Cookies中的User_Agent获取

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User_Agent的获取方法

1.网络请求令牌

2.工具类实现Base64的加密解密

一、网络请求令牌

1、首先确定key（服务端返回）

private final static String DES = "DES";private final static String key = "saas1.0_app*#!DesKey";（saas为项目名称，1.0为版本号

2、网络令牌的获取方式

    public static String User_Agent2;    public static String getUser_Agent2() {        try {            User_Agent2 = DESUtil.encrypt("saas");            Log.e("User_Agent2","User_Agent2="+User_Agent2);        } catch (Exception e) {            e.printStackTrace();        }        return User_Agent2;    }

上面的DESUtil工具类将在下面介绍

二、工具类DESUtil

import android.util.Base64;import java.io.IOException;import java.security.SecureRandom;import javax.crypto.Cipher;import javax.crypto.SecretKey;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESKeySpec;public class DESUtil {        private final static String DES = "DES";        private final static String key = "saas1.0_app*#!DesKey";       public static void main(String[] args) throws Exception {        }        /**         * Description 根据键值进行加密         * @param data         * @return         * @throws Exception         */        public static String encrypt(String data) throws Exception {            byte[] bt = encrypt(data.getBytes("utf-8"));//          String strs = new BASE64Encoder().encode(bt);            String strs = Base64.encodeToString(bt, Base64.DEFAULT);//          Log.e("base64","strs="+strs);            return strs.replace("\n", "");        }        /**         * Description 根据键值进行解密         * @param data         * @return         * @throws Exception          * @throws IOException         * @throws Exception         */        public static String decrypt(String data) throws Exception{            byte[] buf = null;            byte[] bt = null;            if (data == null)                   return null;//          BASE64Decoder decoder = new BASE64Decoder();//          buf = decoder.decodeBuffer(data);            buf = Base64.decode(data, Base64.DEFAULT);            bt = decrypt(buf);//          String result =  new String(bt,"UTF-8");//          Log.e("base64","result="+result);            return new String(bt);          }        /**         * Description 根据键值进行加密         * @param data         * @return         * @throws Exception         */        private static byte[] encrypt(byte[] data) throws Exception {            // 生成一个可信任的随机数源            SecureRandom sr = new SecureRandom();            // 从原始密钥数据创建DESKeySpec对象            DESKeySpec dks = new DESKeySpec(key.getBytes());            // 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);            SecretKey securekey = keyFactory.generateSecret(dks);            // Cipher对象实际完成加密操作            Cipher cipher = Cipher.getInstance(DES);            // 用密钥初始化Cipher对象            cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);            return cipher.doFinal(data);        }        /**         * Description 根据键值进行解密         * @param data         * @return         * @throws Exception         */        private static byte[] decrypt(byte[] data) throws Exception {            // 生成一个可信任的随机数源            SecureRandom sr = new SecureRandom();            // 从原始密钥数据创建DESKeySpec对象            DESKeySpec dks = new DESKeySpec(key.getBytes());            // 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);            SecretKey securekey = keyFactory.generateSecret(dks);            // Cipher对象实际完成解密操作            Cipher cipher = Cipher.getInstance(DES);            // 用密钥初始化Cipher对象            cipher.init(Cipher.DECRYPT_MODE, securekey, sr);            return cipher.doFinal(data);        }        }

注：调用的一般在加入请求头中使用addHeader();

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