精品题库 API 简介

概念解释

精品题库：有道智云精品题库服务基于文字识别技术，结合组段和渲染技术，满足用户的需求。

说明

Hi，您好，欢迎使用有道智云精品题库服务。

如果您想快速体验服务，建议您前往 精品题库体验中心 或者在体验中心右下侧找到小程序二维码，扫描进行体验。

本文档主要针对需要集成精品题库服务HTTP API的开发工程师，详细描述有道智云精品题库能力及如何集成的技术内容。

如果您有与我们商务合作的需求，可以通过以下方式联系我们：

商务邮箱： AIcloud_Business@corp.youdao.com

如果您对文档内容有任何疑问，可以通过以下几种方式联系我们：

客服QQ：1906538062

智云精品题库交流QQ群：685832941

联系邮箱： zhiyun@corp.youdao.com

温馨提示：

• 本文档主要针对开发人员，接入测试前需要在后台创建API应用，获取应用ID和应用密钥；如果您还没有，请按照 新手指南 获取。
• 平台向每个账户赠送50元的体验金，供用户集成前测试所用，具体资费规则详见 精品题库服务报价 。

接口介绍

接口地址

https 接口： https://openapi.youdao.com/ocrquestionapi

协议须知

调用方在集成精品题库API时，请遵循以下规则。

接口调用参数

调用API需要想接口发送以下字段来访问服务。

签名sign生成方法如下： signType=v2； sign=sha256(应用ID+input+salt+curtime+应用密钥)。 其中，input的计算方式为：input=q前10个字符 + q长度 + q后10个字符（当q长度大于20）或 input=q字符串（当q长度小于等于20）。 具体示例如下： a.比如：q="Welcome to youdao AICloud.",字符串长度为26，大于20，其input="Welcome to"(前10个字符) + 26（字符串长度） + "o AICloud."（q字符串后10个字符）。 b.比如：q = "sdT4bWrjS"，字符串长度为9，小于20，input = "sdT4bWrjS".

