import java.io.Serializable; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; /** * Created by fengmai on 2017/5/4. */ public class MD5Utils implements Serializable { public static String encryption(String plainText) { String re_md5 = new String(); 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)); } re_md5 = buf.toString(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } return re_md5; } }
用MessageDigest提取String信息摘要也就是MD5值
最新推荐文章于 2021-03-10 09:04:45 发布