如何从视图发送字符串化的JSON来控制器MVC4视图、字符串、控制器、JSON
我想送一个字符串化的JSON对象上按一下按钮。我想如下...在按钮单击我能够调用所需的操作方法，但它传递空的参数 ..
I want to send a stringified Json object on button click. I am trying as follows... On button click I am able to call the required Action method, but it's passing null for the parameter..
MemberLogin.cshtml 的
<input type="button" value="» Continue" id="btnLogin" onclick="PostData();">
<script type="text/javascript">
function PostData() {
var ObjLogInDto = new Object();
ObjLogInDto.UserName = $("#txtUserName").val();
ObjLogInDto.Password = $("#txtMemberPassword").val();
ObjLogInDto.CaptchaText = $("#txtCaptcha").val();
var StringifiedData = JSON.stringify(ObjLogInDto);
$.ajax({
url: '@Url.Content("~/Member/MemberLogin/MemberLogin")',
async: false,
type: "POST",
data: StringifiedData,
dataType: "json",
contentType: "application/json; charset=utf-8",
error: function (jqXHR, textStatus, errorThrown) {
alert("ERROR:" + jqXHR + "-" + textStatus + "-" + errorThrown);
},
success: function (data, textStatus, jqXHR) {
alert("SUCCESS:" + data.Message);
}
});
}
</script>
Action方法
Action method
[HttpPost]
public ActionResult MemberLogin(string JsonStr)
{
var ObjMemberLoginDto =
new JavaScriptSerializer().Deserialize<MemberLoginDto>(JsonStr);
}
我正在为这个空 JsonStr 。
注：我已经包括Json2.js。在阿贾克斯 StringifiedData 呼叫保持字符串化的数据。如
{用户名：TEST13361，密码：testpswd，CaptchaText：gz8h4}
I am getting null for this JsonStr.
Note:I have included Json2.js. StringifiedData in ajax call holds stringified data. as
{"UserName":"TEST13361","Password":"testpswd","CaptchaText":"gz8h4"}
推荐答案
的contentType'在你的$就财产（...）的配置是有问题的。 无论是删除的contentType，这样它会被设置为默认或者设置正确的内容类型。 你可以找到更多的内容类型这里
'contentType' property in your $.ajax(...) config is having problem. Either remove the contentType so that it would be set to default or set a proper content type. You can find more on content type here
另外，作为@Jai建议，你需要用数据在阿贾克斯（...）的设置是一个键 - 值对与重点相同的动作方法的参数名称以进行适当的模式结合。
Also as @Jai suggested, you need to wrap the "data" in ajax(...) setting to be a key-value pair with Key same as that of action method's parameter name for a proper modal-binding.
