接口说明
接口说明
#接口Demo
目前仅提供部分开发语言的demo，其他语言请参照下方接口文档进行开发。
也欢迎热心的开发者到 讯飞开放平台社区 分享你们的demo。
#接口要求
| 内容 | 说明 |
|---|---|
| 传输方式 | http[s] (为提高安全性，强烈推荐https) |
| 请求地址 | http(s): //api.xf-yun.com/v1/private/s19cfe728 注：服务器IP不固定，为保证您的接口稳定，请勿通过指定IP的方式调用接口，使用域名方式调用 |
| 请求行 | POST /v1/private/ss19cfe728 |
| 接口鉴权 | 签名机制，详情请参照下方鉴权认证 |
| 字 符编码 | UTF-8 |
| 响应格式 | 统一采用JSON格式 |
| 开发语言 | 任意，只要可以向讯飞云服务发起HTTP请求的均可 |
| 适用范围 | 任意操作系统，但因不支持跨域不适用于浏览器 |
| 图片格式 | jpg/jpeg/png/bmp |
| 图片大小 | base64编码后大小不超过4M |
#接口调用流程
· 将请求参数以及图片数据放在Http Request Body中，以POST表单的形式提交，详见下方 请求参数 。
· 向服务器端发送Http请求后，接收服务器端的返回结果。
#鉴权认证
#鉴权方法
https://api.xf-yun.com/v1/private/s19cfe728?authorization=YXBpX2tleT0iOTEyMDVhZmUwZDE3ZTM4YzYxYmUzNWZjYTM0NjUwM2MiLCBhbGdvcml0aG09ImhtYWMtc2hhMjU2IiwgaGVhZGVycz0iaG9zdCBkYXRlIHJlcXVlc3QtbGluZSIsIHNpZ25hdHVyZT0iOXM0alJ4eVU1OEgxVG12R0JNbm9jazlZYU9BV0RNMXY1ZFBrRGNPKzF5QT0i&host=api.xf-yun.com%3A-1&date=Mon%2C+23+Nov+2020+06%3A31%3A17+GMT| 参数 | 类型 | 必须 | 说明 | 示例 |
|---|---|---|---|---|
| host | string | 是 | 请求主机 | api.xf-yun.com |
| date | string | 是 | 当前时间戳，RFC1123格式("EEE, dd MMM yyyy HH:mm:ss z") | Fri, 17 Jul 2020 06:26:58 GMT |
| authorization | string | 是 | 使用base64编码的签名相关信息(签名基于hamc-sha256计算) | 参考下方详细生成规则 |
服务 端会对date进行时钟偏移检查，最大允许300秒的偏差，超出偏差的请求都将被拒绝。
在讯飞开放平台控制台，创建一个应用后打开人脸比对页面可以获取，均为32位字符串。
api_key="$api_key",algorithm="hmac-sha256",headers="host date request-line",signature="$signature"signature 是使用加密算法对参与签名的参数签名后并使用base64编码的字符串，详见下方。
拼接的格式为(\n为换行符,’:’后面有一个空格)：
host: $host\ndate: $date\n$request-line请求url = api.xf-yun.com
date = Fri, 17 Jul 2020 06:26:58 GMThost: api.xf-yun.com
date: Fri, 17 Jul 2020 06:26:58 GMT
POST /v1/private/s19cfe728 HTTP/1.1signature_sha=hmac-sha256(signature_origin,$apiSecret)signature=base64(signature_sha)APISecret = apisecretXXXXXXXXXXXXXXXXXXXXXXX
date = Fri, 17 Jul 2020 06:26:58 GMTsignature=1gWRhcJRcOEJyWzoHZkHxxBgXEp0NCFHrPOoFJXu6M0=api_key="apikeyXXXXXXXXXXXXXXXXXXXXXXXXXX", algorithm="hmac-sha256", headers="host date request-line", signature="1gWRhcJRcOEJyWzoHZkHxxBgXEp0NCFHrPOoFJXu6M0="authorization = base64(authorization_origin)
示例：
authorization=YXBpX2tleT0iOTEyMDVhZmUwZDE3ZTM4YzYxYmUzNWZjYTM0NjUwM2MiLCBhbGdvcml0aG09ImhtYWMtc2hhMjU2IiwgaGVhZGVycz0iaG9zdCBkYXRlIHJlcXVlc3QtbGluZSIsIHNpZ25hdHVyZT0iMWdXUmhjSlJjT0VKeVd6b0haa0h4eEJnWEVwME5DRkhyUE9vRkpYdTZNMD0i#鉴权结果
| HTTP Code | 说明 | 错误描述信息 | 解决方法 |
|---|---|---|---|
| 401 | 缺少authorization参数 | {"message":"Unauthorized"} | 检查是否有authorization参数，详情见authorization参数详细生成规则 |
| 401 | 签名参数解析失败 | {“message”:”HMAC signature cannot be verified”} | 检查签名的各个参数是否有缺失是否正确，特别确认下复制的api_key是否正确 |
| 401 | 签名校验失败 | {“message”:”HMAC signature does not match”} | 签名验证失败，可能原因有很多。 1. 检查api_key,api_secret 是否正确。 2.检查计算签名的参数host，date，request-line是否按照协议要求拼接。 3. 检查signature签名的base64长度是否正常(正常44个字节)。 |
| 403 | 时钟偏移校验失败 | {“message”:”HMAC signature cannot be verified, a valid date or x-date header is required for HMAC Authentication”} | 检查服务器时间是否标准，相差5分钟以上会报此错误 |
HTTP/1.1 403 Forbidden
Date: Thu, 06 Dec 2018 07:55:16 GMT
Content-Length: 116
Content-Type: text/plain; charset=utf-8
{
"message": "HMAC signature cannot be verified, a valid date or x-date header is required for HMAC Authentication"
