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微信app支付-java服务端

第一步: 微信的pom.xml依赖(这里主要是对xml的解析) [代码] <dependency> <groupId>org.jdom</groupId> <artifactId>jdom</artifactId> <version>1.1</version> </dependency> [代码] 第二步: 微信配置WxPayConfig.java(配置请到微信开发平台查找) [代码]/** * Created by NooYoo. * Created on 2019/7/16. * Description: 微信支付 */ public class WxPayConfig { /** * 微信开发平台应用ID */ public static final String APP_ID="your APP_ID"; /** * 应用对应的凭证 */ public static final String APP_SECRET="your APP_SECRET"; /** * 应用对应的密钥 key设置路径：微信商户平台(pay.weixin.qq.com)-->账户设置-->API安全-->密钥设置 */ public static final String APP_KEY="your APP_KEY"; /** * 微信支付商户号 */ public static final String PARTNER_ID=""; /** * 微信支付商户号 */ public static final String MCH_ID="your MCH_ID"; /** * 商户号对应的密钥 */ public static final String PARTNER_key=""; /** * 常量固定值 */ public static final String GRANT_TYPE="client_credential"; /** * 获取预支付id的接口url */ public static String GATEURL = "https://api.mch.weixin.qq.com/pay/unifiedorder"; /** * 微信服务器回调通知url */ public static String NOTIFY_URL = "your NOTIFY_URL"; } [代码] 支付效果：http://github.crmeb.net/u/LXT 第三步: 统一下单Wxpay.java (注意微信的0.01元 = 100哦) [代码]/** * Created by NooYoo. * Created on 2019/7/16. * Description: */ @Slf4j @RestController public class WxPay { /** * 统一下单接口 * * @param params * @return */ public String wxPrePay(Map<String, Object> params) { int price100 = new BigDecimal(String.valueOf(params.get("price"))).multiply(new BigDecimal(100)).intValue(); // if (price100 <= 0) { return null; } SortedMap<Object, Object> parameters = new TreeMap<Object, Object>(); parameters.put("appid", WxPayConfig.APP_ID); parameters.put("mch_id", WxPayConfig.MCH_ID); parameters.put("nonce_str", WxPayCommonUtils.CreateNoncestr()); parameters.put("body", params.get("body")); parameters.put("out_trade_no", params.get("serialNumber")); // 流水号 parameters.put("fee_type", "CNY"); parameters.put("total_fee", String.valueOf(price100)); // 订单金额 parameters.put("spbill_create_ip", params.get("spbillCreateIp")); parameters.put("notify_url", params.get("notifyURL")); //回调地址 parameters.put("trade_type", "APP"); parameters.put("attach", params.get("attach")); // 原始订单号(即你的业务系统订单号) //设置签名 String sign = WxPayCommonUtils.createSign("UTF-8", parameters, WxPayConfig.APP_KEY); parameters.put("sign", sign); System.out.println("parameters:" + parameters); //封装请求参数结束 String requestXML = WxPayCommonUtils.getRequestXml(parameters); System.out.println("requestXML:" + requestXML); //调用统一下单接口 String result = WxPayCommonUtils.httpsRequest( WxPayConfig.GATEURL, "POST", requestXML); SortedMap<Object, Object> parameterMap = new TreeMap<>(); try { System.out.println("result:" + result); // 统一下单接口返回正常的prepay_id，再按签名规范重新生成签名后，将数据传输给APP。参与签名的字段名为appId，partnerId，prepayId，nonceStr，timeStamp。注意：package的值格式为Sign=WXPay Map map = XMLUtils.doXMLParse(result); log.info("微信统一下单接口===>>>" + map); if (null != map && "FAIL".equals(map.get("return_code"))) { return null; } parameterMap.put("appid", WxPayConfig.APP_ID); // TODO 这里需要跟微信文档字段名一致,签名验证(统一下单是带下划线变量,app唤起支付参数不带下划线) parameterMap.put("partnerid", WxPayConfig.MCH_ID); parameterMap.put("prepayid", map.get("prepay_id") == null ? "" : map.get("prepay_id")); parameterMap.put("package", "Sign=WXPay"); parameterMap.put("noncestr", WxPayCommonUtils.CreateNoncestr()); //本来生成的时间戳是13位，但是ios必须是10位，所以截取了一下 parameterMap.put("timestamp", Long.parseLong(String.valueOf(System.currentTimeMillis()).substring(0, 10))); String sign2 = WxPayCommonUtils.createSign("UTF-8", parameterMap, WxPayConfig.APP_KEY); parameterMap.put("sign", sign2); } catch (JDOMException | IOException e) { e.printStackTrace(); } log.info("微信报文===>>>" + JSONObject.toJSON(parameterMap)); return JSONObject.toJSON(parameterMap).toString(); } } [代码] 第四步: 微信异步回调 [代码]/** * 微信支付异步回调 * * @param request * @param response * @throws IOException * @throws JDOMException */ @RequestMapping(value = "/pay/wxpay/notify", method = {RequestMethod.POST, RequestMethod.GET}) public void wxNotify(HttpServletRequest request, HttpServletResponse response) throws IOException, JDOMException { //读取参数 InputStream inputStream; StringBuffer sb = new StringBuffer(); inputStream = request.getInputStream(); String s; BufferedReader in = new BufferedReader(new InputStreamReader(inputStream, "UTF-8")); while ((s = in.readLine()) != null) { sb.append(s); } in.close(); inputStream.close(); Map<String, String> params = XMLUtils.doXMLParse(sb.toString()); //解析xml成map SortedMap<Object, Object> packageParams = new TreeMap<Object, Object>(); //过滤空设置 TreeMap Iterator it = params.keySet().iterator(); while (it.hasNext()) { String parameter = (String) it.next(); String parameterValue = params.get(parameter); String v = ""; if (null != parameterValue) { v = parameterValue.trim(); } packageParams.put(parameter, v); } log.info("===>>>>wxPay notify, 流水号: {}, 系统订单号: {}", packageParams.get("out_trade_no"), packageParams.get("attach")); String resXml; boolean flag = WxPayCommonUtils.isTenpaySign("UTF-8", packageParams, WxPayConfig.APP_KEY); //判断签名是否正确 if (flag) { if ("SUCCESS".equals(packageParams.get("result_code"))) { //////////支付成功, 执行自己的业务逻辑////////// // TODO 增加一些订单判断 } else { log.info("微信支付失败,错误信息：" + packageParams.get("err_code")); resXml = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[报文为空]]></return_msg>" + "</xml> "; } } else { resXml = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[通知签名验证失败]]></return_msg>" + "</xml> "; log.info("====>>>>微信通知签名验证失败"); } BufferedOutputStream out = new BufferedOutputStream( response.getOutputStream()); out.write(resXml.getBytes()); out.flush(); out.close(); } [代码] 相关工具类: [代码]/** * Created by NooYoo. * Created on 2019/7/16. * Description: 微信xml解析 */ public class XMLUtils { /** * 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 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 = XMLUtils.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(XMLUtils.getChildrenText(list)); } sb.append(value); sb.append("</" + name + ">"); } } return sb.toString(); } } [代码] [代码]/** * Created by Administrator. * Created on 2019/7/16. * Description: */ public class WxPayCommonUtils { private static final Logger logger = LoggerFactory.getLogger(WxPayCommonUtils.class); public static String CreateNoncestr(int length) { String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; String res = ""; for (int i = 0; i < length; i++) { Random rd = new Random(); res += chars.indexOf(rd.nextInt(chars.length() - 1)); } return res; } 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; } /** * 是否签名正确,规则是:按参数名称a-z排序,遇到空值的参数不参加签名。 * @return boolean */ public static boolean isTenpaySign(String characterEncoding, SortedMap<Object, Object> packageParams, String appKey) { StringBuffer sb = new StringBuffer(); Set es = packageParams.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(!"sign".equals(k) && null != v && !"".equals(v)) { sb.append(k + "=" + v + "&"); } } sb.append("key=").append(appKey); //算出摘要 String mysign = MD5Utils.MD5Encode(sb.toString(), characterEncoding).toLowerCase(); String tenpaySign = ((String)packageParams.get("sign")).toLowerCase(); //System.out.println(tenpaySign + " " + mysign); return tenpaySign.equals(mysign); } /** * @Description：sign签名 * @param characterEncoding 编码格式 * @param parameters 请求参数 * @return */ public static String createSign(String characterEncoding,SortedMap<Object,Object> parameters, String appKey){ 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=").append(appKey); String sign = MD5Utils.MD5Encode(sb.toString(), characterEncoding).toUpperCase(); return sign; } /** * @Description：将请求参数转换为xml格式的string * @param parameters 请求参数 * @return */ 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)) { sb.append("<"+k+">"+"<![CDATA["+v+"]]></"+k+">"); }else { sb.append("<"+k+">"+v+"</"+k+">"); } } sb.append("</xml>"); return sb.toString(); } /** * @Description：返回给微信的参数 * @param return_code 返回编码 * @param return_msg 返回信息 * @return */ 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>"; } /** * 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 MyX509TrustManagerUtil() }; 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"); // 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) { logger.error("连接超时：{}", ce); } catch (Exception e) { logger.error("https请求异常：{}", e); } return null; } /** * 发送https请求 * * @param requestUrl 请求地址 * @param requestMethod 请求方式（GET、POST） * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值) */ public static JSONObject httpsRequest(String requestUrl, String requestMethod) { JSONObject jsonObject = null; 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 MyX509TrustManagerUtil() }; 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); conn.setConnectTimeout(3000); // 