java MD5 jar包

MD5jar包 源码如下 public class MD5 { public static String getMD5( String content ) { try { MessageDigest digest = MessageDigest.getInstance( "MD5" ); digest.update( content.getBytes() ); return getHashString( digest ); } catch ( NoSuchAlgorithmException e ) { e.printStackTrace(); } return null; } private static String getHashString( MessageDigest digest ) { StringBuilder builder = new StringBuilder(); for ( byte b : digest.digest() ) { builder.append( Integer.toHexString( (b >> 4) & 0xf ) ); builder.append( Integer.toHexString( b & 0xf ) ); } return builder.toString(); } }