JAVA微信小程序支付以及提现（企业向用户支付）

╰+攻爆jí腚メ 2023-02-13 04:59 31阅读 0赞

JAVA微信小程序支付以及提现（企业向用户支付）工具类等都给全了

## 支付 ##

微信官方文档  
[https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa\_sl\_api.php?chapter=7\_7&index=5][https_pay.weixin.qq.com_wiki_doc_api_wxa_wxa_sl_api.php_chapter_7_7_index_5]  
开发前准备好  
1.appId  
2.密钥(小程序配置界面)  
3.商户号  
4.api密钥(商家后台自己设置)

依赖pom.xml

<dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.58</version>
            </dependency>
      
            <dependency>
                <groupId>org.jdom</groupId>
                <artifactId>jdom</artifactId>
                <version>2.0.2</version>
            </dependency>
            <dependency>
                <groupId>org.apache.maven.surefire</groupId>
                <artifactId>maven-surefire-common</artifactId>
                <version>2.22.2</version>
            </dependency>
            <dependency>
                <groupId>org.codehaus.jettison</groupId>
                <artifactId>jettison</artifactId>
                <version>1.1</version>
            </dependency>
            <dependency>
                <groupId>net.sf.json-lib</groupId>
                <artifactId>json-lib</artifactId>
                <version>2.4</version>
                <classifier>jdk15</classifier>
            </dependency>
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>4.5.3</version>
            </dependency>
            <dependency>
                <groupId>org.jdom</groupId>
                <artifactId>jdom</artifactId>
                <version>1.1</version>
            </dependency>

控制层Controller

/** * 获取微信支付签名 * 作者wx1023732997 */
        @RequestMapping(value = "/payment", method = { RequestMethod.GET, RequestMethod.POST})
        @ResponseBody
        public SortedMap<Object, Object> WapSignSignatureAction(HttpServletRequest request, String code, String total_fee, String orderno,
                                                                String tName, HttpServletResponse response) throws Exception { 
            SortedMap<Object, Object> parameters = new TreeMap<Object, Object>();
            // code作为换取access_token的票据，每次用户授权带上的code将不一样，code只能使用一次，5分钟未被使用自动过期。
            // 通过code换取网页授权access_token
            String grant_type = "authorization_code";
            1、向微信服务器 使用登录凭证 code 获取 session_key 和 openid 
            //请求参数
            String params = "appid=" + APPID + "&secret=" + AppSecret + "&js_code=" + code + "&grant_type=" + grant_type;
            //发送请求
            String sr = HttpRequest.sendGet("https://api.weixin.qq.com/sns/jscode2session", params);
            //解析相应内容（转换成json对象）
            JSONObject json = JSONObject.parseObject(sr);
            //获取会话密钥（session_key）
            String session_key = json.get("session_key").toString();
            //用户的唯一标识（openid）
            String openid = (String) json.get("openid");
            String nonce_str = create_nonce_str();
            String timestamp = create_timestamp();
            // 获取prepayId
            try { 
                String result = getPrepayId(request, tName, orderno, total_fee, openid);
                Map<String, String> map = doXMLParse(result);
                // 重新生成签名
                parameters.put("appId", APPID);
                parameters.put("timeStamp", timestamp);
                parameters.put("nonceStr", nonce_str);
                parameters.put("package", "prepay_id=" + map.get("prepay_id"));
                parameters.put("signType", "MD5");
                String sign = createSign("UTF-8", parameters);
                parameters.put("prepay_id", "prepay_id=" + map.get("prepay_id"));
                parameters.put("paySign", sign);
            } catch (Exception e) { 
                e.printStackTrace();
            }
            return parameters;
        }

Service层

public class PaymentService { 
        public static final String APPID = "****";      //服务号APPID
        public static final String AppSecret = "****";  //服务号AppSecret
        public static final String MCH_ID = "*****";     //支付商户号
        public static final String API_KEY = "*******";    //API密钥
    
    
        /** * 发起https请求并获取结果 * * @param requestUrl 请求地址 * @param requestMethod 请求方式（GET、POST） * @param outputStr 提交的数据 * @return JSONObject(通过JSONObject.get ( key)的方式获取json对象的属性值) */
        public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) { 
            JSONObject jsonObject = null;
            StringBuffer buffer = new StringBuffer();
            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 SecureRandom());
                // 从上述SSLContext对象中得到SSLSocketFactory对象
                SSLSocketFactory ssf = sslContext.getSocketFactory();
    
                URL url = new URL(requestUrl);
                HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
                httpUrlConn.setSSLSocketFactory(ssf);
                httpUrlConn.setDoOutput(true);
                httpUrlConn.setDoInput(true);
                httpUrlConn.setUseCaches(false);
                // 设置请求方式（GET/POST）
                httpUrlConn.setRequestMethod(requestMethod);
    
                if ("GET".equalsIgnoreCase(requestMethod))
                    httpUrlConn.connect();
    
