Java字节数组转按radix进制输出

代码如下：

 public class Main_bytesToStr {

     public static void main(String[] args) throws IOException {
         // TODO Auto-generated method stub
         System.out.println("defaultCharset: " + Charset.defaultCharset().name());
         System.out.println("file.encoding:" + System.getProperty("file.encoding"));
         System.out.println();

         String word = "a好";// 字符或字符串在Java内存中始终以内部编码即UTF-16保存。且采用大端
         printTransStr(word, "ISO-8859-1");
         printTransStr(word, "GBK");
         printTransStr(word, "Unicode");
         printTransStr(word, "UTF-16");
         printTransStr(word, "UTF-16BE");
         printTransStr(word, "UTF-16LE");
         System.out.println();

         InputStreamReader ir = new InputStreamReader(System.in);

     }

     public static void printTransStr(String word, String charset) throws UnsupportedEncodingException {
         System.out.println("--------" + word + "  " + charset + "--------");
         byte[] bytes = word.getBytes(charset);
         System.out.println(binaryToStr(bytes, 2));
         System.out.println(binaryToStr(bytes, 8));
         System.out.println(binaryToStr(bytes, 10));
         System.out.println(binaryToStr(bytes, 16));
     }

     /**
      * 将byte[]转为各种进制的字符串
      *
      * @param bytes
      *            byte[]
      * @param radix
      *            基数可以转换进制的范围，从Character.MIN_RADIX到Character.MAX_RADIX，超出范围后变为10进制
      * @return 转换后的字符串
      */
     public static String binaryToStr(byte[] bytes, int radix) {
         return new BigInteger(1, bytes).toString(radix);// 这里的1代表正数
         // System.out.printf("%x ",bytes[0]);
     }
 }

结果如下：

 defaultCharset: GBK
 file.encoding:GBK

 --------a好  ISO-8859-1--------
 110000100111111
 60477
 24895
 613f
 --------a好  GBK--------
 11000011011101011000011
 30335303
 6404803
 61bac3
 --------a好  Unicode--------
 111111101111111100000000011000010101100101111101
 7757740030254575
 280371176495485
 feff0061597d
 --------a好  UTF-16--------
 111111101111111100000000011000010101100101111101
 7757740030254575
 280371176495485
 feff0061597d
 --------a好  UTF-16BE--------
 11000010101100101111101
 30254575
 6379901
 61597d
 --------a好  UTF-16LE--------
 1100001000000000111110101011001
 14100076531
 1627422041
 61007d59

从Unicode或UTF-16的结果也可以看出，JVM采用大端方式存多字节的数据。