听我说哈，先看效果：
字节跳动也开放了小程序给商家接入，可以在旗下APP如抖音、今日头条、今日头条极速版等应用中即点即用，基于庞大的数亿用户量为其引流，帮助商家获取用户流量，销售商品，其模式和微信小程序差不多。
1、后台管理地址：
https://developer.toutiao.com/
2、开发文档地址：
https://developer.toutiao.com/dev/cn/mini-app/develop/open-capacity/log-in/tt.login
不像微信和支付宝，字节跳动没有自己的支付，但是在小程序里集成了微信和支付宝支付可供商家满足支付的需求，接下来来看代码是怎么实现的。
首先要在小程序平台上开通支付功能，这个直接去看开发文档，里面的教程说得很清楚，这里就不再敖述。特别要注意的是，申请完微信支付，要登陆微信商户号对应的商户平台 - "产品中心" - "开发配置"自行配置H5 支付域名：snssdk.com，不然微信支付会报错。
再则字节跳动小程序集成微信和支付宝支付，前提要先调通单纯的微信H5支付和支付宝支付。
代码实现
实体类：TTPayParamIn
* @description
*/
@Data
public class TTPayParamIn {
/**
* 头条小程序分配给商户的商户id
*/
private String toutiaoMchId;
/**
* 头条小程序分配给商户的appid
*/
private String toutiaoMchAppId;
/**
* 头条小程序分配给商户的appSecrect
*/
private String toutiaoMchSecrect;
/**
* 唯一标识用户的id，小程序开发者请传open_id
*/
private String uid;
/**
* 金额，单位：元
*/
private Long totalAmount;
/**
* 商户订单名称
*/
private String subject;
/**
* 商户订单详情
*/
private String body;
/**
* 订单有效时间，单位：秒
*/
private String validTime;
/**
* 服务器异步通知http地址，请填支付宝下单接口对应的异步通知url
*/
private String notifyUrl;
/**
* 订单号
*/
private String outOrderNo;
}实体类：CheckoutCounterIn
* @description
*/
@Data
public class CheckoutCounterIn extends TTPayParamIn {
//支付宝支付信息
/**
* 支付宝应用id
*/
private String alipayAppId;
/**
* 支付宝应用私钥
*/
private String alipayAppPrivateKey;
/**
* 支付宝公钥
*/
private String alipayPublicKey;
/**
* 支付宝公共回传参数，如果请求时传递了该参数，则返回给商户时会在异步通知时将该参数原样返回。
*/
private String passbackParams;
/**
* 支付宝回调地址
*/
private String alipayNotifyUrl;
//微信支付信息
/**
* 微信小程序appid
*/
private String wxAppId;
/**
* 微信小程序商户id
*/
private String wxMchId;
/**
* 微信小程序商户支付apikey
*/
private String wxApiKey;
/**
* 微信小程序支付回调地址
*/
private String wxNotifyUrl;
/**
* 服务器地址 如：https://xxx.xxx.com/xxx
*/
private String serverPath;
/**
* 金额
*/
private Double wxMoney;
/**
* 微信自定义参数
*/
private String wxAttach;
}支付通用工具类：PayCommonUtil
* @description
*/
public class PayCommonUtil {
private static Logger log = LoggerFactory.getLogger(PayCommonUtil.class);
public static String CreateNoncestr() {
String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
String res = "";
for (int i = 0; i < 16; i++) {
Random rd = new Random();
res += chars.charAt(rd.nextInt(chars.length() - 1));
}
return res;
}
/**
*
* @Title: createSign
* @Description：sign签名
* @param characterEncoding 编码格式
* @param parameters 请求参数
* @param @return 设定文件
* @return String 返回类型
* @throws
*/
public static String createSign(String characterEncoding,SortedMap<Object,Object> parameters,String apiKey){
StringBuffer sb = new StringBuffer();
Set es = parameters.entrySet();
Iterator it = es.iterator();
while(it.hasNext()) {
Map.Entry entry = (Map.Entry)it.next();
String k = (String)entry.getKey();
Object v = entry.getValue();
if(null != v && !"".equals(v)
&& !"sign".equals(k) && !"key".equals(k)) {
sb.append(k + "=" + v + "&");
}
}
sb.append("key=" + apiKey);
String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase();
log.info("createSign方法sign签名=====:"+sign);
return sign;
}
/**
*
* @Title: getRequestXml
* @Description：将请求参数转换为xml格式的string
* @param parameters 请求参数
* @return String 返回类型
* @throws
*/
public static String getRequestXml(SortedMap<Object,Object> parameters){
StringBuffer sb = new StringBuffer();
sb.append("<xml>");
Set es = parameters.entrySet();
Iterator it = es.iterator();
while(it.hasNext()) {
Map.Entry entry = (Map.Entry)it.next();
String k = (String)entry.getKey();
String v = (String)entry.getValue();
if ("attach".equalsIgnoreCase(k)||"body".equalsIgnoreCase(k)||"sign".equalsIgnoreCase(k)) {
sb.append("<"+k+">"+"<![CDATA["+v+"]]></"+k+">");
}else {
