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ArgoZhangdensen2014
ArgoZhang
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densen2014
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feat: add verify vat invoice component (#342)
Co-authored-by: alex chow <zhouchuanglin@gmail.com>
1 parent c21c7d1 commit ca8147d

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Lines changed: 169 additions & 5 deletions

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‎src/Extensions/Components/BootstrapBlazor.BaiduOcr/BootstrapBlazor.BaiduOcr.csproj‎

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@@ -1,7 +1,7 @@
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<Project Sdk="Microsoft.NET.Sdk.Razor">
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<PropertyGroup>
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<Version>7.0.2</Version>
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<Version>7.1.0</Version>
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</PropertyGroup>
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<PropertyGroup>

‎src/Extensions/Components/BootstrapBlazor.BaiduOcr/Models/InvoiceEntity.cs‎

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@@ -32,12 +32,12 @@ public class InvoiceEntity
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/// <summary>
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/// 获得/设置 发票代码
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/// </summary>
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public string? InvoiceCode { get; set; }
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public string InvoiceCode { get; set; } = string.Empty;
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/// <summary>
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/// 获得/设置 发票号码
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/// </summary>
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public string? InvoiceNum { get; set; }
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public string InvoiceNum { get; set; } = string.Empty;
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/// <summary>
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/// 获得/设置 增值税发票左上角标志。 包含：通行费,销项负数、代开、收购、成品油、其他
@@ -47,7 +47,7 @@ public class InvoiceEntity
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/// <summary>
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/// 获得/设置 开票日期
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/// </summary>
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public string? InvoiceDate { get; set; }
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public string InvoiceDate { get; set; } = string.Empty;
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/// <summary>
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/// 获得/设置 机打号码。仅增值税卷票含有此参数

‎src/Extensions/Components/BootstrapBlazor.BaiduOcr/Models/InvoiceVerifyResult.cs‎

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// Copyright (c) Argo Zhang (argo@163.com). All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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// Website: https://www.blazor.zone or https://argozhang.github.io/
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namespace BootstrapBlazor.Components;
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/// <summary>
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/// 发票验证真伪结果实体类
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/// </summary>
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public class InvoiceVerifyResult
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{
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/// <summary>
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/// 获得/设置 机器编号
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/// </summary>
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public string? MachineCode { get; set; }
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/// <summary>
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/// 获得/设置 发票号码
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/// </summary>
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public string? InvoiceNum { get; set; }
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/// <summary>
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/// 获得/设置 开票日期
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/// </summary>
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public string? InvoiceDate { get; set; }
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/// <summary>
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/// 获得/设置 查验结果 查验成功返回 "0001"，查验失败返回对应查验结果错误码
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/// </summary>
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public string? VerifyResult { get; set; }
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/// <summary>
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/// 获得/设置 是否作废（冲红）。Y：已作废；H：已冲红；N：未作废
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/// </summary>
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public string? InvalidSign { get; set; }
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/// <summary>
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/// 获得/设置 发票代码
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/// </summary>
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public string? InvoiceCode { get; set; }
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/// <summary>
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/// 获得/设置 发票种类。即增值税专用发票、增值税电子专用发票、增值税普通发票、增值税普通发票（电子）、增值税普通发票（卷式）、通行费增值税电子普通发票、区块链电子发票、全电发票（专用发票）、全电发票（普通发票）、机动车销售发票、二手车销售发票、货物运输业增值税专用发票
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/// </summary>
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public string? InvoiceType { get; set; }
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/// <summary>
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/// 获得/设置 校验码
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/// </summary>
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public string? CheckCode { get; set; }
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/// <summary>
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/// 获得/设置 查验结果信息。查验成功且发票为真返回 "查验成功发票一致"，查验失败返回对应错误原因
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/// </summary>
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public string? VerifyMessage { get; set; }
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/// <summary>
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/// 获得/设置 发票实例
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/// </summary>
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public InvoiceEntity? Invoice { get; set; }
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}

