C# 消息：无效的 JSON 原语：ajax jquery 方法与 Webmethod
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Message: Invalid JSON primitive: ajax jquery method with Webmethod
提问by Nestor C
I am using Data value as object literal, instead of concatenating a String as explained in this answer
我使用数据值作为对象文字，而不是按照本答案中的说明连接字符串
My code is the following:
我的代码如下：
$.ajax({
url: "../Member/Home.aspx/SaveClient",
type: "POST",
async: false,
dataType: 'json',
contentType: 'application/json; charset=utf-8',
data: {
"projectSoid": ProjectId,
"startDate": StartDate,
"endDate": EndDate,
"clientManager": ClientManager
},
success: function(response) {
if (response.d != "") {
}
},
error: function(response) {
var r = jQuery.parseJSON(response.responseText);
alert("Message: " + r.Message);
alert("StackTrace: " + r.StackTrace);
alert("ExceptionType: " + r.ExceptionType);
}
})
and my webmethod is like this :
我的网络方法是这样的：
[WebMethod]
public static string SaveClient(string projectSoid, string startDate,
string endDate, string clientManager)
{
...
}
But I get the following error:
但我收到以下错误：
Message: Invalid JSON primitive: projectSoid
消息：无效的 JSON 原语：projectSoid
回答by nemesv
With your contentType: 'application/json; charset=utf-8'you are claiming that you will send JSON but currently your dataproperty is not holding JSON.
您contentType: 'application/json; charset=utf-8'声称您将发送 JSON，但目前您的data财产不持有 JSON。
You need to transform your datato JSON with the JSON.stringifymethod:
您需要data使用以下JSON.stringify方法将您的转换为 JSON ：
So change your dataproperty to:
因此，将您的data属性更改为：
data: JSON.stringify({
"projectSoid": ProjectId,
"startDate": StartDate,
"endDate": EndDate,
"clientManager": ClientManager
}),
You should note that the JSON.stringifymethod is not natively supported in older browsers so you may need to provide an implementation with using one of the various libraries like:
您应该注意，JSON.stringify旧浏览器本身不支持该方法，因此您可能需要使用各种库之一来提供实现，例如：
Douglas Crockford's JSON2 library.
Douglas Crockford 的JSON2 库。
回答by Hassan Nazeer
Javascript at Client side
客户端的 Javascript
var items = [{ projectSoid: ProjectId, startDate: StartDate, endDate: EndDate, clientManager: ClientManager }];
$.ajax({
url: '"../Member/Home.aspx/SaveClient',
type: "POST",
data: JSON.stringify({ items: items }),
//data: JSON.stringify("{DocKey : '" + DocKey + "',highlightText: '" + JSON.stringify(text) + "',pageNo: '" + pgNo + "',left: '" + left + "',top: '" + top + "',width: '" + width + "',height: '" + height + "'}"),
//data: "{DocKey\":\""+ DocKey+"\",\"highlightText\":\""+ text +"\",\"pageNo\":\""+pgNo+"\",\"left\":\""+left+"\",\"top\":\""+top+",\"width\":\""+width+"\",\"height\":\""+ height +"}}",
// data: "{DocKey : '" + DocKey + "',highlightText: '" + text + "',pageNo: '" + pgNo + "',left: '" + left + "',top: '" + top + "',width: '" + width + "',height: '" + height + "'}",
contentType: "application/json; charset=utf-8",
dataType: "json",
beforeSend: function () {
alert("Start!!! ");
},
success: function (data) {
alert("Save data Successfully");
},
failure: function (msg) { alert("Sorry!!! "); evt.obj.deleteObject(); },
async: false
});
Web Method at Code behind
代码后面的 Web 方法
[WebMethod]
public static string SaveClient(object items) {
List<object> lstItems = new JavaScriptSerializer().ConvertToType<List<object>>(items);
Dictionary<string, object> dic = (Dictionary<string, object>)lstItems[0];
}
