app调用微信支付疯狂踩坑（前端uniapp后端java）

之前有做了小程序的微信支付以为app的小程序的流程应该差不多&＃xff0c;就直接把代码c过来然后发现不行&＃xff0c;踩了一堆坑&＃xff0c;硬生生耗了俩周&＃xff08;中间还有其他事情耽搁了&＃xff09;
小程序调起微信支付

目录标题

• • 准备工作
  • 后台代码
  • 前端代码
  • 踩的坑

准备工作

微信商户平台注册
微信开放平台注册
注册会需要营业执照&＃xff0c;申请支付接口的话会需要300元的审核费用&＃xff0c;具体就不多说了&＃xff0c;这个不难而且网上教程一堆。

先上代码吧&＃xff0c;最后再说踩的坑

后台代码

package com.ruoyi.web.controller.defalt;import com.ruoyi.common.core.controller.BaseController;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.system.domain.COrder;
import com.ruoyi.system.domain.CUser;
import com.ruoyi.system.service.ICOrderService;
import com.ruoyi.system.service.ICUserService;
import com.ruoyi.util.RedisUtil;
import com.ruoyi.util.wx.PayForUtil;
import com.ruoyi.util.wx.WXPayUtils;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import java.io.*;
import java.util.*;/*** 登录注册Controller* * &＃64;author 浮生* &＃64;date 2019-09-16*/
&＃64;Controller
&＃64;RequestMapping("/front")
public class FrontBuyController extends BaseController {&＃64;AutowiredRedisUtil redis;&＃64;Autowiredprivate ICOrderService orderService;&＃64;Autowiredprivate ICUserService cUserService;String appId &＃61; "微信开放平台申请的移动端的appid";// 商户号String partnerId &＃61; "微信商户平台的商户号";//商户号String mch_id &＃61; partnerId;//扩展字段&＃xff0c;暂填写固定值Sign&＃61;WXPay&＃xff0c;java无法使用package关键字作为变量名所以用packageValue替代String packageValue &＃61; "Sign&＃61;WXPay";// 第一次发起支付请求的接口地址String pay_url &＃61; "https://api.mch.weixin.qq.com/pay/unifiedorder";// key为商户平台设置的密钥keyString WXKeHukey &＃61; "商户平台设置的密钥";// 本机的ip地址String spbill_create_ip &＃61; "本机的ip地址";// 支付回调地址String notify_url &＃61; "支付回调地址";// 调起支付方式String trade_type &＃61; "APP";// 签名类型String SIGNTYPE &＃61; "MD5";/*** a调起微信预支付接口* * &＃64;param money&＃xff1a;支付金额* &＃64;return* &＃64;throws UnsupportedEncodingException */&＃64;GetMapping("/buyStepOne")&＃64;ResponseBody&＃64;CrossOrigin(allowCredentials &＃61; "true")public AjaxResult buyStepOne(Long money,String redisKey) throws UnsupportedEncodingException {if(redis.hasKey(redisKey)) {//获取当前用户idLong userId &＃61; Long.parseLong(redis.get(redisKey).toString());// 通过course_id查询购买的课程信息System.out.println(money);// 生成的随机字符串String nonce_str &＃61; StringUtils.getRandomString(32);// 商品名称String body &＃61; new String("shuangxi-huiyuan".getBytes("ISO-8859-1"), "UTF-8");// 商户订单号&＃xff08;先用时间加上3位随机数代替&＃xff09;Date date &＃61; new Date();String orderNo &＃61; date.getTime() &＃43; StringUtils.getRandomString(3) &＃43; "";Map packageParams &＃61; new HashMap();// 小程序ID,微信分配的小程序IDpackageParams.put("appid", appId);// 小程序ID,微信分配的小程序IDpackageParams.put("attach", userId.toString());// 商户号,微信支付分配的商户号packageParams.put("mch_id", mch_id);// 随机字符串&＃xff0c;长度要求在32位以内。packageParams.put("nonce_str", nonce_str);// 商品简单描述packageParams.put("body", body);// 商户系统内部订单号&＃xff0c;要求32个字符内&＃xff0c;只能是数字、大小写字母_-|*且在同一个商户号下唯一packageParams.put("out_trade_no", orderNo);// 商户订单号// 订单总金额&＃xff0c;单位为分packageParams.put("total_fee", money.toString());// 终端IP,支持IPV4和IPV6两种格式的IP地址。调用微信支付API的机器IPpackageParams.put("spbill_create_ip", spbill_create_ip);// 异步接收微信支付结果通知的回调地址&＃xff0c;通知url必须为外网可访问的url&＃xff0c;不能携带参数。packageParams.put("notify_url", notify_url);// 交易类型(JSAPI--JSAPI支付&＃xff08;或小程序支付&＃xff09;、NATIVE--Native支付、APP--app支付&＃xff0c;MWEB--H5支付&＃xff0c;不同trade_type决定了调起支付的方式&＃xff0c;请根据支付产品正确上传)packageParams.put("trade_type", trade_type);// 除去数组中的空值和签名参数packageParams &＃61; WXPayUtils.paraFilter(packageParams);String prestr &＃61; WXPayUtils.createLinkString(packageParams); // 把数组所有元素&＃xff0c;按照“参数&＃61;参数值”的模式用“&”字符拼接成字符串System.out.println("签名数据"&＃43;prestr);// MD5运算生成签名&＃xff0c;这里是第一次签名&＃xff0c;用于调用统一下单接口,key为商户平台设置的密钥keyString mysign &＃61; WXPayUtils.sign(prestr, WXKeHukey, "utf-8").toUpperCase();System.out.println("&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;第一次签名&＃xff1a;" &＃43; mysign &＃43; "&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;");// 拼接统一下单接口使用的xml数据&＃xff0c;要将上一步生成的签名一起拼接进去String xml &＃61; "" &＃43; "" &＃43; appId &＃43; "" &＃43; "" &＃43; userId &＃43; "" &＃43; "" &＃43; "" &＃43; mch_id &＃43; "" &＃43; "" &＃43; nonce_str &＃43; ""&＃43; "" &＃43; notify_url &＃43; "" &＃43; "" &＃43; orderNo &＃43; ""&＃43; "" &＃43; spbill_create_ip &＃43; "" &＃43; "" &＃43; money &＃43; "" &＃43; "" &＃43; trade_type &＃43; "" &＃43; "" &＃43; mysign &＃43; ""&＃43; "";System.out.println("调试模式_统一下单接口 请求XML数据&＃xff1a;" &＃43; xml);// 调用统一下单接口&＃xff0c;并接受返回的结果String result &＃61; WXPayUtils.httpRequest(pay_url, "POST", xml);System.out.println("调试模式_统一下单接口 返回XML数据&＃xff1a;" &＃43; result);// 将解析结果存储在HashMap中
