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微信二维码支付快速入门

發(fā)布時(shí)間：2025/3/20 编程问答 28 豆豆

生活随笔收集整理的這篇文章主要介紹了微信二维码支付快速入门小編覺得挺不錯(cuò)的,現(xiàn)在分享給大家,幫大家做個(gè)參考.

一、二維碼生成插件qrious

二、HttpClient

三.微信掃碼支付

1.申請步驟

2.開發(fā)文檔

四、入門Demo

1.工程搭建

2.myStudy-pay-interface

3.myStudy--pay-service

（1）引入pom依賴

（2）創(chuàng)建配置文件

（3）導(dǎo)入上文提到的HttpClient工具類

（4）創(chuàng)建WeixinPayService的實(shí)現(xiàn)類

4.myStudy--pay-web

（1）引入pom依賴

（2）創(chuàng)建配置文件

（3）創(chuàng)建返回結(jié)果集對象

（4）創(chuàng)建Controller層對象

（5）編寫前端

（6）具體流程

一、二維碼生成插件qrious

? qrious是一款基于HTML5 Canvas的純JS二維碼生成插件。通過qrious.js可以快速生成各種二維碼，你可以控制二維碼的尺寸顏色，還可以將生成的二維碼進(jìn)行Base64編碼。

qrious.js二維碼插件的可用配置參數(shù)如下：

參數(shù)類型默認(rèn)值描述

background	String	"white"	二維碼的背景顏色。
foreground	String	"black"	二維碼的前景顏色。
level	String	"L"	二維碼的誤差校正級別(L, M, Q, H)。
mime	String	"image/png"	二維碼輸出為圖片時(shí)的MIME類型。
size	Number	100	二維碼的尺寸，單位像素。
value	String	""	需要編碼為二維碼的值

二維碼容錯(cuò)級別介紹

L級（低） 7％的碼字可以被恢復(fù)。

M級（中）的碼字的15％可以被恢復(fù)。

Q級（四分）的碼字的25％可以被恢復(fù)。

H級（高）的碼字的30％可以被恢復(fù)。

下面的代碼即可生成一個(gè)簡單的二維碼：

<html> <head> <title>二維碼入門小demo</title> </head> <body> <img id="qrious"> <script src="qrious.min.js"></script> <script>var qr = new QRious({element:document.getElementById('qrious'),size:250, ? level:'H', ? value:'http://www.baidu.com'}); </script> </body> </html>

二、HttpClient

? HttpClient是Apache Jakarta Common下的子項(xiàng)目，用來提供高效的、最新的、功能豐富的支持HTTP協(xié)議的客戶端編程工具包，并且它支持HTTP協(xié)議最新的版本和建議。HttpClient已經(jīng)應(yīng)用在很多的項(xiàng)目中，比如Apache Jakarta上很著名的另外兩個(gè)開源項(xiàng)目Cactus和HTMLUnit都使用了HttpClient。

? HttpClient通俗的講就是模擬了瀏覽器的行為，如果我們需要在后端向某一地址提交數(shù)據(jù)獲取結(jié)果，就可以使用HttpClient.

