C# 调用百度API批量识别发票，并存到EXCEL

![在这里插入图片描述](https://i-blog.csdnimg.cn/direct/f406f2185184456daa9ba7829c26138d.png#pic_center)using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using System.IO;
using RestSharp;//依赖版本106.15.0 https://www.nuget.org/packages/RestSharp/106.15.0
using Newtonsoft.Json;
using IniParser;
using IniParser.Model; //https://www.nuget.org/packages/Newtonsoft.Jsonnamespace 发票识别
{public class rest{public string str1;public string str2;private void sstname(){var parser = new FileIniDataParser();string iniFilePath = "config.ini";try{IniData data = parser.ReadFile(iniFilePath);string sectionName = "Apidate"; // 替换为你的节名string keyName = "AKEY"; // 替换为你的键名string keysName = "SKEY"; // 替换为你的键名// 获取特定节和键的值string value = data[sectionName][keyName];string value1 = data[sectionName][keysName];str1 = value;str2 = value1;}catch (Exception ex){//Console.WriteLine("Error reading INI file: " + ex.Message);}}//string API_KEY = str1.ToString();//string SECRET_KEY = str2;public static string StrPanth(string pathname){var client = new RestClient($"https://aip.baidubce.com/rest/2.0/ocr/v1/vat_invoice?access_token={GetAccessToken()}");client.Timeout = -1;var request = new RestRequest(Method.POST);request.AddHeader("Content-Type", "application/x-www-form-urlencoded");request.AddHeader("Accept", "application/json");// pdf_file 可以通过 GetFileBase64Content('C:\fakepath\2491816599   00003.PDF') 方法获取var str = GetFileContentAsBase64(pathname);request.AddParameter("pdf_file", str);request.AddParameter("seal_tag", "false");IRestResponse response = client.Execute(request);Thread.Sleep(200);return response.Content;//return result;}static string GetAccessToken(){var parser = new FileIniDataParser();string iniFilePath = "config.ini";IniData data = parser.ReadFile(iniFilePath);string sectionName = "Apidate"; // 替换为你的节名string keyName = "AKEY"; // 替换为你的键名string keysName = "SKEY"; // 替换为你的键名// 获取特定节和键的值string value = data[sectionName][keyName];string value1 = data[sectionName][keysName];var client = new RestClient($"https://aip.baidubce.com/oauth/2.0/token");client.Timeout = -1;var request = new RestRequest(Method.POST);request.AddParameter("grant_type", "client_credentials");request.AddParameter("client_id", value);request.AddParameter("client_secret", value1);IRestResponse response = client.Execute(request);//Console.WriteLine(response.Content);var result = JsonConvert.DeserializeObject<dynamic>(response.Content);return result.access_token.ToString();}static string GetFileContentAsBase64(string path){using (FileStream filestream = new FileStream(path, FileMode.Open)){byte[] arr = new byte[filestream.Length];filestream.Read(arr, 0, (int)filestream.Length);string base64 = Convert.ToBase64String(arr);return base64;}}}
}