public class Pay {                 /**以下四項(xiàng)這些數(shù)值機(jī)密填入自己申請(qǐng)的就好**/  // 商戶PID  public static final String PARTNER = "";  // 商戶收款賬號(hào)  public static final String SELLER = "";  // 商戶私鑰，pkcs8格式  public static final String RSA_PRIVATE = "";  // 支付寶公鑰  public static final String RSA_PUBLIC = "";  private Activity context;  private String mgoods,mprice,micon;  private int mtype;  private String mOutTradeNo;  public Pay(Activity activity, String goods,String goodsmore,String price,String icon,int type, String outTradeNo) {    context = activity;    mprice = price;    pay(price);  }  private Handler mHandler = new Handler() {    public void handleMessage(Message msg) {      switch (msg.what) {        case SDK_PAY_FLAG: {          PayResult payResult = new PayResult((String) msg.obj);          /**           * 同步返回的結(jié)果必須放置到服務(wù)端進(jìn)行驗(yàn)證（驗(yàn)證的規(guī)則請(qǐng)看https://doc.open.alipay.com/doc2/           * detail.htm?spm=0.0.0.0.xdvAU6&treeId=59&articleId=103665&           * docType=1) 建議商戶依賴異步通知           */          String resultInfo = payResult.getResult();// 同步返回需要驗(yàn)證的信息          String resultStatus = payResult.getResultStatus();          // 判斷resultStatus 為“9000”則代表支付成功，具體狀態(tài)碼代表含義可參考接口文檔          if (TextUtils.equals(resultStatus, "9000")) {            Toast.makeText(context, "支付成功", Toast.LENGTH_SHORT).show();          } else {            // 判斷resultStatus 為非"9000"則代表可能支付失敗            // "8000"代表支付結(jié)果因?yàn)橹Ц肚涝蚧蛘呦到y(tǒng)原因還在等待支付結(jié)果確認(rèn)，最終交易是否成功以服務(wù)端異步通知為準(zhǔn)（小概率狀態(tài)）            if (TextUtils.equals(resultStatus, "8000")) {              Toast.makeText(context, "支付結(jié)果確認(rèn)中", Toast.LENGTH_SHORT).show();            } else {              // 其他值就可以判斷為支付失敗，包括用戶主動(dòng)取消支付，或者系統(tǒng)返回的錯(cuò)誤              Toast.makeText(context, "支付失敗", Toast.LENGTH_SHORT).show();            }          }          break;        }        default:          break;      }    };  };  /**   * call alipay sdk pay. 調(diào)用SDK支付   *   */  public void pay(String goods,String goodsmore,String price) {    if (TextUtils.isEmpty(PARTNER) || TextUtils.isEmpty(RSA_PRIVATE) || TextUtils.isEmpty(SELLER)) {      new AlertDialog.Builder(context).setTitle("警告").setMessage("需要配置PARTNER | RSA_PRIVATE| SELLER")          .setPositiveButton("確定", new DialogInterface.OnClickListener() {            public void onClick(DialogInterface dialoginterface, int i) {              ////              finish();            }          }).show();      return;    }    String orderInfo = getOrderInfo(goods, goodsmore, price);    String sign = sign(orderInfo);    try {      /**       * 僅需對(duì)sign 做URL編碼       */      sign = URLEncoder.encode(sign, "UTF-8");    } catch (UnsupportedEncodingException e) {      e.printStackTrace();    }    /**     * 完整的符合支付寶參數(shù)規(guī)范的訂單信息     */    final String payInfo = orderInfo + "&sign=/"" + sign + "/"&" + getSignType();    Log.i("lff", "orderInfo == " +orderInfo);    Log.i("lff", "sign == " +sign);    Runnable payRunnable = new Runnable() {      @Override      public void run() {        // 構(gòu)造PayTask 對(duì)象        PayTask alipay = new PayTask(context);        // 調(diào)用支付接口，獲取支付結(jié)果        String result = alipay.pay(payInfo, true);        Message msg = new Message();        msg.what = SDK_PAY_FLAG;        msg.obj = result;        mHandler.sendMessage(msg);      }    };    // 必須異步調(diào)用    Thread payThread = new Thread(payRunnable);    payThread.start();  }  /**   * get the sdk version. 