? 我們這里這里為了簡化HttpClient的使用，提供了工具類HttpClient（對原生HttpClient進(jìn)行了封裝）

public class HttpClient {private String url;private Map<String, String> param;private int statusCode;private String content;private String xmlParam;private boolean isHttps;public boolean isHttps() {return isHttps;}public void setHttps(boolean isHttps) {this.isHttps = isHttps;}public String getXmlParam() {return xmlParam;}public void setXmlParam(String xmlParam) {this.xmlParam = xmlParam;}public HttpClient(String url, Map<String, String> param) {this.url = url;this.param = param;}public HttpClient(String url) {this.url = url;}public void setParameter(Map<String, String> map) {param = map;}public void addParameter(String key, String value) {if (param == null)param = new HashMap<String, String>();param.put(key, value);}public void post() throws ClientProtocolException, IOException {HttpPost http = new HttpPost(url);setEntity(http);execute(http);}public void put() throws ClientProtocolException, IOException {HttpPut http = new HttpPut(url);setEntity(http);execute(http);}public void get() throws ClientProtocolException, IOException {if (param != null) {StringBuilder url = new StringBuilder(this.url);boolean isFirst = true;for (String key : param.keySet()) {if (isFirst)url.append("?");elseurl.append("&");url.append(key).append("=").append(param.get(key));}this.url = url.toString();}HttpGet http = new HttpGet(url);execute(http);}/*** set http post,put param*/private void setEntity(HttpEntityEnclosingRequestBase http) {if (param != null) {List<NameValuePair> nvps = new LinkedList<NameValuePair>();for (String key : param.keySet())nvps.add(new BasicNameValuePair(key, param.get(key))); // 參數(shù)http.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); // 設(shè)置參數(shù)}if (xmlParam != null) {http.setEntity(new StringEntity(xmlParam, Consts.UTF_8));}}private void execute(HttpUriRequest http) throws ClientProtocolException,IOException {CloseableHttpClient httpClient = null;try {if (isHttps) {SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {// 信任所有public boolean isTrusted(X509Certificate[] chain,String authType)throws CertificateException {return true;}}).build();SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext);httpClient = HttpClients.custom().setSSLSocketFactory(sslsf).build();} else {httpClient = HttpClients.createDefault();}CloseableHttpResponse response = httpClient.execute(http);try {if (response != null) {if (response.getStatusLine() != null)statusCode = response.getStatusLine().getStatusCode();HttpEntity entity = response.getEntity();// 響應(yīng)內(nèi)容content = EntityUtils.toString(entity, Consts.UTF_8);}} finally {response.close();}} catch (Exception e) {e.printStackTrace();} finally {httpClient.close();}}public int getStatusCode() {return statusCode;}public String getContent() throws ParseException, IOException {return content;}

該工具類的使用步驟：

HttpClient client=new HttpClient(請求的url地址); client.setHttps(true);//是否是https協(xié)議 client.setXmlParam(xmlParam);//發(fā)送的xml數(shù)據(jù) client.post();//執(zhí)行post請求 String result = client.getContent(); //獲取結(jié)果

三.微信掃碼支付

? 微信掃碼支付是商戶系統(tǒng)按微信支付協(xié)議生成支付二維碼，用戶再用微信“掃一掃”完成支付的模式。該模式適用于PC網(wǎng)站支付、實(shí)體店單品或訂單支付、媒體廣告支付等場景。

1.申請步驟

https://pay.weixin.qq.com

2.開發(fā)文檔

在線微信支付開發(fā)文檔：

https://pay.weixin.qq.com/wiki/doc/api/index.html

appid：微信公眾賬號或開放平臺APP的唯一標(biāo)識

mch_id：商戶號 (配置文件中的partner)

partnerkey：商戶密鑰

sign:數(shù)字簽名, 根據(jù)微信官方提供的密鑰和一套算法生成的一個(gè)加密信息, 就是為了保證交易的安全性

微信支付SDK

微信支付提供了SDK, 下載后打開源碼，install到本地Maven倉庫即可使用。

SDK中有以下功能較為常用：

（1）獲取隨機(jī)字符串

WXPayUtil.generateNonceStr()

（2）Map轉(zhuǎn)換為XML字符串（自動添加簽名）

WXPayUtil.generateSignedXml(param, partnerkey)

（3）XML字符串轉(zhuǎn)換為Map

WXPayUtil.xmlToMap(result)

注意：

微信二維碼需要接受xml格式的數(shù)據(jù)，所以我們可以將數(shù)據(jù)封裝到Map中并用SDK的方法轉(zhuǎn)為xml字符串
在查詢訂單狀態(tài)時(shí)，返回的也是xml格式的數(shù)據(jù)，需要將xml字符串轉(zhuǎn)換為Map進(jìn)行處理

