请求地址：/v3/marketing/favor/coupon-stocks 待签名JSON:{"stock_name":"测试券","comment":"测试券备注","belong_merchant":"1287266301","available_begin_time":"2022-02-15T10:30:35.120+08:00","available_end_time":"2022-03-15T10:30:35.120+08:00","stock_use_rule":{"max_coupons":10,"max_amount":10,"max_coupons_per_user":1,"natural_person_limit":true,"prevent_api_abuse":false},"coupon_use_rule":{"fixed_normal_coupon":{"coupon_amount":100,"transaction_minimum":1000},"trade_type":[],"combine_use":false,"available_items":[],"unavailable_items":[],"available_merchants":["1287266301"]},"no_cash":true,"stock_type":"NORMAL","out_request_no":"20220215102938","ext_info":""} 待签名字符串Http Authorization头 ："WECHATPAY2-SHA256-RSA2048 mchid=\"1287266301\",nonce_str=\"xffvsrwf.vjv\",timestamp=\"1644892606\",serial_no=\"6506A0C4B8F3D864F6129204264B47C4B51F73C9\",signature=\"kBECXNU1YKtnPrJvLulMaZnd938A6MB8yxXdTSNZAVaGqfKx1ZZngp4qZKK6+da6W6Jr0uOIfzTrUxuJWZvHpBUXm2hEpsnQMDTRpJlDjho4+3k8StYdYHH+09qMiiMXWFU+etlWb8jZ9zsF/IFZ69UYhgo9DldFOjM0BZmyJpWgTjvKQu5+HWfHW2lmM/FDyTJQFtm+Y1r0hGVykW54rlQKIp6LbUK0ile+ewADOAQUCdaKWlf0YhnKExNk8x8FKVpbU2o0sbarYiB4luTGJEB3+KpoBwf41WwT8k+J2pJAU8yPQSMxZ1isELQv2npi9w5XHzPxeXa7uwwQR6D/aQ==\"" 返回数据： {"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not match"},"field":"signature","location":"authorization","sign_information":{"method":"POST","sign_message_length":681,"truncated_sign_message":"POST\n/v3/marketing/favor/coupon-stocks\n1644892606\nxffvsrwf.vjv\n{\"stock_\n","url":"/v3/marketing/favor/coupon-stocks"}},"message":"错误的签名，验签失败"} 签名我用微信的工具验证过，签出来的结果是一样的。 [图片] [图片] [图片]