ASP.NET MVC 使用AderTemplateEngine模板引擎进行视图显示
1. 创建ArtTemplateViewLocator视图文件定位类，代码如下：
namespace ArtLib
{
class ArtTemplateViewLocator : ViewLocator
{
public ArtTemplateViewLocator()
{
base.ViewLocationFormats = new string[] { “~/Views/{1}/{0}.htm”,
“~/Views/{1}/{0}.html”,
“~/Views/Shared/{0}.htm”,
“~/Views/Shared/{0}.html”
};
base.MasterLocationFormats = new string[] { “” };
}
}
}
2. 创建VariableResolver类用于AdrTemplate模板视图解析，并注册自定义组件TagList，代码如下：
namespace ArtLib
{
public static class VariableResolver
{
public static object ArtTemplateResolve(string filePath,IDictionary viewData)
{
//初始化模板引擎
TemplateManager template1 = TemplateManager.FromFile(filePath);
//设置模板数据
template1.SetValue(“ViewData”, viewData);
//注册自定义的标签
template1.RegisterCustomTag(“list”, new TagList());
return template1.Process();
}
}
}
3. 创建ArtTemplateViewEngine类用于处理视图请求，并赋予ViewData给模板引擎，代码如下：
IViewLocator _viewLocator = null;
public IViewLocator ViewLocator
{
get
{
if (this._viewLocator == null)
{
this._viewLocator = new ArtTemplateViewLocator();
}
return this._viewLocator;
}
set
{
this._viewLocator = value;
}
}
public string TemplatePath { get; set; }
#region IViewEngine 成员
public void RenderView(ViewContext viewContext)
{
string viewLocation = ViewLocator.GetViewLocation(viewContext, viewContext.ViewName);
if (string.IsNullOrEmpty(viewLocation))
{
throw new InvalidOperationException(string.Format(“View {0} could not be found.”, viewContext.ViewName));
}
string viewPath = HttpContext.Current.Request.MapPath(viewLocation);
//以下为模板解析
string viewTemplate = VariableResolver.ArtTemplateResolve(viewPath, viewContext.ViewData) as string;
HttpContext.Current.Response.Write(viewTemplate);
}
#endregion
4. 创建ArtTemplateControllerFactory类，用于Golbal.asax进行视图绑定,代码如下：
namespace ArtLib
{
public class ArtTemplateControllerFactory : DefaultControllerFactory
{
protected override IController CreateController(RequestContext requestContext, string controllerName)
{
Controller controller = (Controller)base.CreateController(requestContext, controllerName);
controller.ViewEngine = new ArtTemplateViewEngine();//修改默认的视图引擎为我们刚才创建的视图引擎
return controller;
}
}
}
5. 创建自定义的模板标签类：TagList.cs用于显示数据列表，代码如下：
namespace ArtLib
{
public class TagList : ITagHandler
{
#region ITagHandler 成员
public void TagBeginProcess(TemplateManager manager, Ader.TemplateEngine.Parser.AST.Tag tag, ref bool processInnerElements, ref bool captureInnerContent)
{
processInnerElements = true;
captureInnerContent = true;
}
public void TagEndProcess(TemplateManager manager, Ader.TemplateEngine.Parser.AST.Tag tag, string innerContent)
{
Expression exp;
exp = tag.AttributeValue(“pageSize”);
if (exp == null)
throw new Exception(“Missing attribute: pageSize”);
string pageSize = manager.EvalExpression(exp).ToString();
exp = tag.AttributeValue(“currentPage”);
if (exp == null)
throw new Exception(“Missing attribute: currentPage”);
string currentPage = manager.EvalExpression(exp).ToString();
Business business = new BusinessLogic();
List<InformationSimple> list = new List<InformationSimple>();
if (string.IsNullOrEmpty(pageSize))
{
list = business.Select<InformationSimple>();
}
else
{
Page page = new Page();
page.PageSize = Convert.ToInt32(pageSize);
page.CurrentPage = Convert.ToInt32(currentPage);
list = business.SelectByPage<InformationSimple>(ref page);
}
String html = “”;
foreach (InformationSimple info in list)
{
html = html + “<tr><td>” + info.InfoTitle + “</td></tr>”;
}
html = “<table>” + html + “</table>”;
manager.WriteValue(html);
}
#endregion
}
6. 修改ASP.NET MVC的测试项目的Global.asax文件的Application_Start()方法，加入自定义控制器工厂类：ArtTemplateControllerFactory，代码如下：
protected void Application_Start()
{
ControllerBuilder.Current.SetControllerFactory(typeof(ArtTemplateControllerFactory));
RegisterRoutes(RouteTable.Routes);
}
7. 创建模板文件Views/Home/Index.htm，代码如下：
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>
<html xmlns=”http://www.w3.org/1999/xhtml” >
<head>
<title></title>
</head>
<body>
<ad:list pageSize=”10″ currentPage=”1″></ad:list>
#ViewData["Title"]#
</body>
</html>