sb.append("<"+k+">"+v+"</"+k+">");
}
}
sb.append("</xml>");
return sb.toString();
}
/**
*
* @Title: setXML
* @Description：返回给微信的参数
* @param return_code 返回编码
* @param return_msg 返回信息
* @param @return 设定文件
* @return String 返回类型
* @throws
*/
public static String setXML(String return_code, String return_msg) {
return "<xml><return_code><![CDATA[" + return_code
+ "]]></return_code><return_msg><![CDATA[" + return_msg
+ "]]></return_msg></xml>";
}
//对请求参数进行组装+key
public static String toutiaoAlipaySign(Map<String, Object> map,String salt) {
String result = getSignCheckContent(map);
if (StringUtils.isBlank(salt)) {
return result;
}
result=result + salt;
String sign = DigestUtils.md5Hex(result.toString());
log.info("toutiaoAlipaySign-content={};sign={}",result,sign);
return sign;
}
//组装参数
public static String getSignCheckContent(Map<String, Object> map) {
ArrayList<String> list = new ArrayList<String>();
for (Map.Entry<String, Object> entry : map.entrySet()) {
if (entry.getKey().equals("sign")) {
continue;
}
if (entry.getValue() != null && entry.getValue() != "") {
list.add(entry.getKey() + "=" + entry.getValue() + "&");
}
}
int size = list.size();
String[] arrayToSort = list.toArray(new String[size]);
Arrays.sort(arrayToSort, String.CASE_INSENSITIVE_ORDER);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < size; i++) {
sb.append(arrayToSort[i]);
}
String result = sb.toString();
result = result.substring(0, result.length()-1);
return result;
}
}请求工具类：CommonUtil
* @description
*/
public class CommonUtil {
private static Logger log = LoggerFactory.getLogger(CommonUtil.class);
/**
* @Title: httpsRequest
* @Description: 发送https请求 ---返回字符串
* @param requestUrl 请求地址
* @param requestMethod 请求方式（GET、POST）
* @param outputStr 提交的数据
* @return 返回微信服务器响应的信息
* @throws
*/
public static String httpsRequest(String requestUrl, String requestMethod, String outputStr) {
try {
// 创建SSLContext对象，并使用我们指定的信任管理器初始化
TrustManager[] tm = { new MyX509TrustManager() };
SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
sslContext.init(null, tm, new java.security.SecureRandom());
// 从上述SSLContext对象中得到SSLSocketFactory对象
SSLSocketFactory ssf = sslContext.getSocketFactory();
URL url = new URL(requestUrl);
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.setSSLSocketFactory(ssf);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
// 设置请求方式（GET/POST）
conn.setRequestMethod(requestMethod);
conn.setRequestProperty("content-type", "application/x-www-form-urlencoded");
//conn.setRequestProperty("Content-Type", "text/html;charset=utf-8");
// 当outputStr不为null时向输出流写数据
if (null != outputStr) {
OutputStream outputStream = conn.getOutputStream();
// 注意编码格式
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 从输入流读取返回内容
InputStream inputStream = conn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "UTF-8");
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String str = null;
StringBuffer buffer = new StringBuffer();
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
}
// 释放资源
bufferedReader.close();
inputStreamReader.close();
inputStream.close();
inputStream = null;
conn.disconnect();
System.out.println(buffer.toString());
return buffer.toString();
} catch (ConnectException ce) {
log.error("连接超时：{}", ce);
} catch (Exception e) {
log.error("https请求异常：{}", e);
}
return null;
}
}xml 工具类：XMLUtil
/**
* @description
*/
public class XMLUtil {
/**
* 解析xml,返回第一级元素键值对。如果第一级元素有子节点，则此节点的值是子节点的xml数据。
* @param strxml
* @return
* @throws JDOMException
* @throws IOException
*/
public static Map<String,String> doXMLParse(String strxml) throws JDOMException, IOException {
strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");
if(null == strxml || "".equals(strxml)) {
return null;
}
Map<String,String> m = new HashMap<>();
InputStream in = new ByteArrayInputStream(strxml.getBytes("UTF-8"));
SAXBuilder builder = new SAXBuilder();
Document doc = builder.build(in);
Element root = doc.getRootElement();
List list = root.getChildren();
Iterator it = list.iterator();
while(it.hasNext()) {
Element e = (Element) it.next();
String k = e.getName();
String v = "";
List children = e.getChildren();
if(children.isEmpty()) {
v = e.getTextNormalize();
} else {
v = XMLUtil.getChildrenText(children);
}
m.put(k, v);
}
//关闭流
in.close();
return m;
}
/**
* 获取子结点的xml
* @param children
* @return String
*/
public static String getChildrenText(List children) {
StringBuffer sb = new StringBuffer();
if(!children.isEmpty()) {
Iterator it = children.iterator();
while(it.hasNext()) {
Element e = (Element) it.next();
String name = e.getName();
String value = e.getTextNormalize();
List list = e.getChildren();
sb.append("<" + name + ">");
if(!list.isEmpty()) {
sb.append(XMLUtil.getChildrenText(list));
}
sb.append(value);
sb.append("</" + name + ">");
}
}
return sb.toString();
}
}微信H5支付，调用统一下单接口返回的 mweb_url 字段值：WeixinPay
* @description
*/
public class WeixinPay {
public static Logger logger = LoggerFactory.getLogger(WeixinPay.class);
/**
* 微信支付
* @param wxPayParamVo
* @param request
* @return
*/
public static SortedMap<Object, Object> weixinPayMobile(WxPayParamVo wxPayParamVo, HttpServletRequest request) {
SortedMap<Object, Object> params = new TreeMap<>();
try {
Double moneys = wxPayParamVo.getMoney() * 100;
// 我们发送给微信服务器的参数是xml格式的string，微信返回来的信息也是xml格式的string
// 获取package包
SortedMap<Object, Object> parameters = new TreeMap<Object, Object>();
parameters.put("appid", wxPayParamVo.getAppId());
parameters.put("mch_id", wxPayParamVo.getMchId());
parameters.put("nonce_str", PayCommonUtil.CreateNoncestr());
parameters.put("body", wxPayParamVo.getBody());
parameters.put("out_trade_no", wxPayParamVo.getOutTradeNo());// 订单号
parameters.put("total_fee", moneys.longValue() + "");// 订单总金额，单位为分，不能带小数点 moneys.longValue()
parameters.put("spbill_create_ip", request.getRemoteAddr());// 终端ip
parameters.put("notify_url", wxPayParamVo.getNotifyUrl());// 支付成功微信端回调我们接收返回信息的控制器地址
parameters.put("trade_type", wxPayParamVo.getTradeType());// 交易类型：JSAPI--JSAPI支付（或小程序支付）、NATIVE--Native支付、APP--app支付，MWEB--H5支付
parameters.put("attach", wxPayParamVo.getAttach());// 附加数据--支付类型
String sign = PayCommonUtil.createSign("UTF-8", parameters, wxPayParamVo.getApiKey());// 进行签名
parameters.put("sign", sign);
// 将请求的参数转为字符串
String requestXML = PayCommonUtil.getRequestXml(parameters);
logger.info("post请求微信支付参数============：" + requestXML);
// 将这些参数以POST方式调用微信统一支付接口
String result = CommonUtil.httpsRequest("https://api.mch.weixin.qq.com/pay/unifiedorder", "POST", requestXML);
logger.info("统一支付接口返回的参数==============：" + result.toString());
// 解析微信返回的信息，以Map形式存储便于取值
@SuppressWarnings("unchecked")
Map<String, String> map = XMLUtil.doXMLParse(result);
logger.info("return_code===============:" + map.get("return_code") + "--------------result_code:" + map.get("result_code"));
logger.info("通过微信支付统一下单接口获取prepay_id==============:" + map.get("prepay_id"));
params.put("prepayId", map.get("prepay_id"));
params.put("mwebUrl", map.get("mweb_url"));
return params;
} catch (JDOMException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
//============结束==================
return params;
}
/**
* 微信支付回调
* @param API_KEY
* @param request
