface for service providers and service consumers to use.

Add an interface to the common module

In the common module, add a SayHello interface as follows:

The provider module relies on common and provides services

1. First, open the pom.xml file of provider and add dependencies to it. There are four subcategories of dependencies to be added:

1. Add dependencies on common modules

two。 Add dependency on spring

3. Add dependency on dubbo

4. Add dependency on zookeeper

As follows:

Org.sang common 1.0-SNAPSHOT org.springframework spring-web 4.3.10.RELEASE com.alibaba dubbo 2.5.3 org.springframework Spring netty org.jboss.netty org.apache.zookeeper zookeeper 3.4.10 com.101tec zkclient 0.10

Then implement the interface of the common module in provider, as follows:

Public class SayHelloImpl implements SayHello {public String sayHello (String name) {return "Hello" + name;}}

Then we need to expose the service in the spring configuration file of provider, as follows:

Here I use the registry zookeeper recommended by dubbo. Friends who install zookeeper on Linux can refer to installing Zookeeper on Linux and some precautions.

The registered address is the address of the server where you installed zookeeper, and then expose the interface of the service.

Finally, we use a main method to run provider, as follows:

Public class Main {public static void main (String [] args) throws IOException {ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext ("applicationContext.xml"); ctx.start (); System.in.read ();}}

OK, then our provider module is finished.

Consume services in the consumer module

First of all, add related dependencies to the consumer module, which is the same as the provider dependencies, so I won't repeat the code here.

Then we subscribe to the service in consumer's spring configuration file as follows:

First, the subscription address is still the address of zookeeper, and then register a bean of SayHello, which can be used directly in our project.

Similarly, we still use a main method to start the service consumer:

Public class Main {public static void main (String [] args) {ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext ("applicationContext.xml"); SayHello sayHello = (SayHello) ctx.getBean ("sayHello"); String s = sayHello.sayHello ("Zhang San"); System.out.println (s);}}

The running results are as follows:

At this point, the study on "how to use the Dubbo distributed framework" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.