java开源类库pinyin4j的使用

java开源类库pinyin4j的使用

http://wister.iteye.com/blog/334562

最近CMS系统为了增加查询的匹配率，需要增加拼音检索字段,在网上找到了pinyin4j的java开源类库，提供中文转汉语拼音(并且支持多音字)，呵呵，看了看他的demo，决定就用它了，因为我在实际使用的时候，需要考虑多音字的不同排列组合，下面的代码就是支持多音字的.

pinyin4j官方网址:http://pinyin4j.sourceforge.net/

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 pinyin4j {  /**  * 字符串集合转换字符串(逗号分隔)  * @author wyh  * @param stringSet  * @return  */ 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(); }  /**  * 获取拼音集合  * @author wyh  * @param src  * @return Set<String>  */ 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; }  /**  * 递归  * @author wyh  * @param strJaggedArray  * @return  */    public static String[] Exchange(String[][] strJaggedArray){        String[][] temp = DoExchange(strJaggedArray);        return temp[0];           }       /**     * 递归     * @author wyh     * @param strJaggedArray     * @return     */    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;           }    }    /**  * @param args  */ public static void main(String[] args) {  String str = "单田芳";  System.out.println(makeStringByStringSet(getPinyin(str)));}}

控制台输出：dantianfang,shantianfang,chantianfang