要通过全JSON对象为MVC控制器 [英] To pass whole JSON objects into controller of MVC

问题描述

我想整个JSON对象传递到MVC中的控制器，这样我可以访问整个对象。
我使用以下code ..

I wants to pass whole JSON objects into controller in MVC so that i can access whole object. I am using following code ..

称为视图脚本

var Email = {
            To:  $("#txtTo").val(),
            Text:  $("#txtTest").val(),
            Subject: $("#txtSubject").val()
        };

        $.ajax({
            type: "POST",
            url: ("Controller/SendEmail"),
            data: JSON.stringify(Email ),
            datatype: "json",
            contentType: "application/json; charset=utf-8",
            cache: false,
            success: function(htmlResult) {
                alert("Mail Send")
            },
            error: function(msg) { alert("Error Occurs."); }
        });

但是当我把这个控制器中：

but when i call this in controller :

 public ActionResult SendEmail(Model model)
            {
                string to = model.To ;
    }

它给了空。如何解决此问题？

it gives null. How to resolve this?

推荐答案

您必须做出这样一个类：

You have to make a class like this :

public class ObjectFilter : ActionFilterAttribute
        {
            public string Param { get; set; }
            public Type RootType { get; set; }

            public override void OnActionExecuting(ActionExecutingContext filterContext)
            {
                if ((filterContext.HttpContext.Request.ContentType ?? string.Empty).Contains("application/json"))
                {
                    object o = new System.Runtime.Serialization.Json.DataContractJsonSerializer(RootType).ReadObject(filterContext.HttpContext.Request.InputStream);
                    filterContext.ActionParameters[Param] = o;
                }
            }
        }

你，你要传递到JSON类是如下：

you Class that you wants to pass into JSON is as follow :

public class Email
        {
            public To{ get; set; }
            public string Subject { get; set; }
            public string Text { get; set; }
        }

现在不得不调用这个类的属性，在你的控制器：

Now to have to call this class as attributes in your controller as :

[ObjectFilter(Param = "model", RootType = typeof(Email))]
public ActionResult SendEmail(Email model)
            {
                string to = model.To ;
    }

这会给你想要的结果。

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