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 // 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(); jsonObject = JSONObject.parseObject(buffer.toString()); } catch (ConnectException ce) { logger.error("连接超时：{}", ce); } catch (Exception e) { logger.error("https请求异常：{}", e); } return jsonObject; } public static String urlEncodeUTF8(String source){ String result = source; try { result = java.net.URLEncoder.encode(source,"utf-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return result; } } [代码] [代码]/** * Created by Administrator. * Created on 2019/7/16. * Description: */ public class MD5Utils { 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" }; } [代码] [代码]/** * Created by NooYoo. * Created on 2019/7/16. * Description: */ public class WxPayCommonUtils { private static final Logger logger = LoggerFactory.getLogger(WxPayCommonUtils.class); public static String CreateNoncestr(int length) { String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; String res = ""; for (int i = 0; i < length; i++) { Random rd = new Random(); res += chars.indexOf(rd.nextInt(chars.length() - 1)); } return res; } 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; } /** * 是否签名正确,规则是:按参数名称a-z排序,遇到空值的参数不参加签名。 * @return boolean */ public static boolean isTenpaySign(String characterEncoding, SortedMap<Object, Object> packageParams, String appKey) { StringBuffer sb = new StringBuffer(); Set es = packageParams.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(!"sign".equals(k) && null != v && !"".equals(v)) { sb.append(k + "=" + v + "&"); } } sb.append("key=").append(appKey); //算出摘要 String mysign = MD5Utils.MD5Encode(sb.toString(), characterEncoding).toLowerCase(); String tenpaySign = ((String)packageParams.get("sign")).toLowerCase(); //System.out.println(tenpaySign + " " + mysign); return tenpaySign.equals(mysign); } /** * @Description：sign签名 * @param characterEncoding 编码格式 * @param parameters 请求参数 * @return */ public static String createSign(String characterEncoding,SortedMap<Object,Object> parameters, String appKey){ 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=").append(appKey); String sign = MD5Utils.MD5Encode(sb.toString(), characterEncoding).toUpperCase(); return sign; } /** * @Description：将请求参数转换为xml格式的string * @param parameters 请求参数 * @return */ 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)) { sb.append("<"+k+">"+"<![CDATA["+v+"]]></"+k+">"); }else { sb.append("<"+k+">"+v+"</"+k+">"); } } sb.append("</xml>"); return sb.toString(); } /** * @Description：返回给微信的参数 * @param return_code 返回编码 * @param return_msg 返回信息 * @return */ 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>"; } /** * 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 MyX509TrustManagerUtil() }; 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"); // 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) { logger.error("连接超时：{}", ce); } catch (Exception e) { logger.error("https请求异常：{}", e); } return null; } /** * 发送https请求 * * @param requestUrl 请求地址 * @param requestMethod 请求方式（GET、POST） * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值) */ public static JSONObject httpsRequest(String requestUrl, String requestMethod) { JSONObject jsonObject = null; 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 MyX509TrustManagerUtil() }; 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); conn.setConnectTimeout(3000); // 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 // 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(); jsonObject = JSONObject.parseObject(buffer.toString()); } catch (ConnectException ce) { logger.error("连接超时：{}", ce); } catch (Exception e) { logger.error("https请求异常：{}", e); } return jsonObject; } public static String urlEncodeUTF8(String source){ String result = source; try { result = java.net.URLEncoder.encode(source,"utf-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return result; } } [代码] 代码中使用: [代码]Map<String, Object> wxpayMap = new HashMap<>(); wxpayMap.put("attach", "你自己的订单号"); wxpayMap.put("spbillCreateIp", request.getRemoteAddr()); wxpayMap.put("body", "xx费用"); wxpayMap.put("serialNumber", "你的流水号"); wxpayMap.put("orderId", "你自己的订单号"); wxpayMap.put("price", "订单金额"); // orderTrade.getTotalFee() wxpayMap.put("notifyURL", WxPayConfig.NOTIFY_URL); paymentStr = wxPay.wxPrePay(wxpayMap); [代码]

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