public class arreytobytes {
public static void main(String[] args) throws Exception {
Test360 test =new Test360();
System.out.print ( "java class对象转字节数组\\\\n" );
byte[] bufobject = getBytesFromObject(test);
for(int i=0 ; i
java class对象转字节数组
-84,-19,0,5,115,114,0,12,100,97,121,49,46,84,101,115,116,51,54,48,76,-69,81,12,-51,122,126,-123,2,0,0,120,112,
字节数组还原对象
补充知识：java对象与byte[]数组之间的相互转化，压缩解压缩操作
下面介绍一下java对象之间和byte[]数组之间的相互转化。并对byte[]数据进行压缩操作。java对象转化为byte[]数组可用于redis中实现缓存。（这里暂不做介绍）.话不多说直接开实例：
首先我们创建一个java对象：Person.java
public class Person implements Serializable{
private String userName;
private String password;
private String phone;
private String email;
private String sex;
private String age;
public Person(){}
public Person(String userName, String password, String phone, String email,
String sex, String age) {
super();
this.userName = userName;
this.password = password;
this.phone = phone;
this.email = email;
this.sex = sex;
this.age = age;
@Override
public String toString() {
return "Person [userName=" userName ", password=" password
", phone=" phone ", email=" email ", sex=" sex
", age=" age "]";
public String getUserName() {
return userName;
public void setUserName(String userName) {
this.userName = userName;
public String getPassword() {
return password;
public void setPassword(String password) {
this.password = password;
public String getPhone() {
return phone;
public void setPhone(String phone) {
this.phone = phone;
public String getEmail() {
return email;
public void setEmail(String email) {
this.email = email;
public String getSex() {
return sex;
public void setSex(String sex) {
this.sex = sex;
public String getAge() {
return age;
public void setAge(String age) {
this.age = age;
下面演示对person对象的转换：Object2ByteArray.java
public class Object2ByteArray {
public static void main(String[] args) {
try {
Person person=new Person("userName", "password", "phone", "email", "sex", "age");
System.out.println("person:" person);
ByteArrayOutputStream bos=new ByteArrayOutputStream();
ObjectOutputStream oos=new ObjectOutputStream(bos);
oos.writeObject(person);
//得到person对象的byte数组
byte[] personByteArray = bos.toByteArray();
System.out.println("before compress:" personByteArray.length);
//将byte数据压缩
byte[] zipPersonByteArray = compress(personByteArray);
System.out.println("after compress:" zipPersonByteArray.length);
closeStream(oos);
closeStream(bos);
//从byte数组中还原person对象
ByteArrayInputStream bin=new ByteArrayInputStream(personByteArray);
ObjectInputStream ois=new ObjectInputStream(bin);
Person restorePerson = (Person) ois.readObject();
System.out.println(restorePerson);
closeStream(ois);
closeStream(bin);
//从压缩的byte数组中还原person对象
byte[] unCompressByte = unCompress(zipPersonByteArray);
ByteArrayInputStream zipBin=new ByteArrayInputStream(unCompressByte);
ObjectInputStream zipOis=new ObjectInputStream(zipBin);
Person zipBytePerson=(Person) zipOis.readObject();
System.out.println("compress person:" zipBytePerson.toString());
closeStream(zipOis);
closeStream(zipBin);
} catch (Exception e) {
e.printStackTrace();
* @description 关闭数据流
* @param oStream
public static void closeStream(Closeable oStream){
if(null!=oStream){
try {
oStream.close();
} catch (IOException e) {
oStream=null;//赋值为null,等待垃圾回收
e.printStackTrace();
* @description 将byte 数组压缩
* @param bt
* @return
public static byte[] compress(byte[] bt){
//将byte数据读入文件流
ByteArrayOutputStream bos=null;
GZIPOutputStream gzipos=null;
try {
bos=new ByteArrayOutputStream();
gzipos=new GZIPOutputStream(bos);
gzipos.write(bt);
} catch (Exception e) {
e.printStackTrace();
}finally{
closeStream(gzipos);
closeStream(bos);
return bos.toByteArray();
* @description 解压缩byte数组
* @param bt
* @return
public static byte[] unCompress(byte[] bt){
//byte[] unCompress=null;
ByteArrayOutputStream byteAos=null;
ByteArrayInputStream byteArrayIn=null;
GZIPInputStream gzipIn=null;
try {
byteArrayIn=new ByteArrayInputStream(bt);
gzipIn=new GZIPInputStream(byteArrayIn);
byteAos=new ByteArrayOutputStream();
byte[] b=new byte[4096];
int temp = -1;
while((temp=gzipIn.read(b))>0){
byteAos.write(b, 0, temp);
} catch (Exception e) {
e.printStackTrace();
return null;
}finally{
closeStream(byteAos);
closeStream(gzipIn);
closeStream(byteArrayIn);
return byteAos.toByteArray();
上面的示例显示了：java对象到byte[]数据的转化；
byte[]数据的压缩和解压缩操作；
byte[]数据还原java对象的操作；
运行结果：
person:Person [userName=userName, password=password, phone=phone, email=email, sex=sex, age=age]
before compress:189
after compress:156
Person [userName=userName, password=password, phone=phone, email=email, sex=sex, age=age]
compress person:Person [userName=userName, password=password, phone=phone, email=email, sex=sex, age=age]
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