【转载】java对象和byte数组互转,直接拿去用

//加了了Optional防止空指针异常,加入了泛型,省去了强制转化

 1 import java.io.*;
 2 import java.util.Optional;
 3 
 4 /**
 5  * Created by Jason on 2017/1/3.
 6  */
 7 public class ByteArrayUtils {
 8 
 9     public static<T> Optional<byte[]> objectToBytes(T obj){
10         byte[] bytes = null;
11         ByteArrayOutputStream out = new ByteArrayOutputStream();
12         ObjectOutputStream sOut;
13         try {
14             sOut = new ObjectOutputStream(out);
15             sOut.writeObject(obj);
16             sOut.flush();
17             bytes= out.toByteArray();
18         } catch (IOException e) {
19             e.printStackTrace();
20         }
21         return Optional.ofNullable(bytes);
22     }
23 
24     public static<T> Optional<T> bytesToObject(byte[] bytes) {
25         T t = null;
26         ByteArrayInputStream in = new ByteArrayInputStream(bytes);
27         ObjectInputStream sIn;
28         try {
29             sIn = new ObjectInputStream(in);
30             t = (T)sIn.readObject();
31         } catch (Exception e) {
32             e.printStackTrace();
33         }
34         return Optional.ofNullable(t);
35 
36     }
37 }
38 --------------------- 
39 作者：idealemail 
40 来源：CSDN 
41 原文：https://blog.csdn.net/idealemail/article/details/53993872 
42 版权声明：本文为博主原创文章，转载请附上博文链接！

by -- 阿圆这个程序媛