XML reading issues

[Mathew Lee]

Hi,
I was trying to create custom resource bundle using XML file instead of routine property file loading as per following link
http://www.java2s.com/Code/Java/JDK-6/XMLresourcebundle.htm
I did everything as given in the link. But I was not able to execute the program when I run it. The java program supposed to read the Strings.XML data and similar other XML files based on the arguments we pass in newBundle method. Please advise.
Any links, resources, suggestions, sample code highly appreciated. Thanks in advance.

[Mathew Lee]

I have couple of classes

   

import java.io.IOException;
import java.io.InputStream;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Properties;
import java.util.ResourceBundle;
import java.util.Set;

class XMLResourceBundle extends ResourceBundle {
  private Properties props;

  XMLResourceBundle(InputStream stream) throws IOException {
    props = new Properties();
    props.loadFromXML(stream);
  }

  protected Object handleGetObject(String key) {
    return props.getProperty(key);
  }

  public Enumeration<String> getKeys() {
    Set<String> handleKeys = props.stringPropertyNames();
    return Collections.enumeration(handleKeys);
  }
} 

other class looks like

 
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import java.util.ResourceBundle;

public class Test extends ResourceBundle.Control {

  private static String XML = "xml";

  public List<String> getFormats(String baseName) {
    return Collections.singletonList(XML);
 
  }

  public ResourceBundle newBundle(String baseName, Locale locale, String format,
      ClassLoader loader, boolean reload) throws IllegalAccessException, InstantiationException,
      IOException {
	 
    if ((baseName == null) || (locale == null) || (format == null) || (loader == null)) {
      throw new NullPointerException();
    }
    ResourceBundle bundle = null;
    
    if (!format.equals(XML)) {
      return null;
    }

    String bundleName = toBundleName(baseName, locale);
    String resourceName = toResourceName(bundleName, format);

    URL url = loader.getResource(resourceName);
    if (url == null) {
      return null;
    }

    URLConnection connection = url.openConnection();
    
    if (connection == null) {
      return null;
    }
    if (reload) {
      connection.setUseCaches(false);
    }
    InputStream stream = connection.getInputStream();
    if (stream == null) {
      return null;
    }
    
    BufferedInputStream bis = new BufferedInputStream(stream);
    bundle = new XMLResourceBundle(bis);
    System.out.println("23");
    bis.close();
   
    return bundle;
 
  }

  public static void main(String args[]) {
	try{
		Test test=new Test();
	
	ClassLoader cl=ClassLoader.getSystemClassLoader();
	
	test.newBundle("C:/xyz/abc/Strings.xml", Locale.ENGLISH, "XML", cl, false);
	
    ResourceBundle bundle = ResourceBundle.getBundle("Strings", new Test());
    String string = bundle.getString("Key");

    System.out.println("Key: " + string);
	}catch (Exception e) {
		// TODO: handle exception
	}
  }
}   

xml is at location
C:/xyz/abc

Please advise

[Pradeep Katipamula]

Hi,

I didn't change your code much (only removed few lines). Below is the code

 
public static void main(String args[]) {
	try{
                ResourceBundle bundle = ResourceBundle.getBundle("com/test/myresources", new Test());
                String string = bundle.getString("Key");
                System.out.println("Key: " + string);
	}catch (Exception e) {
          }
}

The Resources bundle reads the files through the classloader. So here i copied the xml properties file 'myresources' to the packges structure 'com.test' and updated the same in the above code, which solves the problem.

I hope this helps

If you have any other requirements just let me know.

Pradeep

[Pradeep Katipamula]

And i am not sure why you have posted this under 'JSF'