MD5加密

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

/**
 * MD5加密
 */
public class MD5Util {
    public static String getMD5Str(String str) {
        byte[] digest = null;
        try {
            MessageDigest md5 = MessageDigest.getInstance("md5");
            digest = md5.digest(str.getBytes("utf-8"));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        //16是表示转换为16进制数
        String md5Str = new BigInteger(1, digest).toString(16);
        return md5Str;
    }
}