您好我有這個作爲我的控制器之一:如何檢索蒙戈db對象,並返回其作爲JSON對象
[HttpPost]
public JsonResult GetPinPoints(string Id)
{
Frames rslt = null;
string connString = ConfigurationManager.ConnectionStrings["MongoConnStringNew"].ToString();
MongoUrl murl = new MongoUrl(connString);
MongoServer mgconf = new MongoServer(murl);
try
{
mgconf.Connect();
MongoDatabase frmlydb = mgconf.GetDatabase("framely");
MongoCollection<Frames> collection = frmlydb.GetCollection<Frames>("Frames");
ObjectId oid = new ObjectId(Id);
Frames frms = collection.FindOne(Query.EQ("_id", oid));
if (frms != null)
{
rslt = frms;
}
}
catch (Exception ex)
{
}
finally
{
mgconf.Disconnect();
}
return Json(rslt.CoordinatesObj.ToJson());
}
蒙戈對象看起來是這樣的:
{"MetaTagsObj":{"Meta1":"my fam","Meta2":"lololo","Meta3":"lulz"},"PictureID":"http://framely.s3.amazonaws.com/0b7a9a72-c61b-4dec-a814-40b003072e31.jpg","UserID":"1","CoordinatesObj":[{"Position":1,"Top":182,"Left":20,"Height":73,"Width":90},{"Position":2,"Top":69,"Left":103,"Height":98,"Width":1...
我使用AJAX jQuery函數調用看起來像這樣的控制器:
$("#mybutton").click(function(){
$.ajax({
url: '/Member/GetPinPoints',
type: "POST",
dataType: "json",
contentType: "application/json; charset=utf-8",
success: function(data) {
alert(data);
},
error: function() {
alert("error");
}
});
return false;
});
我不認爲我這樣做的權利,我想我t與我返回json對象的方式有關。我不斷收到此錯誤:{「不設置到對象的實例對象引用」}
身在何方,我返回JSON對象。
你不嘗試的toJSON方法?像這樣:return Json(rslt.CoordinatesObj); – elranu 2011-05-31 02:13:03
@elranu是我嘗試過,但仍然是相同的錯誤 – anthonypliu 2011-05-31 03:58:41