// Map map &＃61; doXMLParse(result);// String return_code &＃61; (String) map.get("return_code");//返回状态码// 解析结果&＃xff0c;将结果存在map中Map map &＃61; WXPayUtils.doXMLToMap(result);System.out.println(map);String return_code &＃61; (String) map.get("return_code");// 返回给移动端需要的参数Map response &＃61; new HashMap();if (return_code &＃61;&＃61; "SUCCESS" || return_code.equals(return_code)) {// 业务结果String prepay_id &＃61; (String) map.get("prepay_id");// 返回的预付单信息response.put("nonceStr", (String) map.get("nonceStr"));response.put("package", "prepay_id&＃61;" &＃43; prepay_id);Long timeStamp &＃61; System.currentTimeMillis() / 1000;response.put("timeStamp", timeStamp &＃43; "");// 这边要将返回的时间戳转化成字符串&＃xff0c;不然小程序端调用wx.requestPayment方法会报签名错误String stringSignTemp &＃61; "appId&＃61;" &＃43; appId &＃43; "&nonceStr&＃61;" &＃43; (String) map.get("nonceStr") &＃43; "&package&＃61;prepay_id&＃61;" &＃43; prepay_id&＃43; "&signType&＃61;" &＃43; SIGNTYPE &＃43; "&timeStamp&＃61;" &＃43; timeStamp;// 再次签名&＃xff0c;这个签名用于小程序端调用wx.requesetPayment方法
// String paySign &＃61; WXPayUtils.sign(stringSignTemp, WXKeHukey, "utf-8").toUpperCase();
// System.out.println("&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;第二次签名&＃xff1a;" &＃43; paySign &＃43; "&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;");// response.put("paySign", paySign);response.put("appid", appId);response.put("sign", (String) map.get("sign"));response.put("mysign",mysign);// 将订单和报名信息添加到数据库COrder c_order &＃61; new COrder();c_order.setCreateTime(new Date());c_order.setOrderMoney(money);c_order.setOrderFlag(0);c_order.setOrderNumber(orderNo);c_order.setUserId(userId);orderService.insertCOrder(c_order);}System.out.println(response);AjaxResult resultall &＃61; new AjaxResult();return resultall.success(response);}else {return error("未登陆");}}/*** 微信支付回调方法*/&＃64;GetMapping("/buySteptwo")&＃64;ResponseBody&＃64;CrossOrigin(allowCredentials &＃61; "true")public AjaxResult buySteptwo() {try {//读取参数 InputStream inputStream ; StringBuffer sb &＃61; new StringBuffer(); inputStream &＃61; getRequest().getInputStream(); String s ; BufferedReader in &＃61; new BufferedReader(new InputStreamReader(inputStream, "UTF-8")); while ((s &＃61; in.readLine()) !&＃61; null){ sb.append(s); } in.close(); inputStream.close(); //解析xml成map Map m &＃61; new HashMap(); m &＃61; doXMLParse(sb.toString());//过滤空 设置 TreeMap SortedMap packageParams &＃61; new TreeMap(); Iterator it &＃61; m.keySet().iterator(); while (it.hasNext()) { String parameter &＃61; it.next(); String parameterValue &＃61; m.get(parameter); String v &＃61; ""; if(null !&＃61; parameterValue) { v &＃61; parameterValue.trim(); } packageParams.put(parameter, v); } // 微信支付的API密钥 String key &＃61; WXKeHukey; // key //判断签名是否正确 if(PayForUtil.isTenpaySign("UTF-8", packageParams,key)) { //------------------------------ //处理业务开始 //------------------------------ String resXml &＃61; ""; if("SUCCESS".equals((String)packageParams.get("result_code"))){ System.out.println("&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;回调参数&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;&＃43;");System.out.println(packageParams);// 这里是支付成功 //执行自己的业务逻辑开始String app_id &＃61; (String)packageParams.get("appid");String mch_id &＃61; (String)packageParams.get("mch_id"); String openid &＃61; (String)packageParams.get("openid"); String is_subscribe &＃61; (String)packageParams.get("is_subscribe");//是否关注公众号//公用回传参数 我设置的是 "优惠券ID;课程Type:用户ID"String attach &＃61; (String)packageParams.get("attach");//商户订单号String out_trade_no &＃61; ((String)packageParams.get("out_trade_no")); out_trade_no &＃61; out_trade_no.replace(" ", "");//付款金额【以分为单位】String total_fee &＃61; (String)packageParams.get("total_fee"); //微信生成的交易订单号String transaction_id &＃61; (String)packageParams.get("transaction_id");//微信支付订单号//支付完成时间String time_end&＃61;(String)packageParams.get("time_end");
