为了方便大家使用，我准备了一个不需要单独引包的MD5大写的32位加密代码，希望能为大家带来一定的价值：
package test; import java.io.UnsupportedEncodingException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class common { public static void main(String[] args) { //输出结果:96E79218965EB72C92A549DD5A330112 System.out.println(encrypt("111111")); } /** * 32位大写加密 * @param password * @return */ private static String encrypt(String password) { String passwordMd5 = null; try { MessageDigest md5 = MessageDigest.getInstance("MD5"); byte[] bytes = md5.digest(password.getBytes("utf-8")); passwordMd5 = toHex(bytes); } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) { e.printStackTrace(); } return passwordMd5; } private static String toHex(byte[] bytes) { final char[] HEX_DIGITS = "0123456789ABCDEF".toCharArray(); StringBuilder ret = new StringBuilder(bytes.length * 2); for (int i = 0; i < bytes.length; i++) { ret.append(HEX_DIGITS[(bytes[i] >> 4) & 0x0f]); ret.append(HEX_DIGITS[bytes[i] & 0x0f]); } return ret.toString(); } }
小写的，自己看改哪里，自己改就行：
package test; import java.io.UnsupportedEncodingException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class common { public static void main(String[] args) { //输出结果:96e79218965eb72c92a549dd5a330112 System.out.println(encrypt("111111")); } /** * 32位大写加密 * @param password * @return */ private static String encrypt(String password) { String passwordMd5 = null; try { MessageDigest md5 = MessageDigest.getInstance("MD5"); byte[] bytes = md5.digest(password.getBytes("utf-8")); passwordMd5 = toHex(bytes); } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) { e.printStackTrace(); } return passwordMd5; } private static String toHex(byte[] bytes) { //大小写，自己改这里就行了。 final char[] HEX_DIGITS = "0123456789abcde".toCharArray(); StringBuilder ret = new StringBuilder(bytes.length * 2); for (int i = 0; i < bytes.length; i++) { ret.append(HEX_DIGITS[(bytes[i] >> 4) & 0x0f]); ret.append(HEX_DIGITS[bytes[i] & 0x0f]); } return ret.toString(); } }
