Android支付寶支付封裝代碼
在做Android支付的時候肯定會用到支付寶支付, 根據(jù)官方給出的demo做起來非常費勁,所以我們需要一次簡單的封裝。
封裝的代碼也很簡單,就是將官網(wǎng)給的demo提取出一個類來方便使用。
public class Alipay {
// 商戶PID
public static final String PARTNER = "123456789";
// 商戶收款賬號
public static final String SELLER = "qibin0506@gmail.com";
// 商戶私鑰,pkcs8格式
public static final String RSA_PRIVATE = "rsa_private";
// 支付寶公鑰
public static final String RSA_PUBLIC = "rsa_public";
private static final int SDK_PAY_FLAG = 1;
private WeakReference<Activity> mActivity;
private OnAlipayListener mListener;
public Alipay(Activity activity) {
mActivity = new WeakReference<Activity>(activity);
}
@SuppressLint("HandlerLeak")
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
if (msg.what == SDK_PAY_FLAG) {
PayResult payResult = new PayResult((String) msg.obj);
// 支付寶返回此次支付結(jié)果及加簽,建議對支付寶簽名信息拿簽約時支付寶提供的公鑰做驗簽
String resultInfo = payResult.getResult();
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")) {
if (mListener != null) mListener.onSuccess();
} else {
// 判斷resultStatus 為非“9000”則代表可能支付失敗
// “8000”代表支付結(jié)果因為支付渠道原因或者系統(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")) {
if (mListener != null) mListener.onWait();
} else {
// 其他值就可以判斷為支付失敗,包括用戶主動取消支付,或者系統(tǒng)返回的錯誤
if (mListener != null) mListener.onCancel();
}
}
}
}
};
/**
* 支付
*
* @param title 標(biāo)題 不能為空或者“”
* @param desc 描述 不能為空或者“”
* @param price 價格 不能為空或者“”
* @param sn 商品唯一貨號 不能為空或者“”
* @param url 服務(wù)器回調(diào)url 不能為空或者“”
*/
public void pay(String title, String desc, String price, String sn, String url) {
// 訂單
String orderInfo = getOrderInfo(title, desc, price, sn, url);
// 對訂單做RSA 簽名
String sign = sign(orderInfo);
try {
// 僅需對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();
Runnable payRunnable = new Runnable() {
@Override
public void run() {
Activity activity = mActivity.get();
if(activity == null) return;
// 構(gòu)造PayTask 對象
PayTask alipay = new PayTask(activity);
// 調(diào)用支付接口,獲取支付結(jié)果
String result = alipay.pay(payInfo);
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();
}
/**
* create the order info. 創(chuàng)建訂單信息
*
*/
public String getOrderInfo(String subject, String body, String price,
String sn, String url) {
// 簽約合作者身份ID
String orderInfo = "partner=" + "\"" + PARTNER + "\"";
// 簽約賣家支付寶賬號
orderInfo += "&seller_id=" + "\"" + SELLER + "\"";
// 商戶網(wǎng)站唯一訂單號
orderInfo += "&out_trade_no=" + "\"" + sn + "\"";
// 商品名稱
orderInfo += "&subject=" + "\"" + subject + "\"";
// 商品詳情
orderInfo += "&body=" + "\"" + body + "\"";
// 商品金額
orderInfo += "&total_fee=" + "\"" + price + "\"";
// 服務(wù)器異步通知頁面路徑
orderInfo += "¬ify_url=" + "\"" + url + "\"";
// 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時間
// 默認(rèn)30分鐘,一旦超時,該筆交易就會自動被關(guān)閉。
// 取值范圍:1m~15d。
// m-分鐘,h-小時,d-天,1c-當(dāng)天(無論交易何時創(chuàng)建,都在0點關(guān)閉)。
// 該參數(shù)數(shù)值不接受小數(shù)點,如1.5h,可轉(zhuǎn)換為90m。
orderInfo += "&it_b_pay=\"30m\"";
// extern_token為經(jīng)過快登授權(quán)獲取到的alipay_open_id,帶上此參數(shù)用戶將使用授權(quán)的賬戶進行支付
// orderInfo += "&extern_token=" + "\"" + extern_token + "\"";
// 支付寶處理完請求后,當(dāng)前頁面跳轉(zhuǎn)到商戶指定頁面的路徑,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《無線銀行卡快捷支付》才能使用)
// orderInfo += "&paymethod=\"expressGateway\"";
return orderInfo;
}
/**
* sign the order info. 對訂單信息進行簽名
*
* @param content
* 待簽名訂單信息
*/