}object_list[n].region_list[n].text_block_list[n].value
| 参数名 | 类型 | 描述 | 备注 |
|---|---|---|---|
| engine_version | string | 引擎版本号 | 版本相关信息，无需特别关注 |
| error_code | int | 返回码（0表示成功） | |
| error_msg | string | 描述返回码信息 | |
| object_count | int | 目标数量 | 目前仅支持一次识别一个目标，一般返回1 |
| version | string | json协议的版本号 | 版本相关信息，无需特别关注 |
| object_list | array | 目标版面分析结果 | |
| object_list[n].error_code | int | 当前图片识别错误码（0表示成功） | |
| object_list[n].error_msg | string | 当前图片识别错误码信息 | |
| object_list[n].type | string | 预留字段，暂无需关注 | |
| object_list[n].description | string | 识别的目标图像类别名称 | |
| object_list[n].width | int | 目标图像的宽度 | |
| object_list[n].height | int | 目标图像的高度 | |
| object_list[n].idx | int | 输出图片索引 | |
| object_list[n].table_count | int | 表格区域数量 | 火车票识别此项返回0 |
| object_list[n].table_list | array | 表格区域 | 火车票识别此项返回空 |
| object_list[n].region_count | int | 通用区域数量 | |
| object_list[n].region_list | array | 通用区域 | |
| object_list[n].region_list[n] .id | string | 序号，从0开始 | |
| object_list[n].region_list[n] .order | int | 同层级内的阅读顺序 | 无需特别关注 |
| object_list[n].region_list[n] .type | string | 区域类型 | 可能返回的值有 Number1：票号 Ticket-check：检票口 Station-From：起始站 Number2-Train：车次 Station-To：目的站 Date：发车日期 Time：开车时间 Seat： 座位号 Number3-Amount：票价 Seat-type：座位类型 Number4-Identity：身份证号码 Name：乘车人姓名 Number5：条码数字 |
| object_list[n].region_list[n] .position | object | 区域位置 | |
| object_list[n].region_list[n] .position.tl_point | object | 区域左上角坐标 | |
| object_list[n].region_list[n] .position.tl_point.x | int | 区域左上角x坐标 | |
| object_list[n].region_list[n] .position.tl_point.y | int | 区域左上角y坐标 | |
| object_list[n].region_list[n] .position.tr_point | object | 区域右上角坐标 | |
| object_list[n].region_list[n] .position.tr_point.x | int | 区域右上角x坐标 | |
| object_list[n].region_list[n] .position.tr_point.y | int | 区域右上角y坐标 | |
| object_list[n].region_list[n] .position.bl_point | object | 区域左下角坐标 | |
| object_list[n].region_list[n] .position.bl_point.x | int | 区域左下角x坐标 | |
| object_list[n].region_list[n] .position.bl_point.y | int | 区域左下角y坐标 | |
| object_list[n].region_list[n] .position.br_point | object | 区域右下角坐标 | |
| object_list[n].region_list[n] .position.br_point.x | int | 区域右下角x坐标 | |
| object_list[n].region_list[n] .position.br_point.y | int | 区域右下角y坐标 | |
| object_list[n].region_list[n] .text_block_count | int | 文本块数量 | |
| object_list[n].region_list[n] .text_block_list | array | 文本块结果 | |
| object_list[n].region_list[n] .text_block_list[n].id | string | id识别码 | |
| object_list[n].region_list[n] .text_block_list[n].order | int | 同层级内的阅读顺 | 无需特别关注 |
| object_list[n].region_list[n] .text_block_list[n].key | string | 要素key值 | 可能返回的值有 Number1：票号 Ticket-check：检票口 Station-From：起始站 Number2-Train：车次 Station-To：目的站 Date：发车日期 Time：开车时间 Seat： 座位号 Number3-Amount：票价 Seat-type：座位类型 Number4-Identity：身份证号码 Name：乘车人姓名 Number5：条码数字 |
| object_list[n].region_list[n] .text_block_list[n].value | string | 要素value值，识别后处理结果 | |
| object_list[n].region_list[n] .text_block_list[n].position | object | 文本块区域位置 | |
