jfinal 国际化插件
由于项目有需求，看了下jfinal的国际化，没有格式化的功能，比较纠结，在已经的基础上修改了下。下面直接上干货，以插件的方式加载到jfinal就可以了
package com.jfinal.plugin.i18n;
import java.util.Locale;
import com.jfinal.core.Const;
import com.jfinal.plugin.IPlugin;
public class I18nPlugin implements IPlugin{
String string;
Locale locale = Locale.CHINA;
Integer max_age = Const.DEFAULT_I18N_MAX_AGE_OF_COOKIE;
public I18nPlugin(String string ){
this.string = string;
}
public I18nPlugin(String string ,Locale locale,Integer max_age){
this.string = string;
this.locale = locale;
this.max_age = max_age;
}
public boolean start() {
I18nKit.init(string, locale, max_age);
return true;
}
public boolean stop() {
return true;
}
public static void main(String[] args) {
new I18nPlugin("i18n.common").start();
System.out.println(I18nKit.getText("test1"));
System.out.println(I18nKit.getText("test",Locale.FRANCE));
System.out.println(I18nKit.getText("test"));
}
}
package com.jfinal.plugin.i18n;
import java.util.Enumeration;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import com.jfinal.common.MessageFormatKit;
import com.jfinal.core.Const;
import com.jfinal.log.Logger;
public class I18nKit {
private static Logger logger = Logger.getLogger(I18nKit.class);
private static String baseName;
private static Locale defaultLocale = Locale.getDefault();
private static int i18nMaxAgeOfCookie = Const.DEFAULT_I18N_MAX_AGE_OF_COOKIE;
private static final NullResourceBundle NULL_RESOURCE_BUNDLE = new NullResourceBundle();
private static final Object[] NULL_OBJECTARR = new Object[0];
private static final ConcurrentMap<String, ResourceBundle> bundlesMap = new ConcurrentHashMap<String, ResourceBundle>();
public static void init(String baseName, Locale defaultLocale, Integer i18nMaxAgeOfCookie) {
I18nKit.baseName = baseName;
if (defaultLocale != null)
I18nKit.defaultLocale = defaultLocale;
if (i18nMaxAgeOfCookie != null)
I18nKit.i18nMaxAgeOfCookie = i18nMaxAgeOfCookie;
}
public static Locale getDefaultLocale() {
return defaultLocale;
}
final static public int getI18nMaxAgeOfCookie() {
return i18nMaxAgeOfCookie;
}
private static ResourceBundle getResourceBundle(Locale locale) {
String resourceBundleKey = getresourceBundleKey(locale);
ResourceBundle resourceBundle = bundlesMap.get(resourceBundleKey);
if (resourceBundle == null) {
try {
resourceBundle = ResourceBundle.getBundle(baseName, locale);
bundlesMap.put(resourceBundleKey, resourceBundle);
}
catch (MissingResourceException e) {
resourceBundle = NULL_RESOURCE_BUNDLE;
}
}
return resourceBundle;
}
private static String getresourceBundleKey(Locale locale) {
return baseName +'_'+ locale.toString();
}
public static String getText(String key) {
return getText(key, defaultLocale, NULL_OBJECTARR);
}
/**
* 有格式化的国际化
* @param key
* @param locale
* @param objects
* @return
*/
public static String getText(String key, Locale locale , Object... objects) {
try{
String string = getString(key, locale);
if(objects.length >0){
return MessageFormatKit.format(string, locale,objects);
}else{
return string;
}
}catch (java.util.MissingResourceException e) {
logger.error(e.getMessage());
return key;
}
}
/**
* 无格式化的国际化
* @param key
* @param locale
* @return
*/
public static String getString(String key){
return getString(key, getDefaultLocale());
}
public static String getString(String key, Locale locale){
try{
return getResourceBundle(locale).getString(key);
}catch (java.util.MissingResourceException e) {
logger.error(e.getMessage());
return key;
}
}
public static String getText(String key, Locale locale) {
return getText(key, locale, NULL_OBJECTARR);
}
private static class NullResourceBundle extends ResourceBundle {
public Enumeration<String> getKeys() {
return null;
}
protected Object handleGetObject(String key) {
return null;
}
}
}
package com.jfinal.common;
import java.text.MessageFormat;
import java.util.Locale;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import com.jfinal.log.Logger;
import com.jfinal.plugin.i18n.I18nKit;
/**
* 字符格式化,主要用于国际化
* @author Administrator
*
*/
public class MessageFormatKit {
private static Logger logger = Logger.getLogger(MessageFormatKit.class);
private static final ConcurrentMap<MessageFormatKey, MessageFormat> messageFormats = new ConcurrentHashMap<MessageFormatKey, MessageFormat>();
public static String format(String value,Object...strings){
return format(value, I18nKit.getDefaultLocale(), strings);
}
public static String format(String value,Locale locale,Object...strings){
try {
MessageFormat mf = buildMessageFormat(value, locale);
return formatWithNullDetection(mf, strings);
} catch (Exception e) {
logger.error("formart error ："+value);
}
return value;
}
private static String formatWithNullDetection(MessageFormat mf, Object... args) {
String message = mf.format(args);
if ("null".equals(message)) {
return null;
} else {
return message;
}
}
private static MessageFormat buildMessageFormat(String pattern, Locale locale) {
MessageFormatKey key = new MessageFormatKey(pattern, locale);
MessageFormat format = messageFormats.get(key);
if (format == null) {
format = new MessageFormat(pattern);
format.setLocale(locale);
format.applyPattern(pattern);
messageFormats.put(key, format);
}
return format;
}
static class MessageFormatKey {
String pattern;
Locale locale;
MessageFormatKey(String pattern, Locale locale) {
this.pattern = pattern;
this.locale = locale;
}
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof MessageFormatKey)) return false;
final MessageFormatKey messageFormatKey = (MessageFormatKey) o;
if (locale != null ? !locale.equals(messageFormatKey.locale) : messageFormatKey.locale != null)
return false;
if (pattern != null ? !pattern.equals(messageFormatKey.pattern) : messageFormatKey.pattern != null)
return false;
return true;
}
public int hashCode() {
int result;
result = (pattern != null ? pattern.hashCode() : 0);
result = 29 * result + (locale != null ? locale.hashCode() : 0);
return result;
}
}
}