Spring Boot 微信小程序接入微信支付功能
作者:令人作呕的溏心蛋
本文详细介绍了使用SpringBoot框架接入微信支付的全流程,包括导入依赖、配置微信公众号信息、设置配置文件、编写支付相关实体类和API地址常量、实现支付服务以及Controller层的编写,感兴趣的朋友跟随小编一起看看吧
1、导入相关依赖 pom.yml
<!-- 微信支付 SDK --> <dependency> <groupId>com.github.wxpay</groupId> <artifactId>wxpay-sdk</artifactId> <version>0.0.3</version> </dependency>
2、文件配置微信公众号的基础信息 application.yml
# 微信支付配置 notifyUrl:微信支付异步回调地址 pay: appId: #小程序应用id(小程序平台mp.weixin.qq.com) apiKey: #商户私钥key(微信商户平台(pay.weixin.qq.com)-->账户设置-->API安全-->密钥设置) mchId: #商户号(微信商户平台(pay.weixin.qq.com)-->产品中心-->开发配置-->商户号) appSecret: #小程序密钥(小程序平台mp.weixin.qq.com) notifyUrl: #支付回调地址(服务器地址https://xxxxxx)
3、设置配置文件 WxPayConfig.java
package com.ckm.ball.config.wxpay; import lombok.Data; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Configuration; import org.springframework.stereotype.Component; /** * 微信支付配置 * @author lf * @date 2023/8/30 */ @Data @Component @Configuration @ConfigurationProperties(prefix = "pay") public class WxPayConfig { /** * 微信公众号appid */ private String appId; /** * 公众号设置的API v2密钥 */ private String apiKey; /** * 微信商户平台 商户id */ private String mchId; /** *小程序密钥 */ private String appSecret; /** * 小程序支付异步回调地址 */ private String notifyUrl; }
4、微信支付预下单实体类 WeChatPay.java
package com.ckm.ball.config.wxpay; import lombok.Data; import lombok.experimental.Accessors; /** * 微信支付预下单实体类 */ @Data @Accessors(chain = true) public class WeChatPay { /** * 返回状态码 此字段是通信标识,非交易标识,交易是否成功需要查看result_code来判断 */ public String return_code; /** * 返回信息 当return_code为FAIL时返回信息为错误原因 ,例如 签名失败 参数格式校验错误 */ private String return_msg; /** * 公众账号ID 调用接口提交的公众账号ID */ private String appid; /** * 商户号 调用接口提交的商户号 */ private String mch_id; /** * api密钥 详见:https://pay.weixin.qq.com/index.php/extend/employee */ private String api_key; /** * 设备号 自定义参数,可以为请求支付的终端设备号等 */ private String device_info; /** * 随机字符串 5K8264ILTKCH16CQ2502SI8ZNMTM67VS 微信返回的随机字符串 */ private String nonce_str; /** * 签名 微信返回的签名值,详见签名算法:https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=4_3 */ private String sign; /** * 签名类型 */ private String sign_type; /** * 业务结果 SUCCESS SUCCESS/FAIL */ private String result_code; /** * 错误代码 当result_code为FAIL时返回错误代码,详细参见下文错误列表 */ private String err_code; /** * 错误代码描述 当result_code为FAIL时返回错误描述,详细参见下文错误列表 */ private String err_code_des; /** * 交易类型 JSAPI JSAPI -JSAPI支付 NATIVE -Native支付 APP -APP支付 说明详见;https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=4_2 */ private String trade_type; /** * 预支付交易会话标识 微信生成的预支付会话标识,用于后续接口调用中使用,该值有效期为2小时 */ private String prepay_id; /** * 二维码链接 weixin://wxpay/bizpayurl/up?pr=NwY5Mz9&groupid=00 trade_type=NATIVE时有返回,此url用于生成支付二维码,然后提供给用户进行扫码支付。注意:code_url的值并非固定,使用时按照URL格式转成二维码即可 */ private String code_url; /** * 商品描述 商品简单描述,该字段请按照规范传递,具体请见 https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=4_2 */ private String body; /** * 商家订单号 商户系统内部订单号,要求32个字符内,只能是数字、大小写字母_-|* 且在同一个商户号下唯一。详见商户订单号 https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=4_2 */ private String out_trade_no; /** * 标价金额 订单总金额,单位为分,详见支付金额 https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=4_2 */ private String total_fee; /** * 终端IP 支持IPV4和IPV6两种格式的IP地址。用户的客户端IP */ private String spbill_create_ip; /** * 通知地址 异步接收微信支付结果通知的回调地址,通知url必须为外网可访问的url,不能携带参数。