支付宝支付的流程

因为项目中需要用到支付，鼓捣了一会，现在备份一下流程，免得以后忘记了：

• 在支付宝开放平台注册账号，创建应用，提交审核之流的，拿到公钥私钥之类的就不说了，多谢公司的后台小哥和ios大哥帮忙上传。
• 导入支付宝的jar包，记得as library
• 配置android清单文件：

    <!-- this is for alipay -->        <activity            android:name="com.alipay.sdk.app.H5PayActivity"            android:configChanges="orientation|keyboardHidden|navigation"            android:exported="false"            android:screenOrientation="behind" >        </activity>        <activity            android:name="com.alipay.sdk.auth.AuthActivity"            android:configChanges="orientation|keyboardHidden|navigation"            android:exported="false"            android:screenOrientation="behind" >        </activity><pre name="code" class="html">    <uses-permission android:name="android.permission.INTERNET" />    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />    <uses-permission android:name="android.permission.READ_PHONE_STATE" />    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

  
  
  
  
•   配置混淆文件：

  # this is for alipay  add by ly in 2016年7月19日21:46:01-libraryjars libs/alipaySDK-20150602.jar -keep class com.alipay.android.app.IAlixPay{*;}-keep class com.alipay.android.app.IAlixPay$Stub{*;}-keep class com.alipay.android.app.IRemoteServiceCallback{*;}-keep class com.alipay.android.app.IRemoteServiceCallback$Stub{*;}-keep class com.alipay.sdk.app.PayTask{ public *;}-keep class com.alipay.sdk.app.AuthTask{ public *;}

  
  
• 导入相应的工具类：

  package utils;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 groupsif (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 spacesint 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 nullb1 = 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 charactersif (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 3cQlb3 = 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 whitespaceint newSize = 0;int len = data.length;for (int i = 0; i < len; i++) {if (!isWhiteSpace(data[i])) {data[newSize++] = data[i];}}return newSize;}}

  
  

  package utils;import android.text.TextUtils;public 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");}}}@Overridepublic 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;}}

  
  

  package utils;import java.security.KeyFactory;import java.security.PrivateKey;import java.security.spec.PKCS8EncodedKeySpec;public 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;    }}

  
  
•      建议自己写一个配置文件，把需要的东西放在里面：

• package AliPayConfig;public class AliPayConfig {// 商户PIDprivate static final String PARTNER = "xxx";// 商户收款账号private static final String SELLER = "[e-mail]";// 商户私钥，pkcs8格式private static final String RSA_PRIVATE = "xxx//ZwpS27" +            "KbxhUzHKiyvrhH1zf1UaDJLg5KzTBk6ZL09+x+x+ZWRmeKPGT" +            "x/Fuu/ztn+k" +            "x" +            "4LJcnLk0+YhSkfMr2EQWvOFvS9BNDbtp8qyDg+K6c1GZyrdLytBBl9dnznJL6eN/" +            "x+gz1JhkipaWzeoTYI7n" +x            "8mZVEx8iL6UQJ+x/zCX3QC6UCssSajK" +x            "knQRAkAt6HrSGh4uJWKEEvQqT+9Y0Q+xwpD6ZZeaSO45uGZqbaK55wZjcTXCZo9n" +            "n8/DfE7n+xx/Wez1" +            "KYigfYpzUwmOjUW7q2FxbwddTky9+4qi9bd3MI9mh+8yHIOy1OHhAkEAiTZoyPWO" +            "x/xtLIuWSRkJwhJLBrDEnNetiUiflcxMYTPL/x" +            "T6nTFFEMzG6eDA==";// 支付宝公钥private static final String RSA_PUBLIC = "";public static String getPartner() {return PARTNER;}public static String getSeller() {return SELLER;}public static String getRsaPrivate() {return RSA_PRIVATE;}public static String getRsaPublic() {return RSA_PUBLIC;}}

•    ok,基本的配置就完成了，现在开始做正文了：订单的内容应该是从服务器拿到的，在进入支付页面的时候我们应该请求一下我们自己的服务器，从里面拿到我们要的信息，比如支付信息，支付金额等等东西

  /** * 这些东西应该是从服务器返回的数据才对，但是我这个demo，就算了 *  * { "message": "操作成功", "status": "200", "result": { "code": * "1607192158538498", "return_url": * "http://www.jxxx.cn:8080/xxxxx-app/pay/return_url_doctor", "subjectName": * "医x转运", "subjectBody": "医疗转xxxx", "fee": null } } *  *  */private String subject = "医疗转运"; // 商品名称private String body = "医疗转运服务"; // 商品描述private String notify_url = "http://www.xxxx.cn:8080/xxx-app/pay/return_url_doctor"; // 回调地址private String code = "xxxxxxx"; // 订单号private String fee = "0.01"; // 支付金额

  
   
