不用构造器也能创建对象

import java.io.ByteArrayInputStream;   
import java.io.ByteArrayOutputStream;   
import java.io.ObjectInputStream;   
import java.io.Serializable;   
public class TestClass implements Serializable{   
    private static final long serialVersionUID = 0L;   
    public TestClass() throws Exception {   
        throw new Exception("哎呀妈呀,异常啦!!!!");   
    }   
    public static void main(String[] args) throws Exception {   
        byte[] head = { -84, -19, 0, 5, 115, 114, 0 };   
        byte[] ass = { 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 120, 112 };   
        String name = TestClass.class.getName();   
        ByteArrayOutputStream baos = new ByteArrayOutputStream();   
        baos.write(head);   
        baos.write(name.length());   
        baos.write(name.getBytes());   
        baos.write(ass);   
        baos.flush();   
        baos.close();   
        ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(baos.toByteArray()));   
        TestClass o = (TestClass) ois.readObject();   
        ois.close();   
        System.out.println("创建对象: " + o);   
    }   
}   

Objectstreamclass代码  

1. cons = reflFactory.newConstructorForSerialization(cl, cons);  

cons = reflFactory.newConstructorForSerialization(cl, cons);

Java代码  

1. Constructor superCons = TestClass.class.getSuperclass().getConstructor();   
2. System.out.println(superCons);   
3. ReflectionFactory reflFactory = ReflectionFactory.getReflectionFactory();   
4. Constructor c = reflFactory.newConstructorForSerialization(TestClass.class,superCons);   
5. System.out.println(c.newInstance());  

        Constructor superCons = TestClass.class.getSuperclass().getConstructor();
        System.out.println(superCons);
        ReflectionFactory reflFactory = ReflectionFactory.getReflectionFactory();
        Constructor c = reflFactory.newConstructorForSerialization(TestClass.class,superCons);
        System.out.println(c.newInstance());

运行结果代码  

1. public java.lang.Object()   
2. TestClass@fd13b5  

public java.lang.Object()
TestClass@fd13b5

不用构造器也能创建对象

原文：http://blog.csdn.net/zhangming1013/article/details/44618587