Java汉字转拼音工具

1. maven依赖

<dependency>
    <groupId>com.belerweb</groupId>
    <artifactId>pinyin4j</artifactId>
    <version>2.5.0</version>
</dependency>

2. 工具类封装

package comg.yang.httpstest.controller.domain;

import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PinYinUtils {

    /***
     * ^[\u2E80-\u9FFF]+$ 匹配所有东亚区的语言
     * ^[\u4E00-\u9FFF]+$ 匹配简体和繁体
     * ^[\u4E00-\u9FA5]+$ 匹配简体
     */
    // private static final String REG_EXP = "^[\u4E00-\u9FFF]+$";

    private static final Pattern PATTERN = Pattern.compile("^[\u4E00-\u9FFF]+$");

    /**
     * 汉字转拼音首写字母
     *
     * @param chinese
     * @return
     */
    public static String convertChinese2Capital(String chinese) {
        return convertChinese2Pinyin(chinese, false);
    }

    /***
     * 将汉字转成拼音(取首字母或全拼)
     *
     * @param hanzi
     * @param flag  是否全拼
     * @return
     */
    public static String convertChinese2Pinyin(String hanzi, boolean flag) {
        if (hanzi == null || "".equals(hanzi.trim())) {
            return "";
        }

        StringBuilder sb = new StringBuilder();
        char[] charArray = hanzi.toCharArray();
        for (char unit : charArray) {
            if (match(String.valueOf(unit))) {  // 是汉字，则转拼音
                String pinyin = convertSingleHanzi2Pinyin(unit);
                if (flag) {
                    sb.append(pinyin);
                } else {
                    sb.append(pinyin.charAt(0));
                }
            } else {
                sb.append(unit);
            }
        }
        return sb.toString();
    }

    /**
     * 将单个汉字转成拼音
     *
     * @param hanzi
     * @return
     */
    private static String convertSingleHanzi2Pinyin(char hanzi) {
        HanyuPinyinOutputFormat outputFormat = new HanyuPinyinOutputFormat();
        outputFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        String[] res;
        StringBuilder sb = new StringBuilder();
        try {
            res = PinyinHelper.toHanyuPinyinStringArray(hanzi, outputFormat);
            sb.append(res[0]);  // 对于多音字，只用第一个拼音
        } catch (Exception e) {
            return "";
        }
        return sb.toString();
    }

    /***
     * @param str   源字符串
     * @return 是否匹配
     */
    public static boolean match(String str) {
        Matcher matcher = PATTERN.matcher(str);
        return matcher.find();
    }

    public static void main(String[] args) {
        System.err.println("全拼：" + PinYinUtils.convertChinese2Pinyin("大哥大嫂，过年好！", true));
        System.err.println("首字母：" + PinYinUtils.convertChinese2Capital("大哥大嫂，过年好！"));
    }

}

3. 测试输出

全拼：dagedasao，guonianhao！
首字母：dgds，gnh！