獲取SDK版本號(hào)   *   */  public void getSDKVersion() {    PayTask payTask = new PayTask(context);    String version = payTask.getVersion();    Toast.makeText(context, version, Toast.LENGTH_SHORT).show();  }  /**   * create the order info. 創(chuàng)建訂單信息   *   */  private String getOrderInfo(String subject, String body, String price) {    // 簽約合作者身份ID    String orderInfo = "partner=" + "/"" + PARTNER + "/"";    // 簽約賣家支付寶賬號(hào)    orderInfo += "&seller_id=" + "/"" + SELLER + "/"";    // 商戶網(wǎng)站唯一訂單號(hào)    orderInfo += "&out_trade_no=" + "/"" + getOutTradeNo() + "/"";    // 商品名稱    orderInfo += "&subject=" + "/"" + subject + "/"";    // 商品詳情    orderInfo += "&body=" + "/"" + body + "/"";    // 商品金額    orderInfo += "&total_fee=" + "/"" + "0.01" + "/"";    // 服務(wù)器異步通知頁(yè)面路徑//    orderInfo += "¬ify_url=" + "/"" + "http://notify.msp.hk/notify.htm" + "/"";    orderInfo += "¬ify_url=" + "/"" + "http://112.74.129.252/new/zfbCallback" + "/"";    // 服務(wù)接口名稱， 固定值    orderInfo += "&service=/"mobile.securitypay.pay/"";    // 支付類型， 固定值    orderInfo += "&payment_type=/"1/"";    // 參數(shù)編碼， 固定值    orderInfo += "&_input_charset=/"utf-8/"";    // 設(shè)置未付款交易的超時(shí)時(shí)間    // 默認(rèn)30分鐘，一旦超時(shí)，該筆交易就會(huì)自動(dòng)被關(guān)閉。    // 取值范圍：1m～15d。    // m-分鐘，h-小時(shí)，d-天，1c-當(dāng)天（無(wú)論交易何時(shí)創(chuàng)建，都在0點(diǎn)關(guān)閉）。    // 該參數(shù)數(shù)值不接受小數(shù)點(diǎn)，如1.5h，可轉(zhuǎn)換為90m。    orderInfo += "&it_b_pay=/"30m/"";    // extern_token為經(jīng)過(guò)快登授權(quán)獲取到的alipay_open_id,帶上此參數(shù)用戶將使用授權(quán)的賬戶進(jìn)行支付    // orderInfo += "&extern_token=" + "/"" + extern_token + "/"";    // 支付寶處理完請(qǐng)求后，當(dāng)前頁(yè)面跳轉(zhuǎn)到商戶指定頁(yè)面的路徑，可空    orderInfo += "&return_url=/"m.alipay.com/"";    // 調(diào)用銀行卡支付，需配置此參數(shù)，參與簽名， 固定值 （需要簽約《無(wú)線銀行卡快捷支付》才能使用）    // orderInfo += "&paymethod=/"expressGateway/"";    return orderInfo;  }  /**   * get the out_trade_no for an order. 生成商戶訂單號(hào)，該值在商戶端應(yīng)保持唯一（可自定義格式規(guī)范）   *   */  private String getOutTradeNo() {//    SimpleDateFormat format = new SimpleDateFormat("MMddHHmmss", Locale.getDefault());//    Date date = new Date();//    String key = format.format(date);////    Random r = new Random();//    key = key + r.nextInt();//    key = key.substring(0, 15);//    return key;    return mOutTradeNo;  }  /**   * sign the order info. 對(duì)訂單信息進(jìn)行簽名   *   * @param content   *      待簽名訂單信息   */  private String sign(String content) {    return SignUtils.sign(content, RSA_PRIVATE);  }  /**   * get the sign type we use. 獲取簽名方式   *   */  private String getSignType() {    return "sign_type=/"RSA/"";  }}

package com.easyhomework.teacher.ui;public final class Base64 {  private static final int BASELENGTH = 128;  private static final int LOOKUPLENGTH = 64;  private static final int TWENTYFOURBITGROUP = 24;  private static final int EIGHTBIT = 8;  private static final int SIXTEENBIT = 16;  private static final int FOURBYTE = 4;  private static final int SIGN = -128;  private static char PAD = '=';  private static byte[] base64Alphabet = new byte[BASELENGTH];  private static char[] lookUpBase64Alphabet = new char[LOOKUPLENGTH];  static {    for (int i = 0; i < BASELENGTH; ++i) {      base64Alphabet[i] = -1;    }    for (int i = 'Z'; i >= 'A'; i--) {      base64Alphabet[i] = (byte) (i - 'A');    }    for (int i = 'z'; i >= 'a'; i--) {      base64Alphabet[i] = (byte) (i - 'a' + 