跟小安要了圖形驗證碼塞進去
今天其實完整看起來還是看不太懂
先記錄一下以後回來看
//View -------------------------------------------------------------------------------------------------
@*這是驗證碼的輸入欄位*@
@Html.TextBoxFor(m => m.ValidateCode, newDictionary<string, object>() { { "maxlength", "5" }, { "style", "width:70%;" } })
@*這是驗證碼的輸出圖片*@
<imgid="valiCode"src="../Account/GetValidateCode"alt="驗證碼"/>
@*這是重新整理驗證碼的圖片*@
<imgsrc="../../Content/themes/base/images/Account/cycle_icon01.png"id="validCodeRefresh"title="重新產生驗證碼"style="cursor:pointer"/>
@*這是顯示驗證碼的檢核*@
<divclass="formalert">@Html.ValidationMessageFor(model => model.ValidateCode)</div>
@*這是重新產生驗證碼的Script*@
<scripttype="text/javascript">
$(document).ready(function () {
$("#validCodeRefresh").click(function () {
$("#valiCode").attr("src","../Account/GetValidateCode?time=" + (new Date()).getTime());
});
$("#validCodeRefresh").hover(function () {
$(this).attr("src", "../../Content/Images/Account/cycle_icon.gif")
},function () {
$(this).attr("src", "../../Content/themes/base/images/Account/cycle_icon01.png")
});
});
</script>
//Controller -------------------------------------------------------------------------------------------------
這是一個新的Action
#regionGetValidateCode
publicActionResult GetValidateCode()
{
ValidateCode vCode = newValidateCode();
string code = vCode.CreateValidateCode(5);
Session["ValidateCode"] = code;
String CodeView = "";
for (int i = 0; i < code.Length; i++)
{
CodeView = CodeView + code[i] + " ";
}
byte[] bytes = vCode.CreateValidateGraphic(CodeView);
return File(bytes, @"image/jpeg");
}
#endregion
//Controller2 -------------------------------------------------------------------------------------------------
要放在[HTTP Post]裡面!!!
#region檢核驗證碼
// 檢誤驗證碼是否過時
if (Session["ValidateCode"] == null)
{
ModelState.AddModelError("","閒置時間過長，請重新輸入");
return View();
}
// 檢誤驗證碼是否正確
if (Session["ValidateCode"].ToString() != validatecode)
{
ModelState.AddModelError("", "驗證碼錯誤，請重新輸入");
return View();
}
#endregion
//model -------------------------------------------------------------------------------------------------
新增一個class
using System;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
namespace Recruitment.Models
{
publicclassValidateCode
{
public ValidateCode()
{
}
publicint MaxLength //設定數字最大長度
{
get { return 10; }
}
publicint MinLength //設定數字最小長度
{
get { return 1; }
}
publicstaticdouble GetImageWidth(int validateNumLength) //設定圖片寬度
{
//return (double)(validateNumLength * 12.0);
return (double)(validateNumLength / 2 * 17.0);
}
publicstaticint GetImageHeight() //設定圖片高度
{
// return 20;
return 26;
}
publicstring CreateValidateCode(int length) //產生驗證碼
{
int[] randMembers = newint[length];
int[] validateNums = newint[length];
string validateNumberStr = "";
int seekSeek = unchecked((int)DateTime.Now.Ticks);
Random seekRand = newRandom(seekSeek);
int beginSeek = (int)seekRand.Next(0, Int32.MaxValue - length * 10000);
int[] seeks = newint[length];
for (int i = 0; i < length; i++)
{
beginSeek += 10000;
seeks[i] = beginSeek;
}
//產生隨機數字
for (int i = 0; i < length; i++)
{
Random rand = newRandom(seeks[i]);
int pownum = 1 * (int)Math.Pow(10, length);
randMembers[i] = rand.Next(pownum, Int32.MaxValue);
}
//讀取隨機數字
for (int i = 0; i < length; i++)
{
string numStr = randMembers[i].ToString();
int numLength = numStr.Length;
Random rand = newRandom();
int numPosition = rand.Next(0, numLength - 1);
validateNums[i] = Int32.Parse(numStr.Substring(numPosition, 1));
}
//產生驗證碼
for (int i = 0; i < length; i++)
{
validateNumberStr += validateNums[i].ToString();
}
return validateNumberStr;
}
publicbyte[] CreateValidateGraphic(string validateCode) //建立驗證碼圖片
{
Bitmap image = newBitmap((int)Math.Ceiling(GetImageWidth(validateCode.Length)), GetImageHeight());
Graphics g = Graphics.FromImage(image);
try
{
//產生隨機數字
Random random = newRandom();
//清空圖片背景色
g.Clear(Color.White);
//畫圖片干擾線
for (int i = 0; i < 25; i++)
{
int x1 = random.Next(image.Width);
int x2 = random.Next(image.Width);
int y1 = random.Next(image.Height);
int y2 = random.Next(image.Height);
g.DrawLine(newPen(Color.Silver), x1, y1, x2, y2);
}
//Font font = new Font("Arial", 12, (FontStyle.Bold | FontStyle.Italic));
Font font = newFont("Arial", 14, (FontStyle.Bold | FontStyle.Italic));
LinearGradientBrush brush = newLinearGradientBrush(newRectangle(0, 0, image.Width, image.Height),
Color.Blue, Color.DarkRed, 1.2f, true);
g.DrawString(validateCode, font, brush, 3, 2);
//畫圖片前景干擾線
for (int i = 0; i < 100; i++)
{
int x = random.Next(image.Width);
int y = random.Next(image.Height);
image.SetPixel(x, y, Color.FromArgb(random.Next()));
}
//畫圖片邊框線
g.DrawRectangle(newPen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);
//儲存圖片數據
MemoryStream stream = newMemoryStream();
image.Save(stream, ImageFormat.Jpeg);
//輸出圖片
return stream.ToArray();
}
finally
{
g.Dispose();
image.Dispose();
}
}
}
}
網路參考資料
http://www.cnblogs.com/jianjialin/archive/2009/12/16/1625780.html
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