javascript 如何将 json 字符串传递给 webmethod c# ASP.NET
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How to pass json string to webmethod c# ASP.NET
提问by Paul Chefen Lagmark
Im trying to stringify a javascript object and then pass the string as a parameter to a WebMethod in Code Behind. I can't get it to work as I get a Internal Server Error of 500 and the stacktrace says that value is missing for parameter.
我试图对一个 javascript 对象进行字符串化，然后将该字符串作为参数传递给代码隐藏中的 WebMethod。我无法让它工作，因为我收到 500 的内部服务器错误，并且堆栈跟踪显示参数值丢失。
Here is the javascript code:
这是javascript代码：
var jSon = JSON.stringify(javascriptObject);
// "{"Foretagsnamn":"Avector","BGFarg":"000000","TextColor":"fafafa","FooterFarg":"ffffff","FooterColor":"000000","FooterLinkColor":"050505","FeaturedBorderColor":"","HoverFarg":"12ebeb","RutFarg":"0d0d0d","SelectedRutFarg":"","RutColor":"FFFFFF","LankColor":"","DelaMedSig":"1","PersonalSida":"0","StartpageTitle":"","StartpageDescription":"","GoogleMaps":"<iframe width=\"425\" height=\"350\" frameborder=\"0\" scrolling=\"no\" marginheight=\"0\" marginwidth=\"0\" src=\"https://maps.google.se/maps?f=q&source=embed&hl=sv&geocode=&q=Avector AB&aq=&sll=56.225986,12.870827&sspn=0.076248,0.154324&ie=UTF8&hq=Avector AB&hnear=&t=m&cid=645910733081021950&iwloc=A&ll=56.224594,12.859229&spn=0,0&output=embed\"></iframe><br /><small><a href=\"https://maps.google.se/maps?f=q&source=embed&hl=sv&geocode=&q=Avector AB&aq=&sll=56.225986,12.870827&sspn=0.076248,0.154324&ie=UTF8&hq=Avector AB&hnear=&t=m&cid=645910733081021950&iwloc=A&ll=56.224594,12.859229&spn=0,0\" style=\"text-align:left\">Visa st?rre karta</a></small>","HittaKartaUrl":"http://www.hitta.se/avector ab/?ngelholm/hxTP-4v1HG?vad=Avector AB","EniroKartaUrl":"http://kartor.eniro.se/m/aKkhi","Ikoner":"2","Email":"[email protected]","AdressSida":"1","shadowColor":"ffffff","lineColor":"2b292b","MenuHoverIcon":"V?lj bild fr?n server","fontFamily":"Verdana","supportText":"Support Avector","captcha":true,"metaKeywords":"","ShowSupportInFooter":true}"
$.ajax({
type: "POST",
url: "Post/Installningar.aspx/Updatera",
data: jSon,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (result) {
var resultAsString = result.d;
//_this.parent().siblings('.SavedStatus').html(resultAsString);
if (resultAsString == "1") { // Gick bra att spara.
alert("Uppgifterna ?r sparade.");
document.location = document.location;
}
else {
$('#StatusText').html("Gick inte att spara uppgifterna.");
}
},
error: function (xhr, ajaxOptions, thrownError) {
}
});
And here Is the webmethod:
这是网络方法：
[WebMethod]
public static string Updatera(string jSon)
{
It feels like I've tried everything that I've found when searching by google and here on SO.
感觉就像我已经尝试了通过谷歌和这里搜索时找到的所有东西。
I've also tried this guide that many refer to: http://encosia.com/using-jquery-to-directly-call-aspnet-ajax-page-methods/
我也试过很多人参考的这个指南：http: //encosia.com/using-jquery-to-directly-call-aspnet-ajax-page-methods/
Any ideas?
有任何想法吗？
回答by Satinder singh
First you need to use
首先你需要使用
var jSon = JSON.stringify({obj:javascriptObject});
var jSon = JSON.stringify({obj:javascriptObject});
instead of
代替
var jSon = JSON.stringify(javascriptObject);
var jSon = JSON.stringify(javascriptObject);
Then you webmethod would be like
那么你的 webmethod 会像
[WebMethod]
public static string Updatera(aData obj)
{
// logic code
}
Now here aData is your class something like below
现在这里 aData 是你的类，如下所示
public class aData {
public string Foretagsnamn {get;set;}
public string BGFarg {get;set;}
public string TextColor {get;set;}
public string FooterFarg {get;set;}
public string Email {get;set;}
}
So your final code look like
所以你的最终代码看起来像
jQuery :
jQuery ：
var jSon = JSON.stringify({obj:javascriptObject});
$.ajax({
type: "POST",
url: "Post/Installningar.aspx/Updatera",
data: jsonData,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnSuccess,
error: OnErrorCall
});
function OnSuccess(response){
}
function OnErrorCall(){
}
Code Behind :
背后的代码：
public class aData {
public string Foretagsnamn {get;set;}
public string BGFarg {get;set;}
public string TextColor {get;set;}
public string FooterFarg {get;set;}
public string Email {get;set;}
}
[WebMethod]
public static string Updatera(aData obj)
{
// logic code
}
Do check jQuery Ajax JSON Example in Asp.net
回答by Mayank Patel
Use this format for ajax post format :
将这种格式用于 ajax 帖子格式：
var jSon = JSON.stringify(javascriptObject);
Your Json Format will be like this : '{name: "' + name +'" }',
你的 Json 格式将是这样的：'{name: "' + name +'" }',
function ShowCurrentTime() {
$.ajax({
type: "POST",
url: "Installningar.aspx/Updatera",
data: jSon;
contentType: "application/json; charset=utf-8",
dataType: "json",
success: OnSuccess,
failure: function(response) {
alert(response.d);
}
});
}
function OnSuccess(response) {
alert(response.d);
}
Follow this step for complete run your code : http://www.aspsnippets.com/Articles/Calling-ASPNet-WebMethod-using-jQuery-AJAX.aspx
按照此步骤完整运行您的代码：http: //www.aspsnippets.com/Articles/Calling-ASPNet-WebMethod-using-jQuery-AJAX.aspx
