在 MVC 4 中将对象转换为 JSON

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时间:2020-09-03 18:35:09  来源:igfitidea点击:

Convert Object to JSON in MVC 4

jsonasp.net-mvc-4

提问by user1735105

I am converting an object to JSON using JavaScriptSerializerand I can see this JSON output in server code:

我正在使用将一个对象转换为 JSON JavaScriptSerializer,我可以在服务器代码中看到这个 JSON 输出:

[{"UserId":1,"UserName":"Admin"}]

But in the UI it's getting converted to something like below

但是在 UI 中,它被转换为如下所示的内容

[{"UserId":1,"UserName":"Admin"}].

How to escape those "?

怎么躲开那些"

回答by Darin Dimitrov

If you are using the Razor view engine you need to use the Html.Rawmethod:

如果您使用 Razor 视图引擎,则需要使用以下Html.Raw方法:

<script type="text/javascript">
    var model = @Html.Raw(Json.Encode(Model));
</script>

Notice the usage of the Json.Encodemethod which is shorter and equivalent to new JavaScriptSerializer().Serialize().

请注意Json.Encode更短且等效于的方法的用法new JavaScriptSerializer().Serialize()

回答by Erik Funkenbusch

Why are you doing that? Why not just return a JsonResult?

你为什么这样做?为什么不只返回一个JsonResult

public ActionResult MyMethod()
{
    List<ListItem> list = new List<ListItem>() {
        new ListItem() { UserId = "1", UserName = "Admin" },
        new ListItem() { UserId = "2", UserName = "JohnDoe" },
        new ListItem() { UserId = "3", UserName = "JaneDoe" }};

    return this.Json(list);
}

回答by Fenwick

Just one more thing on Darin Dimitrov's answer. In my VS2012 there is a compilation error with the semicolon, cuz the statement from JS side is actually "var model = ;". A way around using a pair of quotation to wrap the Razor part like this:

关于 Darin Dimitrov 的回答还有一件事。在我的 VS2012 中,分号存在编译错误,因为 JS 端的语句实际上是“var model = ;”。一种使用一对引号来包装 Razor 部分的方法,如下所示:

var model = "@Html.Raw(Json.Encode(Model))";

This will not cause any error.

这不会导致任何错误。

Json.Encode() seems to be a wrapper function of JavaScriptSerializer. I'm not sure if the latter is more time efficient.

Json.Encode() 似乎是 JavaScriptSerializer 的包装函数。我不确定后者是否更省时。