// //回调一次后进行判断&＃xff0c;查询是否以及添加记录到数据库
// Record huidiao &＃61; Db.findById("c_order" , "order_number", transaction_id);
// if(huidiao !&＃61; null) {
// redirect("/");
// return;
// }//通知微信.异步确认成功.必写.不然会一直通知后台.八次之后就认为交易失败了. resXml &＃61; "" &＃43; "" &＃43; "" &＃43; " "; /*** 支付成功后的处理*/// 更新订单数据Long userId &＃61; Long.parseLong(attach);COrder c_order &＃61; new COrder();c_order.setOrderNumber(out_trade_no);List orderList &＃61; orderService.selectCOrderList(c_order);if(orderList.size()>&＃61;1) {c_order &＃61; orderList.get(0);c_order.setCreateTime(new Date());c_order.setOrderMoney(Long.parseLong(total_fee));c_order.setOrderFlag(1);c_order.setUserId(userId);orderService.updateCOrder(c_order);//查询会员月费Long monthMoney &＃61; orderService.selectMonthMoney();//计算充值多少个月的会员long month &＃61; Long.parseLong(total_fee)/monthMoney;//查询用户信息CUser cUser &＃61; new CUser();cUser.setUserId(userId);List userList &＃61; cUserService.selectUserInfoList(cUser);//根据用户vip剩余时间处理业务if(userList.size()<&＃61;0) {cUser &＃61; userList.get(0);Calendar userVip &＃61; Calendar.getInstance();userVip.setTime(cUser.getUserVip());Calendar now &＃61; Calendar.getInstance();userVip.setTime(new Date());if(userVip.after(now)) {//会员未过期}else {//会员已过期&＃xff0c;或者未充值过会员userVip &＃61; now;}userVip.add(Calendar.MONTH, (int)month);cUser.setUserVip(userVip.getTime());cUserService.updateCUser(cUser);return success();}else {System.out.println("查询不到用户");return error("查询不到用户");}}else {System.out.println("获取订单失败请与管理员联系");return error("获取订单失败请与管理员联系");}} else { System.out.println("支付失败,错误信息&＃xff1a;" &＃43; packageParams.get("err_code")); resXml &＃61; "" &＃43; "" &＃43; "" &＃43; " "; //TODO 支付失败要做什么 我这里先不写//------------------------------ //处理业务完毕 //------------------------------ BufferedOutputStream out &＃61; new BufferedOutputStream( getResponse().getOutputStream()); out.write(resXml.getBytes()); out.flush(); out.close();} } else{ System.out.println("通知签名验证失败");return error("通知签名验证失败");} }catch(IOException e) {e.printStackTrace();return error("IO处理失败&＃xff0c;请联系管理员&＃xff01;");} catch (JDOMException e) {e.printStackTrace();return error("JDOM处理失败&＃xff0c;请联系管理员&＃xff01;");}return error(); }/** * 解析xml,返回第一级元素键值对。如果第一级元素有子节点&＃xff0c;则此节点的值是子节点的xml数据。 * &＃64;param strxml * &＃64;return * &＃64;throws JDOMException * &＃64;throws IOException */ &＃64;SuppressWarnings({ "rawtypes", "unchecked" })public static Map doXMLParse(String strxml) throws JDOMException, IOException { strxml &＃61; strxml.replaceFirst("encoding&＃61;\".*\"", "encoding&＃61;\"UTF-8\""); if(null &＃61;&＃61; strxml || "".equals(strxml)) { return null; } Map m &＃61; new HashMap(); InputStream in &＃61; new ByteArrayInputStream(strxml.getBytes("UTF-8")); SAXBuilder builder &＃61; new SAXBuilder(); Document doc &＃61; builder.build(in); Element root &＃61; doc.getRootElement(); List list &＃61; root.getChildren(); Iterator it &＃61; list.iterator(); while(it.hasNext()) { Element e &＃61; (Element) it.next(); String k &＃61; e.getName(); String v &＃61; ""; List children &＃61; e.getChildren(); if(children.isEmpty()) { v &＃61; e.getTextNormalize(); } else { v &＃61; getChildrenText(children); } m.put(k, v); } //关闭流 in.close(); return m; } /** * 获取子结点的xml * &＃64;param children * &＃64;return String */ &＃64;SuppressWarnings("rawtypes")public static String getChildrenText(List children) { StringBuffer sb &＃61; new StringBuffer(); if(!children.isEmpty()) { Iterator it &＃61; children.iterator(); while(it.hasNext()) { Element e &＃61; (Element) it.next(); String name &＃61; e.getName(); String value &＃61; e.getTextNormalize(); List list &＃61; e.getChildren(); sb.append("<" &＃43; name &＃43; ">"); if(!list.isEmpty()) { sb.append(getChildrenText(list)); } sb.append(value); sb.append(""); } } return sb.toString(); } }