* @param response
* @return
*/
public static JsonModel weixinPayCallBack(String API_KEY, HttpServletRequest request, HttpServletResponse response) {
logger.info("***************************微信端订单【商城 小程序】进入回调页面***************************");
CallBackVo backVo = new CallBackVo();
try {
// 创建支付应答对象
InputStream inStream = request.getInputStream();
ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = inStream.read(buffer)) != -1) {
outSteam.write(buffer, 0, len);
}
outSteam.close();
inStream.close();
String result = new String(outSteam.toByteArray(), "utf-8");// 获取微信调用我们notify_url的返回信息
logger.info("微支付回调返回参数：=====" + result);
// 进行验签操作
ResponseHandler resHandler = new ResponseHandler(request, null);
resHandler.doParse(result);
//resHandler.setKey(WeiXinPayConfig.API_KEY);
resHandler.setKey(API_KEY);
// 创建请求对象
// 财付通签名认证
if (resHandler.isValidSign() == true) {
logger.info("===========财付通签名认证成功=====");
// 商户订单号
String out_trade_no = resHandler.getParameter("out_trade_no");
// 金额,以分为单位
String total_fee = resHandler.getParameter("total_fee");
// 获取附加数据
String attach = resHandler.getParameter("attach");
String[] attachArray = attach.split("&");
//微信支付订单号
String transactionId = resHandler.getParameter("transaction_id");
logger.info("微信支付订单号" + transactionId);
// 支付结果
String result_code = resHandler.getParameter("result_code");
logger.info("********签名返回值状态result_code：" + result_code);
//objectId是微信预下单时自定义参数，一般传入订单号
backVo.setObjectId(attachArray[0]);
//attach是微信预下单时自定义参数，如123&456&789
backVo.setAttach(attach);
backVo.setOutTradeNo(out_trade_no);
backVo.setWeixinPayNo(transactionId);
// 判断签名及结果
if (result_code.equalsIgnoreCase("SUCCESS")) {
logger.info("===========【商城 小程序】签名SUCCESS即时到账处理业务开始=====");
// ------------------------------
// 即时到账处理业务开始
// ------------------------------
String money = AmountUtils.changeF2Y(total_fee);
logger.info("===========【商城 小程序】success 后台通知成功=====");
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write(PayCommonUtil.setXML("SUCCESS", "回调成功=== " + "金额：" + money).getBytes()); // 告诉微信服务器，我收到信息了
outputStream.flush();
outputStream.close();
// 给财付通系统发送成功信息，财付通系统收到此结果后不再进行后续通知
logger.info("商户订单号：" + out_trade_no + "微信商城 小程序支付回调成功");
return JsonModel.toSuccess(backVo);
} else {
logger.error("微信【商城 小程序】支付失败");
return JsonModel.toFail(backVo, "微信支付失败");
}
} else {// MD5签名失败
logger.error("微信【商城 小程序】支付MD5签名失败");
return JsonModel.toFail(null, "支付MD5签名失败");
}
} catch (Exception e) {
logger.error("微信支付【商城 小程序】异常=====：" + e.getMessage());
e.printStackTrace();
return JsonModel.toFail(null, "微信支付异常");
}
}
}支付宝app支付已经在另一篇文章写过了，请自行参考 [字节跳动集成支付宝支付] 里面的内容
字节跳动小程序收银台：ToutiaoMicroApp
* @description
*/
public class ToutiaoMicroApp {
private static Logger logger = LoggerFactory.getLogger(ToutiaoMicroApp.class);
/**
* 字节跳动小程序收银台，支付宝APP支付、微信H5支付、银行卡支付
* @return
*/
public static JSONObject microCheckoutCounter(CheckoutCounterIn in,HttpServletRequest request) {
Map<String, Object> payParams = new HashMap<>();
payParams.put("merchant_id", in.getToutiaoMchId());
payParams.put("app_id", in.getToutiaoMchAppId());
payParams.put("sign_type", "MD5");
payParams.put("timestamp", Long.toString(System.currentTimeMillis() / 1000));
payParams.put("product_code", "pay");
payParams.put("trade_type", "H5");
payParams.put("payment_type", "direct");
payParams.put("version", "2.0");
payParams.put("out_order_no", in.getOutOrderNo());
payParams.put("uid", in.getUid());
payParams.put("total_amount", in.getTotalAmount());
payParams.put("currency", "CNY");
payParams.put("subject", in.getSubject());
