private static void InitialImageProviders(bool hasSection, VerificationCodeSection section)
{
if (hasSection)
{
//根据给定的Provider类型和提供的节点配置初始化对应的ProviderCollection
ProvidersHelper.InstantiateProviders(section.ImageProviders,ImageProviderCollection,typeof(VerificationCodeImageProvider));
if (
section.DefaultImageProvider.Equals(
section.ElementInformation.Properties["defaultImageProvider"].DefaultValue))
{
if (ImageProviderCollection.Count > 0) imageProvider = ImageProviderCollection[0];
else imageProvider = new LineNoiseVerificationCodeImageProvider();
}
else
{
imageProvider = ImageProviderCollection[section.DefaultImageProvider];
}
if(imageProvider == null) throw new InvalidOperationException("验证码图片配置有误");
}
else if (imageProvider == null)
{
section.ImageProviders.Add(CreateProviderSettings(section.DefaultImageProvider,typeof(LineNoiseVerificationCodeImageProvider)));
ProvidersHelper.InstantiateProviders(section.ImageProviders,ImageProviderCollection,typeof(VerificationCodeImageProvider));
imageProvider = ImageProviderCollection[section.DefaultImageProvider];
}
}
private static void InitializeTextProviders(bool isHasSection, VerificationCodeSection section)
{
if (isHasSection)
{
ProvidersHelper.InstantiateProviders(section.TextProviders, TextProviderCollection,
typeof (VerificationCodeTextProvider));
if (
section.DefaultTextProvider.Equals(
section.ElementInformation.Properties["defaultTextProvider"].DefaultValue))
{
if (TextProviderCollection.Count > 0)
textProvider = TextProviderCollection[0];
else
{
textProvider =
new BasicEnglishVerificationCodeTextProvider(new[] {Color.Black, Color.Red, Color.Brown},
new[]
{
new Font("Times New Roman", 1), new Font("Arial", 1),
new Font("Microsoft Sans Serif", 1)
});
}
}
else
{
textProvider = TextProviderCollection[section.DefaultTextProvider];
}
if (textProvider == null) throw new InvalidOperationException("验证码字符配置出错");
}
else if (textProvider == null)
{
section.TextProviders.Add(CreateProviderSettings(section.DefaultTextProvider,
typeof (BasicEnglishVerificationCodeTextProvider),
new KeyValuePair<string, string>("colors", "Red,Green,Blue,Brown"),
new KeyValuePair<string, string>("fonts", "Times New Roman, Arial, Microsoft Sans Serif")));
ProvidersHelper.InstantiateProviders(section.TextProviders, TextProviderCollection,
typeof (VerificationCodeTextProvider));
textProvider = TextProviderCollection[section.DefaultTextProvider];
}
}
private static void EnsureProviders()
{
VerificationCodeSection verificationCodeSection = (VerificationCodeSection)WebConfigurationManager.GetSection("");
bool hasSection = verificationCodeSection != null;
if (!hasSection) verificationCodeSection = new VerificationCodeSection();
persistenceMode = verificationCodeSection.PersistenceMode;
InitializeTextProviders(hasSection, verificationCodeSection);
InitialImageProviders(hasSection, verificationCodeSection);
ProviderSettingsCollection pc = new ProviderSettingsCollection();
pc.Add(new ProviderSettings("filter", "ShepherdsFramework.Framework.Utilities.Captcha.CrosshatchVerificationCodeFilterProvider,ShepherdsFramework.Framework.Utilities.Captcha"));
ProvidersHelper.InstantiateProviders(pc,FilterProviderCollection,typeof(VerificationCodeFilterProvider));
}
