java md5 32位加密方法
import java.security.MessageDigest; public class MD52 { public static void main(String[] args) { String a = MD5_32BIT.md5("123456"); System.out.println(a); } public final static String md5(String plainText) { String md5Str = null; try { StringBuffer buf = new StringBuffer(); MessageDigest md = MessageDigest.getInstance("MD5"); md.update(plainText.getBytes()); byte b[] = md.digest(); int i; 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)); } md5Str = buf.toString(); } catch (Exception