pom文件
可以参考下我之前的小程序的代码的pom文件&＃xff0c;小程序调起微信支付&＃xff0c;基本没做更改&＃xff0c;只是用的spring-boot&＃xff0c;本地打包加入外部jar包太麻烦就&＃xff0c;直接走pom引入了外部的包&＃xff0c;就多了下面一个包

org.jdomjdom1.1


用到的外部jar包和工具类&＃xff0c;jar包好像都没用到就导了pom文件就可以了&＃xff0c;添加pom文件后还是有问题&＃xff0c;可以把jar包导下&＃xff0c;maven项目导外部jar包&＃xff0c;打jar包会有问题&＃xff0c;需要自己去解决下&＃xff0c;我就是解决不了&＃xff0c;所以选择了直接找网上的pom文件直接导
https://download.csdn.net/download/qq_40488121/11704169

前端代码

&＃xff08;前端不是我写的&＃xff0c;我找前端要了份代码&＃xff0c;全不全就不晓得了&＃xff09;

uni.request({url:baseUrl&＃43;&＃39;/front/NOyStepOne&＃39;,// method: &＃39;GET&＃39;,data: { redisKey:this.rediskey,money:30},success: res &＃61;> {console.log(res.data.data)var str&＃61;res.data.data.packagevar arr&＃61;str.split("&＃61;")[1]//胜利ar as1 &＃61;arr.toUpperCase()//console.log(as1)var obj&＃61;{appid:res.data.data.appid, //id 应用idpartnerid:&＃39;1557620991&＃39;, //商户号 prepayid:arr, //预支付package:&＃39;Sign&＃61;WXPay&＃39;,noncestr:res.data.data.nonceStr,timestamp:res.data.data.timeStamp, //时间戳sign:res.data.data.sign}var orderInfo&＃61;JSON.stringify(obj)console.log("222")console.log(obj)var test&＃61;true;uni.requestPayment({provider: &＃39;wxpay&＃39;,orderInfo:orderInfo, //微信、支付宝订单数据success: function (res) {console.log(&＃39;success:&＃39; &＃43; JSON.stringify(res));},fail: function (err) {console.log(&＃39;fail:&＃39; &＃43; JSON.stringify(err));}});},fail: () &＃61;> {},complete: () &＃61;> {}});


踩的坑