| object_list[n].region_list[n] .text_block_list[n].position.tl_point | object | 区域左上角坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.tl_point.x | int | 区域左上角x坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.tl_point.y | int | 区域左上角y坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.tr_point | object | 区域右上角坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.tr_point.x | int | 区域右上角x坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.tr_point.y | int | 区域右上角y坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.bl_point | object | 区域左下角坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.bl_point.x | int | 区域左下角x坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.bl_point.y | int | 区域左下角y坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.br_point | object | 区域右下角坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.br_point.x | int | 区域右下角x坐标 | |
| object_list[n].region_list[n] .text_block_list[n].position.br_point.y | int | 区域右下角y坐标 | |
| object_list[n].region_list[n] .text_block_list[n].ocr_flag | int | 当前要素是否进行识别，1代表识别，0代表不识别 | |
| object_list[n].region_list[n] .text_block_list[n].tag | object | 保留字段，无需特别关注 | |
| object_list[n].region_list[n] .text_block_list[n].class | string | 所属要素类型，英文名 | 可能返回的值有 Number1：票号 Ticket-check：检票口 Station-From：起始站 Number2-Train：车次 Station-To：目的站 Date：发车日期 Time：开车时间 Seat： 座位号 Number3-Amount：票价 Seat-type：座位类型 Number4-Identity：身份证号码 Name：乘车人姓名 Number5：条码数字 |
| object_list[n].region_list[n] .text_block_list[n].text_sent_count | int | 文本行数量 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list | object | 识别的文本行（文本块内可能包含多行文本） | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].text | string | 文本行文字内容 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position | object | 文本块区域位置 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.tl_point | object | 区域左上角坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.tl_point.x | int | 区域左上角x坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.tl_point.y | int | 区域左上角y坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.tr_point | object | 区域右上角坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.tr_point.x | int | 区域右上角x坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.tr_point.y | int | 区域右上角y坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.bl_point | object | 区域左下角坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.bl_point.x | int | 区域左下角x坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.bl_point.y | int | 区域左下角y坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.br_point | object | 区域右下角坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.br_point.x | int | 区域右下角x坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].position.br_point.y | int | 区域右下角y坐标 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].image_data | string | 文本行图片base64编码数据，如不可解码则可不使用 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].angle | float | 文本行角度（0-360），在原图中 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].char_count | int | 文本行字符数 | |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].det_score | float | 要素检测框置信度 | 无需特别关注 |
| object_list[n].region_list[n] .text_block_list[n].text_sent_list[n].score | float | 该行文本识别置信度 |
{
"header": {
"code": 0,
"message": "success",
"sid": "ase0007ef41@hu175f4100e560210882"
},
"payload": {
"result": {
"compress": "raw",
"encoding": "utf8",
"format": "json",
"text": "ewogICAiZW5naW5lX3Zlc..."
