When encountering a requirement, you need to sort by the first letter of the user's name. This needs to obtain the pinyin corresponding to the Chinese characters, and suddenly I remembered the jar package pinyin4j, so I started to write a tool class for converting Chinese characters to pinyin. Record it here for future reference
1. Pom dependency
<!-- https://mvnrepository.com/artifact/com.belerweb/pinyin4j --><dependency><groupId>com.belerweb</groupId><artifactId>pinyin4j</artifactId><version>2.5.0</version></dependency>
2. Code
This tool class implements the two methods of obtaining the pinyin of Chinese characters and obtaining the initials of Chinese characters
package com.zxy.timecard.utils;import net.sourceforge.pinyin4j.PinyinHelper;/*** 拼音工具类* @author ZENG.XIAO.YAN* @date 2018年5月9日**/public class PinYinUtils {/*** 获取汉字首字母的方法。如： 张三 --> ZS* 说明：暂时解决不了多音字的问题，只能使用取多音字的第一个音的方案* @param hanzi 汉子字符串* @return 大写汉子首字母; 如果都转换失败,那么返回null*/public static String getHanziInitials(String hanzi) {String result = null;if(null != hanzi && !"".equals(hanzi)) {char[] charArray = hanzi.toCharArray();StringBuffer sb = new StringBuffer();for (char ch : charArray) {// 逐个汉字进行转换， 每个汉字返回值为一个String数组（因为有多音字）String[] stringArray = PinyinHelper.toHanyuPinyinStringArray(ch);if(null != stringArray) {sb.append(stringArray[0].charAt(0));}}if(sb.length() > 0) {result = sb.toString().toUpperCase();}}return result;}/*** 获取汉字拼音的方法。如： 张三 --> zhangsan* 说明：暂时解决不了多音字的问题，只能使用取多音字的第一个音的方案* @param hanzi 汉子字符串* @return 汉字拼音; 如果都转换失败,那么返回null*/public static String getHanziPinYin(String hanzi) {String result = null;if(null != hanzi && !"".equals(hanzi)) {char[] charArray = hanzi.toCharArray();StringBuffer sb = new StringBuffer();for (char ch : charArray) {// 逐个汉字进行转换， 每个汉字返回值为一个String数组（因为有多音字）String[] stringArray = PinyinHelper.toHanyuPinyinStringArray(ch);if(null != stringArray) {// 把第几声这个数字给去掉sb.append(stringArray[0].replaceAll("\\d", ""));}}if(sb.length() > 0) {result = sb.toString();}}return result;}public static void main(String[] args) {System.out.println(PinYinUtils.getHanziInitials("袁素芳"));System.out.println(PinYinUtils.getHanziPinYin("袁素芳"));}}
3. Summary
The functions in the pinyin4j jar are all encapsulated, and they only need to be called directly; so the tool class is relatively simple to write.
The existing problem: the polyphonic word is not handled well, only the first pronunciation of the word is taken