如何從java中的目錄中獲取資源包文件？

Question

我有一個國際化應用程序的代碼。 我需要加載捆綁文件，從運行位置返回兩次並加載它。

我的代碼是，

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

我收到以下錯誤。

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)

我怎樣才能給出budle文件的正確路徑？

提前致謝！

Answer 1

據我所知，默認情況下Bundle類將在當前ClassLoader上查找以查找您的資源。 如果要查看文件系統上的文件，請改用它：

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")); 

將第一個參數更改為完全限定的類名，並確保 basic_fr_CA.properties 存在。

例如，如果您的文件位於

/resource/basic_fr_CA.properties location, 

然后將您的java代碼更改為

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

Answer 3

如果您的資源在資源文件夾中，您可以使用這種方式，這樣更好，您不必處理已檢查的異常：

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);

其中I18NManager代表正在加載資源的類。

I18NManager.class不在靜態上下文中，可以用getClass()替換。