Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 *  Copyright (C) 2015 GuDong <gudong.name@gmail.com>
 *
 *  This file is part of GdTranslate
 *
 *  GdTranslate is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  GdTranslate is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with GdTranslate.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

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

public class Main {
    public static String getSign(String appid, String q, String salt, String key) {
        try {
            q = new String(q.getBytes(), "UTF-8");
            return stringToMD5(new StringBuilder(appid).append(q).append(salt).append(key).toString());
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return null;
        }
    }

    public static String stringToMD5(String str) {

        try {
            byte[] strTemp = str.getBytes();
            MessageDigest mdTemp = MessageDigest.getInstance("MD5");
            mdTemp.update(strTemp);
            return toHexString(mdTemp.digest());
        } catch (Exception e) {
            return null;
        }
    }

    public static String toHexString(byte[] md) {
        char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
        int j = md.length;
        char str[] = new char[j * 2];
        for (int i = 0; i < j; i++) {
            byte byte0 = md[i];
            str[2 * i] = hexDigits[byte0 >>> 4 & 0xf];
            str[i * 2 + 1] = hexDigits[byte0 & 0xf];
        }
        return new String(str);
    }
}