首页 > OCR识别服务 > 银行卡OCR识别

银行卡OCR识别API接口

银行卡OCR（API）接口定义：银行卡OCR实现银行卡正面图片进行精准识别，提取包括银行卡号、发卡行、卡类型、有效期等关键信息，应用于金融场景用户远程的身份认证、金融风控、银行卡录入等多种场景，有效提高用户的体验。

￥0.00 （100次）

价格：

更多价格，联系右下角"客服"

立即购买

请求信息
返回信息
示例代码

接口信息

请求URL：http(s)://ocr-api.shiliuai.com/api/bank_card_ocr/v1

请求方式：POST

返回类型：JSON

接口参数

请求参数（Header）

方式一：简单认证

参数	类型	说明
Content-type	string	application/json
Authorization	string	'APPCODE ' + 您的AppCode

方式二：签名认证

参数	类型	说明
Content-type	string	application/json
x-ca-key	string	您的AppKey
x-ca-timestamp	string	时间戳（毫秒）
x-ca-signature	string	签名sign

请求参数（Query）

请求参数（Body）

参数	是否必填	类型	说明
image_base64	必填	string	base64编码的图片文件,像素范围：[15,8192]，小于20M

平台通过已登录用户信息获取当前账号临时 Access Keys、"发起请求" 可能对当前账号发起线上资源操作，请小心操作

简单认证

签名认证

Python

PHP

Java

75 lines

                                                            //main.java
        import com.alibaba.fastjson2.JSON;
        import com.alibaba.fastjson2.JSONObject;
        import org.apache.http.HttpResponse;
        import org.apache.http.client.methods.HttpPost;
        import org.apache.http.entity.StringEntity;
        import org.apache.http.impl.client.CloseableHttpClient;
        import org.apache.http.impl.client.HttpClients;
        import org.apache.http.util.EntityUtils;
        import org.apache.commons.io.FileUtils;
        import java.io.File;
        import java.io.IOException;
        import java.util.HashMap;
        import java.util.Map;
        import java.util.Base64;
                                                        
        public class Main {
                                                        
            public static String get_base64(String path) {
                String b64 = "";
                try {
                    // 使用Commons IO简化文件读取
                    byte[] content = FileUtils.readFileToByteArray(new File(path));
                    // 使用JDK自带的Base64
                    b64 = Base64.getEncoder().encodeToString(content);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                return b64;
            }
                                                        
            public static void main(String[] args) {
                String url = "https://ocr-api.shiliuai.com/api/bank_card_ocr/v1"; // 请求接口
                String appcode = "你的APPCODE";
                String imgFile = "本地图片路径";
                                                        
                Map headers = new HashMap<>();
                headers.put("Authorization", "APPCODE " + appcode);
                headers.put("Content-Type", "application/json");
                                                        
                // 请求体
                JSONObject requestObj = new JSONObject();
                requestObj.put("image_base64", get_base64(imgFile));
                String bodys = requestObj.toString();
                                                        
                try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
                    // 创建POST请求
                    HttpPost httpPost = new HttpPost(url);
                                                                    
                    // 设置请求头
                    for (Map.Entry entry : headers.entrySet()) {
                        httpPost.addHeader(entry.getKey(), entry.getValue());
                    }
                                                                    
                    // 设置请求体
                    StringEntity entity = new StringEntity(bodys, "UTF-8");
                    httpPost.setEntity(entity);
                                                                    
                    // 执行请求
                    HttpResponse response = httpClient.execute(httpPost);
                                                                    
                    int stat = response.getStatusLine().getStatusCode();
                    if (stat != 200) {
                        System.out.println("Http code: " + stat);
                        return;
                    }
                                                        
                    String res = EntityUtils.toString(response.getEntity());
                    JSONObject res_obj = JSON.parseObject(res);
                                                        
                    System.out.println(res_obj.toJSONString());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
                                                    
