代碼如下所示：
/*輸入一個byte和byte[]合併為byte[]*/ public byte[] byteMerger(byte byte_1, byte[] byte_2) { byte[] byte_3 = new byte[1 + byte_2.length]; byte_3[0] = byte_1; System.arraycopy(byte_2, 0, byte_3, 1, byte_2.length); return byte_3; } /*輸入一個byte[]和byte[]合併為byte[]*/ public byte[] byteMerger(byte[] byte_1, byte[] byte_2) { byte[] byte_3 = new byte[1 + byte_2.length]; byte_3[0] = byte_1; System.arraycopy(byte_2, 0, byte_3, byte_1.length, byte_2.length); return byte_3; } /*輸入一個string（16進制的字符hex eg：ff）輸出為16進制的byte[]，注意輸入為小寫的hex字符串*/ public byte[] hexStringToByte(String hex) { int len = (hex.length() / 2); byte[] result = new byte[len]; char[] achar = hex.toCharArray(); for (int i = 0; i < len; i++) { int pos = i * 2; result[i] = (byte) (charToByte(achar[pos]) << 4 | charToByte(achar[pos + 1])); } //System.out.println(Arrays.toString(result)); return result; } private byte charToByte(char c) { //return (byte) "0123456789ABCDEF".indexOf(c); return (byte) "0123456789abcdef".indexOf(c); } /*輸入10進制數字字符串，輸出hex字符串（2位,eg: f 則輸出0f）*/ String value= "100"; int parseInt = Integer.parseInt(value, 10); String hexString = Integer.toHexString(parseInt); if (hexString.length() < 2) { hexString = '0' + hexString; } header = header + hexString; } /*輸入16進制byte[]輸出16進製字符串*/ public static String byteArrayToHexStr(byte[] byteArray) { if (byteArray == null) { return null; } char[] hexArray = "0123456789ABCDEF".toCharArray(); char[] hexChars = new char[byteArray.length * 2]; for (int j = 0; j < byteArray.length; j++) { int v = byteArray[j] & 0xFF; hexChars[j * 2] = hexArray[v >>> 4]; hexChars[j * 2 + 1] = hexArray[v & 0x0F]; } return new String(hexChars); }PS：下面看下js對url中特殊字符的轉換
let str = "http%3A%2F%2Fxxxxxxxx%2Findex.php%2Fxxxxxxx%2FMember%2Fregister%3Frecommend_id%3D11442%26id%3D87"; function replaceStr(str){ str = str.replace(/%3A/g, ":"); str = str.replace(/%2F/g, "/"); str = str.replace(/%3F/g, "?"); str = str.replace(/%3D/g, "="); str = str.replace(/%26/g, "&"); str = str.replace(/%2B/g, "+"); str = str.replace(/%20/g, " "); str = str.replace(/%23/g, "#"); return str; } console.log(replaceStr(str));總結
以上所述是小編給大家介紹的Java中byte[]、String、Hex字符串等轉換的方法，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對武林網網站的支持！