String file = System.getProperty("user.dir") + java.io.File.separatorChar + "lang" + java.io.File.separatorChar + "books";
System.out.println(file);
ResourceBundle source = ResourceBundle.getBundle(file);
打印 E:\java\Books\lang\books我的E:\java\Books\lang\有个books_zh_CN.properties文件可Exception in thread "AWT-EventQueue-0" java.util.MissingResourceException: Can't find bundle for base name E:\java\Books\lang\books, locale zh_CN
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