公网域名必须为https,如果是走专线接入,使用专线NAT IP或者私有回调域名可使用http */ private String notify_url; /** * 子商户号 sub_mch_id 非必填(商户不需要传入,服务商模式才需要传入) 微信支付分配的子商户号 */ private String sub_mch_id; /** * 附加数据,在查询API和支付通知中原样返回,该字段主要用于商户携带订单的自定义数据 */ private String attach; /** * 商户系统内部的退款单号,商户系统内部唯一,只能是数字、大小写字母_-|*@ ,同一退款单号多次请求只退一笔。 */ private String out_refund_no; /** * 退款总金额,单位为分,只能为整数,可部分退款。详见支付金额 https://pay.weixin.qq.com/wiki/doc/api/native_sl.php?chapter=4_2 */ private String refund_fee; /** * 退款原因 若商户传入,会在下发给用户的退款消息中体现退款原因 注意:若订单退款金额≤1元,且属于部分退款,则不会在退款消息中体现退款原因 */ private String refund_desc; /** * 交易结束时间 订单失效时间,格式为yyyyMMddHHmmss,如2009年12月27日9点10分10秒表示为20091227091010。其他详见时间规则 注意:最短失效时间间隔必须大于5分钟 */ private String time_expire; /** * 用户标识 trade_type=JSAPI,此参数必传,用户在主商户appid下的唯一标识。openid和sub_openid可以选传其中之一,如果选择传sub_openid,则必须传sub_appid。下单前需要调用【网页授权获取用户信息: https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/Wechat_webpage_authorization.html 】接口获取到用户的Openid。 */ private String openid; /** * 时间戳 */ private String time_stamp; /** * 会员类型 */ private String memberShipType; }
5、微信支付API地址 WeChatPayUrlConstants.java
package com.ckm.ball.config.wxpay; /** * 微信支付API地址 * @author lf * @date 2023/8/30 */ public class WeChatPayUrlConstants { /** * 统一下单预下单接口url */ public static final String Uifiedorder = "https://api.mch.weixin.qq.com/pay/unifiedorder"; /** * 订单状态查询接口URL */ public static final String Orderquery = "https://api.mch.weixin.qq.com/pay/orderquery"; /** * 订单申请退款 */ public static final String Refund = "https://api.mch.weixin.qq.com/secapi/pay/refund"; /** * 付款码 支付 */ public static final String MicroPay = "https://api.mch.weixin.qq.com/pay/micropay"; /** * 微信网页授权 获取“code”请求地址 */ public static final String GainCodeUrl = "https://open.weixin.qq.com/connect/oauth2/authorize"; /** * 微信网页授权 获取“code” 回调地址 */ public static final String GainCodeRedirect_uri = "http://i5jmxe.natappfree.cc/boss/WeChatPayMobile/SkipPage.html"; }
6、预下单成功之后返回结果 OrderReturnInfo.java
package com.ckm.ball.config.wxpay; import lombok.Data; @Data public class OrderReturnInfo { private String return_code; private String return_msg; private String result_code; private String appid; private String mch_id; private String nonce_str; private String sign; private String prepay_id; private String trade_type; }
7、查询订单返回的实体类 QueryReturnInfo.java
package com.ckm.ball.config.wxpay; import lombok.Data; /** * 查询订单返回实体类 * @author lf * @date 2023/9/1 */ @Data public class QueryReturnInfo { private String return_code; private String return_msg; private String result_code; private String err_code; private String err_code_des; private String appid; private String mch_id; private String nonce_str; private String sign; private String prepay_id; private String trade_type; private String device_info; private String openid; private String is_subscribe; private String trade_state; private String bank_type; private int total_fee; private int settlement_total_fee; private String fee_type; private int cash_fee; private String cash_fee_type; private int coupon_fee; private int coupon_count; private String coupon_type_$n; private String coupon_id_$n; private String transaction_id; private String out_trade_no; private String time_end; private String trade_state_desc; }
8、签名实体类 SignInfo.java
