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somta common

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package net.somta.common.utils.encrypt;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Md5Util {

    /**
	 * MD5加密
	 * @param str 相应参数拼装之后的字符串
	 * @return    加密字符串
	 */
	public static String encode(String str) {
        MessageDigest messageDigest = null;
        try {
            messageDigest = MessageDigest.getInstance("MD5");
            messageDigest.reset();
            messageDigest.update(str.getBytes("UTF-8"));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        byte[] byteArray = messageDigest.digest();
        StringBuffer md5StrBuff = new StringBuffer();
        for (int i = 0; i < byteArray.length; i++) {
            if (Integer.toHexString(0xFF & byteArray[i]).length() == 1){
                md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
            }else{
                md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
            }
        }
        return md5StrBuff.toString();
    }
}