diff options
Diffstat (limited to 'wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18nJsonUtil.java')
-rw-r--r-- | wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18nJsonUtil.java | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18nJsonUtil.java b/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18nJsonUtil.java new file mode 100644 index 0000000..e3746dc --- /dev/null +++ b/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18nJsonUtil.java @@ -0,0 +1,170 @@ +/** + * Copyright 2017 ZTE Corporation. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.openo.baseservice.i18n; + +import com.fasterxml.jackson.core.JsonParseException; +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.JsonMappingException; +import com.fasterxml.jackson.databind.ObjectMapper; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.Locale; +import java.util.Set; +import java.util.concurrent.locks.Lock; +import java.util.concurrent.locks.ReentrantLock; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +final class I18nJsonUtil { + + private static I18nJsonUtil util; + private static Lock lock = new ReentrantLock(); + private ObjectMapper objectMapper; + + public I18nJsonUtil(ObjectMapper objectMapper) { + this.objectMapper = objectMapper; + } + + <T extends Object> T readFromJson(InputStream ins, Class<T> clazz) + throws JsonParseException, JsonMappingException, IOException { + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + byte[] bs = new byte[1024 * 10]; + int length = -1; + while ((length = ins.read(bs)) > 0) { + baos.write(bs, 0, length); + } + bs = baos.toByteArray(); + + byte[] ubs = null; + if (bs.length > 3) { + // 删除bom头 -17, -69, -65 + if (bs[0] == -17 && bs[1] == -69 && bs[2] == -65) { + ubs = new byte[bs.length - 3]; + System.arraycopy(bs, 3, ubs, 0, ubs.length); + } + } + if (ubs == null) { + ubs = bs; + } + return objectMapper.readValue(ubs, clazz); + } + + <T extends Object> T readFromJson(String str, Class<T> clazz) + throws JsonParseException, JsonMappingException, IOException { + return objectMapper.readValue(str, clazz); + } + + String writeToJson(Object obj) throws JsonProcessingException { + return objectMapper.writeValueAsString(obj); + } + + static I18nJsonUtil getInstance(ObjectMapper objectMapper) { + if (util == null) { + lock.lock(); + try { + if (util == null) { + if (objectMapper == null) { + objectMapper = new ObjectMapper(); + } + util = new I18nJsonUtil(objectMapper); + } + } finally { + lock.unlock(); + } + } + return util; + } + + static I18nJsonUtil getInstance() { + return getInstance(null); + } +} + + +/** + * 国际化转换工具 + * + * @author 10163976 + */ +class I18nLocaleTransfer { + + private static Logger LOG = LoggerFactory.getLogger(I18nLocaleTransfer.class); + + /** + * 方言转换<br> 如果存在直接返回<br> 如果不存在,则获取语言进行模糊匹配,未匹配上则返回默认方言<br> + * + * @param theLocale 待转换方言 + * @param locales 存在的方言 + * @return 转换后的方言 + */ + public static String transfer(Locale theLocale, Set<String> locales) { + if (locales == null || locales.isEmpty()) { + LOG.debug("locales is NULL or empty"); + return null; + } + if (theLocale == null) { + String result = fetchDefault(locales); + LOG.debug("transfer NULL --> " + result + " in " + locales); + return result; + } + String locale = theLocale.toString(); + if (locale.isEmpty()) { + String result = fetchDefault(locales); + LOG.debug("transfer EMPTY --> " + result + " in " + locales); + return result; + } + // 精确匹配 + if (locales.contains(locale)) { + return locale; + } + + // 根据语言模糊匹配 + String language = theLocale.getLanguage(); + if (locales.contains(language)) { + LOG.debug("transfer " + locale + " --> " + language + " in " + locales); + return language; + } + + language = language + "_"; + for (String temp : locales) { + if (temp.startsWith(language)) { + LOG.debug("transfer " + locale + " --> " + temp + " in " + locales); + return temp; + } + } + String result = fetchDefault(locales); + LOG.debug("transfer " + locale + " --> " + result + " in " + locales); + return result; + } + + /** + * 返回默认方言,优先级为en,en_US,zh,zh_CN,如果都不存在,则随机返回一个 + */ + private static String fetchDefault(Set<String> locales) { + if (locales.contains("en")) { + return "en"; + } else if (locales.contains("en_US")) { + return "en_US"; + } + if (locales.contains("zh")) { + return "zh"; + } else if (locales.contains("zh_CN")) { + return "zh_CN"; + } + return locales.iterator().next(); + } +} |