package com.ckm.ball.config.wxpay; import com.thoughtworks.xstream.annotations.XStreamAlias; import lombok.Data; /** * 签名实体类 * @author lf * @date 2023/9/1 */ @Data public class SignInfo { private String appId;//小程序ID private String timeStamp;//时间戳 private String nonceStr;//随机串 @XStreamAlias("package") private String repay_id; private String signType;//签名方式 public String getAppId() { return appId; } public void setAppId(String appId) { this.appId = appId; } public String getTimeStamp() { return timeStamp; } public void setTimeStamp(String timeStamp) { this.timeStamp = timeStamp; } public String getNonceStr() { return nonceStr; } public void setNonceStr(String nonceStr) { this.nonceStr = nonceStr; } public String getRepay_id() { return repay_id; } public void setRepay_id(String repay_id) { this.repay_id = repay_id; } public String getSignType() { return signType; } public void setSignType(String signType) { this.signType = signType; } }
9、Http工具类 HttpRequest.java
package com.ckm.ball.utils; import com.thoughtworks.xstream.XStream; import com.thoughtworks.xstream.io.xml.DomDriver; import com.thoughtworks.xstream.io.xml.XmlFriendlyNameCoder; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; import javax.net.ssl.X509TrustManager; import java.io.IOException; import java.security.KeyManagementException; import java.security.KeyStoreException; import java.security.NoSuchAlgorithmException; import java.security.UnrecoverableKeyException; import java.security.cert.CertificateException; /** * Http工具类 * @author lf * @date 2023/9/1 */ public class HttpRequest { //连接超时时间,默认10秒 private static final int socketTimeout = 10000; //传输超时时间,默认30秒 private static final int connectTimeout = 30000; /** * post请求 * * @throws IOException * @throws ClientProtocolException * @throws NoSuchAlgorithmException * @throws KeyStoreException * @throws KeyManagementException * @throws UnrecoverableKeyException */ public static String sendPost(String url, Object xmlObj) throws ClientProtocolException, IOException, UnrecoverableKeyException, KeyManagementException, KeyStoreException, NoSuchAlgorithmException { HttpPost httpPost = new HttpPost(url); //解决XStream对出现双下划线的bug XStream xStreamForRequestPostData = new XStream(new DomDriver("UTF-8", new XmlFriendlyNameCoder("-_", "_"))); xStreamForRequestPostData.alias("xml", xmlObj.getClass()); //将要提交给API的数据对象转换成XML格式数据Post给API String postDataXML = xStreamForRequestPostData.toXML(xmlObj); //得指明使用UTF-8编码,否则到API服务器XML的中文不能被成功识别 StringEntity postEntity = new StringEntity(postDataXML, "UTF-8"); httpPost.addHeader("Content-Type", "text/xml"); httpPost.setEntity(postEntity); //设置请求器的配置 RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(socketTimeout).setConnectTimeout(connectTimeout).build(); httpPost.setConfig(requestConfig); HttpClient httpClient = HttpClients.createDefault(); HttpResponse response = httpClient.execute(httpPost); HttpEntity entity = response.getEntity(); String result = EntityUtils.toString(entity, "UTF-8"); return result; } /** * 自定义证书管理器,信任所有证书 * * @author pc */ public static class MyX509TrustManager implements X509TrustManager { @Override public void checkClientTrusted( java.security.cert.X509Certificate[] arg0, String arg1) throws CertificateException { } @Override public void checkServerTrusted( java.security.cert.X509Certificate[] arg0, String arg1) throws CertificateException { } @Override public java.security.cert.X509Certificate[] getAcceptedIssuers() { return null; } } }
10、微信签名 SignUtils.java
