Java中二进制和字符串之间的相互转换

本文是小弟从网上转载而来，具体出自哪里不甚清楚，很感谢分享该文章的博主

 

public class test { public static String byte2hex(byte[] b) { // 二进制转字符串 String hs = ""; String stmp = ""; for (int n = 0; n < b.length; n++) { stmp = (java.lang.Integer.toHexString(b[n] & 0XFF)); if (stmp.length() == 1) hs = hs + "0" + stmp; else hs = hs + stmp; } return hs; } public static byte[] hex2byte(String str) { // 字符串转二进制 if (str == null) return null; str = str.trim(); int len = str.length(); if (len == 0 || len % 2 == 1) return null; byte[] b = new byte[len / 2]; try { for (int i = 0; i < str.length(); i += 2) { b[i / 2] = (byte) Integer .decode("0x" + str.substring(i, i + 2)).intValue(); } return b; } catch (Exception e) { return null; } } public static void main(String[] args) { String str = "abfdsfsdffdssfsd"; String result = ""; result = byte2hex(str.getBytes()); System.out.println(str.getBytes()); System.out.println(result); System.out.println(new String(hex2byte(result))); System.out.println(hex2byte(result).toString()); } }