                // 当有数据需要提交时
                if (null != outputStr) { 
                    OutputStream outputStream = httpUrlConn.getOutputStream();
                    // 注意编码格式，防止中文乱码
                    outputStream.write(outputStr.getBytes("UTF-8"));
                    outputStream.close();
                }
    
                // 将返回的输入流转换成字符串
                InputStream inputStream = httpUrlConn.getInputStream();
                InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
                BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
    
                String str = null;
                while ((str = bufferedReader.readLine()) != null) { 
                    buffer.append(str);
                }
                bufferedReader.close();
                inputStreamReader.close();
                // 释放资源
                inputStream.close();
                inputStream = null;
                httpUrlConn.disconnect();
                jsonObject = JSONObject.fromObject(buffer.toString());
            } catch (ConnectException ce) { 
                System.err.println("Weixin server connection timed out.");
            } catch (Exception e) { 
                System.err.println("https request error");
            }
            return jsonObject;
        }
    
        public static String getPrepayId(HttpServletRequest request, String name, String orderno, String total_fee, String openid) throws Exception { 
            SortedMap<Object, Object> parameters = new TreeMap<Object, Object>();
            parameters.put("appid", APPID);
            parameters.put("mch_id", MCH_ID);
            parameters.put("nonce_str", CreateNoncestr());
            parameters.put("body", name);
            parameters.put("out_trade_no", orderno);// 订单号
            parameters.put("total_fee", total_fee);// 支付金额单位：分
            parameters.put("spbill_create_ip", getIp2(request));
            parameters.put("notify_url", "支付成功回调地址");
            parameters.put("trade_type", "JSAPI");
            parameters.put("openid", openid);//openid :需填写
            parameters.put("time_expire", "");// 交易结束时间,需要动态传入,格式为yyyyMMddHHmmss
            String sign = createSign("UTF-8", parameters);
            parameters.put("sign", sign);
            String requestXML = getRequestXml(parameters);
            //调用统一下单接口
            String result = httpsRequest("https://api.mch.weixin.qq.com/pay/unifiedorder", "POST", requestXML);
            System.out.println(result);
            return result;
        }
    
        public static String getPrepayno(HttpServletRequest request, String partner_trade_no, String amount, String openid,
                                         String check_name, String re_user_name, String desc) throws Exception { 
            SortedMap<Object, Object> parameters = new TreeMap<Object, Object>();
            parameters.put("mch_appid", APPID);
            parameters.put("mchid", MCH_ID);
            parameters.put("nonce_str", CreateNoncestr());
            parameters.put("partner_trade_no", partner_trade_no);// 订单号
            parameters.put("amount", amount);// 支付金额单位：分
            parameters.put("spbill_create_ip", getIp2(request));
            parameters.put("notify_url", "支付成功回调地址");
            parameters.put("trade_type", "JSAPI");
            parameters.put("openid", openid);//openid :需填写
            parameters.put("check_name", check_name);
            parameters.put("re_user_name", re_user_name);
            parameters.put("desc", desc);
            parameters.put("time_expire", "");// 交易结束时间,需要动态传入,格式为yyyyMMddHHmmss
            String sign = createSign("UTF-8", parameters);
            parameters.put("sign", sign);
            String requestXML = getRequestXml(parameters);
            //调用统一下单接口
            String result = httpsRequest("https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers", "POST", requestXML);
            System.out.println(result);
            return result;
        }
    
        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;
        }
    
        public static String getIp2(HttpServletRequest request) { 
            String ip = request.getHeader("X-Forwarded-For");
            if (!StringUtils.isEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) { 
                // 多次反向代理后会有多个ip值，第一个ip才是真实ip
                int index = ip.indexOf(",");
                if (index != -1) { 
                    return ip.substring(0, index);
                } else { 
                    return ip;
                }
            }
            ip = request.getHeader("X-Real-IP");
            if (!StringUtils.isEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) { 
                return ip;
            }
            return request.getRemoteAddr();
        }
    
        @SuppressWarnings("rawtypes")
        public static String createSign(String characterEncoding, SortedMap<Object, Object> parameters) { 
            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=" + API_KEY);
            String sign = MD5Encode(sb.toString(), characterEncoding).toUpperCase();
            return sign;
        }
    
        public static String MD5Encode(String origin, String charsetname) { 
            String resultString = null;
            try { 
                resultString = new String(origin);
                MessageDigest md = MessageDigest.getInstance("MD5");
                if (charsetname == null || "".equals(charsetname))
                    resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
                else
                    resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname)));
            } catch (Exception exception) { 
            }
            return resultString;
        }
    
        private static String byteArrayToHexString(byte b[]) { 
            StringBuffer resultSb = new StringBuffer();
            for (int i = 0; i < b.length; i++)
                resultSb.append(byteToHexString(b[i]));
            return resultSb.toString();
        }
    
        private static String byteToHexString(byte b) { 
            int n = b;
            if (n < 0)
                n += 256;
            int d1 = n / 16;
            int d2 = n % 16;
            return hexDigits[d1] + hexDigits[d2];
        }
    
        private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5",
                "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
    