}
}
}{
"error_msg": "Success",
"object_list": [{
"table_count": 0,
"region_list": [{
"text_block_list": [{
"text_sent_count": 1,
"ocr_flag": 1,
"text_sent_list": [{
"score": 0.89501667022705078,
"det_score": 0.99697911739349365,
"image_data": "/9j/4AAQ...",
"angle": 0.0,
"char_count": 10,
"position": {
"bl_point": {
"x": 60,
"y": 68
},
"br_point": {
"x": 58,
"y": 28
},
"tr_point": {
"x": 273,
"y": 22
},
"tl_point": {
"x": 275,
"y": 62
}
},
"text": "237S080148"
}],
"id": "0",
"position": {
"bl_point": {
"x": 58,
"y": 69
},
"br_point": {
"x": 277,
"y": 69
},
"tr_point": {
"x": 277,
"y": 22
},
"tl_point": {
"x": 58,
"y": 22
}
},
"tag": "",
"class": "Number1",
"value": "237S080148",
"key": "Number1",
"order": 0
}],
"text_block_count": 1,
"id": "0",
"position": {
"bl_point": {
"x": 58,
"y": 69
},
"br_point": {
"x": 277,
"y": 69
},
"tr_point": {
"x": 277,
"y": 22
},
"tl_point": {
"x": 58,
"y": 22
}
},
"type": "Number1",
"order": 0
}, {
"text_block_list": [{
"text_sent_count": 1,
"ocr_flag": 1,
"text_sent_list": [{
"score": 0.61800277233123779,
"det_score": 0.54159075021743774,
"image_data": "/9j/4AAQSkZ...",
"angle": 0.0,
"char_count": 7,
"position": {
"bl_point": {
"x": 681,
"y": 54
},
"br_point": {
"x": 538,
"y": 54
},
"tr_point": {
"x": 538,
"y": 8
},
"tl_point": {
"x": 681,
"y": 8
}
},
"text": "沪A售"
}],
"id": "1",
"position": {
"bl_point": {
"x": 538,
"y": 55
},
"br_point": {
"x": 682,
"y": 55
},
"tr_point": {
"x": 682,
"y": 8
},
"tl_point": {
"x": 538,
"y": 8
}
},
"tag": "",
"class": "Ticket-check",
"value": "沪A售",
"key": "Ticket-check",
"order": 0
}],
"text_block_count": 1,
"id": "1",
"position": {
"bl_point": {
"x": 538,
"y": 55
},
"br_point": {
"x": 682,
"y": 55
},
"tr_point": {
"x": 682,
"y": 8
},
"tl_point": {
"x": 538,
"y": 8
}
},
"type": "Ticket-check",
"order": 1
}, {
"text_block_list": [{
"text_sent_count": 1,
"ocr_flag": 1,
"text_sent_list": [{
"score": 0.66385108232498169,
"det_score": 0.98743045330047607,
"image_data": "/9j/4AAQSk...",
"angle": 0.0,
"char_count": 6,
"position": {
"bl_point": {
"x": 262,
"y": 129
},
"br_point": {
"x": 116,
"y": 129
},
"tr_point": {
"x": 116,
"y": 77
},
"tl_point": {
"x": 262,
"y": 77
}
},
"text": "上海"
}],
"id": "2",
"position": {
"bl_point": {
"x": 116,
"y": 130
},
"br_point": {
"x": 263,
"y": 130
},
"tr_point": {
"x": 263,
"y": 77
},
"tl_point": {
"x": 116,
"y": 77
}
},
"tag": "",
"class": "Station-From",
"value": "上海",
"key": "Station-From",
"order": 0
}],
"text_block_count": 1,
"id": "2",
"position": {
"bl_point": {
"x": 116,
"y": 130
},
"br_point": {
"x": 263,
