Common type conversion Method tool class

Function: hexadecimal string with byte array, character to Byte, blob type to byte array, Arabic to Chinese lowercase

1 ImportJava.io.BufferedInputStream;2 Importjava.io.IOException;3 ImportJava.sql.Blob;4 5 /**6 * Common type conversion method tool class7  */8  Public classConvertutil {9     Ten    /** One * The byte array is converted to a hexadecimal string. A     *  @paramsrc -     *  @returnhexadecimal string -     */    the     Public StaticString bytestohexstring (byte[] src) { -StringBuilder StringBuilder =NewStringBuilder (""); -        if(src = =NULL|| Src.length <= 0) { -            return NULL; +        } -         for(inti = 0; i < src.length; i++) { +            intv = src[i] & 0xFF; AString HV =integer.tohexstring (v); at            if(Hv.length () < 2) { -Stringbuilder.append (0); -            } - stringbuilder.append (HV); -        } -        returnstringbuilder.tostring (); in    } -     to    /** + * hexadecimal string converted to byte array -     *  @paramhexstring hexadecimal string the     *  @return  *     */ $     Public Static byte[] hexstringtobytes (String hexstring) {Panax Notoginseng        if(HexString = =NULL|| Hexstring.equals ("")) { -            return NULL; the        } +HexString =hexstring.touppercase (); A        intLength = Hexstring.length ()/2; the        Char[] Hexchars =Hexstring.tochararray (); +        byte[] D =New byte[length]; -         for(inti = 0; i < length; i++) { $            intpos = i * 2; $D[i] = (byte) (Chartobyte (Hexchars[pos]) << 4 | chartobyte (Hexchars[pos + 1])); -        } -        returnD; the    } -    Wuyi    /** the * Characters converted to bytes -     * @paramC character Wu     * @return -     */ About    Private Static byteChartobyte (Charc) { $        return(byte) "0123456789ABCDEF". IndexOf (c); -    } -     -    /** A * blob type converted to byte array +     * @paramblob the     * @return -     */ $      Public Static byte[] blobtobytes (blob blob) { theBufferedinputstream is =NULL; the         Try { theis =NewBufferedinputstream (Blob.getbinarystream ()); the             byte[] bytes =New byte[(int) Blob.length ()]; -             intLen =bytes.length; in             intOffset = 0; the             intRead = 0; the      About              while(Offset < len && (read = is.read (bytes, offset, len-offset)) >= 0) { theOffset + =Read; the             } the             returnbytes; +}Catch(Exception e) { -             return NULL; the}finally {Bayi             Try { the is.close (); theis =NULL; -}Catch(IOException e) { -                 return NULL; the             } the         } the     } the      -     /** the * Arabic numerals to Chinese lowercase the      * @paramsi Arabic numerals the      * @returnChinese lowercase string94      */ the      Public Staticstring Transition (string si) { theString []aa={"", "ten", "Hundred", "thousand", "Million", "100,000", "Million", "tens", "billion", "1 billion"};  theString []bb={"One", "two", "three", "four", "five", "six", "seven", "eight", "nine"}; 98         Char[] Ch=Si.tochararray ();  About         intmaxindex=ch.length; -         //Conversion of characters101String result = "";102         //Special conversions for two-bit numbers103         if(maxindex==2){   104              for(intI=maxindex-1,j=0;i>=0;i--, J + +){     the                 if(ch[j]!=48){     106                     if(j==0&&ch[j]==49){      107Result + =Aa[i]; 108}Else{      109Result + = bb[ch[j]-49]+Aa[i];  the                     }    111                 }    the             }113         //special conversions for other digits, using the largest number of digits of type int of 1 billion the}Else{    the              for(intI=maxindex-1,j=0;i>=0;i--, J + +){     the                 if(ch[j]!=48){     117Result + = bb[ch[j]-49]+Aa[i]; 118                 }   119             }   -         }121         122         returnresult;123     } 124}

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Common type conversion Method tool class