        @SuppressWarnings("rawtypes")
        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();
        }
    
        /** * 发送https请求 * * @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 */
        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 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");
                // 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();
                return buffer.toString();
            } catch (ConnectException ce) { 
                System.out.println("连接超时");
            } catch (Exception e) { 
                System.out.println("请求异常");
            }
            return null;
        }
    
        public static String create_nonce_str() { 
            return UUID.randomUUID().toString();
        }
    
        public static String create_timestamp() { 
            return Long.toString(System.currentTimeMillis() / 1000);
        }
    
        /** * 解析xml */
        public static Map doXMLParse(String strxml) throws Exception { 
            strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");
    
            if (null == strxml || "".equals(strxml)) { 
                return null;
            }
    
            Map 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 = getChildrenText(children);
                }
    
                m.put(k, v);
            }
            // 关闭流
            in.close();
            return m;
        }
    
        /** * 获取子结点的xml */
        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(getChildrenText(list));
                    }
                    sb.append(value);
                    sb.append("</" + name + ">");
                }
            }
            return sb.toString();
        }
    
    
    }

X509TrustManager类

package cn.shifen.utils;
    
    import javax.net.ssl.X509TrustManager;
    import java.security.cert.CertificateException;
    import java.security.cert.X509Certificate;
    
    public class MyX509TrustManager  implements X509TrustManager { 
        public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException { 
        }
    
        public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException { 
        }
    
        public X509Certificate[] getAcceptedIssuers() { 
            return null;
        }
    }

HttpRequest类

package cn.shifen.utils;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.URL;
    import java.net.URLConnection;
    import java.util.List;
    import java.util.Map;
    
    public class HttpRequest { 
        /** * 向指定URL发送GET方法的请求 * * @param url 发送请求的URL * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。 * @return URL 所代表远程资源的响应结果 */
        public static String sendGet(String url, String param) { 
            String result = "";
            BufferedReader in = null;
            try { 
                String urlNameString = url + "?" + param;
                URL realUrl = new URL(urlNameString);
                // 打开和URL之间的连接
                URLConnection connection = realUrl.openConnection();
                // 设置通用的请求属性
                connection.setRequestProperty("accept", "*/*");
                connection.setRequestProperty("connection", "Keep-Alive");
                connection.setRequestProperty("user-agent",
                        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                // 建立实际的连接
                connection.connect();
                // 获取所有响应头字段
                Map<String, List<String>> map = connection.getHeaderFields();
                // 遍历所有的响应头字段
                for (String key : map.keySet()) { 
                    System.out.println(key + "--->" + map.get(key));
                }
                // 定义 BufferedReader输入流来读取URL的响应
                in = new BufferedReader(new InputStreamReader(
                        connection.getInputStream()));
                String line;
                while ((line = in.readLine()) != null) { 
                    result += line;
                }
            } catch (Exception e) { 
                System.out.println("发送GET请求出现异常！" + e);
                e.printStackTrace();
            }
            // 使用finally块来关闭输入流
            finally { 
                try { 
                    if (in != null) { 
                        in.close();
                    }
                } catch (Exception e2) { 
                    e2.printStackTrace();
                }
            }
            return result;
        }
    
        /** * 向指定 URL 发送POST方法的请求 * * @param url 发送请求的 URL * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。 * @return 所代表远程资源的响应结果 */
        public static String sendPost(String url, String param) { 
            PrintWriter out = null;
            BufferedReader in = null;
            String result = "";
            try { 
                URL realUrl = new URL(url);
                // 打开和URL之间的连接
                URLConnection conn = realUrl.openConnection();
                // 设置通用的请求属性
                conn.setRequestProperty("accept", "*/*");
                conn.setRequestProperty("connection", "Keep-Alive");
                conn.setRequestProperty("user-agent",
                        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                // 发送POST请求必须设置如下两行
                conn.setDoOutput(true);
                conn.setDoInput(true);
                // 获取URLConnection对象对应的输出流
                out = new PrintWriter(conn.getOutputStream());
                // 发送请求参数
                out.print(param);
                // flush输出流的缓冲
                out.flush();
                // 定义BufferedReader输入流来读取URL的响应
                in = new BufferedReader(
                        new InputStreamReader(conn.getInputStream()));
                String line;
                while ((line = in.readLine()) != null) { 
                    result += line;
                }
            } catch (Exception e) { 
                System.out.println("发送 POST 请求出现异常！" + e);
                e.printStackTrace();
            }
            //使用finally块来关闭输出流、输入流
            finally { 
                try { 
                    if (out != null) { 
                        out.close();
                    }
                    if (in != null) { 
                        in.close();
                    }
                } catch (IOException ex) { 
                    ex.printStackTrace();
                }
            }
            return result;
        }
    }

