NVelocity 和Razor 模板引擎小Demo, WebForm模板引擎求教
我想用asp.net webform 做个模板引擎的demo，目前用NVelocity 和Razor 各做了个小demo。
首先来看下NVelocity。
NVelocity模板文件
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <title>NVelocity Demo</title>
5 <link href="../Css/demo.css" rel="stylesheet" />
6 <link href="../Css/common.css" rel="stylesheet" />
7 </head>
8 <body>
9 <form action="ParseVM.aspx" method="POST">
10 <div class="query-form">
11 当前时间:$Now
12 <br />
13 <table>
14 <tr>
15 <td>新闻ID:<input type="text" name="searchID" class="text" value="" /></td>
16 <td><input type="submit" name="submit" value="查询"></td>
17 </tr>
18 </table>
19 </div>
20 </form>
21 <br>
22 <h2>新闻列表</h2>
23 <div class="Artical-list">
24 #foreach($c in $Articles)
25 #beforeall
26 <table>
27 <tr class="list-header">
28 <td>ID</td>
29 <td>标题</td>
30 <td>类别</td>
31 <td>发布时间</td>
32 </tr>
33 #odd
34 <tr class="list-odd">
35 #even
36 <tr class="list-even">
37 #each
38 #set ( $NewID = $c.ID +0 )
39 <td>0$NewID</td>
40 <td><a href="#">$c.Title</a></td>
41 <td>#if($c.Category=1)国内新闻
42 #elseif($c.Category=2)国际新闻
43 #else 其他#end</td>
44 <td>$c.PulishTime.ToString("yyyy-MM-dd")</td>
45 #after
46 </tr>
47 #afterall
48 </table>
49 #nodata
50 No contacts found!
51 #end
52 </div>
53 </body>
54 </html>
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <title>NVelocity Demo</title>
5 <link href="../Css/demo.css" rel="stylesheet" />
6 <link href="../Css/common.css" rel="stylesheet" />
7 </head>
8 <body>
9 <form action="ParseVM.aspx" method="POST">
10 <div class="query-form">
11 当前时间:$Now
12 <br />
13 <table>
14 <tr>
15 <td>新闻ID:<input type="text" name="searchID" class="text" value="" /></td>
16 <td><input type="submit" name="submit" value="查询"></td>
17 </tr>
18 </table>
19 </div>
20 </form>
21 <br>
22 <h2>新闻列表</h2>
23 <div class="Artical-list">
24 #foreach($c in $Articles)
25 #beforeall
26 <table>
27 <tr class="list-header">
28 <td>ID</td>
29 <td>标题</td>
30 <td>类别</td>
31 <td>发布时间</td>
32 </tr>
33 #odd
34 <tr class="list-odd">
35 #even
36 <tr class="list-even">
37 #each
38 #set ( $NewID = $c.ID +0 )
39 <td>0$NewID</td>
40 <td><a href="#">$c.Title</a></td>
41 <td>#if($c.Category=1)国内新闻
42 #elseif($c.Category=2)国际新闻
43 #else 其他#end</td>
44 <td>$c.PulishTime.ToString("yyyy-MM-dd")</td>
45 #after
46 </tr>
47 #afterall
48 </table>
49 #nodata
50 No contacts found!
51 #end
52 </div>
53 </body>
54 </html>
加载和显示模板
1 public partial class ParseVM : System.Web.UI.Page
2 {
3 protected void Page_Load(object sender, EventArgs e)
4 {
5 VelocityEngine engine = new VelocityEngine();
6
7 ExtendedProperties prop = new ExtendedProperties();
8 //定义模板加载根路径
9 prop.AddProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, Server.MapPath("~/"));
10 prop.AddProperty(RuntimeConstants.ENCODING_DEFAULT, "utf-8");
11 prop.AddProperty(RuntimeConstants.FILE_RESOURCE_LOADER_CACHE, true);
12 engine.Init(prop);
13
14 Template template = engine.GetTemplate("Template/demo.vm");
15 VelocityContext context = new VelocityContext();
16
17 var list = Article.GetArticleList();
18 string searchID = Request.Form["searchID"];
19 int id = 0;
20
21 if (searchID != null && int.TryParse(searchID, out id)) {
22 context.Put("Articles", list.Where(p => p.ID == id));
23 }
24 else {
25 context.Put("Articles", list);
26 }
27
28 context.Put("Now", DateTime.Now);
29
30 template.Merge(context, this.Response.Output);
31 }
32
33
34 }
2 {
3 protected void Page_Load(object sender, EventArgs e)
4 {
5 VelocityEngine engine = new VelocityEngine();
6
7 ExtendedProperties prop = new ExtendedProperties();
8 //定义模板加载根路径
9 prop.AddProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, Server.MapPath("~/"));
10 prop.AddProperty(RuntimeConstants.ENCODING_DEFAULT, "utf-8");
11 prop.AddProperty(RuntimeConstants.FILE_RESOURCE_LOADER_CACHE, true);
12 engine.Init(prop);
13
14 Template template = engine.GetTemplate("Template/demo.vm");
15 VelocityContext context = new VelocityContext();
16
17 var list = Article.GetArticleList();
18 string searchID = Request.Form["searchID"];
19 int id = 0;
20
21 if (searchID != null && int.TryParse(searchID, out id)) {
22 context.Put("Articles", list.Where(p => p.ID == id));
23 }
24 else {
25 context.Put("Articles", list);
26 }
27
28 context.Put("Now", DateTime.Now);
29
30 template.Merge(context, this.Response.Output);
31 }
32
33
34 }
然后看下 Razor。