输出字段介绍

响应结果是以json形式输出，包含字段如下表所示：

##输出结果示例

{
    "data": {
        "questions": [{
            "answer": "<p>CM=DM </p><p><br/></p>",
            "id": "894fd7be65ce7b0288188bd871eebd08",
            "analysis": "<p>因为OP平分∠AOB, PC⊥OA于点C, PD⊥OB于点D,所以PD=PC,∠DPM=∠CPM.又因为PM=<br/>PM,所以△MPD≌△MPC,所以CM=DM. </p>",
            "content": "<p>如图,OP平分∠AOB, PC⊥OA于点C, PD⊥OB于点D,M为OP上任意一点,连接CM, DM,则CM和DM的大小关系是______.<br/></p><p><img src=\"http://nos.netease.com/yd-searchq/17eb37cb-1990-4453-aea8-ca151ae066fe.png\" title=\"1533365392716.png\" alt=\"blob.png\"/></p>",
            "knowledge": ""
        }, {
            "answer": "相等",
            "id": "fe9ee50505cdbd32244be8ba4cd20e2c",
            "analysis": "∵OP平分∠AOB&#xff0c;PC⊥OA&#xff0c;PD⊥OB&#xff0c; <br />∴PC&#61;PD&#xff0c;∠OPC&#61;∠OPD&#xff0c; <br />在△CPM和△DPM中&#xff0c;<img src=\"http://nos.netease.com/yd-searchq/c502f498-05e3-4828-8286-feb1a3d21abc.gif\" />&#xff0c; <br />∴△CPM≌△DPM(SAS)&#xff0c; <br />∴CM&#61;DM&#xff0e; <br />故答案为&#xff1a;相等&#xff0e; <br />根据角平分线上的点到角的两边距离相等可得PC&#61;PD&#xff0c;再求出∠OPC&#61;∠OPD&#xff0c;然后利用“边角边”证明△CPM和△DPM全等&#xff0c;根据全等三角形对应边相等可得CM&#61;DM&#xff0e; <br />本题考查了角平分线上的点到角的两边距离相等的性质&#xff0c;全等三角形的判定与性质&#xff0c;熟记性质并确定出全等三角形是解题的关键&#xff0e;",
            "content": "<img src=\"http://nos.netease.com/yd-searchq/a102f7ea-9c15-4a1d-afde-64f9d226ba57.gif\" />如图&#xff0c;OP平分∠AOB&#xff0c;PC⊥OA于C&#xff0c;PD⊥OB于D&#xff0e;M为OP上任意一点&#xff0c;连结CM、DM&#xff0c;则CM和DM的大小关系是 ______ &#xff0e;",
            "knowledge": "图形的性质>>图形认识初步>>角平分线的性质"
        }, {
            "answer": "解&#xff1a;∵OP平分∠AOB&#xff0c;PC⊥OA&#xff0c;PD⊥OB&#xff0c;<br />∴PC&#61;PD&#xff0c;∠OPC&#61;∠OPD&#xff0c;<br />在△CPM和△DPM中&#xff0c; \\( \\left\\{\\begin{array}{c}CP&#61;DP\\\\∠OPC&#61;∠OPD\\\\PM&#61;PM\\end{array}\\right. \\) &#xff0c;<br />∴△CPM≌△DPM(SAS)&#xff0c;<br />∴CM&#61;DM&#xff0e;<br />故答案为&#xff1a;相等&#xff0e;",
            "id": "d2db5fecc55c78092298f0889482dd44",
            "analysis": "本题考查了角平分线上的点到角的两边距离相等的性质&#xff0c;全等三角形的判定与性质&#xff0c;熟记性质并确定出全等三角形是解题的关键&#xff0e;",
            "content": "<img src=\"http://nos.netease.com/yd-searchq/8b8c0270-8fa5-4791-be64-fcf4652033e7.jpg\" /> <br />如图&#xff0c;OP平分∠AOB&#xff0c;PC⊥OA于C&#xff0c;PD⊥OB于D&#xff0e;M为OP上任意一点&#xff0c;连结CM、DM&#xff0c;则CM和DM的大小关系是__&#xff0e;",
            "knowledge": "角平分线的性质,全等三角形的判定与性质"
        }],
        "text": "如-3-11,0 ， 平分∠AOB,PC OA于C.PDLO1S于D,M为OP上H 意一点,连接CM,DM,则CM和DM的大小关系是 ，"
    },
    "errorCode": "0"
}

服务配置

错误代码列表

常用语言 Demo

Java 示例

package com.youdao.ai;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.*;

public class OcrquestionV2Demo {

    private static Logger logger = LoggerFactory.getLogger(OcrquestionV2Demo.class);

    private static final String YOUDAO_URL = "https://openapi.youdao.com/ocrquestionapi";

    private static final String APP_KEY = "您的应用ID";

    private static final String APP_SECRET = "您的应用密钥";

    public static void main(String[] args) throws IOException {

        Map<String,String> params = new HashMap<String,String>();
        String q = loadAsBase64("图片的路径");
        String salt = String.valueOf(System.currentTimeMillis());
        params.put("q", q);
        params.put("signType", "v2");
        String curtime = String.valueOf(System.currentTimeMillis() / 1000);
        params.put("curtime", curtime);
        String signStr = APP_KEY + truncate(q) + salt + curtime + APP_SECRET;
        String sign = getDigest(signStr);
        params.put("appKey", APP_KEY);
        params.put("salt", salt);
        params.put("sign", sign);
        String result = requestForHttp(YOUDAO_URL,params);
        /** 处理结果 */
        System.out.println(result);
    }

    public static String requestForHttp(String url,Map<String,String> params) throws IOException {
        String result = "";

        /** 创建HttpClient */
        CloseableHttpClient httpClient = HttpClients.createDefault();

