简述:
用字节流的方式,复制Java对象
代码:
流克隆复制函数
public static Object deepClone(Object obj){
if(obj == null){
return null;
}
try {
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
Object cloneObj = null;
ObjectOutputStream out = new ObjectOutputStream(byteOut);
out.writeObject(obj);
ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
ObjectInputStream in = new ObjectInputStream(byteIn);
cloneObj = in.readObject();
return cloneObj;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
ObjectClone.java
package test;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
public class ObjectClone {
/**
* 测试对象
*/
private static class Person implements Serializable {
private String name;
private int age;
Person(String name, int age){
this.name = name;
this.age = age;
}
@Override
public String toString() {
return String.format("name: %s\nage: %s", name, age);
}
}
/**
* 测试函数
*/
public static void main(String[] args) {
Person person = new Person("Henry", 22);
Person newPerson = (Person)ObjectClone.deepClone(person);
System.out.println(newPerson);
}
/**
* 工具类
*
* @param obj
* @return
*/
public static Object deepClone(Object obj){
if(obj == null){
return null;
}
try {
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
Object cloneObj = null;
ObjectOutputStream out = new ObjectOutputStream(byteOut);
out.writeObject(obj);
ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
ObjectInputStream in = new ObjectInputStream(byteIn);
cloneObj = in.readObject();
return cloneObj;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
测试结果:
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