public static String bytesToHexString(byte[] bytes) { StringBuffer stringBuffer = new StringBuffer(); String temp = null; for (int i = 0; i < bytes.length; i++) { temp = Integer.toHexString(bytes[i] & 0xFF); if (temp.length() == 1) { stringBuffer.append("0"); } stringBuffer.append(temp); } return stringBuffer.toString().toUpperCase(); }
参考链接:
另外一种方式(效率非常非常低,仅为了展示格式化输出,不推荐使用)
public static String bytesToHexString(byte[] bytes) { StringBuffer stringBuffer = new StringBuffer(); for (int i = 0; i < bytes.length; i++) { stringBuffer.append(String.format("%02x", bytes[i])); } return stringBuffer.toString(); }