转载自。。。
①、将字符串加密称MD5,32位16进制字符串
②、将字符串加密称ASCII字串
③、将ASCII字串编程16进制字串
import java.security.MessageDigest; public class StringUtils { public static String replaceUrlWithPlus(String url) { if (url != null) { return url.replaceAll("http://(.)*?/", "").replaceAll("[.:/,%?&=]", "+").replaceAll("[+]+", "+"); } return null; } public static String EncodeMD5(String text) throws Exception { MessageDigest md = MessageDigest.getInstance("MD5"); md.update(text.getBytes("US-ASCII")); byte[] digest = md.digest(); StringBuffer md5 = new StringBuffer(); for (int i = 0; i < digest.length; i++) { md5.append(Character.forDigit((digest[i] & 0xF0) >> 4, 16)); md5.append(Character.forDigit((digest[i] & 0xF), 16)); } return md5.toString(); } public static String EncodeMD5ASCII(String text) throws Exception { MessageDigest md = MessageDigest.getInstance("MD5"); md.update(text.getBytes("US-ASCII")); byte[] digest = md.digest(); return new String(digest, "US-ASCII"); } public static String DecodeMD5Hex(String text) throws Exception { byte[] digest = text.getBytes(); StringBuffer md5 = new StringBuffer(); for (int i = 0; i < digest.length; i++) { md5.append(Character.forDigit((digest[i] & 0xF0) >> 4, 16)); md5.append(Character.forDigit((digest[i] & 0xF), 16)); } return md5.toString(); } }
时间: 2024-09-30 15:23:50