0
我试图写一个小例子使用Jstree &查询创建树（新版本提交）在ASP.Net 3.5 & MVC 2.0。我必须在这些技术中做到这一点。
当我尝试以JSON格式加载数据树不加载。它只显示一个java脚本对话框（错误/未知）并显示“正在加载...”。而已。
你能帮我看一下所附的完整解决方案吗？
如果您在MVC中有任何工作解决方案& JSON使用json，jquery，jstree加载/删除/重命名/创建功能以供参考，请分享一致。
代码： 我Index.aspx的视图：
<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Home Page
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2><%= Html.Encode(ViewData["Message"]) %></h2>
<p>
To learn more about ASP.NET MVC visit <a href="http://asp.net/mvc" title="ASP.NET MVC Website">http://asp.net/mvc</a>.
</p>
<script src="../../Scripts/jquery-1.6.1.min.js" type="text/javascript"></script>
<script src="../../Scripts/jquery.jstree.js" type="text/javascript"></script>
<script src="../../Scripts/MicrosoftAjax.js" type="text/javascript"></script>
<script type="text/javascript" language="javascript">
var GetStudentsURL = '<%= Url.Action("GetTreeData", "Home")%>';
//alert(GetStudentsURL);
function OnGetNodes(n) {
//basically, these are the parameters to be passed to the server code [they MUST match exaclty, casing and all]
var obj = {
id: n.attr ? n.attr("id") : "0"
}
return Sys.Serialization.JavaScriptSerializer.serialize(obj);
}
function OnNodesRetrievedSuccess(data, textstatus, xhr) {
//the ".d" is a security feature, annoying, but necessary
return Sys.Serialization.JavaScriptSerializer.deserialize(data.d);
}
function OnNodesRetrievedError(xhr, textstatus, errorThrown) {
alert(errorThrown);
//document.location = "/MyErrorPage.aspx?errMsg="+errorThrown;
}
$(function() {
$("#treeview").jstree({
plugins: ["themes", "json_data", "checkbox", "crrm"],
json_data: {
ajax: {
url: GetStudentsURL,
async: true,
contentType: "application/json; charset=utf-8",
dataType: "text json",
//dataType: "text json",
type: "POST",
data: function (n) {
//alert(n);
return OnGetNodes(n);
},
success: function (data, textstatus, xhr) {
//alert(data);
//alert(textstatus);
//alert(xhr);
return OnNodesRetrievedSuccess(data, textstatus, xhr)
},
error: function (xhr, textstatus, errorThrown) {
//alert(errorThrown);
//alert(textstatus);
//alert(xhr);
OnNodesRetrievedError(xhr, textstatus, errorThrown)
}
}
}
})
});
</script>
<div id="treeview">
</div>
</asp:Content>
我的HomeController”
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Script.Serialization;
using System.Web.Script.Services;
using jsTreeDemo.Models;
namespace MyJSTreeDemo.Controllers
{
[HandleError]
public class HomeController : Controller
{
public ActionResult Index()
{
ViewData["Message"] = "TreeView Demo";
return View();
}
public ActionResult About()
{
return View();
}
[AcceptVerbs(HttpVerbs.Post)]
public string GetTreeData(string id)
{
List<AjaxTreeNodeJsonObject> results = new List<AjaxTreeNodeJsonObject>();
//NODE ID: TREEID_LEVEL_PARENTID_ID
//this should be the first call from the tree to initialize
if (string.IsNullOrEmpty(id) | id == "0")
{
results.Add(new AjaxTreeNodeJsonObject("TREE1_0_0_1", "U.S.A.", "#", true));
results.Add(new AjaxTreeNodeJsonObject("TREE1_0_0_2", "Canada", "#", true));
}
else
{
//Get Child Nodes
//these are subsequent calls to populate the tree nodes
string[] nodeInfo = id.Split('_');
string nodeTree = nodeInfo[0];
int nodeLevel = Convert.ToInt32(nodeInfo[1]);
int nodeParentId = Convert.ToInt32(nodeInfo[2]);
int nodeId = Convert.ToInt32(nodeInfo[3]);
//this would be better as a database lookup or some hierarchical tree structure
switch (nodeTree)
{
//WHICH TREE?
case "TREE1":
switch (nodeLevel)
{
//WHICH LEVEL?
case 0:
//country
switch (nodeParentId)
{
//WHICH PARENT?
case 0:
//no parent
switch (nodeId)
{
//WHICH NODE?
