java 16进制编码字符串与字符串转换方法总结

import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
/**
 * 16进制编码数字工具类
*
Title: HexUtils
*
Description: 
*@author yuhy
*@date 2019年6月26日
 */
public class HexUtils {

	/**
	 * 16进制数字字符集
	 */
	 private static String hexString="0123456789ABCDEF";
	 
	 /**
	  * 转化字符串为十六进制编码
	  */
	 public static String toHexString(String s){  
	  String str="";  
	  for (int i=0;i>4));
	   sb.append(hexString.charAt((bytes[i]&0x0f)>>0));
	  }
	  return sb.toString();
	 }
	 /**
	  * 将16进制数字解码成字符串,适用于所有字符（包括中文）
	  */
	 public static String decode(String bytes)
	 {
	  ByteArrayOutputStream baos=new ByteArrayOutputStream(bytes.length()/2);
	  //将每2位16进制整数组装成一个字节
	  for(int i=0;iTitle: ToHexString

	 *
Description: 
	 *@param str
	 *@return
	 */
	public static String ToHexString(String str) {
		String str1 = "";
		try {
				byte[] b = str.getBytes("gbk");
				int i = 0;
				int max = b.length;
				for (; i < max; i++) {
					str1 = str1 + Integer.toHexString(b[i] & 0xFF);
				}
			} catch (UnsupportedEncodingException e) {
				System.out.println("异常信息ToHexString" + e.getMessage());
			}
			return str1;
		}
	/**
	 * 16进制编码字符串转字节数组
	 *
Title: toByteArray
	 *
Description: 
	 *@param hexString
	 *@return
	 */
	public static byte[] toByteArray(String hexString) {
        hexString = hexString.toLowerCase();
	    final byte[] byteArray = new byte[hexString.length() / 2];
	    int k = 0;
	    for (int i = 0; i < byteArray.length; i++) {// 因为是16进制，最多只会占用4位，转换成字节需要两个16进制的字符，高位在先
		    byte high = (byte) (Character.digit(hexString.charAt(k), 16) & 0xff);
		    byte low = (byte) (Character.digit(hexString.charAt(k + 1), 16) & 0xff);
		    byteArray[i] = (byte) (high << 4 | low);
		    k += 2;
		}
		return byteArray;
	}
	/**
	 * 字节数组转16进制编码字符串
	 *
Title: toHexString
	 *
Description: 
	 *@param byteArray
	 *@return
	 */
	public static String toHexString(byte[] byteArray) {
	    String str = null;
	    if (byteArray != null && byteArray.length > 0) {
	        StringBuffer stringBuffer = new StringBuffer(byteArray.length);
	        for (byte byteChar : byteArray) {
	            stringBuffer.append(String.format("%02X", byteChar));
	        }
	        str = stringBuffer.toString();
	    }
	    return str;
	 }
	 
	/**
	 * 字节数组转字符串
	 *
Title: ByteArrayDecode
	 *
Description: 
	 *@param bytes
	 *@return
	 */
	 public static String ByteArray2String(byte[] bytes) {
		 String hexStr = toHexString(bytes);
		 return decode(hexStr);
	 }
	 
	 public static void main(String[] args) {
		  String str = "你好asbc121f,smf,m,ewflwf健康的";
		  String sljzstr = encode(str);
		  System.out.println("字符串转16进制数字____"+sljzstr);
		  System.out.println("16进制数字转成字符串____"+decode(sljzstr));
		  System.out.println("字节数组转字符串:"+ByteArray2String(str.getBytes()));
		  int a = 1<<4|2;
		  System.out.println("a="+a);
	 }
}