上送：

POST

/v3/apply4subject/applyment

1584596389

KD0Lc6sByJxJ69IifmQcnkg4GFzbiHwN

{"business_code":"1111111111","contact_info":{"name":"����","mobile":"13312345678","id_card_number":"430422199001236704"},"subject_info":{"subject_type":"SUBJECT_TYPE_ENTERPRISE","business_licence_info":{"licence_number":"914201123033363296","licence_copy":"333","merchant_name":"sss","legal_person":"ss","company_address":"ss","licence_valid_date":"1970-01-01"},"company_prove_copy":"33"},"identification_info":{"identification_type":"IDENTIFICATION_TYPE_IDCARD","identification_name":"ss","identification_number":"430422199001236705","identification_valid_date":"1970 - 01 - 01","identification_front_copy":"11","identification_back_copy":"323"}}

返回：{

"code": "SIGN_ERROR",

"detail": {

"detail": {

"issue": "sign not match"

},

"field": "signature",

"location": "authorization",

"sign_information": {

"method": "POST",

"sign_message_length": 78,

"truncated_sign_message": "POST\n/v3/apply4subject/applyment\n1584596389\nKD0Lc6sByJxJ69IifmQcnkg4GFzbiHwN\n\n",

"url": "/v3/apply4subject/applyment"

}

},

"message": "错误的签名，验签失败"

}

请求发起是有body的，为什么微信返回的没有body，是空的，就像是没有上送body一样，

同样的json请求，图片上传是ok的，

参数也完全按照官网文档，编写的json串，

到底是哪出的问题？？！！！！！！求解。