Razor模板文件
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <title>Razor Demo</title>
5 <link href="../Css/demo.css" rel="stylesheet" />
6 <link href="../Css/common.css" rel="stylesheet" />
7 </head>
8 <body>
9 <form action="ParseRazor.aspx" method="POST">
10 <div class="query-form">
11 当前时间:<%= DateTime.Now %>
12 <br />
13 <table>
14 <tr>
15 <td>新闻ID:<input type="text" name="searchID" class="text" value="" /></td>
16 <td>
17 <input type="submit" name="submit" value="查询"></td>
18 </tr>
19 </table>
20 </div>
21 </form>
22 <br>
23 <h2>
24 新闻列表</h2>
25 <div class="Artical-list">
26 <table>
27 <tr class="list-header">
28 <td>ID</td>
29 <td>标题</td>
30 <td>类别</td>
31 <td>发布时间</td>
32 </tr>
33 @for (int i = 0; i < @Model.Count; i++) {
34 var article = @Model[i];
35 if (i % 2 == 1) {
36 @:<tr class="list-odd">
37 }
38 else {
39 @:<tr class="list-even">
40 }
41
42 <td>0@(article.ID)</td>
43 <td><a href="#">@article.Title</a></td>
44 <td>@if (article.Category == 1) {
45 @:国内新闻
46 }
47 else if (article.Category == 2) {
48 @:国际新闻
49 }
50 else {
51 @:其他
52 }
53 </td>
54 <td>@article.PulishTime.ToString("yyyy-MM-dd")</td>
55 }
56 </:tr>
57 </table>
58 </div>
59 </body>
60 </html>
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <title>Razor Demo</title>
5 <link href="../Css/demo.css" rel="stylesheet" />
6 <link href="../Css/common.css" rel="stylesheet" />
7 </head>
8 <body>
9 <form action="ParseRazor.aspx" method="POST">
10 <div class="query-form">
11 当前时间:<%= DateTime.Now %>
12 <br />
13 <table>
14 <tr>
15 <td>新闻ID:<input type="text" name="searchID" class="text" value="" /></td>
16 <td>
17 <input type="submit" name="submit" value="查询"></td>
18 </tr>
19 </table>
20 </div>
21 </form>
22 <br>
23 <h2>
24 新闻列表</h2>
25 <div class="Artical-list">
26 <table>
27 <tr class="list-header">
28 <td>ID</td>
29 <td>标题</td>
30 <td>类别</td>
31 <td>发布时间</td>
32 </tr>
33 @for (int i = 0; i < @Model.Count; i++) {
34 var article = @Model[i];
35 if (i % 2 == 1) {
36 @:<tr class="list-odd">
37 }
38 else {
39 @:<tr class="list-even">
40 }
41
42 <td>0@(article.ID)</td>
43 <td><a href="#">@article.Title</a></td>
44 <td>@if (article.Category == 1) {
45 @:国内新闻
46 }
47 else if (article.Category == 2) {
48 @:国际新闻
49 }
50 else {
51 @:其他
52 }
53 </td>
54 <td>@article.PulishTime.ToString("yyyy-MM-dd")</td>
55 }
56 </:tr>
57 </table>
58 </div>
59 </body>
60 </html>
加载和显示模板
1 public partial class ParseRazor : System.Web.UI.Page
2 {
3 protected void Page_Load(object sender, EventArgs e)
4 {
5 //模板文件虚拟目录
6 var path = System.IO.Path.Combine(Request.ApplicationPath, "/Template/demo.cshtml");
7 var type = BuildManager.GetCompiledType(path);
8 var script = Activator.CreateInstance(type) as System.Web.WebPages.WebPage;
9
10
11 var model = Article.GetArticleList();
12 string searchID = Request.Form["searchID"];
13 int id = 0;
14
15 var stringWriter = new StringWriter();
16 if (searchID != null && int.TryParse(searchID, out id)) {
17 script.ExecutePageHierarchy(new WebPageContext(
18 new HttpContextWrapper(HttpContext.Current), null, model.Where(p => p.ID == id).ToList()
19 ), stringWriter);
20 }
21 else {
22
23 script.ExecutePageHierarchy(new WebPageContext(
24 new HttpContextWrapper(HttpContext.Current), null, model
25 ),stringWriter );
26
27 }
28
29 Response.Write(stringWriter);
30
31 }
32
33 }
2 {
3 protected void Page_Load(object sender, EventArgs e)
4 {
5 //模板文件虚拟目录
6 var path = System.IO.Path.Combine(Request.ApplicationPath, "/Template/demo.cshtml");
7 var type = BuildManager.GetCompiledType(path);
8 var script = Activator.CreateInstance(type) as System.Web.WebPages.WebPage;
9
10
11 var model = Article.GetArticleList();
12 string searchID = Request.Form["searchID"];
13 int id = 0;
14
15 var stringWriter = new StringWriter();
16 if (searchID != null && int.TryParse(searchID, out id)) {
17 script.ExecutePageHierarchy(new WebPageContext(
18 new HttpContextWrapper(HttpContext.Current), null, model.Where(p => p.ID == id).ToList()
19 ), stringWriter);
20 }
21 else {
22
23 script.ExecutePageHierarchy(new WebPageContext(
24 new HttpContextWrapper(HttpContext.Current), null, model
25 ),stringWriter );
26
27 }
28
29 Response.Write(stringWriter);
30
31 }
32
33 }
像NVelocity的话可以通过 context.Put（） 方法来输出多个变量，但使用Razor的话，如何添加多个变量在前台显示呢？
下面想试试 webform风格的模板，用WebForm自身的引擎。
但还不知道如何下手，大家能否给点建议？
