测试接口： https://fraud.mch.weixin.qq.com/secsvc/realnameauth 返回参数：<xml><return_code>SUCCESS</return_code><result_code>FAIL</result_code><err_code>SYSTEM_ERROR [104]</err_code><appid>wx2c43454XXXX96faf</appid><mch_id>1520XXX071</mch_id><nonce_str>UjSMDTsYF7msKGyO</nonce_str><sign>8827F566265F2D253529EAFA6ED2C9D1634340ED29A7A7210B5BCFE1C51A985B</sign></xml> 请求参数:<xml><access_token>24.b5741a1d5a399ce8428504a9a8ce9c67.2592000.1607495111.282335-20563747</access_token><nonce_str>zBXEGOwklkXXXXPy77s4NJMi9MII7lyY</nonce_str><cred_type>1</cred_type><cred_id>411123XXXX09304019</cred_id><openid>odmTjwBLlsV3MaMSXXXXxgAcWn7M</openid><appid>wx2c43454XXXX96faf</appid><sign>121B241D55537CXXXX526C65238200F1</sign><real_name>����</real_name><mch_id>1520109071</mch_id><version>1.1</version><sign_type>HMAC-SHA256</sign_type></xml>