        /** httpPost */
        HttpPost httpPost = new HttpPost(url);
        List<NameValuePair> paramsList = new ArrayList<NameValuePair>();
        Iterator<Map.Entry<String,String>> it = params.entrySet().iterator();
        while(it.hasNext()){
            Map.Entry<String,String> en = it.next();
            String key = en.getKey();
            String value = en.getValue();
            paramsList.add(new BasicNameValuePair(key,value));
        }
        httpPost.setEntity(new UrlEncodedFormEntity(paramsList,"UTF-8"));
        CloseableHttpResponse httpResponse = httpClient.execute(httpPost);
        try{
            HttpEntity httpEntity = httpResponse.getEntity();
            result = EntityUtils.toString(httpEntity,"UTF-8");
            EntityUtils.consume(httpEntity);
        }finally {
            try{
                if(httpResponse!=null){
                    httpResponse.close();
                }
            }catch(IOException e){
                logger.info("## release resouce error ##" + e);
            }
        }
        return result;
    }

    /**
     * 生成加密字段
     */
    public static String getDigest(String string) {
        if (string == null) {
            return null;
        }
        char hexDigits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
        byte[] btInput = string.getBytes(StandardCharsets.UTF_8);
        try {
            MessageDigest mdInst = MessageDigest.getInstance("SHA-256");
            mdInst.update(btInput);
            byte[] md = mdInst.digest();
            int j = md.length;
            char str[] = new char[j * 2];
            int k = 0;
            for (byte byte0 : md) {
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(str);
        } catch (NoSuchAlgorithmException e) {
            return null;
        }
    }

    public static String loadAsBase64(String imgFile)
  {//将图片文件转化为字节数组字符串，并对其进行Base64编码处理

    File file = new File(imgFile);
    if(!file.exists()){
        logger.error("文件不存在");
        return null;
    }
    InputStream in = null;
    byte[] data = null;
      //读取图片字节数组
    try
    {
        in = new FileInputStream(imgFile);
        data = new byte[in.available()];
        in.read(data);
        in.close();
    }
    catch (IOException e)
    {
        e.printStackTrace();
    }
      //对字节数组Base64编码
    return Base64.getEncoder().encodeToString(data);//返回Base64编码过的字节数组字符串
  }

  public static String truncate(String q) {
        if (q == null) {
            return null;
        }
        int len = q.length();
        String result;
        return len <= 20 ? q : (q.substring(0, 10) + len + q.substring(len - 10, len));
    }
}

Python2 示例

# -*- coding: utf-8 -*-
import sys
import uuid
import requests
import base64
import hashlib
import time

reload(sys)
sys.setdefaultencoding('utf-8')

YOUDAO_URL = 'https://openapi.youdao.com/ocrquestionapi'
APP_KEY = '您的应用ID'
APP_SECRET = '您的应用密钥'

def truncate(q):
    if q is None:
        return None
    q_utf8 = q.decode("utf-8")
    size = len(q_utf8)
    return q_utf8 if size <= 20 else q_utf8[0:10] + str(size) + q_utf8[size - 10:size]

def encrypt(signStr):
    hash_algorithm = hashlib.sha256()
    hash_algorithm.update(signStr.encode('utf-8'))
    return hash_algorithm.hexdigest()


def do_request(data):
    headers = {'Content-Type': 'application/x-www-form-urlencoded'}
    return requests.post(YOUDAO_URL, data=data, headers=headers)


def connect():
    f = open(r'图片的路径', 'rb')  # 二进制方式打开图文件
    q = base64.b64encode(f.read())  # 读取文件内容，转换为base64编码
    f.close()

    data = {}
    data['q'] = q
    data['signType'] = 'v2'
    curtime = str(int(time.time()))
    data['curtime'] = curtime
    salt = str(uuid.uuid1())
    signStr = APP_KEY + truncate(q) + salt + curtime + APP_SECRET
    sign = encrypt(signStr)
    data['appKey'] = APP_KEY
    data['salt'] = salt
    data['sign'] = sign

    response = do_request(data)
    print response.content


if __name__ == '__main__':
    connect()

Python3 示例

# -*- coding: utf-8 -*-
import sys
import uuid
import requests
import base64
import hashlib

from imp import reload


import time

reload(sys)