四、入門Demo

1.工程搭建

這里我們將微信二維碼服務(wù)搭建在dubbo服務(wù)中，并由web模塊通過zookeeper進(jìn)行調(diào)用

（1）建立支付服務(wù)接口模塊myStudy-pay-interface （jar）

（2）建立支付服務(wù)實(shí)現(xiàn)模塊myStudy--pay-service （war）

（3）建立支付調(diào)用模塊myStudy--pay-web （war）

2.myStudy-pay-interface

WeiXinPayService.java

/*** 微信支付接口** @author Administrator*/ public interface WeixinPayService { ?/*** 生成微信支付二維碼** @param out_trade_no 訂單號* @param total_fee ? 金額(分)* @return*/public Map createNative(String out_trade_no, String total_fee); ?/*** 查詢支付狀態(tài)* @param out_trade_no*/public Map queryPayStatus(String out_trade_no); }

3.myStudy--pay-service

（1）引入pom依賴

? ? <properties><junit.version>4.12</junit.version><spring.version>4.2.4.RELEASE</spring.version><servlet-api.version>2.5</servlet-api.version><dubbo.version>2.8.4</dubbo.version><zookeeper.version>3.4.7</zookeeper.version><zkclient.version>0.1</zkclient.version></properties> ?<dependencies><dependency><groupId>com.github.wxpay</groupId><artifactId>wxpay-sdk</artifactId><version>0.0.3</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.3</version></dependency> ?<dependency><groupId>com.yfy</groupId><artifactId>myStudy-pay-interface</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jms</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${spring.version}</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>dubbo</artifactId><version>${dubbo.version}</version></dependency><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId><version>${zookeeper.version}</version></dependency><dependency><groupId>com.github.sgroschupf</groupId><artifactId>zkclient</artifactId><version>${zkclient.version}</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>${junit.version}</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><scope>provided</scope><version>${servlet-api.version}</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.28</version></dependency><dependency><groupId>javassist</groupId><artifactId>javassist</artifactId><version>3.11.0.GA</version></dependency><dependency><groupId>commons-codec</groupId><artifactId>commons-codec</artifactId><version>1.10</version></dependency></dependencies> ? ?<build><plugins><plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.2</version><configuration><port>9000</port><path>/</path></configuration></plugin></plugins></build>

（2）創(chuàng)建配置文件

applicationContext-service.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context"xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsdhttp://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> ?<context:property-placeholder location="classpath*:config/weixinpay.properties" /> ?<dubbo:protocol name="dubbo" port="20880"></dubbo:protocol><dubbo:application name="myStudy-pay-service"/><dubbo:registry address="zookeeper://192.168.25.132:2181"/><dubbo:annotation package="com.yfy.service.impl"/><dubbo:provider timeout="50000"></dubbo:provider> ? </beans>

web.xml

wexinpay.properties

#appid：微信公眾賬號或開放平臺APP的唯一標(biāo)識 #partner：財(cái)付通平臺的商戶賬號 #partnerkey：財(cái)付通平臺的商戶密鑰 appid=wx8397f8696b538317 partner=1473426802 partnerkey=T6m9iK73b0kn9g5v426MKfHQH7X8rKwb

