Jquery ajax return exception(Request format is invalid)
I have following code snippet in which I want to return value from ajax.but I am getting following exception
Request format is invalid
[WebMethod]
[ScriptMethod(ResponseFor开发者_JAVA技巧mat=ResponseFormat.Json)]
public string HelloWorld(string name) {
return "Hello World"+name;
}
$(document).ready(function () {
function checkUser2(user) {
var result;
$.ajax({
type: "POST",
async: false,
url: "WebService.asmx/HelloWorld",
dataType: "json",
contentType:"application/json",
data: { name: user},
success: function (data) {
result = data;
}
});
return result;
}
$("#check").click(function () {
alert(checkUser2("test"));
});
});
EDIT
If you have other way for this please share some link or code
try this
$.ajax({
...
data: "{ 'name': 'user'}",
...
});
try this :
[WebMethod]
[ScriptMethod(ResponseFormat=ResponseFormat.Json)]
public string HelloWorld(string name) {
return "{'message':'Hello World'}";
}
-----
<script type="text/javascript">
$(document).ready(function () {
function checkUser2(user) {
var result;
$.ajax({
type: "POST",
async: false,
url: "WebService.asmx/HelloWorld",
dataType: "json",
data:{name:user},
success: function (data) {
result = data.message;
}
});
return result;
}
$("#check").click(function () {
alert(checkUser2("test"));
});
});
</script>
json for ASP : http://code.google.com/p/aspjson/
I figured out the issue.Below is the complete source code(no changes in webservice)
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default4.aspx.cs" Inherits="Default4" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>
<title></title>
<script type="text/javascript">
$(document).ready(function () {
function checkUser2(name, callback) {
$.ajax({
type: "POST",
async: tr,
// url: "Handler.ashx",
url: "WebService.asmx/HelloWorld",
data: "{name:'" + name + "'}",
dataType: "json",
contentType: "application/json",
success: function (data) {
callback(data.d);
}
});
}
$("#check").click(function () {
checkUser2("test", function (d) {
var a = d;
alert(a);
});
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="button" name="check" value="check " id="check" />
</div>
</form>
</body>
</html>
加载中,请稍侯......
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