我的视图中有以下 javascript 来构建 TreeView 并从服务器获取数据:
$(function () {
$("#EquipmentTree").jstree({
"json_data": {
"ajax": {
"url": "/Helper/GetEquipTreeViewData",
"type": "POST",
"data": function () {$("#EquipmentTree").jstree('get_selected').attr('id');},
"dataType": "json",
"contentType": "application/json charset=utf-8"
}
},
"themes": {
"theme": "default",
"dots": true,
"icons": true,
"url": "Scripts/jstree-v.pre1.0/themes/default/style.css"
},
"plugins": ["themes", "json_data"],
"core": { "animation": 100 }
});
});
我的控制器有:
public ActionResult GetEquipTreeViewData(string nodeId)
{
do some stuff
return Json (data);
}
一切都很好,只是我从来没有得到选定的节点。我总是在 nodeId 处得到 NULL。即使我改为:
"data": { nodeId : "TEST" }
我仍然得到 null 或一些 Javascript 错误。这让我抓狂。我也试过:
"data" : JSON.stringfy(nodeId);
并继续发送null。
它应该是一个普通的 AJAX 调用,但它不是。我只需要将选定的树节点传递给控制器以根据用户选择重新加载结果页面。
感谢帮助。
[编辑] 我的测试变体结果:
测试1:
var selected_node = $("#EquipmentTree").jstree('get_selected').attr('id');
$("#EquipmentTree").jstree({
"json_data": {
"ajax": {
"url": "/Helper/GetEquipTreeViewData",
"type": "POST",
"data": { nodeId : selected_node },
"dataType": "json",
"contentType": "application/json; charset=utf-8"
}
},
"themes": {
"theme": "default",
"dots": true,
"icons": true,
"url": "Scripts/jstree-v.pre1.0/themes/default/style.css"
},
"plugins": ["themes", "json_data"],
"core": { "animation": 100 }
});
});
浏览器错误:Jason Primitive 无效:nodeId
[测试2]
代码:
$(function () {
var selected_node = $("#EquipmentTree").jstree('get_selected').attr('id');
$("#EquipmentTree").jstree({
"json_data": {
"ajax": {
"url": "/Helper/GetEquipTreeViewData",
"type": "POST",
// "data": { nodeId : selected_node },
"data": JSON.stringify ("nodeId : " + selected_node),
"dataType": "json",
"contentType": "application/json; charset=utf-8"
}
},
"themes": {
"theme": "default",
"dots": true,
"icons": true,
"url": "Scripts/jstree-v.pre1.0/themes/default/style.css"
},
"plugins": ["themes", "json_data"],
"core": { "animation": 100 }
});
});
在控制器调用函数,但收到 null。浏览器数据:
Request URL:http://localhost:7767/Helper/GetEquipTreeViewData
Request Method:POST
Status Code:200 OK
Request Headersview parsed
POST /Helper/GetEquipTreeViewData HTTP/1.1
Host: localhost:7767
Connection: keep-alive
Content-Length: 24
Accept: application/json, text/javascript, */*; q=0.01
Origin: http://localhost:7767
X-Requested-With: XMLHttpRequest
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.76 Safari/537.36
Content-Type: application/json; charset=UTF-8
Referer: http://localhost:7767/MasterDataAdminEquipment
Accept-Encoding: gzip,deflate,sdch
Accept-Language: pt-BR,pt;q=0.8,en-US;q=0.6,en;q=0.4
Cookie: ASP.NET_SessionId=yuf1omlottf0xb4aklvfr4wg
Request Payload view source
nodeId : EquipmentTree
No Properties
修复它具有“无属性”的请求有效负载。通常我们会有一个带有“参数”和“值”对的字典的表单数据......这是我正在尝试的第 n 个组合。很奇怪...