case 1:
//USA
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_1", "Alabama", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_2", "Alaska", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_3", "Arizona", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_4", "Arkansas", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_5", "California", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_6", "Colorado", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_7", "Connecticut", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_8", "Delaware", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_9", "Florida", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_10", "Georgia", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_11", "Hawaii", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_12", "Idaho", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_13", "Illinois", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_14", "Indiana", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_15", "Iowa", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_16", "Kansas", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_17", "Kentucky", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_18", "Louisiana", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_19", "Maine", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_20", "Maryland", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_21", "Massachusetts", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_22", "Michigan", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_23", "Minnesota", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_24", "Mississippi", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_25", "Missouri", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_26", "Montana", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_27", "Nebraska", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_28", "Nevada", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_29", "New Hampshire", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_30", "New Jersey", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_31", "New Mexico", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_32", "New York", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_33", "North Carolina", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_34", "North Dakota", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_35", "Ohio", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_36", "Oklahoma", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_37", "Oregon", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_38", "Pennsylvania", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_39", "Rhode Island", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_40", "South Carolina", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_41", "South Dakota", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_42", "Tennessee", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_43", "Texas", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_44", "Utah", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_45", "Vermont", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_46", "Virginia", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_47", "Washington", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_48", "West Virginia", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_49", "Wisconsin", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1_50", "Wyoming", "#"));
break;
case 2:
//CANDA
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_1", "Ontario", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_2", "Quebec", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_3", "Nova Scotia", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_4", "New Brunswick", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_5", "Manitoba", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_6", "British Columbia", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_7", "Prince Edward Island", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_8", "Saskatchewan", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_9", "Alberta", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_10", "Newfoundland and Labrador", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_11", "Northwest Territories", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_12", "Yukon", "#"));
results.Add(new AjaxTreeNodeJsonObject("TREE1_1_13", "Nunavut", "#"));
break;
}
break;
}
break;
}
break;
}
}
JavaScriptSerializer ser = new JavaScriptSerializer();
return ser.Serialize(results);
}
}
internal class AjaxTreeNodeJsonObject
{
private AjaxTreeNodeJsonObjectAttribute _attr = new AjaxTreeNodeJsonObjectAttribute();
private string _state = string.Empty;
private string _icon = string.Empty;
private string _metadata = string.Empty;
private AjaxTreeNodeJsonObjectDataLinkAttribute _data = new AjaxTreeNodeJsonObjectDataLinkAttribute();
private AjaxTreeNodeJsonObject[] _children;
public AjaxTreeNodeJsonObjectAttribute attr
{
get { return _attr; }
}
public AjaxTreeNodeJsonObjectDataLinkAttribute data
{
get { return _data; }
}
public string state
{
get { return _state; }
set { _state = value; }
}
public string icon
{
get { return _icon; }
set { _icon = value; }
}
public string metadata
{
get { return _metadata; }
set { _metadata = value; }
}
public AjaxTreeNodeJsonObject[] children
{
get { return _children; }
set { _children = value; }
}
public AjaxTreeNodeJsonObject()
{
}
public AjaxTreeNodeJsonObject(string id, string title, string href)
: this(id, title, href, false)
{
}
public AjaxTreeNodeJsonObject(string id, string title, string href, bool hasChildren)
{
//li values
this.attr.id = id;
this.attr.title = title;
//a values
this.data.attr.href = href;
this.data.attr.id = "a" + this.attr.id;
this.data.title = this.attr.title;
if (hasChildren)
{
this.state = "closed";
}
}
public AjaxTreeNodeJsonObject(string id, string title, string href, AjaxTreeNodeJsonObject[] children)
{
//li values
this.attr.id = id;
this.attr.title = title;
//a values
this.data.attr.href = href;
this.data.attr.id = "a" + this.attr.id;
this.data.title = this.attr.title;
if (children != null && children.Length > 0)
{
this.state = "closed";
this.children = children;
}
}
}
internal class AjaxTreeNodeJsonObjectAttribute
{
private string _id = string.Empty;
private string _title = string.Empty;
/// <summary>
/// Gets or sets the Id value
/// </summary>
public string id
{
get { return this._id; }
set { this._id = value; }
}
/// <summary>
/// Gets or sets the Title value
/// </summary>
public string title
{
get { return this._title; }
set { this._title = value; }
}
}
internal class AjaxTreeNodeJsonObjectDataLinkAttribute
{
private string _title = string.Empty;
private AjaxTreeNodeJsonObjectLinkAttribute _attr = new AjaxTreeNodeJsonObjectLinkAttribute();
/// <summary>
/// Gets or sets the Title value
/// </summary>
public string title
{
get { return this._title; }
set { this._title = value; }
}
public AjaxTreeNodeJsonObjectLinkAttribute attr
{
get { return _attr; }
set { _attr = value; }
}
}
internal class AjaxTreeNodeJsonObjectLinkAttribute
{
private string _id = string.Empty;
private string _href = string.Empty;
private string _target = string.Empty;
/// <summary>
/// Gets or sets the Id value
/// </summary>
public string id
{
get { return this._id; }
set { this._id = value; }
}
/// <summary>
/// Gets or sets the Href value
/// </summary>
public string href
{
get { return this._href; }
set { this._href = value; }
}
/// <summary>
/// Gets or sets the Target value
/// </summary>
public string target
{
get { return this._target; }
set { this._target = value; }
}
}
}
纳格