CODEWITHSUNDEEP
javajaxbbyte
mikki
mikki

Reputation: 27

JAXB write and read byte[] to xml - different values

I try to transform a string into an array of byte (byte[]) and save it in a xml file. my problems are different values of the byte[] after marshal und unmarshal the object with jaxb.

I´m sorry for the format of my posting!

`

@XmlRootElement
public class Token {

private byte[] token;    

public void createToken(){
 String stringTest = "ABCDEF";
  this.token = stringTest.getBytes(Charset.forName("UTF-8"));
 }


public byte[] getToken() {
    return token;
}

public void setToken(byte[] token) {
    this.token = token;
}
}// ENDE CLASS TOKEN



 @XmlRootElement(namespace = "TokenNS")
 public class TokenCollection {


 private List<byte[]> collection = new ArrayList<>();



public void addToken(byte[] tokenIn){
    this.collection.add(tokenIn);
}



 @XmlElement( name = "TokenCollection")
public List<byte[]> getTokenCollection(){
    return this.collection;
}

public void test(){
    Token t = new Token();
    t.createToken();
    byte[] tmp = t.getToken();
    this.addToken(tmp);
}



 }// ENDE TOKENCOLLECTION






      STARTER:

      public Starter() {

      Path path = Paths.get("trivial.xml");

      tc.test();




      JAXB.marshal(tc, System.out);
      try (Writer out = Files.newBufferedWriter(path, StandardCharsets.UTF_8)) {
        JAXB.marshal(tc, out);
    } catch (IOException io) {
        io.printStackTrace();
    }


}

`

OUTPUT: Should be: 65 66 67 68 69 70

XML-FILE (with wrong values): <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <ns2:tokenCollection xmlns:ns2="TokenNS"> <TokenCollection>QUJDREVG</TokenCollection> </ns2:tokenCollection>

Upvotes: 2

Views: 9806

Answers (2)

bdoughan
bdoughan

Reputation: 149037

A JAXB (JSR-222) implementation will represent byte[] in XML as the base64Binary schema type. If you want an alternate representation you can use an XmlAdapter.

Upvotes: 4

icza
icza

Reputation: 418167

Now after you edited your post, it works perfectly.

I read the XML with the following code, and in the end it prints the same "ABCDEF" string:

Path path = Paths.get("trivial.xml");
TokenCollection tc = JAXB.unmarshal(path.toFile(), TokenCollection.class);

// Prints "ABCDEF"
System.out.println(new String(tc.getTokenCollection().get(0),
    StandardCharsets.UTF_8));

Upvotes: 0

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