JAVA获得汉字首字母

淡淡的烟草味﹌ 2022-05-29 09:23 221阅读 0赞

## JAVA获得汉字首字母 ##

在开发中我们会遇到需要提出汉字中的拼音的首字母、提出汉字的拼音等，这时可以用 pinyin4j.jar来处理。

pinyin4j.jar 的Maven依赖

<dependency>
        <groupId>com.belerweb</groupId>
        <artifactId>pinyin4j</artifactId>
        <version>2.5.1</version>
    </dependency>

下面提供一个工具类

import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    import net.sourceforge.pinyin4j.PinyinHelper;
    import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
    import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
    import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
    import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType;
    import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;
    
    public class PinyinUtils { 
    
        /** * 获得汉语拼音首字母 * * @param chines 汉字 * * @return */
        public static String getAlpha(String chines) {
            chines = cleanChar(chines);
            String pinyinName = "";
            char[] nameChar = chines.toCharArray();
            HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
            defaultFormat.setCaseType(HanyuPinyinCaseType.UPPERCASE);
            defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            for (int i = 0; i < nameChar.length; i++) {
                if (nameChar[i] > 128) {
                    try {
                        pinyinName += PinyinHelper.toHanyuPinyinStringArray(nameChar[i], defaultFormat)[0].charAt(0);
                    } catch (BadHanyuPinyinOutputFormatCombination e) {
                        e.printStackTrace();
                    }
                } else {
                    pinyinName += nameChar[i];
                }
            }
            return pinyinName;
        }
    
        /** * 将字符串中的中文转化为拼音,英文字符不变 * * @param inputString 汉字 * * @return */
        public static String getPingYin(String inputString) {
            HanyuPinyinOutputFormat format = new HanyuPinyinOutputFormat();
            format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
            format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            format.setVCharType(HanyuPinyinVCharType.WITH_V);
            String output = "";
            if (inputString != null && inputString.length() > 0 && !"null".equals(inputString)) {
                char[] input = inputString.trim().toCharArray();
                try {
                    for (int i = 0; i < input.length; i++) {
                        if (java.lang.Character.toString(input[i]).matches("[\\u4E00-\\u9FA5]+")) {
                            String[] temp = PinyinHelper.toHanyuPinyinStringArray(input[i], format);
                            output += temp[0];
                        } else
                            output += java.lang.Character.toString(input[i]);
                    }
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                }
            } else {
                return "*";
            }
            return output;
        }
    
        /** * 汉字转换位汉语拼音首字母，英文字符不变 * * @param chines * 汉字 * @return 拼音 */
        public static String converterToFirstSpell(String chines) {
            chines = cleanChar(chines);
            String pinyinName = "";
            char[] nameChar = chines.toCharArray();
            HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
            defaultFormat.setCaseType(HanyuPinyinCaseType.UPPERCASE);
            defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            for (int i = 0; i < nameChar.length; i++) {
                if (nameChar[i] > 128) {
                    try {
                        pinyinName += PinyinHelper.toHanyuPinyinStringArray(nameChar[i], defaultFormat)[0].charAt(0);
                    } catch (BadHanyuPinyinOutputFormatCombination e) {
                        e.printStackTrace();
                    }
                } else {
                    pinyinName += nameChar[i];
                }
            }
            return pinyinName;
        }
    }

这个工具类大多数情况下够用了。