YOUDAO_URL = 'https://openapi.youdao.com/ocrquestionapi'
APP_KEY = '您的应用ID'
APP_SECRET = '您的应用密钥'


def truncate(q):
    if q is None:
        return None
    size = len(q)
    return q if size <= 20 else q[0:10] + str(size) + q[size - 10:size]


def encrypt(signStr):
    hash_algorithm = hashlib.sha256()
    hash_algorithm.update(signStr.encode('utf-8'))
    return hash_algorithm.hexdigest()


def do_request(data):
    headers = {'Content-Type': 'application/x-www-form-urlencoded'}
    return requests.post(YOUDAO_URL, data=data, headers=headers)


def connect():
    f = open(r'图片的路径', 'rb')  # 二进制方式打开图文件
    q = base64.b64encode(f.read()).decode('utf-8')  # 读取文件内容，转换为base64编码
    f.close()

    data = {}
    data['q'] = q
    data['signType'] = 'v2'
    curtime = str(int(time.time()))
    data['curtime'] = curtime
    salt = str(uuid.uuid1())
    signStr = APP_KEY + truncate(q) + salt + curtime + APP_SECRET
    sign = encrypt(signStr)
    data['appKey'] = APP_KEY
    data['salt'] = salt
    data['sign'] = sign

    response = do_request(data)
    print(response.content)


if __name__ == '__main__':
    connect()

C# 示例

using System;
using System.IO;
using System.Net;
using System.Text;
using System.Collections.Generic;
using System.Security.Cryptography;

namespace zhiyun_csharp_demo
{
    class OcrquestionV1Demo
    {
        public static void Main()
        {
            Dictionary<String, String> dic = new Dictionary<String, String>();
            string url = "https://openapi.youdao.com/ocrquestionapi";
            string q = LoadAsBase64("图片的路径");
            string appKey = "您的应用ID";
            string appSecret = "您的应用密钥";
            string salt = DateTime.Now.Millisecond.ToString();
            dic.Add("q", System.Web.HttpUtility.UrlEncode(q));
            dic.Add("signType", "v2");
            TimeSpan ts = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc));
            long millis = (long) ts.TotalMilliseconds;
            string curtime = Convert.ToString(millis / 1000);
            dic.Add("curtime", curtime);
            string signStr = appKey + Truncate(q) + salt + curtime + appSecret;;
            string sign = ComputeHash(signStr, new SHA256CryptoServiceProvider());
            dic.Add("appKey", appKey);
            dic.Add("salt", salt);
            dic.Add("sign", sign);
            string result = Post(url, dic);
            Console.WriteLine(result);
        }

        protected static string ComputeHash(string input, HashAlgorithm algorithm)
        {
          Byte[] inputBytes = Encoding.UTF8.GetBytes(input);
          Byte[] hashedBytes = algorithm.ComputeHash(inputBytes);
          return BitConverter.ToString(hashedBytes).Replace("-", "");
        }

        protected static string Truncate(string q)
        {
            if (q == null)
            {
               return null;
            }
            int len = q.Length;
            return len <= 20 ? q : (q.Substring(0, 10) + len + q.Substring(len - 10, 10));
        }

        protected static string LoadAsBase64(string filename)
        {
            try
            {
                FileStream filestream = new FileStream(filename, FileMode.Open);
                byte[] arr = new byte[filestream.Length];
                filestream.Position = 0;
                filestream.Read(arr, 0, (int)filestream.Length);
                filestream.Close();
                return Convert.ToBase64String(arr);
            }
            catch (Exception ex)
            {
                return null;
            }
        }

        protected static string Post(string url, Dictionary<String, String> dic)
        {
            string result = "";
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
            StringBuilder builder = new StringBuilder();
            int i = 0;
            foreach (var item in dic)
            {
                if (i > 0)
                    builder.Append("&");
                builder.AppendFormat("{0}={1}", item.Key, item.Value);
                i++;
            }
            byte[] data = Encoding.UTF8.GetBytes(builder.ToString());
            req.ContentLength = data.Length;
            using (Stream reqStream = req.GetRequestStream())
            {
                reqStream.Write(data, 0, data.Length);
                reqStream.Close();
            }
            HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
            Stream stream = resp.GetResponseStream();
            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
            {
                result = reader.ReadToEnd();
            }
            return result;
        }
    }
}

