JAVA汉字转拼音

在JAVA中，我们可以使用pinyin4j将汉字转换为汉字拼音，示例代码如下：

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;

/**
 * 汉字转拼音工具类，保留汉字与字母，其他部分忽略，需添加jar包：pinyin4j-2.5.0.jar
 * 
 * @author jianggujin
 * 
 */
public class CharacterPinYinConvert
{
   /** 设置汉字拼音输出的格式 **/
   HanyuPinyinOutputFormat format = null;

   /**
    * 默认构造方法，初始化汉字拼音输出格式
    */
   public CharacterPinYinConvert()
   {
      // 设置汉字拼音输出的格式
      format = new HanyuPinyinOutputFormat();
      // 不使用音调标记，
      format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
      // 如果使用WITH_TONE_MARK，则必须指定setVCharType为WITH_U_UNICODE，否则报错
      // fmt.setToneType(HanyuPinyinToneType.WITH_TONE_MARK);
      // fmt.setVCharType(HanyuPinyinVCharType.WITH_U_UNICODE);

      // 韵母“驴”(lu->lv)使用V来代替
      format.setVCharType(HanyuPinyinVCharType.WITH_V);
      // 返回的拼音为小字字母
      format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
   }

   /**
    * 汉字转拼音
    * 
    * @param text
    *           待转换字符串
    * @return allPinYin
    */
   public String toPinYin(String text)
   {
      StringBuilder allPinYin = new StringBuilder();
      for (int i = 0; i < text.length(); i++)
      {
         char wordChar = text.charAt(i);
         // 如果为汉字
         if (Character.toString(wordChar).matches("[\\u4E00-\\u9FA5]"))
         {
            try
            {
               // 返回汉字的全部拼音(因为有些汉字为多音字，否则只返回一个)
               String[] pinYinArray = PinyinHelper.toHanyuPinyinStringArray(
                     wordChar, format);
               // 取第一个拼音
               String pinYin = pinYinArray[0];
               if (pinYin != null)
               {
                  allPinYin.append(pinYin);
               }
            }
            catch (Exception e)
            {
            }
         }
         else if (((int) wordChar >= 65 && (int) wordChar <= 90)
               || ((int) wordChar >= 97 && (int) wordChar <= 122))
         {
            allPinYin.append(wordChar);
         }
      }
      return allPinYin.toString();
   }

   /**
    * 汉字转拼音
    * 
    * @param text
    *           待转换字符串
    * @return pinYinSet
    */
   public Set<String> toPinYins(String text)
   {
      char[] srcChar = text.toCharArray();

      String[][] temp = new String[text.length()][];
      for (int i = 0; i < srcChar.length; i++)
      {
         char c = srcChar[i];
         if (String.valueOf(c).matches("[\\u4E00-\\u9FA5]"))
         {
            try
            {
               temp[i] = PinyinHelper.toHanyuPinyinStringArray(srcChar[i],
                     format);
            }
            catch (Exception e)
            {
            }
         }
         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 = doExchange(temp)[0];
      Set<String> pinyinSet = new HashSet<String>();
      for (int i = 0; i < pingyinArray.length; i++)
      {
         pinyinSet.add(pingyinArray[i]);
      }
      return pinyinSet;
   }

   /**
    * 处理转换
    * 
    * @return
    */
   private 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;
      }
   }

   public static void main(String[] args)
   {
      CharacterPinYinConvert convert = new CharacterPinYinConvert();
      String name = "蒋固金";
      System.out.println(convert.toPinYins(name));
      String muti = "囤";
      System.out.println(convert.toPinYins(muti));
   }
}

运行结果：
[jianggujin]
[dun, tun]