在微信小程序开发微信支付的过程中出现了以下问题：
过滤器执行了
2023-01-15 12:46:50,121 INFO com.***.InterceptOrFilter.TokenInterceptor 77 preHandle - 请求方法 wxPay 上有注解 @com.***.note.IgnoreToken()
2023-01-15 12:46:50,577 INFO com.github.binarywang.wxpay.service.impl.WxPayServiceApacheHttpImpl 75 post -
【请求地址】：https://api.mch.weixin.qq.com/pay/unifiedorder
【请求数据】：<xml>
<appid>***</appid>
<mch_id>***</mch_id>
<nonce_str>1673758010122</nonce_str>
<sign>***</sign>
<sign_type>MD5</sign_type>
<body>描述</body>
<out_trade_no>123</out_trade_no>
<total_fee>100</total_fee>
<spbill_create_ip>0:0:0:0:0:0:0:1</spbill_create_ip>
<time_start>20230115124650</time_start>
<time_expire>20230115125650</time_expire>
<notify_url>http://localhost:8080/***/pay/payNotify</notify_url>
<trade_type>JSAPI</trade_type>
<openid>***</openid>
</xml>
【响应数据】：<xml><return_code><![CDATA[FAIL]]></return_code>
<return_msg><![CDATA[签名错误，请检查后再试]]></return_msg>
</xml>
2023-01-15 12:46:50,593 ERROR com.github.binarywang.wxpay.bean.result.BaseWxPayResult 363 checkResult -
结果业务代码异常，返回结果：{return_msg=签名错误，请检查后再试, return_code=FAIL},
返回代码：FAIL，返回信息：签名错误，请检查后再试
收到事件ServletRequestHandledEvent: url=[/***/pay/api/topay/***]; client=[0:0:0:0:0:0:0:1]; method=[POST]; servlet=[dispatcherServlet]; session=[null]; user=[null]; time=[473ms]; status=[OK]
io.undertow.util.BadRequestException
at com.sldndemo.controller.PayAdminController.wxPay(PayAdminController.java:133)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:523)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:590)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
at com.sldndemo.config.CorsFilter.doFilter(CorsFilter.java:28)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:269)
at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:78)
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:133)
at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:130)
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:78)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:99)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:370)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:2019)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1558)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1449)
at java.lang.Thread.run(Thread.java:745)
以下是业务代码：
@Resource
private final WxPayService wxPayService = null;
@IgnoreToken
@PostMapping("/api/topay/{openId}")
public Object wxPay(HttpServletRequest request,@PathVariable String openId) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
//获取请求的ip地址
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
if(ip.indexOf(",")!=-1){
String[] ips = ip.split(",");
ip = ips[0].trim();
}
/**
* 处理内部业务，校验订单等
*/
final WxPayUnifiedOrderRequest wxPayUnifiedOrderRequest = WxPayUnifiedOrderRequest.newBuilder()
//调起支付的人的 openId
.openid(openId)
//订单编号
.outTradeNo("123")//订单号
//小程序支付
.tradeType(WxPayConstants.TradeType.JSAPI)
//订单金额(单位是分)BaseWxPayRequest.yuanToFen()这个方法是将元转分
.totalFee(BaseWxPayRequest.yuanToFen("1"))
//商品描述
.body("描述")
//获取本地IP
.spbillCreateIp(ip)
//回调的 URL 地址
.notifyUrl(PublicInfo.MyURL+"pay/payNotify")
//过期时间 格式yyyyMMddHHmmss (一般设置个10分钟后)
.timeExpire(sdf.format(System.currentTimeMillis() + 10 * 60 * 1000))
//当前时间 格式yyyyMMddHHmmss
.timeStart(sdf.format(System.currentTimeMillis()))
.build();
wxPayUnifiedOrderRequest.setSignType(WxPayConstants.SignType.MD5);
Object order = null;
try {
order = wxPayService.createOrder(wxPayUnifiedOrderRequest);
} catch (WxPayException e) {
try {
throw new BadRequestException(e.getErrCodeDes());
} catch (BadRequestException ex) {
ex.printStackTrace();
}
}
return order;
}
//回调接口
@ApiOperation("微信支付回调接口")
@RequestMapping(value = "/payNotify")
public String payNotify(HttpServletRequest request) {
try {
String xmlResult = IOUtils.toString(request.getInputStream(), request.getCharacterEncoding());
WxPayOrderNotifyResult notifyResult = wxPayService.parseOrderNotifyResult(xmlResult);
//getOutTradeNo 自己生成的订单号
String orderId = notifyResult.getOutTradeNo();
//支付成功
if("SUCCESS".equals(notifyResult.getResultCode())) {
System.out.println("微信支付回调：订单号"+orderId);
//自己处理订单的业务逻辑，需要判断订单是否已经支付过，否则可能会重复调用
}
//必须要给微信返回回调成功状态，否则微信会一直回调
return WxPayNotifyResponse.success("成功");
} catch (Exception e) {
System.out.println("微信回调结果异常,异常原因"+e.getMessage());
return WxPayNotifyResponse.success("code:"+9999+"微信回调结果异常,异常原因:"+e.getMessage());
}
}
目前密钥（mch-key）是一串六位的数字，例如123456
请问该如何解决？