PHP 示例

<?php
define("CURL_TIMEOUT",   2000);
define("URL",            "https://openapi.youdao.com/ocrquestionapi");
define("APP_KEY",        "您的应用ID"); // 替换为您的应用ID
define("SEC_KEY",        "您的应用密钥"); // 替换为您的密钥

function do_request($q)
{
    $salt = create_guid();
    $args = array(
        'appKey' => APP_KEY,
        'salt' => $salt,
    );
    $args['q'] = $q;
    $args['signType'] = 'v2';
    $curtime = strtotime("now");
    $args['curtime'] = $curtime;
    $signStr = APP_KEY . truncate($q) . $salt . $curtime . SEC_KEY;
    $args['sign'] = hash("sha256", $signStr);
    $ret = call(URL, $args);
    print_r($ret);
    $ret = json_decode($ret, true);
    return $ret;
}

// 发起网络请求
function call($url, $args=null, $method="post", $testflag = 0, $timeout = CURL_TIMEOUT, $headers=array())
{
    $ret = false;
    $i = 0;
    while($ret === false)
    {
        if($i > 1)
            break;
        if($i > 0)
        {
            sleep(1);
        }
        $ret = callOnce($url, $args, $method, false, $timeout, $headers);
        $i++;
    }
    return $ret;
}

function callOnce($url, $args=null, $method="post", $withCookie = false, $timeout = CURL_TIMEOUT, $headers=array())
{
    $ch = curl_init();
    if($method == "post")
    {
        $data = convert($args);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_POST, 1);
    }
    else
    {
        $data = convert($args);
        if($data)
        {
            if(stripos($url, "?") > 0)
            {
                $url .= "&$data";
            }
            else
            {
                $url .= "?$data";
            }
        }
    }
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    if(!empty($headers))
    {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }
    if($withCookie)
    {
        curl_setopt($ch, CURLOPT_COOKIEJAR, $_COOKIE);
    }
    $r = curl_exec($ch);
    curl_close($ch);
    return $r;
}

function convert(&$args)
{
    $data = '';
    if (is_array($args))
    {
        foreach ($args as $key=>$val)
        {
            if (is_array($val))
            {
                foreach ($val as $k=>$v)
                {
                    $data .= $key.'['.$k.']='.rawurlencode($v).'&';
                }
            }
            else
            {
                $data .="$key=".rawurlencode($val)."&";
            }
        }
        return trim($data, "&");
    }
    return $args;
}

// uuid generator
function create_guid(){
    $microTime = microtime();
    list($a_dec, $a_sec) = explode(" ", $microTime);
    $dec_hex = dechex($a_dec* 1000000);
    $sec_hex = dechex($a_sec);
    ensure_length($dec_hex, 5);
    ensure_length($sec_hex, 6);
    $guid = "";
    $guid .= $dec_hex;
    $guid .= create_guid_section(3);
    $guid .= '-';
    $guid .= create_guid_section(4);
    $guid .= '-';
    $guid .= create_guid_section(4);
    $guid .= '-';
    $guid .= create_guid_section(4);
    $guid .= '-';
    $guid .= $sec_hex;
    $guid .= create_guid_section(6);
    return $guid;
}

function truncate($q) {
    $len = abslength($q);
    return $len <= 20 ? $q : (mb_substr($q, 0, 10) . $len . mb_substr($q, $len - 10, $len));
}

function abslength($str)
{
    if(empty($str)){
        return 0;
    }
    if(function_exists('mb_strlen')){
        return mb_strlen($str,'utf-8');
    }
    else {
        preg_match_all("/./u", $str, $ar);
        return count($ar[0]);
    }
}

function ensure_length(&$string, $length){
    $strlen = strlen($string);
    if($strlen < $length)
    {
        $string = str_pad($string, $length, "0");
    }
    else if($strlen > $length)
    {
        $string = substr($string, 0, $length);
    }
}

function create_guid_section($characters){
    $return = "";
    for($i = 0; $i < $characters; $i++)
    {
        $return .= dechex(mt_rand(0,15));
    }
    return $return;
}
// 输入
$file = "图片的路径";
$fp = fopen($file, "r") or die("Can't open file");
// base64编码
$q = base64_encode(fread($fp, filesize($file)));
fclose($fp);
do_request($q);
?>