package com.ckm.ball.config.wxpay; import com.ckm.ball.utils.MD5; import com.thoughtworks.xstream.annotations.XStreamAlias; import java.lang.reflect.Field; import java.util.ArrayList; import java.util.Arrays; import java.util.Map; /** * 微信签名 * @author lf * @date 2023/9/1 */ public class SignUtils { /** * 签名算法 * * @param o 要参与签名的数据对象 * @return 签名 * @throws IllegalAccessException */ public static String getSign(Object o,String key) throws IllegalAccessException { ArrayList<String> list = new ArrayList<String>(); Class cls = o.getClass(); Field[] fields = cls.getDeclaredFields(); for (Field f : fields) { f.setAccessible(true); if (f.get(o) != null && f.get(o) != "") { String name = f.getName(); XStreamAlias anno = f.getAnnotation(XStreamAlias.class); if (anno != null) { name = anno.value(); } list.add(name + "=" + f.get(o) + "&"); } } 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 += "key=" + key; System.out.println("签名数据:" + result); result = MD5.MD5Encode(result).toUpperCase(); return result; } public static String getSign(Map<String, Object> map,String key) { ArrayList<String> list = new ArrayList<String>(); for (Map.Entry<String, Object> entry : map.entrySet()) { if (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 += "key=" + key; //Util.log("Sign Before MD5:" + result); result = MD5.MD5Encode(result).toUpperCase(); //Util.log("Sign Result:" + result); return result; } }
11、MD5加密工具类 MD5.java
package com.ckm.ball.utils; import java.security.MessageDigest; /** * MD5加密工具类 * @author lf * @date 2023/9/1 */ public class MD5 { private final static String[] hexDigits = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"}; /** * 转换字节数组为16进制字串 * * @param b 字节数组 * @return 16进制字串 */ public static String byteArrayToHexString(byte[] b) { StringBuilder resultSb = new StringBuilder(); for (byte aB : b) { resultSb.append(byteToHexString(aB)); } return resultSb.toString(); } /** * 转换byte到16进制 * * @param b 要转换的byte * @return 16进制格式 */ private static String byteToHexString(byte b) { int n = b; if (n < 0) { n = 256 + n; } int d1 = n / 16; int d2 = n % 16; return hexDigits[d1] + hexDigits[d2]; } /** * MD5编码 * * @param origin 原始字符串 * @return 经过MD5加密之后的结果 */ public static String MD5Encode(String origin) { String resultString = null; try { resultString = origin; MessageDigest md = MessageDigest.getInstance("MD5"); resultString = byteArrayToHexString(md.digest(resultString.getBytes())); } catch (Exception e) { e.printStackTrace(); } return resultString; } }
12、微信支付service接口 WxPayInfoService.java
package com.ckm.ball.config.wxpay; import java.util.Map; /** * 微信小程序支付-业务接口层 * @author lf * @date 2023/8/31 */ public interface WxPayInfoService { /** * 插入订单记录 */ Map<String, Object> insertPayRecord(); /** * 查询订单 * @param out_trade_no 订单号 * @return 返回结果 */ Map<String, Object> orderQuery(String out_trade_no); }
13、微信支付service接口实现类 WxPayInfoServiceImpl.java
package com.ckm.ball.config.wxpay; import cn.hutool.core.util.ObjectUtil; import com.github.wxpay.sdk.WXPayConstants; import com.github.wxpay.sdk.WXPayUtil; import com.ckm.ball.utils.HttpRequest; import com.thoughtworks.xstream.XStream; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import javax.annotation.Resource; import java.math.BigDecimal; import java.text.DecimalFormat; import java.util.