                                                
44 lines

                                                            //图片转base64
        function get_base64($path){
            if($fp = fopen($path, "rb", 0)) {
                $binary = fread($fp, filesize($path)); // 文件读取
                fclose($fp);
                $b64 = base64_encode($binary); // 转base64
            }else{
                $b64="";
                printf("%s 文件不存在", $path);
            }
            return $b64;
        }
    
        $url = "https://ocr-api.shiliuai.com/api/bank_card_ocr/v1";
        $appcode = "你的appcode";
        $img_path = "图片路径";
        $method = "POST";
    
        //请求头
        $headers = array();
        array_push($headers, "Authorization:APPCODE " . $appcode);
        array_push($headers, "Content-Type:application/json");
    
        //请求体
        $b64 = get_base64($img_path);
        $data = array(
            "image_base64" => $b64
        );
        $post_data = json_encode($data);
    
        //请求
        $curl = curl_init();
        curl_setopt($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);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
    
        $result = curl_exec($curl);
        var_dump($result);
                                                    
                                                    
                                                
36 lines

                                                            # -*- coding: utf-8 -*-
        import requests
        import base64
        import json
        
        # 请求接口
        URL = "https://ocr-api.shiliuai.com/api/bank_card_ocr/v1"
        
        # 图片转base64
        def get_base64(file_path):
            with open(file_path, 'rb') as f:
                data = f.read()
            b64 = base64.b64encode(data).decode('utf8')
            return b64
        
        
        def demo(appcode, file_path):
            # 请求头
            headers = {
                'Authorization': 'APPCODE %s' % appcode,
                'Content-Type': 'application/json'
            }
        
            # 请求体
            b64 = get_base64(file_path)
            data = {"image_base64": b64}
        
            # 请求
            response = requests.post(url=URL, headers=headers, json=data)
            content = json.loads(response.content)
            print(content)
        
        if __name__=="__main__":
            appcode = "你的APPCODE"
            file_path = "本地图片路径"
            demo(appcode, file_path)         
                                                    
                                                
78 lines

                                                            using System.Text;
        using Newtonsoft.Json;
        using Newtonsoft.Json.Linq;

        namespace MyCSharpApp
        {
            public class Program
            {
                public static string GetBase64(string path)
                {
                    string b64 = "";
                    try
                    {
                        // 读取文件内容
                        byte[] content = File.ReadAllBytes(path);
                        // 转换为Base64
                        b64 = Convert.ToBase64String(content);
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(e.Message);
                    }
                    return b64;
                }

                public static async Task Main(string[] args)
                {
                    string url = "https://ocr-api.shiliuai.com/api/bank_card_ocr/v1"; // 请求接口
                    string appcode = "你的APPCODE";
                    string imgFile = "本地图片路径";

                    // 设置请求头 
                    Dictionary headers = new Dictionary
                    {
                        { "Authorization", "APPCODE " + appcode }
                        // Content-Type 将在创建 StringContent 时设置
                    };

                    // 请求体
                    JObject requestObj = new JObject();
                    requestObj["image_base64"] = GetBase64(imgFile);
                    string body = requestObj.ToString();

                    try
                    {
                        using (HttpClient client = new HttpClient())
                        {
                            // 设置请求头
                            foreach (var header in headers)
                            {
                                client.DefaultRequestHeaders.Add(header.Key, header.Value);
                            }

                            // 创建请求内容 
                            StringContent content = new StringContent(body, Encoding.UTF8, "application/json");

                            // 发送请求并获取响应
                            HttpResponseMessage response = await client.PostAsync(url, content);

                            if (!response.IsSuccessStatusCode)
                            {
                                Console.WriteLine($"Http code: {(int)response.StatusCode}");
                                return;
                            }

                            // 读取响应内容
                            string responseContent = await response.Content.ReadAsStringAsync();
                            JObject resObj = JObject.Parse(responseContent);

                            Console.WriteLine(resObj.ToString(Formatting.Indented));
                        }
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(e.Message);
                    }
                }
            }
        }
         
