字符串与16进制字符串相互转化

一、ASCII字符串转换为16进制字符串

/** * @param s 字符串 * @return 16进制字符串 * @desc 字符串转换为16进制字符串 */ public static String toHexString(String s) { String str = ""; for (int i = 0; i < s.length(); i++) { int ch = (int) s.charAt(i); String s4 = Integer.toHexString(ch); str = str + s4; } return "0x" + str;//0x表示十六进制 } 二、十六进制编码 转换为ASCII字符串

/** * @param s * @return 字符串 * @desc 转换十六进制编码为字符串 */ public static String toStringHex(String s) { if ("0x".equals(s.substring(0, 2))) { s = s.substring(2); } byte[] baKeyword = new byte[s.length() / 2]; for (int i = 0; i < baKeyword.length; i++) { try { baKeyword[i] = (byte) (0xff & Integer.parseInt(s.substring( i * 2, i * 2 + 2), 16)); } catch (Exception e) { e.printStackTrace(); } } try { s = new String(baKeyword, "utf-8");//UTF-16le:Not } catch (Exception e1) { e1.printStackTrace(); } return s; }