如何从java中的目录中获取资源包文件？

Question

I have a code to internationalize an application. I need to load the bundle file, go back twice from the running location and load it.

My code is,

bundle = ResourceBundle.getBundle("../../resources/basic",new Locale("fr", "CA"));
lblUsername.setText(bundle.getString("username"));
lblPassword.setText(bundle.getString("password"));
btnLogin.setText(bundle.getString("login"));

I got the following error.

java.util.MissingResourceException: Can't find bundle for base name ../../resources/basic, locale fr_CA
at java.util.ResourceBundle.throwMissingResourceException(Unknown Source)
at java.util.ResourceBundle.getBundleImpl(Unknown Source)
at java.util.ResourceBundle.getBundle(Unknown Source)
at com.daycare.ui.user.Login$4.itemStateChanged(Login.java:248)
at javax.swing.JComboBox.fireItemStateChanged(Unknown Source)
at javax.swing.JComboBox.selectedItemChanged(Unknown Source)
at javax.swing.JComboBox.contentsChanged(Unknown Source)
at javax.swing.AbstractListModel.fireContentsChanged(Unknown Source)
at javax.swing.DefaultComboBoxModel.setSelectedItem(Unknown Source)
at javax.swing.JComboBox.setSelectedItem(Unknown Source)
at javax.swing.JComboBox.setSelectedIndex(Unknown Source)
at com.daycare.ui.user.Login.<init>(Login.java:372)
at com.daycare.ui.user.Login$1.run(Login.java:104)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

How can I give the correct path of budle file?

Thanks in Advance!

Answer 1

As far as I remember the Bundle class will lookup by default on the current ClassLoader to find your resource. If you want to look a file on the filesystem, please use that instead:

File file = new File("the path of the folder containing the bundles");
URL[] urls = new URL[]{file.toURI().toURL()};
ClassLoader loader = new URLClassLoader(urls);
ResourceBundle rb = ResourceBundle.getBundle("the bundle name", your_locale, loader);

Answer 2

ResourceBundle.getBundle("../../resources/basic",new Locale("fr", "CA")); 

change the first argument to fully qualified class name and make sure that basic_fr_CA.properties exists.

for example if your file is at

/resource/basic_fr_CA.properties location, 

then change your java code to

ResourceBundle.getBundle("resources.basic",new Locale("fr", "CA"));

Answer 3

If your resource is in resources folder, you can use this way, which is better in that you do not have to deal with checked exceptions:

ClassLoader loader = new URLClassLoader(new URL[]{ I18NManager.class.getResource("path to folder containing bundles you want to load")});
ResourceBundle rb = ResourceBundle.getBundle("the bundle name", locale);

where I18NManager represents class which is loading resource.

I18NManager.class can be replaced with getClass() if it is not in static context.