无法从.net的JSON响应中删除.d封装 [英] Can't remove .d encapsulation from JSON response in .net
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问题描述
即使在出色的博客文章也不必担心ASP. NET AJAX的.d再次我无法在JSON响应中转义.d封装.我不知道我做错了什么，所以我将同时复制服务器端代码和客户端代码.
Even after the great blog post Never worry about ASP.NET AJAX’s .d again I can't escape the .d encapsulation in my JSON response. I don't know if I'm doing something wrong so I'll copy both my serverside and clientside code.
我正在使用Newtonsoft.JSON库序列化JSON.
I'm serializing JSON using Newtonsoft.JSON library.
客户端:
<script type="text/javascript">
$(function () {
$("#bt").click(function () {
$.ajax({
type: "POST",
url: "<%= Page.ResolveUrl("~/MapView.aspx/GetLocations")%>",
data: "{ type: '<%= Page.RouteData.Values["type"].ToString() %>', id: '<%= Page.RouteData.Values["id"].ToString() %>' }",
contentType: "application/json; charset=utf-8",
dataType: "json",
dataFilter: function(data) {
var msg;
if (typeof (JSON) !== 'undefined' &&
typeof (JSON.parse) === 'function')
msg = JSON.parse(data);
else
msg = eval('(' + data + ')');
if (msg.hasOwnProperty('d'))
return msg.d;
else
return msg;
},
success: function (msg) {
console.log(msg);
},
});
});
});
</script>
服务器端
[System.Web.Services.WebMethod]
public static string GetLocations(int id, string type)
{
string data = "";
if (type == "attraction")
{
var attractions = db.Attraction
.Where(a => a.AttractionId == id)
.Select(p => new { p.AttractionId, p.Name, p.Description, p.Location })
.ToList();
JObject attractionsJSON = new JObject(
new JProperty("Attractions", new JArray(
from a in attractions
select new JObject(
new JProperty("id", a.AttractionId),
new JProperty("name", a.Name),
new JProperty("location", a.Location),
new JProperty("description", a.Description)
))));
data = attractionsJSON.ToString();
}
else if (type == "category")
{
var attractions = db.Attraction
.Select(p => new { p.AttractionId, p.Name, p.Description, p.Location, p.CategoryId })
.ToList();
if (id != 0)
{
attractions = attractions.Where(a => a.CategoryId == id)
.ToList();
}
JObject attractionsJSON = new JObject(
new JProperty("Attractions", new JArray(
from a in attractions
select new JObject(
new JProperty("id", a.AttractionId),
new JProperty("name", a.Name),
new JProperty("location", a.Location),
new JProperty("description", a.Description)
))));
data = attractionsJSON.ToString();
}
return data;
}
服务器端-更新1
[System.Web.Services.WebMethod]
public static void GetLocations(int id, string type)
{
string data = "";
if (type == "attraction")
{
var attractions = db.Attraction
.Where(a => a.AttractionId == id)
.Select(p => new { p.AttractionId, p.Name, p.Description, p.Location })
.ToList();
JArray attractionsJSON = new JArray(
from a in attractions
select new JObject(
new JProperty("id", a.AttractionId),
new JProperty("name", a.Name),
new JProperty("location", a.Location),
new JProperty("description", a.Description)
));
data = attractionsJSON.ToString();
}
else if (type == "category")
{
var attractions = db.Attraction
.Select(p => new { p.AttractionId, p.Name, p.Description, p.Location, p.CategoryId })
.ToList();
if (id != 0)
{
attractions = attractions.Where(a => a.CategoryId == id)
.ToList();
}
JArray attractionsJSON = new JArray(
from a in attractions
select new JObject(
new JProperty("id", a.AttractionId),
new JProperty("name", a.Name),
new JProperty("location", a.Location),
new JProperty("description", a.Description)
));
data = attractionsJSON.ToString();
}
var js = new System.Web.Script.Serialization.JavaScriptSerializer();
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ContentType = "application/json; charset=utf-8";
HttpContext.Current.Response.Write(js.Serialize(data));
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}
}
推荐答案
尝试使用无返回值的void方法.而是写输出以自己回应！
try using void method with no return. instead write the output to response yourself!
[System.Web.Services.WebMethod]
public static void GetLocations(int id, string type)
{
// var attractions = something ;
var js = new System.Web.Script.Serialization.JavaScriptSerializer();
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ContentType = "application/json; charset=utf-8";
HttpContext.Current.Response.Write( js.Serialize(attractions ) );
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}
非常重要的是将这两个通话结束:
Very important to keep these 2 calls at end:
flush:确保将输出写入流
flush : makes sure output is written to stream
End:结束流，以防止asp.Net将空的Json写入流中
End : ends the stream to prevent asp.Net from writing empty Json to stream
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