• 点击的时候我们先检查是不是本地配置都没问题了

  /** * 支付宝支付 */private void payByAliPay() {// 1支付宝第一步，判断本地是不是没有配置好相关的信息，如果是弹窗警告，并且不执行下一步if (TextUtils.isEmpty(AliPayConfig.getPartner())|| TextUtils.isEmpty(AliPayConfig.getRsaPrivate())|| TextUtils.isEmpty(AliPayConfig.getSeller())) {new AlertDialog.Builder(this).setTitle("警告").setMessage("需要配置PARTNER | RSA_PRIVATE| SELLER").setPositiveButton("确定",new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialoginterface, int i) {//finish();}}).show();return;}

•  配置没问题的时候我们进行下一步：

  /**<span style="white-space:pre"></span> * 支付宝支付<span style="white-space:pre"></span> */<span style="white-space:pre"></span>private void payByAliPay() {<span style="white-space:pre"></span>// 1支付宝第一步，判断本地是不是没有配置好相关的信息，如果是弹窗警告，并且不执行下一步<span style="white-space:pre"></span>if (TextUtils.isEmpty(AliPayConfig.getPartner())<span style="white-space:pre"></span>|| TextUtils.isEmpty(AliPayConfig.getRsaPrivate())<span style="white-space:pre"></span>|| TextUtils.isEmpty(AliPayConfig.getSeller())) {<span style="white-space:pre"></span>new AlertDialog.Builder(this)<span style="white-space:pre"></span>.setTitle("警告")<span style="white-space:pre"></span>.setMessage("需要配置PARTNER | RSA_PRIVATE| SELLER")<span style="white-space:pre"></span>.setPositiveButton("确定",<span style="white-space:pre"></span>new DialogInterface.OnClickListener() {<span style="white-space:pre"></span>public void onClick(<span style="white-space:pre"></span>DialogInterface dialoginterface, int i) {<span style="white-space:pre"></span>//<span style="white-space:pre"></span>finish();<span style="white-space:pre"></span>}<span style="white-space:pre"></span>}).show();<span style="white-space:pre"></span>return;<span style="white-space:pre"></span>}<span style="white-space:pre"></span>// 2支付第二步，已经判断好本地的支付宝数据，那么开始进行订单处理<span style="white-space:pre"></span>// 2.1获取订单信息<span style="white-space:pre"></span>String orderinfo = getOrderInfo(subject, body, notify_url, code, fee);<span style="white-space:pre"></span>// 2.2对订单进行签名 特别注意，这里的签名逻辑需要放在服务端，切勿将私钥泄露在代码中！<span style="white-space:pre"></span>String Sign = sign(orderinfo);<span style="white-space:pre"></span>// 2.3对订单进行url编码<span style="white-space:pre"></span>try {<span style="white-space:pre"></span>/**<span style="white-space:pre"></span> * 仅需对sign 做URL编码<span style="white-space:pre"></span> */<span style="white-space:pre"></span>Sign = URLEncoder.encode(Sign, "UTF-8");<span style="white-space:pre"></span>} catch (UnsupportedEncodingException e) {<span style="white-space:pre"></span>e.printStackTrace();<span style="white-space:pre"></span>}<span style="white-space:pre"></span>/**<span style="white-space:pre"></span> * 完整的符合支付宝参数规范的订单信息<span style="white-space:pre"></span> */<span style="white-space:pre"></span>final String payInfo = orderinfo + "&sign=\"" + Sign + "\"&"<span style="white-space:pre"></span>+ getSignType();<span style="white-space:pre"></span>Runnable payRunnable = new Runnable() {<span style="white-space:pre"></span>@Override<span style="white-space:pre"></span>public void run() {<span style="white-space:pre"></span>// 构造PayTask 对象<span style="white-space:pre"></span>PayTask alipay = new PayTask(MainActivity.this);<span style="white-space:pre"></span>// 调用支付接口，获取支付结果<span style="white-space:pre"></span>String result = alipay.pay(payInfo, true);<span style="white-space:pre"></span>Message msg = new Message();<span style="white-space:pre"></span>msg.what = SDK_PAY_FLAG;<span style="white-space:pre"></span>msg.obj = result;<span style="white-space:pre"></span>mHandler.sendMessage(msg);<span style="white-space:pre"></span>}<span style="white-space:pre"></span>};<span style="white-space:pre"></span>// 必须异步调用<span style="white-space:pre"></span>Thread payThread = new Thread(payRunnable);<span style="white-space:pre"></span>payThread.start();<span style="white-space:pre"></span>}<span style="white-space:pre"></span>/**<span style="white-space:pre"></span> * 1,create the order info. 创建订单信息<span style="white-space:pre"></span> */<span style="white-space:pre"></span>private String getOrderInfo(String subject, String body, String notify_url,<span style="white-space:pre"></span>String code, String price) {<span style="white-space:pre"></span>// 签约合作者身份ID<span style="white-space:pre"></span>String orderInfo = "partner=" + "\"" + AliPayConfig.getPartner() + "\"";<span style="white-space:pre"></span>// 签约卖家支付宝账号<span style="white-space:pre"></span>orderInfo += "&seller_id=" + "\"" + AliPayConfig.getSeller() + "\"";<span style="white-space:pre"></span>// 商户网站唯一订单号<span style="white-space:pre"></span>orderInfo += "&out_trade_no=" + "\"" + code + "\"";<span style="white-space:pre"></span>// 商品名称<span style="white-space:pre"></span>orderInfo += "&subject=" + "\"" + subject + "\"";<span style="white-space:pre"></span>// 商品详情<span style="white-space:pre"></span>orderInfo += "&body=" + "\"" + body + "\"";<span style="white-space:pre"></span>// 商品金额<span style="white-space:pre"></span>orderInfo += "&total_fee=" + "\"" + price + "\"";<span style="white-space:pre"></span>// 服务器异步通知页面路径<span style="white-space:pre"></span>orderInfo += "&notify_url=" + "\"" + notify_url + "\"";<span style="white-space:pre"></span>// 服务接口名称， 固定值<span style="white-space:pre"></span>orderInfo += "&service=\"mobile.securitypay.pay\"";<span style="white-space:pre"></span>// 支付类型， 固定值<span style="white-space:pre"></span>orderInfo += "&payment_type=\"1\"";<span style="white-space:pre"></span>// 参数编码， 固定值<span style="white-space:pre"></span>orderInfo += "&_input_charset=\"utf-8\"";<span style="white-space:pre"></span>// 设置未付款交易的超时时间<span style="white-space:pre"></span>// 默认30分钟，一旦超时，该笔交易就会自动被关闭。<span style="white-space:pre"></span>// 取值范围：1m～15d。<span style="white-space:pre"></span>// m-分钟，h-小时，d-天，1c-当天（无论交易何时创建，都在0点关闭）。<span style="white-space:pre"></span>// 该参数数值不接受小数点，如1.5h，可转换为90m。<span style="white-space:pre"></span>orderInfo += "&it_b_pay=\"30m\"";<span style="white-space:pre"></span>// extern_token为经过快登授权获取到的alipay_open_id,带上此参数用户将使用授权的账户进行支付<span style="white-space:pre"></span>// orderInfo += "&extern_token=" + "\"" + extern_token + "\"";<span style="white-space:pre"></span>// 支付宝处理完请求后，当前页面跳转到商户指定页面的路径，可空<span style="white-space:pre"></span>orderInfo += "&return_url=\"m.alipay.com\"";<span style="white-space:pre"></span>// 调用银行卡支付，需配置此参数，参与签名， 固定值 （需要签约《无线银行卡快捷支付》才能使用）<span style="white-space:pre"></span>// orderInfo += "&paymethod=\"expressGateway\"";<span style="white-space:pre"></span>return orderInfo;<span style="white-space:pre"></span>}<span style="white-space:pre"></span>/**<span style="white-space:pre"></span> * 3, sign the order info. 对订单信息进行签名<span style="white-space:pre"></span> * <span style="white-space:pre"></span> * @param content<span style="white-space:pre"></span> *            待签名订单信息<span style="white-space:pre"></span> */<span style="white-space:pre"></span>private String sign(String content) {<span style="white-space:pre"></span>return SignUtils.sign(content, AliPayConfig.getRsaPrivate());<span style="white-space:pre"></span>}<span style="white-space:pre"></span>/**<span style="white-space:pre"></span> * 4, get the sign type we use. 获取签名方式<span style="white-space:pre"></span> */<span style="white-space:pre"></span>private String getSignType() {<span style="white-space:pre"></span>return "sign_type=\"RSA\"";<span style="white-space:pre"></span>}

