我在视图中有以下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);
}
Everthing工作正常,但我从未获得所选节点。我总是在nodeId得到NULL。即使我改为:
"data": { nodeId : "TEST" }
我仍然得到null或一些Javascript错误。这让我感到疯狂。我也试过了:
"data" : JSON.stringfy(nodeId);
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treenode传递给控制器,根据用户选择重新加载结果页面。
感谢您的帮助。
[编辑] 我对测试变体的结果:
TEST1:
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 }
});
});
浏览器出错: 无效的Jason Primitive:nodeId
[TEST2]
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 }
});
});
在控制器上调用该函数,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
修复具有“无属性”的请求有效负载。通常情况下,我们会有一个表格数据,其中包含“参数”和“价值”对的字典....这是我尝试的第n个组合。很奇怪......
答案 0 :(得分:1)
请改为尝试:
public JsonResult GetEquipTreeViewData(string nodeId)
{
do some stuff
return Json (data, JsonRequestBehavior.DenyGet);
}
答案 1 :(得分:1)
在我的代码中我使用:
"contentType": "application/json; charset=utf-8"
(注意';')
除此之外,当ajax调用返回时,您应该返回JSON格式的响应:您是否尝试使用Chrome Developer工具进行检查?你收到回复吗?
最后但同样重要的是,如果您得到正确的回复,默认情况下不会选择任何节点,因此查询get_selected
将返回undefined
。
答案 2 :(得分:0)
行。这就是我解决它的方式(实际上我改为将数据传递给视图):
$(function () {
var selected_node = $("#EquipmentTree").jstree('get_selected').attr('id');
var link = '@Url.Action("GetEquipTreeViewData", "Helper", new { nodeId = "-1" })';
link = link.replace("-1", selected_node);
$("#EquipmentTree").jstree({
"json_data": {
"ajax": {
"url": link,
"type": "POST",
"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 }
});
});
基本上我退出了javascript并去找帮助者(他们来这里是为了帮助)...... Javascript很好,功能强大,但仍缺乏一个好的IDE环境/调试工具,以避免与逗号,半音和其他小事相关的这些类型的故障。请记住我原来的纯C ++时代(我的意思是纯cc编译器,根本没有IDE)。
希望这有助于某人!
的Rds!