使用javaAPI生成MD5摘要

来源：互联网发布：保险大数据编辑：程序博客网时间：2024/06/03 20:11

方法很简单，直接贴junit测试代码：

@Test    public void test() throws NoSuchAlgorithmException {        String str = "123456";        byte[] buf = str.getBytes();        MessageDigest md5 = MessageDigest.getInstance("MD5");        md5.update(buf);        byte[] tmp = md5.digest();        StringBuilder sb = new StringBuilder();        for (byte b : tmp) {            if (b > 0 && b < 16)                sb.append("0");            sb.append(Integer.toHexString(b & 0xff));        }        System.out.println("md5 length:" + tmp.length + " result length:" + sb.toString().length());        System.out.println(sb);    }

结果如下：

e10adc3949ba59abbe56e057f20f883eProcess finished with exit code 0

linux命令，如下：

 echo -n 123456|md5sume10adc3949ba59abbe56e057f20f883e  -

echo命令的-n选项代表不换行
方法：

public String getMD5(String need2Encode) throws NoSuchAlgorithmException {        byte[] buf = need2Encode.getBytes();        MessageDigest md5 = MessageDigest.getInstance("MD5");        md5.update(buf);        byte[] tmp = md5.digest();        StringBuilder sb = new StringBuilder();        for (byte b : tmp) {            if (b > 0 && b < 16)                sb.append("0");            sb.append(Integer.toHexString(b & 0xff));        }        return sb.toString();    }

参考博客：Java生成md5、java 32位md5加密类

阅读全文

0 0