璇ョ被鐨?code>getInstance(String algorithm) 鏂規(guī)硶榪斿洖涓涓狹essageDigest鐨勫疄浣擄紝鍔犲瘑鐨勪竴緋葷粺鐨?code>digest()鏂規(guī)硶鍜?code>update(byte input)鏂規(guī)硶銆傚姞瀵嗗悗榪斿洖涓涓猙yte[]錛?6浣嶏紝鎴戜滑緇忓父瑙佸埌寰堝寮婧愮綉绔欑殑涓嬭澆鍦板潃浼?xì)鏈変竴涓猍md5]鐨勯摼鎺ワ紝鎵撳紑鍏跺疄灝辨槸涓灝忔鏂囨湰鍐呭銆備緥濡傦細(xì)
MD5 (commons-logging-1.1.1-bin.zip) = f88520ed791673aed6cc4591bc058b55
榪欐槸Jakarta鐨刲ogging緇勪歡涓嬭澆鏃舵彁渚涚殑MD5鎽樿淇℃伅錛屾槸瀵硅繖涓獄ip鍖呰繘琛屽叏鏂囧姞瀵嗙敓鎴愮殑鎽樿錛屾憳瑕佺爜灝辨槸鍚庨潰鐨刦88520ed791673aed6cc4591bc058b55錛屽鏋滀綘涓嬭澆浠ュ悗錛屾寜鐓D5鐨勭畻娉曠敓鎴愯嚜宸辯殑鎽樿錛屽鏋滆繖浜屼釜鎽樿涓鏍鳳紝灝辮瘉鏄庤繖涓枃浠舵槸娌℃湁琚漢綃℃敼榪囩殑銆?br /> 閬囧埌鐨勯棶棰樻槸Java鐨凪essageDigest綾繪墽琛屽悗榪斿洖鐨刡yte[16]寰楄漿鎹㈡垚鍗佸叚榪涘埗鐨勫瓧絎︿覆錛屽鏋滅洿鎺ョ敤new String(byte[])錛屽緱鍒扮殑緇撴灉灝嗘槸涓嶆紜殑銆傜畻娉曟湁寰堝緗戝弸鎻愪緵浜嗭紝鐓ф惉浜嗐傛瘮杈冩湁瓚ｇ殑鏄紝commons-logging鎻愪緵鐨勯偅涓狹D5灞呯劧鍜屾垜鑷繁鐢熸垚鐨勪笉涓鏍?闅鵑亾鏂囦歡琚慨鏀硅繃錛?錛屽悗鏉ュ皾璇曚簡鍏跺畠鍦版柟鎻愪緵鐨凪D5鐮侊紝閮芥病鏈夐棶棰樸?br /> 鏈夊緢澶氱浉鍏崇殑鐜版垚浠ｇ爜錛屾悳闆嗕簡涓涓嬫暣鐞嗗涓嬶紙緇忚繃楠岃瘉錛夛細(xì)
public class MD5Builder {
static Logger logger = Logger.getLogger(MD5Builder.class); // 鐢ㄦ潵灝嗗瓧鑺傝漿鎹㈡垚 16 榪涘埗琛ㄧず鐨勫瓧絎?/span>
static char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8',
'9', 'a', 'b', 'c', 'd', 'e', 'f' }; /** * 瀵規(guī)枃浠跺叏鏂囩敓鎴怣D5鎽樿 * @param file 瑕佸姞瀵嗙殑鏂囦歡 * @return MD5鎽樿鐮?br />
*/ public static String getMD5(File file) { FileInputStream fis = null; try { MessageDigest md = MessageDigest.getInstance("MD5"); logger.info("MD5鎽樿闀垮害錛?/span>" + md.getDigestLength()); fis = new FileInputStream(file); byte[] buffer = new byte[2048]; int length = -1; logger.info("寮濮嬬敓鎴愭憳瑕?/span>"); long s = System.currentTimeMillis(); while ((length = fis.read(buffer)) != -1) { md.update(buffer, 0, length); } logger.info("鎽樿鐢熸垚鎴愬姛,鎬葷敤鏃? " + (System.currentTimeMillis() - s) + "ms"); byte[] b = md.digest(); return byteToHexString(b); // 16浣嶅姞瀵?br />
// return buf.toString().substring(8, 24); } catch (Exception ex) { logger.error(ex); ex.printStackTrace(); return null; }finally { try { fis.close(); } catch (IOException ex) { ex.printStackTrace(); } } } /** * 瀵逛竴孌礢tring鐢熸垚MD5鍔犲瘑淇℃伅 * @param message 瑕佸姞瀵嗙殑String * @return 鐢熸垚鐨凪D5淇℃伅 */ public static String getMD5(String message){ try { MessageDigest md = MessageDigest.getInstance("MD5"); logger.info("MD5鎽樿闀垮害錛?/span>" + md.getDigestLength()); byte[] b = md.digest(message.getBytes()); return byteToHexString(b); } catch (NoSuchAlgorithmException e) { logger.error(e); e.printStackTrace(); return null; } } /** * 鎶奲yte[]鏁扮粍杞崲鎴愬崄鍏繘鍒跺瓧絎︿覆琛ㄧず褰㈠紡 * @param tmp 瑕佽漿鎹㈢殑byte[] * @return 鍗佸叚榪涘埗瀛楃涓茶〃紺哄艦寮?br />
*/ private static String byteToHexString(byte[] tmp) { String s; // 鐢ㄥ瓧鑺傝〃紺哄氨鏄?nbsp;16 涓瓧鑺?/span> char str[] = new char[16 * 2]; // 姣忎釜瀛楄妭鐢?nbsp;16 榪涘埗琛ㄧず鐨勮瘽錛屼嬌鐢ㄤ袱涓瓧絎︼紝 // 鎵浠ヨ〃紺烘垚 16 榪涘埗闇瑕?nbsp;32 涓瓧絎?/span> int k = 0; // 琛ㄧず杞崲緇撴灉涓搴旂殑瀛楃浣嶇疆 for (int i = 0; i < 16; i++) { // 浠庣涓涓瓧鑺傚紑濮嬶紝瀵?nbsp;MD5 鐨勬瘡涓涓瓧鑺?br />
// 杞崲鎴?nbsp;16 榪涘埗瀛楃鐨勮漿鎹?/span> byte byte0 = tmp[i]; // 鍙栫 i 涓瓧鑺?/span> str[k++] = hexDigits[byte0 >>> 4 & 0xf]; // 鍙栧瓧鑺備腑楂?nbsp;4 浣嶇殑鏁板瓧杞崲, // >>> 涓洪昏緫鍙崇Щ錛屽皢絎﹀彿浣嶄竴璧峰彸縐?/span> str[k++] = hexDigits[byte0 & 0xf]; // 鍙栧瓧鑺備腑浣?nbsp;4 浣嶇殑鏁板瓧杞崲 } s = new String(str); // 鎹㈠悗鐨勭粨鏋滆漿鎹負(fù)瀛楃涓?/span> return s; }
}
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