*; /** * 微信小程序支付-业务接口实现层 * @author lf * @date 2023/8/31 */ @Service @Slf4j public class WxPayInfoServiceImpl implements WxPayInfoService { @Resource private WxPayConfig payProperties; private static final DecimalFormat df = new DecimalFormat("#"); /** * 插入订单记录 * @param payParameterVO 用户ID 会员套餐ID * @return 返回结果 */ @Override @Transactional public Map<String, Object> insertPayRecord() { //接收返回的参数 Map<String, Object> map = new HashMap<>(); String title = "ckm"; //金额 * 100 以分为单位 BigDecimal fee = BigDecimal.valueOf(1); BigDecimal RMB = new BigDecimal(100); BigDecimal totalFee = fee.multiply(RMB); try { WeChatPay weChatPay = new WeChatPay(); weChatPay.setAppid(payProperties.getAppId()); weChatPay.setMch_id(payProperties.getMchId()); weChatPay.setNonce_str(getRandomStringByLength(32)); weChatPay.setBody(title); weChatPay.setOut_trade_no(getRandomStringByLength(32)); weChatPay.setTotal_fee( df.format(Double.parseDouble(String.valueOf(totalFee)))); weChatPay.setSpbill_create_ip("58.213.48.98"); weChatPay.setNotify_url(payProperties.getNotifyUrl()); weChatPay.setTrade_type("JSAPI"); //这里直接使用当前用户的openid weChatPay.setOpenid("o_qV97S-4HaPN51ZbQe4qML625j4"); // weChatPay.setSign_type("MD5"); //生成签名 String sign = SignUtils.getSign(weChatPay,payProperties.getApiKey()); System.out.println(sign); weChatPay.setSign(sign); String result = HttpRequest.sendPost(WeChatPayUrlConstants.Uifiedorder, weChatPay); System.out.println(result); //将返回结果从xml格式转换为map格式 Map<String, String> wxResultMap = WXPayUtil.xmlToMap(result); if (ObjectUtil.isNotEmpty(wxResultMap.get("return_code")) && wxResultMap.get("return_code").equals("SUCCESS")){ if (wxResultMap.get("result_code").equals("FAIL")){ map.put("msg", "统一下单失败"); map.put("status",500); map.put("data", wxResultMap.get("err_code_des")); return map; } } XStream xStream = new XStream(); // 允许特定类的反序列化 xStream.allowTypes(new Class[] { OrderReturnInfo.class }); // 设置别名 xStream.alias("xml", OrderReturnInfo.class); // 从XML反序列化 OrderReturnInfo returnInfo = (OrderReturnInfo) xStream.fromXML(result); // 二次签名 if ("SUCCESS".equals(returnInfo.getReturn_code()) && returnInfo.getReturn_code().equals(returnInfo.getResult_code())) { SignInfo signInfo = new SignInfo(); signInfo.setAppId(payProperties.getAppId()); long time = System.currentTimeMillis() / 1000; signInfo.setTimeStamp(String.valueOf(time)); signInfo.setNonceStr(WXPayUtil.generateNonceStr()); signInfo.setRepay_id("prepay_id=" + returnInfo.getPrepay_id()); signInfo.setSignType("MD5"); //生成签名 String sign1 = SignUtils.getSign(signInfo,payProperties.getApiKey()); Map<String, String> payInfo = new HashMap<>(); payInfo.put("timeStamp", signInfo.getTimeStamp()); payInfo.put("nonceStr", signInfo.getNonceStr()); payInfo.put("package", signInfo.getRepay_id()); payInfo.put("signType", signInfo.getSignType()); payInfo.put("paySign", sign1); map.put("status", 200); map.put("msg", "统一下单成功!"); map.put("data", payInfo); //预下单成功,处理业务逻辑 //****************************// // 业务逻辑结束 回传给小程序端唤起支付 return map; } map.put("status", 500); map.put("msg", "统一下单失败!"); map.put("data", null); return map; } catch (Exception e) { e.printStackTrace(); } return null; } /** * 查询订单 * @param out_trade_no 订单号 * @return 返回结果 */ @Override public Map<String, Object> orderQuery(String out_trade_no){ Map<String, Object> map = new HashMap<>(); try { WeChatPay weChatPay = new WeChatPay(); weChatPay.setAppid(payProperties.getAppId()); weChatPay.setMch_id(payProperties.getMchId()); weChatPay.setNonce_str(WXPayUtil.generateNonceStr()); weChatPay.setOut_trade_no(out_trade_no); //order.setSign_type("MD5"); //生成签名 