Converting Strings To XML And Back To String

Mar 3, 2014

I'm stuck with the following error message when i try to convert a String to XML and back to a String.
 
Exception in thread "main" org.w3c.dom.DOMException: WRONG_DOCUMENT_ERR: A node is used in a different document than the one that created it.
    at com.sun.org.apache.xerces.internal.dom.ParentNode.internalInsertBefore(Unknown Source)
    at com.sun.org.apache.xerces.internal.dom.ParentNode.insertBefore(Unknown Source)
    at com.sun.org.apache.xerces.internal.dom.NodeImpl.appendChild(Unknown Source)
    at com.innovatrail.consulting.xml.XMLTEST2.main(XMLTEST2.java:66)
 
Below is  my Java code snippet: The code syntactically correct except line 66. If you comment out line 66 in the source code, everything works just fine. The XML representation of my input string is denoted by INPUT 1 and that of my output string is denoted by OUTPUT 2.
 
package com.Test.xml;
 
import java.io.ByteArrayInputStream;
import java.io.StringWriter;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;

[Code] ....
 
INPUT 1:

<Collection>
<BookList>
  <Book>
    <Title>Wonder Man
    </Title>
    <Author>John Smith
    </Author>
    <Category>Fiction

[Code] .....
 
OUTPUT 2:

<Collection>
  <Book>
    <Title>Wonder Man</Title>
    <Author>John Smith</Author>
    <Category>Fiction</Category>

[Code] ....

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I'm using the class below to encrypt and decrypt data in my program. It works rather well with the exception that I can't for the mind of me get the recreation of the key to work. When the program runs the first time, it creates a key and saves it to Data.txt. This part works fine, and there are no errors, the encryption and decryption works until I reload the program and it tries to recreate the key using the String in the .txt.

read = loadFile.readline();
byte[] data = read.getBytes("UTF-8");
key = new SecretKeySpec(data, 0, data.length, "PBEWithMD5AndDES");

I've looked at:
java - convert Byte Array to Secret Key - Stack Overflow
java - Converted secret key into bytes, how to convert it back to secrect key? - Stack Overflow

and a number of other sites which didn't work, both of these however suggested the key = new SecretKeySpec. The actual key became: "[B@79fe3f51". Whereas the recreated key became: "[B@3e1d1648".So they are close, but not the same.I create the original key like this:

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public class Encryption { 
public Cipher dcipher, ecipher; 
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// decrypter Chipher instances
Encryption(String passPhrase) {
 
[code]....

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[Code] .....

From robosoul's response at StackOverflow, I simply inserted a condition for negative integers (line 12). True enough, the code worked and I was able to trace (pen and paper method) how it is converting the 0 and positive integers to words.

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Server:

Java Code:

package theGame;
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[Code] ....

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Also, if your are going to test this you will need to have the LWJGL libraries in your build path.

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[code]....

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[code].....

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[Code] .....

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Java Code:

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[Code] ....

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at program13strings.Program13Strings.main(Program13St rings.java:21)

Java Result: 1

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