学习EclipseNLS.doc

学习Eclipse NLS今天研究了一下Eclipse的NLS,觉得不错,与大家分享.pertieskey_1=hello world,here is NLSkey_2=hello 0, welcome to my blogkey_3=hello 0, please reply to1 if you like this article其中的 0 代表MessageHelper.bind(MessageHelper.key_2, gembin); 里的第1个参数,一次类推public class MessageHelper extends NLS /com.exmple.messages 中的点将会被转换成/ / 所以最终的路径为:com/exmple/perties private static final String BUNDLE_NAME = com.exmple.messages; /$NON-NLS-1$ public static String key_1; public static String key_2; static initializeMessages(BUNDLE_NAME, MessageHelper.class); /* * Bind the given messages substitution locations with the given string value. * * param message * the message to be manipulated * param binding * the object to be inserted into the message * return the manipulated String */ public static String bind(String message, Object binding) return NLS.bind(message, binding); /* * Bind the given messages substitution locations with the given string values. * * param message * the message to be manipulated * param binding1 * An object to be inserted into the message * param binding2 * A second object to be inserted into the message * return */ public static String bind(String message, Object binding1, Object binding2) return NLS.bind(message, binding1, binding2); /* * Bind the given messages substitution locations with the given string values. * * param message * the message to be manipulated bindings * param bindings * An array of objects to be inserted into the message * return the manipulated String */ public static String bind(String message, Object bindings) return NLS.bind(message, bindings); /* * Initialize the given class with the values from the specified message bundle. * * param bundleName - * fully qualified path of the class name * param clazz - * the class where the constants will exist */ SuppressWarnings(unchecked) public static void initializeMessages(String bundleName, Class clazz) NLS.initializeMessages(BUNDLE_NAME, MessageHelper.class); public static void main(String sp) String s=MessageHelper.bind(MessageHelper.key_2, hello); System.out.println(s); 什么是nls Eclipse SRC里的： No need Localized String 1 可代替ResourceBundle，用来处理资源文件*.properties,效率更好，更方便，很好的扩展性。当有Key没定义，会get a compile error.缺点是：必须维护2个文件1个Properties和1个Java文件，他们必须同步 请问绑定的类只能是当前类吗？而且不能用内部类作为绑定类？是可以的。请看如下例子：perties-key_1=Say 0 hello to 1 ! key_2=Say 0 hello to 1 ! key3=Say 0 hello to 1 ! key4=Say 0 hello to 1 ! TobeBindedMsg.java-public class TobeBindedMsg public static String key3;static class InnerMsgpublic static String key4;TestNLS.java-import org.eclipse.osgi.util.NLS;public class TestNLS private static final String BUNDLE_NAME = com.meccala.blog.util.message; /$NON-NLS-1$public static String key_2;static NLS.initializeMessages(BUNDLE_NAME, TestNLS.class);NLS.initializeMessages(BUNDLE_NAME, Inner.class);NLS.initializeMessages(BUNDLE_NAME, TobeBindedMsg.class);NLS.initializeMessages(BUNDLE_NAME, TobeBindedMsg.InnerMsg.class);static class Inner public static String key_1;public static void main(String ggg) String s = NLS.bind(Inner.key_1, 1, gembin);System.out.println(s);String s1 = NLS.bind(TestNLS.key_2, 2, gembin);System.out.println(s1);String s2 = NLS.bind(TobeBindedMsg.key3, 3, gembin);System.out.println(s2);String s3 = NLS.bind(TobeBindedMsg.InnerMsg.key4, 4, gembin);S