1035570: Getting Started: Web API for Perform OCR

Web API/Web-API-Project.slnx

@@ -0,0 +1,3 @@
+<Solution>
+  <Project Path="Web-API-Project/Web-API-Project.csproj" />
+</Solution>

Web API/Web-API-Project/Controllers/PdfController.cs

@@ -0,0 +1,43 @@
+using Microsoft.AspNetCore.Mvc;
+using Syncfusion.Drawing;
+using Syncfusion.OCRProcessor;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Parsing;
+using System.Diagnostics;
+
+namespace Web_API_Project.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class PdfController : ControllerBase
+    {
+
+        private readonly ILogger<PdfController> _logger;
+
+        public PdfController(ILogger<PdfController> logger)
+        {
+            _logger = logger;
+        }
+
+        [HttpGet("/api/Pdf")]
+        public IActionResult ConvertOCR()
+        {
+            using (OCRProcessor processor = new OCRProcessor())
+            {
+                FileStream fileStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
+                //Load an existing PDF document.
+                PdfLoadedDocument document = new PdfLoadedDocument(fileStream);
+                //Set OCR language.
+                processor.Settings.Language = Languages.English;
+                //Perform OCR with input document and tessdata (Language packs).
+                processor.PerformOCR(document);
+                //Create memory stream.
+                MemoryStream stream = new MemoryStream();
+                //Save the document to memory stream.
+                document.Save(stream);
+                stream.Position = 0;
+                return File(stream, "application/pdf", "Output.pdf");
+            }
+        }
+    }
+}

Web API/Web-API-Project/Controllers/WeatherForecastController.cs

@@ -0,0 +1,21 @@
+using Microsoft.AspNetCore.Mvc;
+using Syncfusion.Drawing;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Graphics;
+using Syncfusion.Pdf.Grid;
+
+namespace Web_API_Project.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class WeatherForecastController : ControllerBase
+    {
+
+        private readonly ILogger<WeatherForecastController> _logger;
+
+        public WeatherForecastController(ILogger<WeatherForecastController> logger)
+        {
+            _logger = logger;
+        }
+    }
+}

Web API/Web-API-Project/Program.cs

@@ -0,0 +1,24 @@
+var builder = WebApplication.CreateBuilder(args);
+// Add services to the container.
+
+builder.Services.AddControllers();
+// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseHttpsRedirection();
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Run();

Web API/Web-API-Project/Properties/launchSettings.json

@@ -0,0 +1,41 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:9493",
+      "sslPort": 44373
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "http://localhost:5288",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "https://localhost:7289;http://localhost:5288",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

Web API/Web-API-Project/WeatherForecast.cs

@@ -0,0 +1,13 @@
+namespace Web_API_Project
+{
+    public class WeatherForecast
+    {
+        public DateOnly Date { get; set; }
+
+        public int TemperatureC { get; set; }
+
+        public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
+
+        public string? Summary { get; set; }
+    }
+}

Web API/Web-API-Project/Web-API-Project.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <RootNamespace>Web_API_Project</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.6.2" />
+    <PackageReference Include="Syncfusion.PDF.OCR.Net.Core" Version="*" />
+  </ItemGroup>
+
+</Project>

Web API/Web-API-Project/Web-API-Project.csproj.user

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ActiveDebugProfile>https</ActiveDebugProfile>
+  </PropertyGroup>
+</Project>

Web API/Web-API-Project/Web-API-Project.http

@@ -0,0 +1,6 @@
+@Web_API_Project_HostAddress = http://localhost:5288
+
+GET {{Web_API_Project_HostAddress}}/weatherforecast/
+Accept: application/json
+
+###

Web API/Web-API-Project/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

Web API/Web-API-Project/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}