（3）導(dǎo)入上文提到的HttpClient工具類

此處代碼略

（4）創(chuàng)建WeixinPayService的實(shí)現(xiàn)類

package com.yfy.service.impl; ? import com.alibaba.dubbo.config.annotation.Service; import com.github.wxpay.sdk.WXPayUtil; import com.yfy.service.WeixinPayService; import com.yfy.util.HttpClient; import org.springframework.beans.factory.annotation.Value; ? import java.util.HashMap; import java.util.Map; ? @Service public class WeixinPayServiceImpl implements WeixinPayService { ?@Value("${appid}")private String appid; ?@Value("${partner}")private String partner; ?@Value("${partnerkey}")private String partnerkey; ?/*** 生成二維碼** @return*/public Map createNative(String out_trade_no, String total_fee) {//1.創(chuàng)建參數(shù)Map<String, String> param = new HashMap();//創(chuàng)建參數(shù)param.put("appid", appid);//公眾號param.put("mch_id", partner);//商戶號param.put("nonce_str", WXPayUtil.generateNonceStr());//隨機(jī)字符串param.put("body", "QQ會員充值");//商品描述param.put("out_trade_no", out_trade_no);//商戶訂單號param.put("total_fee", total_fee);//總金額（分）param.put("spbill_create_ip", "127.0.0.1");//IPparam.put("notify_url", "http://www.baidu.com");//回調(diào)地址(隨便寫)param.put("trade_type", "NATIVE");//交易類型try {//2.生成要發(fā)送的xmlString xmlParam = WXPayUtil.generateSignedXml(param, partnerkey);System.out.println(xmlParam);HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/unifiedorder");client.setHttps(true);client.setXmlParam(xmlParam);client.post();//3.獲得結(jié)果，此處我們只需要其中的幾個(gè)參數(shù)，自定義一個(gè)Map接收String result = client.getContent();Map<String, String> resultMap = WXPayUtil.xmlToMap(result);Map<String, String> map = new HashMap<>();map.put("code_url", resultMap.get("code_url"));//支付地址map.put("total_fee", total_fee);//總金額map.put("out_trade_no", out_trade_no);//訂單號return map;} catch (Exception e) {e.printStackTrace();return new HashMap<>();}} ?/*** 查詢狀態(tài)* @param out_trade_no* @return*/@Overridepublic Map queryPayStatus(String out_trade_no) {Map param = new HashMap();param.put("appid", appid);//公眾賬號IDparam.put("mch_id", partner);//商戶號param.put("out_trade_no", out_trade_no);//訂單號param.put("nonce_str", WXPayUtil.generateNonceStr());//隨機(jī)字符串String url = "https://api.mch.weixin.qq.com/pay/orderquery";try {String xmlParam = WXPayUtil.generateSignedXml(param, partnerkey);HttpClient client = new HttpClient(url);client.setHttps(true);client.setXmlParam(xmlParam);client.post();String result = client.getContent();Map<String, String> map = WXPayUtil.xmlToMap(result);System.out.println(map);return map;} catch (Exception e) {e.printStackTrace();return null;} ?} }

4.myStudy--pay-web

（1）引入pom依賴

<dependencies><dependency><groupId>com.yfy</groupId><artifactId>myStudy-pay-interface</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.2.4.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>4.2.4.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>4.2.4.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>4.2.4.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>4.2.4.RELEASE</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>dubbo</artifactId><version>2.8.4</version></dependency><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId><version>3.4.7</version></dependency><dependency><groupId>com.github.sgroschupf</groupId><artifactId>zkclient</artifactId><version>0.1</version></dependency> ?<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.28</version></dependency><dependency><groupId>javassist</groupId><artifactId>javassist</artifactId><version>3.11.0.GA</version></dependency><dependency><groupId>commons-codec</groupId><artifactId>commons-codec</artifactId><version>1.10</version></dependency> ?<dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version></dependency></dependencies> ?<build><plugins><plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.2</version><configuration><port>9100</port><path>/</path></configuration></plugin></plugins></build>

（2）創(chuàng)建配置文件

springmvc.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context"xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsdhttp://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"><mvc:annotation-driven><mvc:message-converters register-defaults="true"><bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> ?<property name="supportedMediaTypes" value="application/json"/><property name="features"><array><value>WriteMapNullValue</value><value>WriteDateUseDateFormat</value></array></property></bean></mvc:message-converters> ?</mvc:annotation-driven> ? ?<dubbo:application name="myStudy-pay-web" /><dubbo:registry address="zookeeper://192.168.25.132:2181"/><dubbo:annotation package="com.yfy.controller" /> ? </beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"version="2.5"> <filter><filter-name>CharacterEncodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>utf-8</param-value></init-param><init-param> ?<param-name>forceEncoding</param-name> ?<param-value>true</param-value> ?</init-param> ?</filter><filter-mapping><filter-name>CharacterEncodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping> <servlet><servlet-name>springmvc</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring/springmvc.xml</param-value></init-param></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping> ? </web-app>