                                                    
                                                
48 lines

                                                            import requests
        import base64
        import json
        import hashlib
        import time
        
        # 请求接口
        URL = "https://ocr-api.shiliuai.com/api/bank_card_ocr/v1"
        
        # 图片转base64
        def get_base64(file_path):
            with open(file_path, 'rb') as f:
                data = f.read()
            b64 = base64.b64encode(data).decode('utf8')
            return b64
        
        # md5
        def md5(s):
            return hashlib.md5(s.encode("utf8")).hexdigest()
        
        
        def demo(app_key, app_secret, file_path):
            # 请求头
            t = int(time.time() * 1000)
            s = "%s%d%s" % (app_key, t, app_secret)
            sign = md5(s)
            headers = {'x-ca-key': app_key,
                    'x-ca-timestamp': t,
                    'x-ca-signature': sign,
                    "Content-Type": "application/json"}
        
        
            # 请求体
            b64 = get_base64(file_path)
            data = {"image_base64": b64}
        
        
            # 请求
            response = requests.post(url=URL, headers=headers, json=data)
            content = json.loads(response.content)
            print(content)
        
        if __name__=="__main__":
            app_key = "你的APP_KEY"
            app_secret = "你的APP_SECRET"
            file_path = "本地图片路径"
        
            demo(app_key, app_secret, file_path)
                                                        
                                                    
                                                
53 lines

                                                            function get_base64($path){
            if($fp = fopen($path, "rb", 0)) {
                $binary = fread($fp, filesize($path)); // 文件读取
                fclose($fp);
                $b64 = base64_encode($binary); // 转base64
            }else{
                $b64="";
                printf("%s 文件不存在", $path);
            }
            return $b64;
        }
    
        $url = "https://ocr-api.shiliuai.com/api/bank_card_ocr/v1";
        $img_path = "图片路径";
        $method = "POST";
    
    
        //请求头
        $app_key = "你的app_key";
        $app_secret = "你的app_secret";
        $sign_string = $app_key . "&" . $timestamp . "&" . $app_secret;
        $sign = md5($sign_string);
    
        $headers = array();
        array_push($headers, "Content-Type:application/json");
        array_push($headers, "x-ca-key:" . $app_key);
        array_push($headers, "x-ca-timestamp:" . $timestamp);
        array_push($headers, "x-ca-signature:" . $sign);
    
    
        //请求体
        $b64 = get_base64($img_path);
        $data = array(
            "image_base64" => $b64
        );
        $post_data = json_encode($data);
    
    
        //请求
        $curl = curl_init();
        curl_setopt($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);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
    
    
        $result = curl_exec($curl);
        var_dump($result);
                                                    
                                                    
                                                
113 lines

                                                            import com.alibaba.fastjson2.JSON;
        import com.alibaba.fastjson2.JSONObject;
        import org.apache.commons.io.FileUtils;
        import org.apache.http.HttpResponse;
        import org.apache.http.client.methods.HttpPost;
        import org.apache.http.entity.StringEntity;
        import org.apache.http.impl.client.CloseableHttpClient;
        import org.apache.http.impl.client.HttpClients;
        import org.apache.http.util.EntityUtils;
        import java.io.File;
        import java.io.IOException;
        import java.util.HashMap;
        import java.util.Map;
        import java.util.Base64;
        import java.security.MessageDigest;
        import java.security.NoSuchAlgorithmException;

        public class Demo {

            public static String get_base64(String path) {
                String b64="";
                try {
                    File file = new File(path);
                    if (!file.exists()) {
                        System.err.println("文件不存在: " + path);
                        return b64;
                    }
                    // 使用Commons IO简化文件读取
                    byte[] content = FileUtils.readFileToByteArray(file);
                    // 使用JDK自带的Base64
                    b64 = Base64.getEncoder().encodeToString(content);
                } catch (IOException e) {
                    System.err.println("读取文件失败: " + e.getMessage());
                    e.printStackTrace();
                }
                return b64;
            }

            public static String MD5(String input) {
                try {
                    MessageDigest md = MessageDigest.getInstance("MD5");
                    byte[] messageDigest = md.digest(input.getBytes());