public String sign(String content) {
return SignUtils.sign(content, RSA_PRIVATE);
}
/**
* get the sign type we use. 獲取簽名方式
*
*/
public String getSignType() {
return "sign_type=\"RSA\"";
}
public void setListener(OnAlipayListener l) {
mListener = l;
}
/**
* 支付回調(diào)接口
*
* @author lenovo
*
*/
public static class OnAlipayListener {
/**
* 支付成功
*/
public void onSuccess() {}
/**
* 支付取消
*/
public void onCancel() {}
/**
* 等待確認(rèn)
*/
public void onWait() {}
}
}
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;
}
}
class PayResult {
private String resultStatus;
private String result;
private String memo;
public PayResult(String rawResult) {
if (TextUtils.isEmpty(rawResult))
return;
String[] resultParams = rawResult.split(";");
for (String resultParam : resultParams) {
if (resultParam.startsWith("resultStatus")) {
resultStatus = gatValue(resultParam, "resultStatus");
}
if (resultParam.startsWith("result")) {
result = gatValue(resultParam, "result");
}
if (resultParam.startsWith("memo")) {
memo = gatValue(resultParam, "memo");
}
}
}
@Override
public String toString() {
return "resultStatus={" + resultStatus + "};memo={" + memo
+ "};result={" + result + "}";
}
private String gatValue(String content, String key) {
String prefix = key + "={";
return content.substring(content.indexOf(prefix) + prefix.length(),
content.lastIndexOf("}"));
}
/**
* @return the resultStatus
*/
public String getResultStatus() {
return resultStatus;
}
/**
* @return the memo
*/
public String getMemo() {
return memo;
}
/**
* @return the result
*/
public String getResult() {
return result;
}
}
class SignUtils {
private static final String ALGORITHM = "RSA";
private static final String SIGN_ALGORITHMS = "SHA1WithRSA";
private static final String DEFAULT_CHARSET = "UTF-8";
public static String sign(String content, String privateKey) {
try {
PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec(
Base64.decode(privateKey));
KeyFactory keyf = KeyFactory.getInstance(ALGORITHM);
PrivateKey priKey = keyf.generatePrivate(priPKCS8);
java.security.Signature signature = java.security.Signature
.getInstance(SIGN_ALGORITHMS);
signature.initSign(priKey);
signature.update(content.getBytes(DEFAULT_CHARSET));
byte[] signed = signature.sign();
return Base64.encode(signed);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
前面的幾個常量是需要去支付寶官網(wǎng)獲取的,獲取后直接替換就ok,
其他的代碼基本都是從demo中copy出來的, 現(xiàn)在我們就將支付功能封裝到了一個類中,那么如何使用呢?
Alipay alipay = new Alipay(OrderConfirmActivity.this);
alipay.setListener(mAlipayListener);
alipay.pay(desc, mOrder.getShopName(), String.valueOf(orderAmount), orderSn, url); /**
* 支付寶支付回調(diào)
*/ private Alipay.OnAlipayListener mAlipayListener = new Alipay.OnAlipayListener() { @Override public void onSuccess() {
onOrderSubmitSuccess();
} @Override public void onCancel() {
onUserOrderCanceled();
Toast.makeText(OrderConfirmActivity.this, R.string.pay_failed,
Toast.LENGTH_SHORT).show();
} @Override public void onWait() {
}
};
new出對象來,只需要調(diào)用pay方法就ok啦, 不過支付的回調(diào)我們還是必須的,當(dāng)然這個也不麻煩。這里說一下pay方法的幾個參數(shù),
- title 支付的標(biāo)題
- desc 支付的描述
- price 支付的金額
- sn 商品的唯一貨號
- url 服務(wù)器的回調(diào)url
這幾個參數(shù)在做支付的時候服務(wù)器都會給到,但是要注意一下,這幾個參數(shù)都不能為空或者空字符串,否則會支付失敗。
以上就是封裝Android支付寶支付的代碼,希望對大家的學(xué)習(xí)有所啟發(fā)。
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