Attachment attachment application/octet-stream;charset=utf-8.

JSON 标准http status code应答.

JSONCustom http.StatusBadRequest式应答,自定义code码应答,一般给前端显示使用.

JSONDetail http.StatusBadRequest式应答,detail为err的stringer.

WithCode code.

WithData data.

WithDetail detail 开发调试使用.

WithError err detail为err的stringer.

WithICode Code interface 使应答修改code和msg,用于显示.

WithMsg message.

Response 信息回复基本格式.

Code custom code interface.

Option option.