                    StringBuilder hexString = new StringBuilder();
                    for (byte b : messageDigest) {
                        String hex = Integer.toHexString(0xff & b);
                        if (hex.length() == 1)
                            hexString.append('0');
                        hexString.append(hex);
                    }

                    return hexString.toString();

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

                return null;
            }

            public static void main(String[] args) {
        String url = "https://ocr-api.shiliuai.com/api/bank_card_ocr/v1"; // 请求接口

        String imgFile = "本地图片路径";

        String app_key = "你的APPKEY";
        String app_secret = "你的APPSECRET";
        String timestamp = System.currentTimeMillis() + "";
        String sign = MD5(app_key + "&" + timestamp + "&" + app_secret);

        Map headers = new HashMap<>();
        headers.put("Content-Type", "application/json");
        headers.put("x-ca-key", app_key);
        headers.put("x-ca-timestamp", timestamp);
        headers.put("x-ca-signature", sign);

        // 请求体
        JSONObject requestObj = new JSONObject();
        requestObj.put("image_base64", get_base64(imgFile));
        String bodys = requestObj.toString();

        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
            // 创建POST请求
            HttpPost httpPost = new HttpPost(url);
            
            // 设置请求头
            for (Map.Entry entry : headers.entrySet()) {
                httpPost.addHeader(entry.getKey(), entry.getValue());
            }
            
            // 设置请求体
            StringEntity entity = new StringEntity(bodys, "UTF-8");
            httpPost.setEntity(entity);
            
            // 执行请求
            HttpResponse response = httpClient.execute(httpPost);
            
            int stat = response.getStatusLine().getStatusCode();
            if (stat != 200) {
                System.out.println("Http code: " + stat);
                System.out.println("Http  " + EntityUtils.toString(response.getEntity()));

                return;
            }

            String res = EntityUtils.toString(response.getEntity());
            JSONObject res_obj = JSON.parseObject(res);

            System.out.println(res_obj.toJSONString());
            } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
                                                    
                                                
111 lines

                                                            using System.Security.Cryptography;
        using System.Text;
        using Newtonsoft.Json;
        using Newtonsoft.Json.Linq;

        namespace MyCSharpApp
        {
            public class Program
            {
                public static string GetBase64(string path)
                {
                    string b64 = "";
                    try
                    {
                        // 读取文件内容
                        byte[] content = File.ReadAllBytes(path);
                        // 转换为Base64
                        b64 = Convert.ToBase64String(content);
                    }
                    catch (Exception e)
                    {
                        Console.Error.WriteLine("读取文件失败: " + e.Message);
                        Console.WriteLine(e.Message);
                    }
                    return b64;
                }

                public static string CalculateMD5(string input)
                {
                    try
                    {
                        // 创建MD5哈希提供程序
                        using (MD5 md5 = MD5.Create())
                        {
                            // 计算输入字符串的哈希值
                            byte[] inputBytes = Encoding.UTF8.GetBytes(input);
                            byte[] hashBytes = md5.ComputeHash(inputBytes);

                            // 将字节数组转换为十六进制字符串
                            StringBuilder sb = new StringBuilder();
                            for (int i = 0; i < hashBytes.Length; i++)
                            {
                                sb.Append(hashBytes[i].ToString("x2"));
                            }
                            return sb.ToString();
                        }
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(e.Message);
                        return string.Empty; // 返回空字符串而不是null
                    }
                }

                public static async Task Main(string[] args)
                {
                    string url = "https://ocr-api.shiliuai.com/api/bank_card_ocr/v1"; // 请求接口
                    string imgFile = "本地图片路径";
                    string app_key = "你的APPKEY";
                    string app_secret = "你的APPSECRET";
                    string timestamp = DateTimeOffset.Now.ToUnixTimeMilliseconds().ToString();
                    string sign = CalculateMD5(app_key + "&" + timestamp + "&" + app_secret);

