1. 引用 tessnet2.dll (只有NET2.0版本)

2. 视图页

<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>
      
           主页
      
          
       
<%: ViewData["Message"] %>
    
       
        若要了解有关 ASP.NET MVC 的更多信息，请访问 http://asp.net/mvc。    
       
    
        
    
         添加上传文件    
         
    
          <%--    
          --%>    
         
   
             
        
    
       
      

3.后台代码

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using tessnet2;using System.Drawing;using System.Drawing.Imaging;namespace MvcApplicationAndTesseert2.Controllers{    [HandleError]    public class HomeController : Controller    {        public ActionResult Index()        {            return View();        }        public ActionResult IndexNew()        {            HttpPostedFileBase hf = HttpContext.Request.Files[0];            string path = Server.MapPath("~/image/"+DateTime.Now.ToString("yyyyMMddHHmmss")+".jpg");            hf.SaveAs(path);            //D:\CSharp\TessnetTest\ReCaptcha.jpg是待识别图片在电脑中的路径            Bitmap map = new Bitmap(path);//@"D:\3.png"            tessnet2.Tesseract ocr = new tessnet2.Tesseract();//声明一个OCR类               string txt = "";            List
      
        result = new List
       
        ();            try            {
     //当前识别变量设置：数字与大写字母，这种写法会导致无法识别小写字母，加上小写字母即可                ocr.SetVariable("tessedit_char_whitelist", "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ");                //应用当前语言包。注，Tessnet2是支持多国语的。语言包下载链接：http://code.google.com/p/tesseract-ocr/downloads/list                //D:\CSharp\TessnetTesttessdata是语言包在电脑中的路径                ocr.Init(Server.MapPath("~/tessdata"), "eng", false);                result = ocr.DoOCR(map, Rectangle.Empty);                foreach (tessnet2.Word word in result)                {                    txt += word.Text;                }                Console.WriteLine(txt);                Console.ReadLine();            }            catch (Exception ex)            {            }                     return Content(txt);        }        public ActionResult About()        {            return View();        }    }      }