接收用户发送的客服消息

将消息处理后的xml数据，这里将接收到到FromUserName与ToUserName进行互换了

<xml>

  <ToUserName><![CDATA[openid]]></ToUserName>

  <FromUserName><![CDATA[小程序appid]]></FromUserName>

  <CreateTime>1602921944</CreateTime>

  <MsgType><![CDATA[transfer_customer_service]]></MsgType>

  <Content><![CDATA[厕所]]></Content>

</xml>

数据加密后的数据

<xml>

<Encrypt><![CDATA[8HPRgFARO1YuGk5J6oVLPGfJOqo0OFjqcBr4d/clErbOep1cRjvIm2nQomeCP+8sWXYYVRI6IRrvZeSq6nB4Co5CxldOFVxYW9WBjlkySxMPCvzw7C/DLhakyMkc1Qni3nPM0M7xIbOJphbG2gn+r1HOQkzIa2OCvBjmlIv5VrtJfv/z7ulH4GOahG4ZQYcvMPiPCbslG/094wL47+r0sJ5jHb85/2JtR5+rOrHNiKU/dxHJJPMBXOnhxP9w9gADRd8xQ+nKorjJcxTyO5rBn0Bzy9RE9PRIsmKUEZjfDcvcitxDCq9hYxvy04TGmu8w3S8l/4nnYDxoGuwRmzW7vPwrKYQBy9eG09CQLnBAhMVKhlFT7+p0f1/3SfdDdjQsj4aHZWD4gGXuY391MFMGViPnW8ggi08PI0YBH2gh8K4=]]></Encrypt>

<MsgSignature><![CDATA[xxxxxx]]></MsgSignature>

<TimeStamp>1602921945</TimeStamp>

<Nonce><![CDATA[xxxxx]]></Nonce>

</xml>

是我哪一步出问题了吗？为何对话框提示“该小程序提供的服务出现故障，请稍后再试”