java中将汉语转成拼音

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开发中有时候有这样的需求，需要将汉语转换成拼音，比如将“北京”转成“BJ”或“BeiJing”，我在项目中用的是pinyin4j-2.5.0.jar，代码如下：

import net.sourceforge.pinyin4j.PinyinHelper;public class HanyuToPinyin {/* * 讲汉语转成拼音 */public static String ToHanyuPinyin(String sourceStr, boolean isUpperCase) {int sourceLen = sourceStr == null ? 0 : sourceStr.length();if (sourceLen < 1)return "";StringBuffer pinyinStrBuf = new StringBuffer();for (int idx = 0; idx < sourceLen; idx++) {String[] tmpData = PinyinHelper.toHanyuPinyinStringArray(sourceStr.charAt(idx));if (tmpData != null && tmpData.length > 0&& tmpData[0].length() > 0) {if (isUpperCase) {pinyinStrBuf.append(tmpData[0].substring(0,tmpData[0].length() - 1).toUpperCase());} else {pinyinStrBuf.append(tmpData[0].substring(0, tmpData[0].length() - 1));}}}return pinyinStrBuf.toString();}/* * 汉语转成拼音的首字母 */public static String ToHanyuPinyinHead(String sourceStr, boolean isUpperCase) {int sourceLen = sourceStr == null ? 0 : sourceStr.length();if (sourceLen < 1)return "";StringBuffer pinyinStrBuf = new StringBuffer();for (int idx = 0; idx < sourceLen; idx++) {String[] tmpData = PinyinHelper.toHanyuPinyinStringArray(sourceStr.charAt(idx));if (tmpData != null && tmpData.length > 0&& tmpData[0].length() > 0) {if (isUpperCase) {pinyinStrBuf.append(tmpData[0].substring(0,1).toUpperCase());} else {pinyinStrBuf.append(tmpData[0].substring(0, 1));}}//汉语中不能转换成拼音的部分(英数)会原样保存else{pinyinStrBuf.append(sourceStr.charAt(idx));}}return pinyinStrBuf.toString();}}