payParams.put("body", in.getBody());
payParams.put("trade_time", Long.toString(System.currentTimeMillis() / 1000));
payParams.put("valid_time", in.getValidTime());
payParams.put("notify_url", in.getNotifyUrl());
//调用支付宝 App 支付所需的支付请求参数（形如 'app_id=xxx&biz_content=xxx...'）
payParams.put("alipay_url", "");
WxPayParamVo vo = new WxPayParamVo();
vo.setApiKey(in.getWxApiKey());
vo.setAppId(in.getWxAppId());
vo.setAttach(in.getWxAttach());
vo.setBody(in.getBody());
vo.setMchId(in.getWxMchId());
vo.setMoney(in.getWxMoney());
vo.setNotifyUrl(in.getWxNotifyUrl());
vo.setServerPath(in.getServerPath());
vo.setTradeType("MWEB");
vo.setOutTradeNo(in.getOutOrderNo());
SortedMap<Object, Object> params = WeixinPay.weixinPayMobile(vo,request);
//调用微信 H5 支付统一下单接口 返回的 mweb_url 字段值（请注意不要进行 urlencode）
payParams.put("wx_url", params.get("mwebUrl").toString());
payParams.put("wx_type", "MWEB");
String sign = PayCommonUtil.toutiaoAlipaySign(payParams, in.getToutiaoMchSecrect());
payParams.put("sign", sign);
payParams.put("ip", request.getRemoteAddr());
payParams.put("deviceId", Long.toString(System.currentTimeMillis()));
payParams.put("prepayId", params.get("prepayId").toString());
logger.info("parameters==={}",payParams);
return JSONObject.fromObject(payParams);
}
}将payParams实体类字段内容返回给前端，前端调用tt.pay唤起收银台支付
前端代码：
orderInfo: {
app_id: "800000040005",
sign_type: "MD5",
out_order_no: "MicroApp7075638135",
merchant_id: "1300000004",
timestamp: "1566720681",
product_code: "pay",
payment_type: "direct",
total_amount: 1,
trade_type: "H5",
uid: "2019012211",
version: "2.0",
currency: "CNY",
subject: "microapp test",
body: "microapp test",
trade_time: "1566720681",
valid_time: "300",
notify_url: "https://tp-pay.snssdk.com/cashdesk/test/paycallback",
wx_url:
"https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?prepay_id=wx25161122572189727ea14cfd1832451500&package=2746219290",
wx_type: "MWEB",
alipay_url:
"alipay_sdk=alipay-sdk-java-3.4.27.ALL&app_id=2018061460417275&biz_content=%7B%22body%22%3A%22%E6%B5%8B%E8%AF%95%E8%AE%A2%E5%8D%95%22%2C%22extend_params%22%3A%7B%7D%2C%22out_trade_no%22%3A%2211908250000028453790%22%2C%22product_code%22%3A%22QUICK_MSECURITY_PAY%22%2C%22seller_id%22%3A%222088721387102560%22%2C%22subject%22%3A%22%E6%B5%8B%E8%AF%95%E8%AE%A2%E5%8D%95%22%2C%22timeout_express%22%3A%22599m%22%2C%22total_amount%22%3A%220.01%22%7D&charset=utf-8&format=json&method=alipay.trade.app.pay¬ify_url=http%3A%2F%2Fapi-test-pcs.snssdk.com%2Fgateway%2Fpayment%2Fcallback%2Falipay%2Fnotify%2Fpay&sign=D2A6ua51os2aIzIH907ppK7Bd9Q2Kk5h7AtKPdudP%2Be%2BNTtAkp0Lfojtgl4BMOIQ3Z7cWyYMx6nk4qbntSx7aZnBhWAcImLbVVr1cmaYAedmrmJG%2B3f8G5TfAZu53ESzUgk02%2FhU1XV0iXRyE8TdEJ97ufmxwsUEc7K0EvwEFDIBCJg73meQtyCRFgCqYRWvmxetQgL7pwfKXpFXjAYsvFrRBas2YGYt689XpBS321g%2BZ8SZ0JOtLPWqhROzEs3dnAtWBW15y3NzRiSNi5rPzah4cWd4SgT0LZHmNf3eDQEHEcPmofoWfnA4ao75JmP95aLUxerMumzo9OwqhiYOUw%3D%3D&sign_type=RSA2×tamp=2019-08-25+16%3A11%3A22&version=1.0",
sign: "15aa99cd80878661a4d442b7540bdf96",
risk_info: '{"ip":"127.0.0.1","device_id":"485737374363263"}'
},
service: 1,
getOrderStatus(res) {
let { out_order_no } = res;
return new Promise(function(resolve, reject) {
// 商户前端根据 out_order_no 请求商户后端查询微信支付订单状态
tt.request({
url: "<your-backend-url>",
success(res) {
// 商户后端查询的微信支付状态，通知收银台支付结果
resolve({ code: 0 | 1 | 2 | 3 | 9 });
},
fail(err) {
reject(err);
}
});
});
},
success(res) {
if (res.code == 0) {
// 支付成功处理逻辑，只有res.code=0时，才表示支付成功
// 但是最终状态要以商户后端结果为准
}
},
fail(res) {
// 调起收银台失败处理逻辑
}
});山水有相逢，来日皆可期，谢谢阅读，我们再会
我手中的金箍棒，上能通天，下能探海
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