调用地址：https://ocrapi-subject.taobao.com/ocrservice/subject
请求方式：POST
返回类型：JSON

{
  //图像数据：base64编码，要求base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和url参数只能同时存在一个
  "img": "",
  //图像url地址：图片完整URL，URL长度不超过1024字节，URL对应的图片base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和img参数只能同时存在一个
  "url": "",
  //是否需要自动旋转功能，默认不需要。 true：需要 false：不需要
  "rotate": false
}

    public static void main(String[] args) {
        String url = "https://ocrapi-subject.taobao.com/ocrservice/subject";
        String appcode = "你自己的AppCode";
        HashMap<String, String> headers = new HashMap<String, String>();
        //最后在header中的格式(中间是英文空格)为Authorization:APPCODE 83359fd73fe94948385f570e3c139105
        headers.put("Authorization", "APPCODE " + appcode);
        //根据API的要求，定义相对应的Content-Type
        headers.put("Content-Type", "application/json; charset=UTF-8");
        //如果需要使用本地图片，需要将图片base64码放在img后面，如果使用网络图片，则需要将网络图片url放于url参数后面
        String bodys = "{//图像数据：base64编码，要求base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和url参数只能同时存在一个\"img\":\"\",//图像url地址：图片完整URL，URL长度不超过1024字节，URL对应的图片base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和img参数只能同时存在一个\"url\":\"\",//是否需要自动旋转功能，默认不需要。true：需要false：不需要\"rotate\":false}";
        try {
            /**
            * 重要提示如下:
            * HttpClientUtils请从
            * https://gitee.com/duguangdemo/publicclouddemo/blob/master/src/main/java/util/HttpClientUtils.java
            * 下载
            * HttpExecuteResponse请从
            * https://gitee.com/duguangdemo/publicclouddemo/blob/master/src/main/java/util/HttpExecuteResponse.java
            * 下载
            *
            * 相应的依赖请参照
            * https://gitee.com/duguangdemo/publicclouddemo/blob/master/pom.xml
            */
            HttpExecuteResponse response = HttpClientUtils.doPost(url,bodys, headers);
            System.out.println(response.getResponseAsString());
            System.out.println(response.toString());
//            需要检查response的headers信息时可用以下代码,方便排查问题用
//            for (Object json : response.getHeaders()) {
//                System.out.println(json);
//            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

//using System.IO;
//using System.Text;
//using System.Net;
//using System.Net.Security;
//using System.Security.Cryptography.X509Certificates;

        private const String host = "https://ocrapi-subject.taobao.com";
        private const String path = "/ocrservice/subject";
        private const String method = "POST";
        private const String appcode = "你自己的AppCode";

        static void Main(string[] args)
        {
            String querys = "";
            String bodys = "{//图像数据：base64编码，要求base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和url参数只能同时存在一个\"img\":\"\",//图像url地址：图片完整URL，URL长度不超过1024字节，URL对应的图片base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和img参数只能同时存在一个\"url\":\"\",//是否需要自动旋转功能，默认不需要。true：需要false：不需要\"rotate\":false}";
            String url = host + path;
            HttpWebRequest httpRequest = null;
            HttpWebResponse httpResponse = null;

            if (0 < querys.Length)
            {
                url = url + "?" + querys;
            }

            if (host.Contains("https://"))
            {
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));
            }
            else
            {
                httpRequest = (HttpWebRequest)WebRequest.Create(url);
            }
            httpRequest.Method = method;
            httpRequest.Headers.Add("Authorization", "APPCODE " + appcode);
            //根据API的要求，定义相对应的Content-Type
            httpRequest.ContentType = "application/json; charset=UTF-8";
            if (0 < bodys.Length)
            {
                byte[] data = Encoding.UTF8.GetBytes(bodys);
                using (Stream stream = httpRequest.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);
                }
            }
            try
            {
                httpResponse = (HttpWebResponse)httpRequest.GetResponse();
            }
            catch (WebException ex)
            {
                httpResponse = (HttpWebResponse)ex.Response;
            }

            Console.WriteLine(httpResponse.StatusCode);
            Console.WriteLine(httpResponse.Method);
            Console.WriteLine(httpResponse.Headers);
            Stream st = httpResponse.GetResponseStream();
            StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8"));
            Console.WriteLine(reader.ReadToEnd());
            Console.WriteLine("\n");

        }

        public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
        {
            return true;
        }