                    // 设置请求头
                    Dictionary headers = new Dictionary
                    {
                        { "x-ca-key", app_key },
                        { "x-ca-timestamp", timestamp },
                        { "x-ca-signature", sign }
                    };

                    // 请求体
                    JObject requestObj = new JObject();
                    requestObj["image_base64"] = GetBase64(imgFile);
                    string body = requestObj.ToString();
                    try
                    {
                        using (HttpClient client = new HttpClient())
                        {
                            // 设置请求头
                            foreach (var header in headers)
                            {
                                client.DefaultRequestHeaders.Add(header.Key, header.Value);
                            }

                            // 创建请求内容
                            StringContent content = new StringContent(body, Encoding.UTF8, "application/json");

                            // 发送请求并获取响应
                            HttpResponseMessage response = await client.PostAsync(url, content);

                            if (!response.IsSuccessStatusCode)
                            {
                                Console.WriteLine($"Http code: {(int)response.StatusCode}");
                                Console.WriteLine($"Http {await response.Content.ReadAsStringAsync()}");
                                return;
                            }

                            // 读取响应内容
                            string responseContent = await response.Content.ReadAsStringAsync();
                            JObject resObj = JObject.Parse(responseContent);

                            Console.WriteLine(resObj.ToString(Formatting.Indented));
                        }
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(e.Message);
                    }
                }
            }
        }
                                                    
                                                

返回信息

错误码说明

参数	参数类型	说明
code	int	错误码
msg	string	错误信息（英文）
msg_cn	string	错误信息（中文）
success	bool	识别是否成功
request_id	string	唯一请求ID
data	data	识别结果，不同api结果的格式不同

data 成功示例：

data = {

"content":

[

{

"number": "6259198888888888", // string, 银行卡号文字内容

"prob": 0.9999991655349731, // float, [0, 1], 文字内容置信度

"name": "中国邮政储蓄银行股份有限公司", // string，银行名称文字内容

"type": "贷记卡", // string，银行卡类型文字内容

"keypoints": [ // list, 文字区域四个角的位置，以文字的左上角为起点，按顺时针顺序排列

{"x":50, "y":20},

{"x":150, "y":20},

{"x":150, "y":60},

{"x":50, "y":60}

]

......

]

}

data 失败示例：

data = {}

商品介绍

简介

银行卡OCR（API）定义：银行卡OCR实现银行卡正面图片进行精准识别，提取包括银行卡号、发卡行、卡类型、有效期等关键信息。接口稳定，识别速度快，准确率高，减少用户输入成本，有效提高用户的体验。

✅ 支持横版/竖版银行卡识别
✅ 99%识别准确率
✅ 毫秒级响应速度
✅ 支持200+银行识别

典型应用场景

支持各种程序和设备接入，包括小程序、APP、采集设备等，灵活适用于不同应用场景。

金融App集成

用户实名认证时自动提取银行卡信息，减少手动输入错误

银行系统对接

与核心系统集成实现开户资料自动化录入

主要功能

银行卡OCR接口能够精准识别各类银行卡中的关键信息，包括卡号、卡种类、有效期等。其主要功能包括：

1.多类型覆盖：支持横卡、竖卡及银行卡多角度偏斜情况的识别与提取。

2.多银行：支持交通银行、中国工商银行、中国银行、邮政银行等国内大多数银行。

3.卡面多样：支持各种位数、凸字卡面、平面卡面等的识别。

4.超高精度与性能：识别准确率高，识别速度快，响应及时。

商品价格

API类型	价格说明
银行卡OCR API	每次调用消耗一积分
如有问题联系右侧"客服"

错误码	说明
200	成功
400	错误请求，比如参数错误
401	未经授权
403	禁止访问
500	内部错误