【Java】MD5编码加密-code片段

package cn.szy.zths.basic; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class MD5 { /** * MD5加密 * * @param plainText 加密文本 * @return 返回加密后的文本 */ public String Md5(String plainText) { String password = null; 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)); } password = buf.toString(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } return password; } }