public static String str; public static String convertMD5(String plainText) { String result = ""; try { MessageDigest md = MessageDigest.getInstance("MD5"); md.update(plainText.getBytes()); byte b[] = md.digest(); int i; StringBuffer buf = new StringBuffer(""); for (int offset = 0; offset < b.length; offset++) { i = b[offset]; if (i < 0) i += 256; if (i < 16) buf.append("0"); buf.append(Integer.toHexString(i)); } str = buf.toString(); result = buf.toString(); //System.out.println("result32: " + buf.toString());// 32位的加密 //System.out.println("result16: " + buf.toString().substring(8, 24));// 16位的加密 } catch (NoSuchAlgorithmException e) { // TODO Auto-generated catch block e.printStackTrace(); } return result; } public static String convertSHA1(String plainText) { String result = ""; try { MessageDigest md = MessageDigest.getInstance("SHA-1"); md.update(plainText.getBytes()); byte b[] = md.digest(); int i; StringBuffer buf = new StringBuffer(""); for (int offset = 0; offset < b.length; offset++) { i = b[offset]; if (i < 0) i += 256; if (i < 16) buf.append("0"); buf.append(Integer.toHexString(i)); } str = buf.toString(); result = buf.toString(); //System.out.println("result32: " + buf.toString());// 32位的加密 //System.out.println("result16: " + buf.toString().substring(8, 24));// 16位的加密 } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } return result; } public static void main(String agrs[]) { System.out.println(ToHash.convertMD5("http://www.juapk.com")); System.out.println(ToHash.convertSHA1("http://www.juapk.com")); }
MD5 . SHA1 加密
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转载自andto.iteye.com/blog/1714572
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