需要匯入pinyin4j包。

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;


// 將漢字轉換為全拼  
    public static String getPingYin(String src) {  

        char[] t1 = null;  
        t1 = src.toCharArray();  
        String[] t2 = new String[t1.length];  
        HanyuPinyinOutputFormat t3 = new HanyuPinyinOutputFormat();  

        t3.setCaseType(HanyuPinyinCaseType.LOWERCASE);  
        t3.setToneType(HanyuPinyinToneType.WITHOUT_TONE);  
        t3.setVCharType(HanyuPinyinVCharType.WITH_V);  
        String t4 = ""
 
;  
        int t0 = t1.length;  
        try {  
            for (int i = 0; i < t0; i++) {  
                // 判斷是否為漢字字元  
                if (java.lang.Character.toString(t1[i]).matches(  
                        "[\\u4E00-\\u9FA5]+")) {  
                    t2 = PinyinHelper.toHanyuPinyinStringArray(t1[i], t3);  
                    t4 += t2[0
 
];  
                } else  
                    t4 += java.lang.Character.toString(t1[i]);  
            }  

            t4 = t4.replaceAll("[^a-zA-Z]", "");   //去除字串中非英文字元
            //System.out.println(t4);  
            return t4;  
        } catch (BadHanyuPinyinOutputFormatCombination e1) {  
            e1.printStackTrace();  
        }  
        return t4;  
    }