MD5Util类

package cn.shifen.utils;
    
    import java.security.MessageDigest;
    
    public class MD5Util { 
    
        private static String byteArrayToHexString(byte b[]) { 
            StringBuffer resultSb = new StringBuffer();
            for (int i = 0; i < b.length; i++)
                resultSb.append(byteToHexString(b[i]));
    
            return resultSb.toString();
        }
    
        private static String byteToHexString(byte b) { 
            int n = b;
            if (n < 0)
                n += 256;
            int d1 = n / 16;
            int d2 = n % 16;
            return hexDigits[d1] + hexDigits[d2];
        }
    
        public static String MD5Encode(String origin, String charsetname) { 
            String resultString = null;
            try { 
                resultString = new String(origin);
                MessageDigest md = MessageDigest.getInstance("MD5");
                if (charsetname == null || "".equals(charsetname))
                    resultString = byteArrayToHexString(md.digest(resultString
                            .getBytes()));
                else
                    resultString = byteArrayToHexString(md.digest(resultString
                            .getBytes(charsetname)));
            } catch (Exception exception) { 
            }
            return resultString;
        }
    
        private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5",
                "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
        
    
    }

## 提现 ##

官方文档地址  
[https://pay.weixin.qq.com/wiki/doc/api/tools/mch\_pay.php?chapter=14\_2][https_pay.weixin.qq.com_wiki_doc_api_tools_mch_pay.php_chapter_14_2]  
小程序提现需要下载证书  
下载证书指南  
[https://kf.qq.com/faq/161222NneAJf161222U7fARv.html][https_kf.qq.com_faq_161222NneAJf161222U7fARv.html]

控制层

//提现到零钱
        //https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?chapter=14_2
        @RequestMapping("/transfer")
        @ResponseBody
        public SortedMap<Object, Object> transfer(HttpServletRequest request, HttpServletResponse response) { 
    
            String openid = request.getParameter("openid");
            String amount = request.getParameter("amount");
            String tk_order_id =  CommonUtils.getId();//只要数字或字母的不重复32位即可，建议uuid去_
            System.out.println(" == >> " + tk_order_id);
            String partner_trade_no = tk_order_id; //商户订单号
            String check_name = "NO_CHECK"; //校验用户姓名选项 (NO_CHECK：不校验真实姓名 FORCE_CHECK：强校验真实姓名)
            String re_user_name = "xxx"; //收款用户姓名
            String desc = "xxx"; //企业付款备注
            SortedMap<Object, Object> parameters = new TreeMap<>();
            try { 
                String result = getPrepayno(request, partner_trade_no, amount, openid, check_name, re_user_name, desc);
                Map<String, String> map = doXMLParse(result);
                parameters.put("appId", APPID);
                parameters.put("package", "prepay_id=" + map.get("prepay_id"));
                parameters.put("signType", "MD5");
                parameters.put("prepay_id", "prepay_id=" + map.get("prepay_id"));
                String sign = createSign("UTF-8", parameters);
                parameters.put("paySign", sign);
            } catch (Exception e) { 
                e.printStackTrace();
            }
            return parameters;
        }

提现的service已经在支付的service里  
请求参数，多看官方文档  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNjE4NjY0_size_16_color_FFFFFF_t_70]  
搜索 闲益小区 小程序了解更多或者扫描太阳码  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNjE4NjY0_size_16_color_FFFFFF_t_70_pic_center]

[https_pay.weixin.qq.com_wiki_doc_api_wxa_wxa_sl_api.php_chapter_7_7_index_5]: https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_sl_api.php?chapter=7_7&index=5
[https_pay.weixin.qq.com_wiki_doc_api_tools_mch_pay.php_chapter_14_2]: https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?chapter=14_2
[https_kf.qq.com_faq_161222NneAJf161222U7fARv.html]: https://kf.qq.com/faq/161222NneAJf161222U7fARv.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNjE4NjY0_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200527160755147.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNjE4NjY0,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNjE4NjY0_size_16_color_FFFFFF_t_70_pic_center]: https://img-blog.csdnimg.cn/4e504ec178ce4d61831e3df602ce45ff.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNjE4NjY0,size_16,color_FFFFFF,t_70#pic_center