‎src/Extensions/Components/BootstrapBlazor.BaiduOcr/Services/BaiduOcr.cs‎

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Original file line numberDiff line numberDiff line change
@@ -4,20 +4,25 @@
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using Baidu.Aip.Ocr;
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using Microsoft.Extensions.Options;
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using Newtonsoft.Json.Linq;
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namespace BootstrapBlazor.Components;
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internal class BaiduOcr : IBaiduOcr
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{
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protected IOptionsMonitor<BaiduOcrOption> Options { get; set; }
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protected IHttpClientFactory HttpClientFactory { get; set; }
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/// <summary>
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/// 构造函数
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/// </summary>
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/// <param name="options"></param>
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public BaiduOcr(IOptionsMonitor<BaiduOcrOption> options)
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/// <param name="httpClientFactory"></param>
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public BaiduOcr(IOptionsMonitor<BaiduOcrOption> options, IHttpClientFactory httpClientFactory)
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{
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Options = options;
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HttpClientFactory = httpClientFactory;
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}
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/// <summary>
@@ -58,4 +63,89 @@ public Task<BaiduOcrResult<InvoiceEntity>> CheckVatInvoiceAsync(byte[] image, Ca
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}
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return ret;
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}, token);
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/// <summary>
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/// 获得 Baidu AI AccessToken 方法
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/// </summary>
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/// <returns></returns>
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protected async Task<string> GetAccessToken()
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{
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var client = HttpClientFactory.CreateClient();
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var para = new Dictionary<string, string>()
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{
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{ "grant_type", "client_credentials" },
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{ "client_id", Options.CurrentValue.ApiKey },
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{ "client_secret", Options.CurrentValue.Secret }
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};
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var resp = await client.PostAsync("https://aip.baidubce.com/oauth/2.0/token", new FormUrlEncodedContent(para));
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var ret = await resp.Content.ReadAsStringAsync();
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var doc = JObject.Parse(ret);
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return doc.Value<string>("access_token") ?? string.Empty;
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}
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/// <summary>
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/// 增值税发票验真方法
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/// </summary>
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/// <param name="invoiceCode">发票代码</param>
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/// <param name="invoiceNum">发票号码</param>
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/// <param name="invoiceDate">开票日期格式 YYYYMMDD</param>
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/// <param name="invoiceType">发票种类 增值税专用发票：special_vat_invoice 增值税电子专用发票：elec_special_vat_invoice 增值税普通发票：normal_invoice 增值税普通发票（电子）：elec_normal_invoice 增值税普通发票（卷式）：roll_normal_invoice 通行费增值税电子普通发票：toll_elec_normal_invoice 区块链电子发票（目前仅支持深圳地区）：blockchain_invoice 全电发票（专用发票）：elec_invoice_special 全电发票（普通发票）：elec_invoice_normal 货运运输业增值税专用发票：special_freight_transport_invoice 机动车销售发票：motor_vehicle_invoice 二手车销售发票：used_vehicle_invoice</param>
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/// <param name="checkCode">校验码 后六位</param>
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/// <param name="totalAmount">发票金额</param>
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/// <param name="token"></param>
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/// <returns></returns>
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public Task<BaiduOcrResult<InvoiceVerifyResult>> VerifyInvoiceAsync(string invoiceCode, string invoiceNum, string invoiceDate, string invoiceType, string? checkCode, string? totalAmount, CancellationToken token = default) => Task.Run(async () =>
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{
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var token = await GetAccessToken();
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var url = $"https://aip.baidubce.com/rest/2.0/ocr/v1/vat_invoice_verification?access_token={token}";
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var client = HttpClientFactory.CreateClient();
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// 拼装参数
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var para = new Dictionary<string, string>()
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{
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{ "invoice_code", invoiceCode },
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{ "invoice_num", invoiceNum },
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{ "invoice_date", invoiceDate },
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{ "invoice_type", invoiceType },
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};
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if (!string.IsNullOrEmpty(checkCode))
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{
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para["check_code"] = checkCode;
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}
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if (!string.IsNullOrEmpty(totalAmount))
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{
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para["total_amount"] = totalAmount;
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}
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// 提交数据
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var resp = await client.PostAsync(url, new FormUrlEncodedContent(para));
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var payload = await resp.Content.ReadAsStringAsync();
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var doc = JObject.Parse(payload);
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var ret = new BaiduOcrResult<InvoiceVerifyResult>();
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if (doc.TryGetValue("words_result", out var v))
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{
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ret.Entity = new InvoiceVerifyResult()
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{
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MachineCode = doc.Value<string>("MachineCode"),
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InvoiceNum = doc.Value<string>("InvoiceNum"),
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InvoiceDate = doc.Value<string>("InvoiceDate"),
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VerifyResult = doc.Value<string>("VerifyResult"),
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InvalidSign = doc.Value<string>("InvalidSign"),
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InvoiceCode = doc.Value<string>("InvoiceCode"),
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InvoiceType = doc.Value<string>("InvoiceType"),
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CheckCode = doc.Value<string>("CheckCode"),
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VerifyMessage = doc.Value<string>("VerifyMessage"),
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Invoice = v.ToObject(typeof(InvoiceEntity)) as InvoiceEntity
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};
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}
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else
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{
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ret.ErrorCode = doc.Value<int>("error_code");
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ret.ErrorMessage = doc.Value<string>("error_msg");
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}
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return ret;
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}, token);
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}

‎src/Extensions/Components/BootstrapBlazor.BaiduOcr/Services/IBaiduOcr.cs‎

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@@ -23,4 +23,17 @@ public interface IBaiduOcr
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/// <param name="token"></param>
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/// <returns></returns>
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Task<string> CheckVatInvoiceJsonAsync(byte[] image, CancellationToken token = default);
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/// <summary>
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/// 增值税发票验真方法
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/// </summary>
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/// <param name="invoiceCode">发票代码</param>
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/// <param name="invoiceNum">发票号码</param>
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/// <param name="invoiceDate">开票日期格式 YYYYMMDD</param>
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/// <param name="invoiceType">发票种类 增值税专用发票：special_vat_invoice 增值税电子专用发票：elec_special_vat_invoice 增值税普通发票：normal_invoice 增值税普通发票（电子）：elec_normal_invoice 增值税普通发票（卷式）：roll_normal_invoice 通行费增值税电子普通发票：toll_elec_normal_invoice 区块链电子发票（目前仅支持深圳地区）：blockchain_invoice 全电发票（专用发票）：elec_invoice_special 全电发票（普通发票）：elec_invoice_normal 货运运输业增值税专用发票：special_freight_transport_invoice 机动车销售发票：motor_vehicle_invoice 二手车销售发票：used_vehicle_invoice</param>
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/// <param name="checkCode">校验码</param>
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/// <param name="totalAmount">发票金额</param>
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/// <param name="token"></param>
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/// <returns></returns>
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public Task<BaiduOcrResult<InvoiceVerifyResult>> VerifyInvoiceAsync(string invoiceCode, string invoiceNum, string invoiceDate, string invoiceType, string? checkCode, string? totalAmount, CancellationToken token = default);
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}

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