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Serializable java object to a string

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  Serializable java object to a string bob smith <bob@coolfone.net> - 2013-10-09 20:09 -0700
    Re: Serializable java object to a string Jeff Higgins <jeff@invalid.invalid> - 2013-10-10 02:11 -0400
    Re: Serializable java object to a string markspace <markspace@nospam.nospam> - 2013-10-09 23:27 -0700
    Re: Serializable java object to a string Arne Vajhøj <arne@vajhoej.dk> - 2013-10-10 19:52 -0400
      Re: Serializable java object to a string Arne Vajhøj <arne@vajhoej.dk> - 2013-10-10 20:07 -0400
      Re: Serializable java object to a string Arne Vajhøj <arne@vajhoej.dk> - 2013-10-10 20:08 -0400

#26270 — Serializable java object to a string

What's the easiest way to convert a Serializable java object to a string?

Maybe a hex string or base64?

Thanks.

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#26273

On 10/09/2013 11:09 PM, bob smith wrote:
> What's the easiest way to convert a Serializable java object to a string?
>
> Maybe a hex string or base64?
>
<http://docs.oracle.com/javase/7/docs/platform/serialization/spec/serialTOC.html>or 
or write a check

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#26274

On 10/9/2013 8:09 PM, bob smith wrote:
> What's the easiest way to convert a Serializable java object to a string?
>
> Maybe a hex string or base64?
>
> Thanks.
>


javax.xml.bind.DatatypeConverter contains both hex and base 64 
conversion methods to help you out.

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#26297

On 10/9/2013 11:09 PM, bob smith wrote:
> What's the easiest way to convert a Serializable java object to a string?
>
> Maybe a hex string or base64?

Write the object to an ObjectOutputStream wrapped around
a ByteArrayOutputStream, retrieve the byte array and
convert it to hex or base64.

Arne

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#26298

On 10/10/2013 7:52 PM, Arne Vajhøj wrote:
> On 10/9/2013 11:09 PM, bob smith wrote:
>> What's the easiest way to convert a Serializable java object to a string?
>>
>> Maybe a hex string or base64?
>
> Write the object to an ObjectOutputStream wrapped around
> a ByteArrayOutputStream, retrieve the byte array and
> convert it to hex or base64.

Example:

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.DatatypeConverter;

public class SerFun {
	public static String anySerialize(Object o) throws IOException {
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		ObjectOutputStream oos = new ObjectOutputStream(baos);
		oos.writeObject(o);
		oos.close();
		return DatatypeConverter.printBase64Binary(baos.toByteArray());
	}
	public static Object anyDeserialize(String s) throws IOException, 
ClassNotFoundException {
		ByteArrayInputStream bais = new 
ByteArrayInputStream(DatatypeConverter.parseBase64Binary(s));
		ObjectInputStream ois = new ObjectInputStream(bais);
		Object o = ois.readObject();
		ois.close();
		return o;
	}
	public static void main(String[] args) throws Exception {
         List<Data> lst = new ArrayList<Data>();
         lst.add(new Data(1, "A"));
         lst.add(new Data(2, "BB"));
         lst.add(new Data(3, "CCC"));
         System.out.println(lst);
         String s = anySerialize(lst);
         @SuppressWarnings("unchecked")
		List<Data> lst2 = (List<Data>)anyDeserialize(s);
         System.out.println(lst2);
	}
}

Arne

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#26299

On 10/10/2013 7:52 PM, Arne Vajhøj wrote:
> On 10/9/2013 11:09 PM, bob smith wrote:
>> What's the easiest way to convert a Serializable java object to a string?
>>
>> Maybe a hex string or base64?
>
> Write the object to an ObjectOutputStream wrapped around
> a ByteArrayOutputStream, retrieve the byte array and
> convert it to hex or base64.

I will recommend XML serialization over binary serialization if
the serialized version wil be persisted!

Arne

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