26);    }    for (int i = '9'; i >= '0'; i--) {      base64Alphabet[i] = (byte) (i - '0' + 52);    }    base64Alphabet['+'] = 62;    base64Alphabet['/'] = 63;    for (int i = 0; i <= 25; i++) {      lookUpBase64Alphabet[i] = (char) ('A' + i);    }    for (int i = 26, j = 0; i <= 51; i++, j++) {      lookUpBase64Alphabet[i] = (char) ('a' + j);    }    for (int i = 52, j = 0; i <= 61; i++, j++) {      lookUpBase64Alphabet[i] = (char) ('0' + j);    }    lookUpBase64Alphabet[62] = (char) '+';    lookUpBase64Alphabet[63] = (char) '/';  }  private static boolean isWhiteSpace(char octect) {    return (octect == 0x20 || octect == 0xd || octect == 0xa || octect == 0x9);  }  private static boolean isPad(char octect) {    return (octect == PAD);  }  private static boolean isData(char octect) {    return (octect < BASELENGTH && base64Alphabet[octect] != -1);  }  /**   * Encodes hex octects into Base64   *    * @param binaryData   *      Array containing binaryData   * @return Encoded Base64 array   */  public static String encode(byte[] binaryData) {    if (binaryData == null) {      return null;    }    int lengthDataBits = binaryData.length * EIGHTBIT;    if (lengthDataBits == 0) {      return "";    }    int fewerThan24bits = lengthDataBits % TWENTYFOURBITGROUP;    int numberTriplets = lengthDataBits / TWENTYFOURBITGROUP;    int numberQuartet = fewerThan24bits != 0 ? numberTriplets + 1        : numberTriplets;    char encodedData[] = null;    encodedData = new char[numberQuartet * 4];    byte k = 0, l = 0, b1 = 0, b2 = 0, b3 = 0;    int encodedIndex = 0;    int dataIndex = 0;    for (int i = 0; i < numberTriplets; i++) {      b1 = binaryData[dataIndex++];      b2 = binaryData[dataIndex++];      b3 = binaryData[dataIndex++];      l = (byte) (b2 & 0x0f);      k = (byte) (b1 & 0x03);      byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)          : (byte) ((b1) >> 2 ^ 0xc0);      byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)          : (byte) ((b2) >> 4 ^ 0xf0);      byte val3 = ((b3 & SIGN) == 0) ? (byte) (b3 >> 6)          : (byte) ((b3) >> 6 ^ 0xfc);      encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];      encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];      encodedData[encodedIndex++] = lookUpBase64Alphabet[(l << 2) | val3];      encodedData[encodedIndex++] = lookUpBase64Alphabet[b3 & 0x3f];    }    // form integral number of 6-bit groups    if (fewerThan24bits == EIGHTBIT) {      b1 = binaryData[dataIndex];      k = (byte) (b1 & 0x03);      byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)          : (byte) ((b1) >> 2 ^ 0xc0);      encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];      encodedData[encodedIndex++] = lookUpBase64Alphabet[k << 4];      encodedData[encodedIndex++] = PAD;      encodedData[encodedIndex++] = PAD;    } else if (fewerThan24bits == SIXTEENBIT) {      b1 = binaryData[dataIndex];      b2 = binaryData[dataIndex + 1];      l = (byte) (b2 & 0x0f);      k = (byte) (b1 & 0x03);      byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2)          : (byte) ((b1) >> 2 ^ 0xc0);      byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4)          : (byte) ((b2) >> 4 ^ 0xf0);      encodedData[encodedIndex++] = lookUpBase64Alphabet[val1];      encodedData[encodedIndex++] = lookUpBase64Alphabet[val2 | (k << 4)];      encodedData[encodedIndex++] = lookUpBase64Alphabet[l << 2];      encodedData[encodedIndex++] = PAD;    }    return new String(encodedData);  }  /**   * Decodes Base64 data into octects   *    * @param encoded   *      string containing Base64 data   * @return Array containind decoded data.   */  public static byte[] decode(String encoded) {    if (encoded == null) {      return null;    }    char[] base64Data = encoded.toCharArray();    // remove white spaces    int len = removeWhiteSpace(base64Data);    if (len % FOURBYTE != 0) {      return null;// should be divisible by four    }    int numberQuadruple = (len / FOURBYTE);    if (numberQuadruple == 0) {      return new byte[0];    }    byte decodedData[] = null;    byte b1 = 0, b2 = 0, b3 = 0, b4 = 0;    char d1 = 0, d2 = 0, d3 = 0, d4 = 0;    int i = 0;    int encodedIndex = 0;    int dataIndex = 0;    decodedData = new byte[(numberQuadruple) * 3];    for (; i < numberQuadruple - 1; i++) {      if (!isData((d1 = base64Data[dataIndex++]))          || !isData((d2 = base64Data[dataIndex++]))          || !isData((d3 = base64Data[dataIndex++]))          || !isData((d4 = base64Data[dataIndex++]))) {        return null;      }// if found "no data" just return null      b1 = base64Alphabet[d1];      b2 = base64Alphabet[d2];      b3 = base64Alphabet[d3];      b4 = base64Alphabet[d4];      decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);      decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));      decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);    }    if (!isData((d1 = base64Data[dataIndex++]))        || !isData((d2 = base64Data[dataIndex++]))) {      return null;// if found "no data" just return null    }    b1 = base64Alphabet[d1];    b2 = base64Alphabet[d2];    d3 = base64Data[dataIndex++];    d4 = base64Data[dataIndex++];    if (!isData((d3)) || !isData((d4))) {// Check if they are PAD characters      if (isPad(d3) && isPad(d4)) {        if ((b2 & 0xf) != 0)// last 4 bits should be zero        {          return null;        }        byte[] tmp = new byte[i * 3 + 1];        System.arraycopy(decodedData, 0, tmp, 0, i * 3);        tmp[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);        return tmp;      } else if (!isPad(d3) && isPad(d4)) {        b3 = base64Alphabet[d3];        if ((b3 & 0x3) != 0)// last 2 bits should be zero        {          return null;        }        byte[] tmp = new byte[i * 3 + 2];        System.arraycopy(decodedData, 0, tmp, 0, i * 3);        tmp[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);        tmp[encodedIndex] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));        return tmp;      } else {        return null;      }    } else { // No PAD e.g 3cQl      b3 = base64Alphabet[d3];      b4 = base64Alphabet[d4];      decodedData[encodedIndex++] = (byte) (b1 << 2 | b2 >> 4);      decodedData[encodedIndex++] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));      decodedData[encodedIndex++] = (byte) (b3 << 6 | b4);    }    return decodedData;  }  /**   * remove WhiteSpace from MIME containing encoded Base64 data.   *    * @param data   *      the byte array of base64 data (with WS)   * @return the new length   */  private static int removeWhiteSpace(char[] data) {    if (data == null) {      return 0;    }    // count characters that's not whitespace    int newSize = 0;    int len = data.length;    for (int i = 0; i < len; i++) {      if (!isWhiteSpace(data[i])) {        data[newSize++] = data[i];      }    }    return newSize;  }}