我们在handler里面的处理是：

@SuppressLint("HandlerLeak")private Handler mHandler = new Handler() {@SuppressWarnings("unused")public void handleMessage(Message msg) {switch (msg.what) {case SDK_PAY_FLAG: {PayResult payResult = new PayResult((String) msg.obj);/** * 同步返回的结果必须放置到服务端进行验证（验证的规则请看https://doc.open.alipay.com/doc2/ * detail.htm?spm=0.0.0.0.xdvAU6&treeId=59&articleId=103665& * docType=1) 建议商户依赖异步通知 */String resultInfo = payResult.getResult();// 同步返回需要验证的信息String resultStatus = payResult.getResultStatus();// 判断resultStatus 为“9000”则代表支付成功，具体状态码代表含义可参考接口文档if (TextUtils.equals(resultStatus, "9000")) {Toast.makeText(MainActivity.this, "支付成功", Toast.LENGTH_SHORT).show();} else {// 判断resultStatus 为非"9000"则代表可能支付失败// "8000"代表支付结果因为支付渠道原因或者系统原因还在等待支付结果确认，最终交易是否成功以服务端异步通知为准（小概率状态）if (TextUtils.equals(resultStatus, "8000")) {Toast.makeText(MainActivity.this, "支付结果确认中",Toast.LENGTH_SHORT).show();} else {// 其他值就可以判断为支付失败，包括用户主动取消支付，或者系统返回的错误Toast.makeText(MainActivity.this, "支付失败",Toast.LENGTH_SHORT).show();}}break;}default:break;}}};