org.cesecore.util.XmlSerializer Maven / Gradle / Ivy
/*************************************************************************
* *
* CESeCore: CE Security Core *
* *
* This software is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or any later version. *
* *
* See terms of license at gnu.org. *
* *
*************************************************************************/
package org.cesecore.util;
import java.beans.XMLDecoder;
import java.beans.XMLEncoder;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* This is a helper classed that handles the serialization to and deserialization from XML.
*
* Stored Strings in the input are stored as Base64 encoded strings.
*
* @version $Id: XmlSerializer.java 25700 2017-04-18 13:53:53Z samuellb $
*/
public class XmlSerializer {
@SuppressWarnings("unchecked")
public static Map decode(final String input) {
Map ret = null;
if (input != null) {
try {
XMLDecoder decoder = new XMLDecoder(new ByteArrayInputStream(input.getBytes("UTF8")));
final LinkedHashMap h = (LinkedHashMap) decoder.readObject();
decoder.close();
// Handle Base64 encoded string values
ret = new Base64GetHashMap(h);
} catch (UnsupportedEncodingException e) {
// Fatal. No point in handling the lack of UTF-8
throw new RuntimeException(e);
}
}
return ret;
}
private static String encodeInternal(final Map input, final boolean encodeNonPrintableWithBase64) {
String ret = null;
if (input != null) {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final XMLEncoder encoder = new XMLEncoder(baos);
final LinkedHashMap linkedHashMap = encodeNonPrintableWithBase64 ? new Base64PutHashMap() : new LinkedHashMap<>();
// Copy one by one through the get() method, so the values get transformed if needed
for (String key : input.keySet()) {
linkedHashMap.put(key, input.get(key));
}
encoder.writeObject(linkedHashMap);
encoder.close();
try {
ret = baos.toString("UTF8");
} catch (UnsupportedEncodingException e) {
// Fatal. No point in handling the lack of UTF-8
throw new RuntimeException(e);
}
}
return ret;
}
/**
* Serializes a map using Java's XMLEncoder. Non ASCII printable characters are Base64 encoded.
*/
public static String encode(final Map input) {
return encodeInternal(input, true);
}
/**
* Serializes a map using Java's XMLEncoder. No Base64 encoding is done of non-printable characters.
*/
public static String encodeWithoutBase64(final Map input) {
return encodeInternal(input, false);
}
}