"y": 130
},
"tr_point": {
"x": 263,
"y": 77
},
"tl_point": {
"x": 116,
"y": 77
}
},
"type": "Station-From",
"order": 2
}, {
"text_block_list": [{
"text_sent_count": 1,
"ocr_flag": 1,
"text_sent_list": [{
"score": 0.82063788175582886,
"det_score": 0.99642026424407959,
"image_data": "/9j/4AAQ...",
"angle": 0.0,
"char_count": 7,
"position": {
"bl_point": {
"x": 442,
"y": 100
},
"br_point": {
"x": 306,
"y": 100
},
"tr_point": {
"x": 306,
"y": 62
},
"tl_point": {
"x": 442,
"y": 62
}
},
"text": "K696次"
}],
"id": "3",
"position": {
"bl_point": {
"x": 306,
"y": 101
},
"br_point": {
"x": 443,
"y": 101
},
"tr_point": {
"x": 443,
"y": 62
},
"tl_point": {
"x": 306,
"y": 62
}
},
"tag": "",
"class": "Number2-Train",
"value": "K696次",
"key": "Number2-Train",
"order": 0
}],
"text_block_count": 1,
"id": "3",
"position": {
"bl_point": {
"x": 306,
"y": 101
},
"br_point": {
"x": 443,
"y": 101
},
"tr_point": {
"x": 443,
"y": 62
},
"tl_point": {
"x": 306,
"y": 62
}
},
"type": "Number2-Train",
"order": 3
}, {
"text_block_list": [{
"text_sent_count": 1,
"ocr_flag": 1,
"text_sent_list": [{
"score": 0.57298558950424194,
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}#错误码
| 错误码 | 错误描述 | 说明 | 处理策略 |
|---|---|---|---|
| 10009 | input invalid data | 输入数据非法 | 检查输入数据 |
| 10010 | service license not enough | 没有授权许可或授权数已满 | 请到控制台提交工单联系技术人员 |
| 10019 | service read buffer timeout, session timeout | session超时 | 检查是否数据发送完毕但未关闭连接 |
| 10114 | session timeout | session 超时 | 会话时间超时，检查是否发送数据时间超过了60s |
| 10139 | invalid param | 参数错误 | 检查参数是否正确 |
| 10160 | parse request json error | 请求数据格式非法 | 检查请求数据是否是合法的json |
| 10161 | parse base64 string error | base64解码失败 | 检查发送的数据是否使用base64编码了 |
| 10163 | param validate error:... | 参数校验失败 | 具体原因见详细的描述 |
| 10200 | read data timeout | 读取数据超时 | 检查是否累计10s未发送数据并且未关闭连接 |
| 10223 | RemoteLB: can't find valued addr | lb 找不到节点 | 请到控制台提交工单联系技术人员 |
| 10313 | invalid appid | appid和apikey不匹配 | 检查appid是否合法 |
| 10317 | invalid version | 版本非法 | 请到控制台提交工单联系技术人员 |
| 10700 | not authority | 引擎异常 | 按照报错原因的描述，对照开发文档检查输入输出，如果仍然无法排除问题，请提供sid以及接口返回的错误信息，到控制台提交工单联系技术人员排查。 |
| 11200 | auth no license | 功能未授权 | 请先检查appid是否正确，并且确保该appid下添加了相关服务。若没问题，则按照如下方法排查。 1. 确认总调用量是否已超越限制，或者总次数授权已到期，若已超限或者已过期请联系商务人员。 2. 查看是否使用了未授权的功能，或者授权已过期。 |
| 11201 | auth no enough license | 该APPID的每日交互次数超过限制 | 根据自身情况提交应用审核进行服务量提额，或者联系商务购买企业级正式接口，获得海量服务量权限以便商用。 |
#调用示例
#常见问题
#火车票识别为什么有的关键key没有返回，如发车日期Date等？
答：有的火车票比较老，日期格式排版不符合接口要求，可能会导致Date等关键key识别丢失。
#火车票识别支持什么应用平台？
答：目前支持Web API应用平台。
#火车票识别对车票图片有什么要求吗？
答：需要清晰的火车票图片，格式为jpg/jpeg/png/bmp，同时图片大小base64编码后不要超过4M。