Hessian Java

Hessian can be defined as a binary website service protocol that is utilized for enabling remote communication among applications. It majorly used for creating distributed systems in Java. Hessian is also utilized for providing a simple and efficient protocols. Let's understand about Hessian in detail in the following paragraphs.

Features of Hessian in Java

1. Binary Protocol

Hessian majorly utilizes binary a binary protocol for serialization of data. This binary protocol is considered compact full than various text related protocols such as XML. It majorly results in usage of bandwidth and increased transmission of data.

2. Cross Language Support

The usage of Hessian is not limited only to Java. The features and functionalities of Hessian provide it to be implemented in several programming languages. The above-mentioned functionality of Hessian enables interoperability among systems that are written in various languages. This makes Hessian more suitable for usage in heterogenous environments.

3. Efficiency

The usage of compact binary format by Hessian are utilized for contributing to reducing latency of network. The above-mentioned functionality is useful in situations when the response times are very crucial.

4. Simplicity

Hessian is created and designed to be easy and straightforward for using. The developers can easily channel their focus on definition of services and various methods without the interference of complex configurations or verbosity.

5. Cross-Platform Compatibility:

In the Java ecosystem, Hessian is widely supported along with official libraries that are provided by the Caucho Technology. These libraries are utilized in facilitating messages and their encoding and decoding in applications of Java.

6. Performance

Another major feature of Hessian is its performance. The amount of data that gets transferred through the network gets reduced with the help of Hessian and this results in quicker communication rather than various text-based protocols.

Implementation and Usage of Hessian

The Hessian can be integrated into the Java application of developers by simply including the library of Hessian and using APIs of Hessian for the creation of Hessian related services and clients.

In situations where lightweight communication, efficient mode of transferring data, and cross-language compatibility is required, Hessian can be easily employed. Hessian makes it suitable for the creation of distributed systems.

Let's understand more about the features and functionalities of Hessian in Java with the help of an example program.

Filename: ServerHessian.java

import com.caucho.hessian.server.HessianServlet;
import com.caucho.hessian.client.HessianProxyFactory;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import java.io.Serializable;
import java.util.Date;
interface GreetService extends Serializable {
    String displayHello(String name);
    String displayTime();
    String displayDate();
}
class GreetServiceImp extends HessianServlet implements GreetService {
    @Override
    public String displayHello(String name) {
        return "Hello, " + name + "!";
    }
    @Override
    public String displayTime() {
        int hour = new Date().getHours();
        if (hour < 12) {
            return "GOOD MORNING!";
        } else if (hour < 18) {
            return "GOOD AFTERNOON!";
        } else {
            return "GOOD EVENING!";
        }
    }
    @Override
    public String displayDate() {
        return new Date().toString();
    }
}
class ClientHessian {
    public static void main(String[] args) {
        HessianProxyFactory obj = new HessianProxyFactory();
        try {
            String serviceUrl = "http://localhost:8080/hessian-service";
            GreetService greetingService = (GreetService) obj.create(GreetService.class, serviceUrl);
            String response1 = greetingService.displayHello("ESHWAR");
            String response2 = greetingService.displayTime();
            String response3 = greetingService.displayDate();
            // Display the responses
            System.out.println("RESPONSE 1: " + response1);
            System.out.println("RESPONSE 2: " + response2);
            System.out.println("RESPONSE 3: " + response3);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
class ServerHessian {
    public static void main(String[] args) {
        try {
            Server server = new Server(8080);
            ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
            context.setContextPath("/");
            server.setHandler(context);
            context.addServlet(new ServletHolder(new GreetServiceImp()), "/hessian-service");
            server.start();
            System.out.println("Hessian Server started at http://localhost:8080/");
            server.join();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Conclusion

In conclusion, a robust and efficient solution for the creation of distributed systems is offered by the Hessian in Java. The various features of Hessian such as its binary protocol, cross language support, and capabilities of integration with various frameworks like Spring make it a great choice for a huge range of applications.

Next TopicHow to Connect Login Page to Database in Java

← prev next →