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 Test {
	
    /**
	 * 提取汉字的首字母。假设里面含有费中文字符则忽略之;假设全为非中文则返回""。
	 * @param caseType 当为1时获取的首字母为小写,否则为大写。
	 * @author 高焕杰
	 */
    public static String getPinYinHeadChar(String zn_str, int caseType) {
        if(zn_str != null && !zn_str.trim().equalsIgnoreCase("")) {
            char[] strChar = zn_str.toCharArray();
            // 汉语拼音格式输出类
            HanyuPinyinOutputFormat hanYuPinOutputFormat = new HanyuPinyinOutputFormat();
            // 输出设置。大写和小写,音标方式等
            if(1 == caseType) {
                hanYuPinOutputFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
            } else {
                hanYuPinOutputFormat.setCaseType(HanyuPinyinCaseType.UPPERCASE);
            }
            hanYuPinOutputFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            hanYuPinOutputFormat.setVCharType(HanyuPinyinVCharType.WITH_V);
            StringBuffer pyStringBuffer = new StringBuffer();
            for(int i=0; i<strChar.length; i++) {
                char c = strChar[i];
                char pyc = strChar[i];
                if(String.valueOf(c).matches("[\\u4E00-\\u9FA5]+")) {//是中文或者a-z或者A-Z转换拼音
                    try {
                        String[] pyStirngArray = PinyinHelper.toHanyuPinyinStringArray(strChar[i], hanYuPinOutputFormat);
                        if(null != pyStirngArray && pyStirngArray[0]!=null) {
                            pyc = pyStirngArray[0].charAt(0);
                            pyStringBuffer.append(pyc);
                        }
                    } catch(BadHanyuPinyinOutputFormatCombination e) {
                        e.printStackTrace();
                    }
                }
            }
            return pyStringBuffer.toString();
        }
        return null;
    }
    
	public static void main(String[] args) {
        String cnStr = "刘菲菲";
        System.out.println(getPinYinHeadChar(cnStr, 1)); //输出lff
		System.out.println(getPinYinHeadChar(cnStr, 2)); //输出LFF
	}
}
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