String sign = SignUtils.getSign(weChatPay,payProperties.getApiKey()); weChatPay.setSign(sign); String result = HttpRequest.sendPost(WXPayConstants.ORDERQUERY_URL, weChatPay); System.out.println(result); XStream xStream = new XStream(); xStream.alias("xml", QueryReturnInfo.class); QueryReturnInfo returnInfo = (QueryReturnInfo) xStream.fromXML(result); map.put("status", 500); map.put("msg", "统一下单失败!"); map.put("data", returnInfo); return map; } catch (Exception e) { e.printStackTrace(); } return null; } /** * 获取一定长度的随机字符串 * * @param length 指定字符串长度 * @return 一定长度的字符串 */ public static String getRandomStringByLength(int length) { String base = "abcdefghijklmnopqrstuvwxyz0123456789"; Random random = new Random(); StringBuffer sb = new StringBuffer(); for (int i = 0; i < length; i++) { int number = random.nextInt(base.length()); sb.append(base.charAt(number)); } return sb.toString(); } }
14、微信支付Controller层 WeChatPayController.java
package com.ckm.ball.config.wxpay; import com.ckm.ball.utils.StreamUtils; import com.github.wxpay.sdk.WXPayUtil; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import org.springframework.web.bind.annotation.*; import javax.annotation.Resource; import javax.servlet.ServletInputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.util.HashMap; import java.util.Map; @RestController @RequestMapping("/ballFishing/wechat") @Api(value = "微信支付接口") @CrossOrigin // @CrossOrigin注解 解决uniapp跨域访问后端问题。 public class WeChatPayController { @Resource private WxPayInfoService wxPayInfoService; /** * 小程序支付下单接口 * @return 返回结果 */ @ApiOperation("小程序支付功能") @PostMapping("/pay") public Map<String,Object> wxPay(){ return wxPayInfoService.insertPayRecord(); } /** * 查询订单 */ @ApiOperation("订单查询") @PostMapping("/wx/query") public Map<String, Object> orderQuery(@RequestParam("out_trade_no") String out_trade_no) { return wxPayInfoService.orderQuery(out_trade_no); } /** * 微信小程序支付成功回调 * @param request 请求 * @param response 响应 * @return 返回结果 * @throws Exception 异常处理 */ @RequestMapping("/weixin/callback") public String callBack(HttpServletRequest request, HttpServletResponse response) throws Exception { System.out.println("接口已被调用"); ServletInputStream inputStream = request.getInputStream(); String notifyXml = StreamUtils.inputStream2String(inputStream, "utf-8"); System.out.println(notifyXml); // 解析返回结果 Map<String, String> notifyMap = WXPayUtil.xmlToMap(notifyXml); // 判断支付是否成功 if ("SUCCESS".equals(notifyMap.get("result_code"))) { //支付成功时候,处理业务逻辑 System.out.println("支付成功"); System.out.println("<xml>" + "<return_code><![CDATA[SUCCESS]]></return_code>" + "<return_msg><![CDATA[OK]]></return_msg>" + "</xml> "); /** * 注意 * 因为微信回调会有八次之多,所以当第一次回调成功了,那么我们就不再执行逻辑了 * return返回的结果一定是这种格式,当result_code返回的结果是SUCCESS时,则不进行调用了 * 如果不返回下面的格式,业务逻辑会出现回调多次的情况,我就遇到过这种情况。 */ return "<xml>" + "<return_code><![CDATA[SUCCESS]]></return_code>" + "<return_msg><![CDATA[OK]]></return_msg>" + "</xml> "; } // 创建响应对象:微信接收到校验失败的结果后,会反复的调用当前回调函数 Map<String, String> returnMap = new HashMap<>(); returnMap.put("return_code", "FAIL"); returnMap.put("return_msg", ""); String returnXml = WXPayUtil.mapToXml(returnMap); response.setContentType("text/xml"); System.out.println("校验失败"); return returnXml; } }
签名失败
如果出现签名错误,请检查后再试。去重置秘钥:微信商户平台(pay.weixin.qq.com)–>账户设置–>API安全–>密钥设置
签名成功
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