How to use JSon data in mvc action and post form data use JQuery ajax

原文连接: http://www.flyear.net/Artical/How-To-Use-JSon-Data-In-MVC-Action-and-post-form-data-use-jquery-ajax

1. Front-End Html:

1. @using (Html.BeginForm("NewComment", "Home", new { area = "Blog" }, FormMethod.Post, new { id = "commentForm" }))
2. {
3.     <hr />
4.     <input id="articalId" type="hidden" value="@Model.Post.PostID" />
5.     <ul>
6.         <li><span>User</span><input id="commenterName" type="text" /></li>
7.         <li><span>Email</span><input id="commenterEmail" type="text" /></li>
8.         <li><span>Site</span><input id="commenterSite" type="text" /></li>
9.         <li><span>Comment Content</span><p>
10.             <textarea id="commenterContent" cols="35" rows="10"></textarea></p>
11.         </li>
12.         <li>
13.             <input id="commentSubmit" type="submit" value="Submit" /></li>
14.     </ul>
15. }

2. Front-End JavaScript:

1. $("#commentForm").submit(function () {
2.             var odata = GetCurrentComment();
3.             if (oldSubmitComment != null || oldSubmitComment != undefined) {
4.                 if (odata.Content == oldSubmitComment.Content) {
5.                     $("#msg").html("<span style=\"color: Red\"><strong>You already submited this comment, please add new content for submit.</strong></span>");
6.                     return false;
7.                 }
8.             }
9.             oldSubmitComment = odata; //Set old submit comment to current submit data
10.             var json_strng = JSON.stringify(odata);
11.             var beforeDate = new Date();
12.  
13.             $.ajax({
14.                 url: $("#commentForm").attr("action"),
15.                 type: 'POST',
16.                 contentType: 'application/json',
17.                 dataType: 'json',
18.                 data: json_strng,
19.                 success: function (result, status) {
20.                     if (result.Success) {
21.                         AppenderNewCommentToEnd(odata);
22.                         var completeDate = new Date();
23.                         $("#msg").html("Your spend <span style=\"color: Red\"><strong>" + (completeDate - beforeDate) + " Milliseconds </strong></span>on this submit, Thanks for your time.");
24.                     }
25.                     else {
26.                         $("#msg").html("<span style=\"color: Red\"><strong>Your submit fauiler, Detail message is:" + json2.ErrorMessage + "</strong></span>");
27.                     }
28.                 }
29.             });
30.             return false;
31.         });

1. function TrArticalComment(articalId, name, email, site, date, content) {
2.         this.PostID = articalId;
3.         this.UserName = name;
4.         this.Email = email;
5.         this.WebAddress = site;
6.         this.Date = date;
7.         this.Content = content;
8.     }
9.     //Page Transfer Model       
10.     function GetCurrentComment() {
11.         var comment = new TrArticalComment(
12.                 $("#articalId").val(),
13.                 $("#commenterName").val(),
14.                 $("#commenterEmail").val(),
15.                 $("#commenterSite").val(),
16.                 new Date(),
17.                 $("#commenterContent").val());
18.         return comment;
19.     }
20.     function AppenderNewCommentToEnd(comment) {
21.         $("<hr/><div class=\"commentHeader\"> <a href='" + comment.WebAddress + "' target=\"_blank\"><span class=\"commentUser\">" + comment.UserName + "</span></a> <span class=\"commonDate\">"
22.                 + comment.Date + "</span></div><div class=\"commonContent\">" + comment.Content + "</div>").appendTo("#newCommentHere");
23.     }

3. Back-End code:

1. [HttpPost]
2.         public JsonResult NewComment(NewCommentDto comment)
3.         {
4.             var pComment = comment.ToPostComment();
5.             PostService.AddComment(pComment.PostID, pComment);
6.             return Json(new { Success = true, Message = "Successfully" });
7.         }

4. Some things need more attentation:

We need add ValueProviderFactories.Factories.Add(new JsonValueProviderFactory()); into Application_Start method in Global.axsx.cs to support Action receive JSon format data.

1. protected void Application_Start()
2.         {
3.             logger.Info("LightBlog log system started.");
4.  
5.             LightBlog.Infrastructure.RepositoryFramework.NHibernateProvider.DataContext.ReCreateDatabase();
6.  
7.             AreaRegistration.RegisterAllAreas();
8.  
9.             RegisterGlobalFilters(GlobalFilters.Filters);
10.             RegisterRoutes(RouteTable.Routes);
11.  
12.             ValueProviderFactories.Factories.Add(new JsonValueProviderFactory());
13.  
14.         }