一、腾讯票据单据识别 Invoice OCR服务介绍

二、开发完整流程

2.1 开通文字识别服务

2.2 创建开发者密钥

2.3 创建项目编写代码集成

using Newtonsoft.Json;

using TencentCloud.Common;
using TencentCloud.Common.Profile;
using TencentCloud.Ocr.V20181119;
using TencentCloud.Ocr.V20181119.Models;

namespace TrainTicketRecognitionDemo
{
    /// <summary>
    /// 火车票查询工具类
    /// </summary>
    public class TrainTicketRecognitionUtils
    {
        public static TrainTicketRecognitionModel GetTicketStr(string imageUrl)
        {
            // 注意密钥妥善保存，避免泄露，可以放入配置文件或者数据库中
            Credential cred = new Credential
            {
                SecretId = "个人SecretId",
                SecretKey = "个人SecretKey"
            };
            // 实例化一个client选项，可选的，没有特殊需求可以跳过
            ClientProfile clientProfile = new ClientProfile();
            // 实例化一个http选项，可选的，没有特殊需求可以跳过
            HttpProfile httpProfile = new HttpProfile();
            httpProfile.Endpoint = ("ocr.tencentcloudapi.com");
            clientProfile.HttpProfile = httpProfile;

            // 实例化要请求产品的client对象,clientProfile是可选的
            OcrClient client = new OcrClient(cred, "ap-beijing", clientProfile);
            // 实例化一个请求对象,每个接口都会对应一个request对象
            TrainTicketOCRRequest req = new TrainTicketOCRRequest();
            req.ImageUrl = imageUrl;
            // 返回的resp是一个TrainTicketOCRResponse的实例，与请求对象对应
            TrainTicketOCRResponse resp = client.TrainTicketOCRSync(req);           
            TrainTicketRecognitionModel trainTicketRecognitionModel = JsonConvert.DeserializeObject<TrainTicketRecognitionModel>(AbstractModel.ToJsonString(resp));
            return trainTicketRecognitionModel;
        }
    }
}

public class TrainTicketRecognitionModel

{
    /// <summary>
    /// 编号
    /// </summary>
    public string TicketNum { get; set; }
    /// <summary>
    /// 出发站
    /// </summary>
    public string StartStation { get; set; }
    /// <summary>
    /// 到达站
    /// </summary>
    public string DestinationStation { get; set; }
    /// <summary>
    /// 出发时间
    /// </summary>
    public string Date { get; set; }
    /// <summary>
    /// 车次
    /// </summary>
    public string TrainNum { get; set; }
    /// <summary>
    /// 座位号
    /// </summary>
    public string Seat { get; set; }
    /// <summary>
    /// 乘车人姓名
    /// </summary>
    public string Name { get; set; }
    /// <summary>
    /// 票价
    /// </summary>
    public string Price { get; set; }
    /// <summary>
    /// 席别
    /// </summary>
    public string SeatCategory { get; set; }
    /// <summary>
    /// 身份证号
    /// </summary>
    public string ID { get; set; }
    /// <summary>
    /// 发票消费类型
    /// </summary>
    public string InvoiceType { get; set; }
    /// <summary>
    /// 序列号
    /// </summary>
    public string SerialNumber { get; set; }
    /// <summary>
    /// 加收票价
    /// </summary>
    public string AdditionalCost { get; set; }
    /// <summary>
    /// 手续费
    /// </summary>
    public string HandlingFee { get; set; }
    /// <summary>
    /// 大写金额（票面有大写金额该字段才有值
    /// </summary>
    public string LegalAmount { get; set; }
    /// <summary>
    /// 售票站
    /// </summary>
    public string TicketStation { get; set; }
    /// <summary>
    /// 原票价（一般有手续费的才有原始票价字段）
    /// </summary>
    public string OriginalPrice { get; set; }
    /// <summary>
    /// 发票类型：火车票、火车票补票、火车票退票凭证
    /// </summary>
    public string InvoiceStyle { get; set; }
    /// <summary>
    /// 收据号码
    /// </summary>
    public string ReceiptNumber { get; set; }
    /// <summary>
    /// 仅供报销使用：1为是，0为否
    /// </summary>
    public string IsReceipt { get; set; }
    /// <summary>
    /// 唯一请求 ID，由服务端生成
    /// </summary>
    public string RequestId { get; set; }
}

 /// <summary>

 ///  查询代码
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void btnSearch_Click(object sender, EventArgs e)
 {
     string url = txtImageUrl.Text;
     if (string.IsNullOrWhiteSpace(url))
     {
         MessageBox.Show("请输入查询车票图片的URL");
     }
     else
     {
         TrainTicketRecognitionModel model = TrainTicketRecognitionUtils.GetTicketStr(url);
         txtStartStation.Text = model.StartStation;
         txtDestinationStation.Text = model.DestinationStation;
         txtDate.Text = model.Date;
         txtTrainNum.Text= model.TrainNum;
         txtPrice.Text = model.Price;
         txtSeat.Text = model.Seat;
         txtSeatCategory.Text = model.SeatCategory;
         txtName.Text = model.Name;
     }
    
 }

三、总结

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