<?php
    $host = "https://ocrapi-subject.taobao.com";
    $path = "/ocrservice/subject";
    $method = "POST";
    $appcode = "你自己的AppCode";
    $headers = array();
    array_push($headers, "Authorization:APPCODE " . $appcode);
    //根据API的要求，定义相对应的Content-Type
    array_push($headers, "Content-Type".":"."application/json; charset=UTF-8");
    $querys = "";
    $bodys = "{//图像数据：base64编码，要求base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和url参数只能同时存在一个\"img\":\"\",//图像url地址：图片完整URL，URL长度不超过1024字节，URL对应的图片base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和img参数只能同时存在一个\"url\":\"\",//是否需要自动旋转功能，默认不需要。true：需要false：不需要\"rotate\":false}";
    $url = $host . $path;

    $curl = curl_init();
    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $method);
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($curl, CURLOPT_FAILONERROR, false);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_HEADER, true);
    if (1 == strpos("$".$host, "https://"))
    {
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    }
    curl_setopt($curl, CURLOPT_POSTFIELDS, $bodys);
    var_dump(curl_exec($curl));
?>

import urllib, urllib2, sys
import ssl


host = 'https://ocrapi-subject.taobao.com'
path = '/ocrservice/subject'
method = 'POST'
appcode = '你自己的AppCode'
querys = ''
bodys = {}
url = host + path

bodys[''] = "{//图像数据：base64编码，要求base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和url参数只能同时存在一个\"img\":\"\",//图像url地址：图片完整URL，URL长度不超过1024字节，URL对应的图片base64编码后大小不超过4M，最短边至少15px，最长边最大4096px，支持jpg/png/bmp格式，和img参数只能同时存在一个\"url\":\"\",//是否需要自动旋转功能，默认不需要。true：需要false：不需要\"rotate\":false}"
post_data = bodys['']
request = urllib2.Request(url, post_data)
request.add_header('Authorization', 'APPCODE ' + appcode)

request.add_header('Content-Type', 'application/json; charset=UTF-8')
ctx = ssl.create_default_context()
ctx.check_hostname = False
ctx.verify_mode = ssl.CERT_NONE
response = urllib2.urlopen(request, context=ctx)
content = response.read()
if (content):
    print(content)

import urllib.request
import urllib.parse
import json
import time
import base64
with open('1.jpg', 'rb') as f:  # 以二进制读取本地图片
    data = f.read()
    encodestr = str(base64.b64encode(data),'utf-8')
#请求头
# 请修改为你自己的appcode，可从云市场订单或者api网关处获得
AppCode = "你自己的AppCode"
headers = {
    'Authorization': 'APPCODE ' + AppCode,
    'Content-Type': 'application/json; charset=UTF-8'
}

def posturl(url,data={}):
  try:
    params=json.dumps(dict).encode(encoding='UTF8')
    req = urllib.request.Request(url, params, headers)
    r = urllib.request.urlopen(req)
    html =r.read()
    r.close();
    return html.decode("utf8")
  except urllib.error.HTTPError as e:
      print(e.code)
      print(e.read().decode("utf8"))
  time.sleep(1)
if __name__=="__main__":
    url_request="https://ocrapi-subject.taobao.com/ocrservice/subject"
    dict = {'img': encodestr}

    html = posturl(url_request, data=dict)
    print(html)

