<<< Java生成Md5
posted @ 2014-06-11 17:21 sevennight 阅读(229) 评论(0) 编辑 收藏 举报

package cn.sevennight.test;
 
import java.security.MessageDigest;
 
public class md5{
 
    public static String MD5(String text) {
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(text.getBytes());
            byte b[] = md.digest();
            int i;
            StringBuffer buf = new StringBuffer("");
            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));
            }
            return new String(buf.toString());
        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
    } 
        public static void main(String[] args) {
        String md5 =MD5("123456");
        System.out.println(md5);
    } 
}