Merge pull request lets-blade#193 from ccqy66/dev

✨ lets-blade#192 add i18n support

src/main/java/com/blade/kit/I18nUtils.java

@@ -0,0 +1,84 @@
+package com.blade.kit;
+
+import lombok.NoArgsConstructor;
+
+import java.text.MessageFormat;
+import java.util.Locale;
+import java.util.Map;
+import java.util.ResourceBundle;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.regex.Pattern;
+
+/**
+ * @author <a href="mailto:[email protected]" target="_blank">ccqy66</a>
+ * @Date: 2018/1/8
+ *
+ * file name format：i18n_{language}_{country}.properties
+ * for example:i18n_zh_CN.properties
+ * <p>How to use</p>
+ * i18n_zh_CN.properties:
+ * name=ccqy66
+ * ...
+ *
+ * public String getConfig(String key) {
+ * return I18nUtils.getInstance("i18n_zh_CN.properties").get(key);
+ * }
+ * or
+ * public String getConfig(String key) {
+ * return I18nUtils.getInstance(new Locale("zh","CN")).get(key);
+ * }
+ *
+ */
+@NoArgsConstructor
+public class I18nUtils {
+ private static Map<String,ResourceHolder> CACHE = new ConcurrentHashMap<>();
+ private static Pattern pattern = Pattern.compile("_");
+
+ public static synchronized ResourceHolder getInstance(String baseName){
+ return createResourceHolder(baseName,null);
+ }
+ public static synchronized ResourceHolder getInstance(Locale locale) {
+ return createResourceHolder(null,locale);
+ }
+ private static ResourceHolder createResourceHolder(String baseName,Locale locale) {
+ Tuple2<String,Locale> localeModel = toLocaleModel(baseName, locale);
+ ResourceHolder holder = CACHE.get(localeModel._1());
+ if (null != holder) {
+ return holder;
+ }
+ holder = new ResourceHolder(ResourceBundle.getBundle(localeModel._1(),localeModel._2()));
+ CACHE.putIfAbsent(localeModel._1(),holder);
+ return holder;
+ }
+ public static Tuple2<String,Locale> toLocaleModel(String baseName,Locale locale) {
+ if (StringKit.isBlank(baseName)) {
+ return new Tuple2<>("i18n_"+locale.getLanguage()+"_"+locale.getCountry(),locale);
+ }else {
+ String[] baseNames = pattern.split(baseName);
+ if (baseNames != null && baseNames.length == 3) {
+ return new Tuple2<>(baseName,new Locale(baseNames[1],baseNames[2]));
+ }
+ throw new IllegalArgumentException("baseName illegal,name format is :i18n_{language}_{country}.properties," +
+ "for example:i18n_zh_CN.properties");
+ }
+ }
+
+ public static class ResourceHolder {
+ private ResourceBundle resourceBundle;
+ public ResourceHolder(ResourceBundle resourceBundle) {
+ this.resourceBundle = resourceBundle;
+ }
+ public String get(String key) {
+ return resourceBundle.getString(key);
+ }
+ public Object getObject(String key) {
+ return resourceBundle.getObject(key);
+ }
+ public boolean containsKey(String key) {
+ return resourceBundle.containsKey(key);
+ }
+ public String format(String key,String ... params) {
+ return MessageFormat.format(resourceBundle.getString(key),params);
+ }
+ }
+}

src/main/java/com/blade/kit/Tuple2.java

@@ -0,0 +1,20 @@
+package com.blade.kit;
+
+/**
+ * @author <a href="mailto:[email protected]" target="_blank">ccqy66</a>
+ */
+public class Tuple2<E,T> {
+ private E e;
+ private T t;
+
+ public Tuple2(E e,T t) {
+ this.e = e;
+ this.t = t;
+ }
+ public E _1() {
+ return e;
+ }
+ public T _2() {
+ return t;
+ }
+}

src/test/java/com/blade/kit/I18nUtilsTest.java

@@ -0,0 +1,25 @@
+package com.blade.kit;
+
+import org.junit.Test;
+
+import java.util.Locale;
+
+/**
+ * Created with IntelliJ IDEA.
+ * User: chenchen42
+ * Date: 2018/1/8
+ * Time: 下午12:10
+ * To change this template use File | Settings | File Templates.
+ */
+public class I18nUtilsTest {
+ @Test
+ public void testI18nByKey() {
+ String name = I18nUtils.getInstance("i18n_en_US").get("name");
+ assert name.equals("ccqy66");
+ }
+ @Test
+ public void testI18nByLocale() {
+ String name = I18nUtils.getInstance(new Locale("zh","CN")).get("name");
+ assert name.equals("ccqy66");
+ }
+}

src/test/resources/i18n_en_US.properties

@@ -0,0 +1 @@
+name=ccqy66

src/test/resources/i18n_zh_CN.properties

@@ -0,0 +1 @@
+name=ccqy66