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import
import
import
public MD5Utils { /** * 使用md5的算法进行加密 */ public static String md5(String plainText) { byte [] secretBytes = null ; try { secretBytes = MessageDigest.getInstance( "md5" ).digest( plainText.getBytes()); } catch (NoSuchAlgorithmException e) { throw new RuntimeException( "没有md5这个算法!" ); } String md5code = new BigInteger( 1 , secretBytes).toString( 16 ); // // 如果生成数字未满32位,需要前面补0 for ( int
0 ; i < 32 - md5code.length(); i++) { md5code = "0" + md5code; } return md5code; } public static void
System.out.println(md5( "123" )); } } |