（3）創(chuàng)建返回結(jié)果集對象

Result.java

public class Result implements Serializable{private boolean success;private String message; ?//...get()、set()方法 }

（4）創(chuàng)建Controller層對象

PayController.java

/*** 支付控制層** @author Administrator*/ @RestController @RequestMapping("/pay") public class PayController { ?@Referenceprivate WeixinPayService weixinPayService; ?/*** 生成二維碼** @return*/@RequestMapping("/createNative")public Map createNative() {//這里我們訂單號通過uuid生成，金額為1分UUID uuid = UUID.randomUUID();System.out.println(uuid);return weixinPayService.createNative(uuid.toString().substring(0, 18), "1");} ?/*** 查詢支付狀態(tài)** @param out_trade_no* @return*/@RequestMapping("/queryPayStatus")public Result queryPayStatus(String out_trade_no) {Result result = null;int x = 0;while (true) {//調(diào)用查詢接口Map<String, String> map = weixinPayService.queryPayStatus(out_trade_no);if (map == null) {//出錯(cuò)result = new Result(false, "支付出錯(cuò)");break;}if (map.get("trade_state").equals("SUCCESS")) {//如果成功result = new Result(true, "支付成功");break;}try {Thread.sleep(3000);//間隔三秒} catch (InterruptedException e) {e.printStackTrace();}//為了不讓循環(huán)無休止地運(yùn)行，我們定義一個(gè)循環(huán)變量//如果這個(gè)變量超過了這個(gè)值則退出循環(huán)，設(shè)置時(shí)間為5分鐘x++;if (x >= 100) {result = new Result(false, "二維碼超時(shí)");break;}}return result;} }

（5）編寫前端

這里我們使用angularjs+qrious插件，先導(dǎo)入這兩個(gè)插件

1）分層創(chuàng)建angularjs

base.js

var app = angular.module("myApp", []);

payService.js

app.service("payService", function ($http) { ?//生成支付的二維碼this.createNative=function () {return $http.get('pay/createNative.do');}//查詢驗(yàn)證碼的支付狀態(tài)this.queryPayStatus = function (out_trade_no) {return $http.get('pay/queryPayStatus.do?out_trade_no=' + out_trade_no);} ? })

payController.js

app.controller('payController', function ($scope, payService,$location) {//本地生成二維碼$scope.createNative = function () {payService.createNative().success(function (response) {$scope.money = (response.total_fee / 100).toFixed(2); //金額$scope.out_trade_no = response.out_trade_no;//訂單號//二維碼var qr = new QRious({element: document.getElementById('qrious'),size: 250,level: 'H',value: response.code_url}); ?//查詢訂單狀態(tài)queryPayStatus(response.out_trade_no);});} ?//查詢支付狀態(tài)queryPayStatus=function(out_trade_no){payService.queryPayStatus(out_trade_no).success(function(response){if(response.success){location.href="paySuccess.html#?money="+$scope.money;}else{if(response.message=='二維碼超時(shí)'){$scope.createNative();//重新生成二維碼}else{location.href="payFail.html";}}});} ?//獲取金額$scope.getMoney=function(){return $location.search()['money'];} });

2）展示頁面

pay.html

paySuccess.html

（6）具體流程

1)訪問 http://localhost:9100/pay.html

2)點(diǎn)擊提交訂單生成二維碼

3)掃描二維碼支付，頁面跳轉(zhuǎn)至 http://localhost:9100/paySuccess.html#?money=0.01（代碼中將支付金額設(shè)置為了1分錢）

注意：如果一直沒有掃描二維碼且沒有跳轉(zhuǎn)頁面，每隔5分鐘二維碼會重新生成一個(gè)，若關(guān)閉了頁面沒有支付，前端也就不會訪問支付訂單的交易詳情了

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