Test.java

Test.java

/*
<dependency>
      <groupId>com.caucho</groupId>
      <artifactId>hessian</artifactId>
      <version>4.0.38</version>
</dependency>
*/

import com.caucho.hessian.io.HessianInput;
import com.caucho.hessian.io.HessianOutput;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

/**
 * Created by junbaor on 2017/8/02.
 */
public class Test {

    public static void main(String[] args) throws IOException {
        B b = new B();
        b.setAge(10);

        A a = (A) b;

        byte[] serialize = serialize(a);
        B deserialize = (B) deserialize(serialize);

        System.out.println(a); // B{age=10}
        System.out.println(b); // B{age=10}
        System.out.println(deserialize); // B{age=null}
    }

    public static byte[] serialize(Object obj) throws IOException {
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        HessianOutput ho = new HessianOutput(os);
        ho.writeObject(obj);
        return os.toByteArray();
    }

    public static Object deserialize(byte[] by) throws IOException {
        ByteArrayInputStream is = new ByteArrayInputStream(by);
        HessianInput hi = new HessianInput(is);
        return hi.readObject();
    }

    static class ClassA {
        private Integer age;

        public Integer getAge() {
            return age;
        }

        public void setAge(Integer age) {
            this.age = age;
        }

        @Override
        public String toString() {
            final StringBuffer sb = new StringBuffer("B{");
            sb.append("age=").append(age);
            sb.append('}');
            return sb.toString();
        }
    }

    static class ClassB {
        private Integer age;

        public Integer getAge() {
            return age;
        }

        public void setAge(Integer age) {
            this.age = age;
        }

        @Override
        public String toString() {
            final StringBuffer sb = new StringBuffer("B{");
            sb.append("age=").append(age);
            sb.append('}');
            return sb.toString();
        }
    }
}