新浪旧事-JAVA之汉字转拼音

        在JAVA中，把汉字转化成拼音进行排序是一种很常见的做法，而我们经常会用到一个工具——pinyin4j。本文将介绍pinyin4j的用法。
       1. 下载：http://pinyin4j.sourceforge.net/
       2. Pinyin4jUtil.java

package test.util;
import java.util.HashSet;
import java.util.Set;
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 Pinyin4jUtil
{
    public static String makeStringByStringSet(Set<String> stringSet) {
        StringBuilder str = new StringBuilder();
        int i = 0;
        for (String s : stringSet) {
            if (i == stringSet.size() - 1) {
                str.append(s);
            } else {
                str.append(s + ",");
            }
            i++;
        }
        return str.toString().toLowerCase();
    }
    public static Set<String> getPinyin(String src) {
        if (src != null && !src.trim().equalsIgnoreCase("")) {
            char[] srcChar;
            srcChar = src.toCharArray();
            // 汉语拼音格式输出类
            HanyuPinyinOutputFormat hanYuPinOutputFormat = new HanyuPinyinOutputFormat();
            // 输出设置，大小写，音标方式等
            hanYuPinOutputFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
            hanYuPinOutputFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            hanYuPinOutputFormat.setVCharType(HanyuPinyinVCharType.WITH_V);
            String[][] temp = new String[src.length()][];
            for (int i = 0; i < srcChar.length; i++) {
                char c = srcChar[i];
                // 是中文或者a-z或者A-Z转换拼音(我的需求，是保留中文或者a-z或者A-Z)
                if (String.valueOf(c).matches("[\\u4E00-\\u9FA5]+")) {
                    try {
                        temp[i] = PinyinHelper.toHanyuPinyinStringArray(
                        srcChar[i], hanYuPinOutputFormat);
                    } catch (BadHanyuPinyinOutputFormatCombination e) {
                        e.printStackTrace();
                    }
                } else if (((int) c >= 65 && (int) c <= 90) || ((int) c >= 97 && (int) c <= 122)) {
                    temp[i] = new String[]{ String.valueOf(srcChar[i]) };
                } else {
                    temp[i] = new String[]{ "" };
                }
            }
            String[] pingyinArray = Exchange(temp);
            Set<String> pinyinSet = new HashSet<String>();
            for (int i = 0; i < pingyinArray.length; i++) {
                pinyinSet.add(pingyinArray[i]);
            }
            return pinyinSet;
        }
        return null;
    }
    private static String[] Exchange(String[][] strJaggedArray) {
        String[][] temp = DoExchange(strJaggedArray);
        return temp[0];
    }
    private static String[][] DoExchange(String[][] strJaggedArray) {
        int len = strJaggedArray.length;
        if (len >= 2) {
            int len1 = strJaggedArray[0].length;
            int len2 = strJaggedArray[1].length;
            int newlen = len1 * len2;
            String[] temp = new String[newlen];
            int Index = 0;
            for (int i = 0; i < len1; i++) {
                for (int j = 0; j < len2; j++) {
                    temp[Index] = strJaggedArray[0][i] + strJaggedArray[1][j];
                    Index++;
                }
            }
            String[][] newArray = new String[len - 1][];
            for (int i = 2; i < len; i++) {
                newArray[i - 1] = strJaggedArray[i];
            }
            newArray[0] = temp;
            return DoExchange(newArray);
        } else {
            return strJaggedArray;
        }
    }
}

3.使用

String pinyin = PinYin4jUtil.makeStringByStringSet(PinYin4jUtil.getPinyin( chineseStr )) ；