public static Object readData(String filePath) {
Object result = null;
try {
filePath = StringUtil.checkFullPathLength(filePath);
FileLockManager.startFileRead(filePath);
if (isValid(filePath)) {
FileInputStream os = new FileInputStream(filePath);
XMLDecoder decoder = new XMLDecoder(os);
decoder.setExceptionListener(
new ExceptionListener() {
public void exceptionThrown(Exception exception) {
log.error("readData(): error", exception);
}
});
result = decoder.readObject();
decoder.close();
}
} catch (java.io.FileNotFoundException fnfe) {
log.trace("readData(): file not found exception, filePath=" + filePath);
} catch (Error e) {
log.error("readData(): error, filePath=" + filePath, e);
} catch (Exception e) {
log.error("readData(): exception, filePath=" + filePath, e);
} finally {
FileLockManager.endFileRead(filePath);
}
return result;
}
/**
* Unmarshals the given serialized object into the corresponding instance using
* <i>java.beans.XMLDecoder</i>.
*
* @param classLoader the class loader to use (null for the standard one)
* @param xml XML serialized form
* @return the unmarshalled instance
* @throws BeanException in case of unmarshalling errors
*/
public static Object unmarshal(ClassLoader classLoader, String xml) throws BeanException {
XMLDecoder dec = null;
ClassLoader oldClassLoader = null;
if (classLoader != null) {
oldClassLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(classLoader);
}
BeanExceptionListener exceptionListener = new BeanExceptionListener();
try {
ByteArrayInputStream is = new ByteArrayInputStream(xml.getBytes());
Object ret = null;
dec = new XMLDecoder(is);
dec.setExceptionListener(exceptionListener);
ret = dec.readObject();
dec.close();
dec = null;
if (exceptionListener.exceptionThrown()) {
Throwable t = exceptionListener.getException();
if (t.getCause() != null) {
t = t.getCause();
}
throw new BeanInstantiationException("Error creating bean", t);
}
return ret;
} finally {
if (dec != null) {
dec.close();
}
if (classLoader != null) {
Thread.currentThread().setContextClassLoader(oldClassLoader);
}
}
}
