// GET: Code
/// <summary>
/// 验证码接口
/// </summary>
/// <param name="codeLength">验证码长度</param>
/// <returns></returns>
/// 测试数据：/Code?codeLength=4
public ActionResult Index(int?codeLength = 4)
{
CodeServer codeServer = new CodeServer();
string strCode = codeServer.GetStrCode(codeLength);
Session["Code"] = strCode;
return(File(codeServer.GetCode(strCode).ToArray(), "image/jpeg"));
}