{
    //唯一id，用于问题定位
    "sid": "3f54dde89670e40aabea33873a4a3766b3e47787fe23682795b31483015083e580461bb6",
    //算法版本
    "prism_version": "1.0.9",
    //识别的文字块的数量，prism_wordsInfo数组大小
    "prism_wnum": 0,
    //识别的文字的具体内容
    "prism_wordsInfo": [],
    //页抬头信息
    "page_title": "",
     //页码
    "page_id": 0,
    //题型大类信息
    "part_info": [
        {
            //题型标题
            "part_title": "",
            // 坐标，可能为多块
            "pos_list": [
                [
                    {
                        "x": 5,
                        "y": 3
                    },
                    {
                        "x": 696,
                        "y": 7
                    },
                    {
                        "x": 695,
                        "y": 161
                    },
                    {
                        "x": 5,
                        "y": 158
                    }
                ]
            ],
            "subject_list": [
                {
                    //在part中的序号  
                    "index": 0,
                    //题目类型：0：选择题；1：填空题；2：阅读理解（阅读+问答选择）；3：完型填空（阅读+选择）；4：阅读填空（阅读+填空）；5：问答题
                    "type": 0,
                    //整题置信度
                    "prob": 74,
                    //整题文本信息
                    "text": "2.下列三个集合:\\textcircled 1 A = \\left\\{ x | y = x ^ { 2 } + 1 \\right\\} ; \\textcircled 2 B = \\left\\{ y | y = x ^ { 2 } +     1 \\right) ; \\textcircled 3 C = \\left\\{ \\left( x , y \\right) | y = x ^ { 2 } + 1 \\right\\} . (1)它们是不是相同的集合? (2)它们各自的含义分别是什么?",
                    "pos_list": [
                        [
                            {
                                "x": 5,
                                "y": 3
                            },
                            {
                                "x": 696,
                                "y": 7
                            },
                            {
                                "x": 695,
                                "y": 161
                            },
                            {
                                "x": 5,
                                "y": 158
                            }
                        ]
                    ],
                    //题目元素
                    "element_list": [
                        {
                            //题目元素类型：0：题干；1：选项；2：解析；3：答案
                            "type": 0,
                            //元素的文本信息
                            "text": "2.下列三个集合:\\textcircled 1 A = \\left\\{ x | y = x ^ { 2 } + 1 \\right\\} ; \\textcircled 2 B = \\left\\{ y | y = x ^ { 2 } +     1 \\right) ; \\textcircled 3 C = \\left\\{ \\left( x , y \\right) | y = x ^ { 2 } + 1 \\right\\} . (1)它们是不是相同的集合? (2)它们各自的含义分别是什么?",
                            "pos_list": [
                                [
                                    {
                                        "x": 5,
                                        "y": 3
                                    },
                                    {
                                        "x": 696,
                                        "y": 7
                                    },
                                    {
                                        "x": 695,
                                        "y": 161
                                    },
                                    {
                                        "x": 5,
                                        "y": 158
                                    }
                                ]
                            ],
                            //内容
                            "content_list": [
                                {
                                    //内容类型：0：图片；1：文本；2：公式
                                    "type": 1,
                                    //内容置信度
                                    "prob": 97,
                                    //如果为图片则为bas64编码，公式则为letex编码字符串 
                                    "string": "2.下列三个集合:",
                                    //如果element-type为选项类型，则该字段标识content属于哪个选项
                                    "option": "",
                                    // 坐标，可能为多块
                                    "pos": [
                                        {
                                            "x": 5,
                                            "y": 7
                                        },
                                        {
                                            "x": 220,
                                            "y": 8
                                        },
                                        {
                                            "x": 220,
                                            "y": 33
                                        },
                                        {
                                            "x": 5,
                                            "y": 32
                                        }
                                    ]
                                },
                                {
                                    "type": 2,
                                    "prob": 97,
                                    "string": "\\textcircled 1 A = \\left\\{ x | y = x ^ { 2 } + 1 \\right\\} ; \\textcircled 2 B = \\left\\{ y | y = x ^ { 2 } +  ",
                                    "option": "",
                                    "pos": [
                                        {
                                            "x": 220,
                                            "y": 3
                                        },
                                        {
                                            "x": 695,
                                            "y": 4
                                        },
                                        {
                                            "x": 695,
                                            "y": 40
                                        },
                                        {
                                            "x": 220,
                                            "y": 39
                                        }
                                    ]
                                },
                                {
                                    "type": 2,
                                    "prob": 97,
                                    "string": "  1 \\right) ; \\textcircled 3 C = \\left\\{ \\left( x , y \\right) | y = x ^ { 2 } + 1 \\right\\} .",
                                    "option": "",
                                    "pos": [
                                        {
                                            "x": 40,
                                            "y": 45
                                        },
                                        {
                                            "x": 395,
                                            "y": 47
                                        },
                                        {
                                            "x": 394,
                                            "y": 80
                                        },
                                        {
                                            "x": 40,
                                            "y": 78
                                        }
                                    ]
                                },
                                {
                                    "type": 1,
                                    "prob": 99,
                                    "string": "(1)它们是不是相同的集合?",
                                    "option": "",
                                    "pos": [
                                        {
                                            "x": 39,
                                            "y": 93
                                        },
                                        {
                                            "x": 382,
                                            "y": 93
                                        },
                                        {
                                            "x": 382,
                                            "y": 118
                                        },
                                        {
                                            "x": 39,
                                            "y": 117
                                        }
                                    ]
                                },
                                {
                                    "type": 1,
                                    "prob": 99,
                                    "string": "(2)它们各自的含义分别是什么?",
                                    "option": "",
                                    "pos": [
                                        {
                                            "x": 39,
                                            "y": 133
                                        },
                                        {
                                            "x": 438,
                                            "y": 136
                                        },
                                        {
                                            "x": 438,
                                            "y": 161
                                        },
                                        {
                                            "x": 39,
                                            "y": 158
                                        }
                                    ]
                                }
                            ]
                        }
                    ]
                }
            ]
        }
    ]
}

{
  "error_code": 400,
  "error_msg": "img和url参数不能同时存在"
}