Java分词_pinyin4j

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)));  
 
}  
 
}