如何从本地存储的文件读取JSON? [英] How can I read JSON from a file stored locally?

问题描述

我正在尝试使用JSON.Net来加载本地存储在ASP.Net MVC 4站点上的JSON文件，但是无法指向该文件.这是我正在尝试做的事情:

I am attempting to use JSON.Net to load in a JSON file stored locally on an ASP.Net MVC 4 site, but am having trouble pointing to the file. Here is what I am trying to do:

List<Treatment> treatments = JsonConvert.DeserializeObject<List<Treatment>>(Server.MapPath("~/Content/treatments.json"));

并遇到此错误:

An exception of type 'Newtonsoft.Json.JsonReaderException' occurred in Newtonsoft.Json.dll but was not handled in user code

Additional information: Unexpected character encountered while parsing value: c. Path '', line 0, position 0.

我应该怎么做?

推荐答案

您需要先使用FileStream读取JSON.

You need to read in the JSON first using a FileStream.

尝试一下.

using(StreamReader sr = new StreamReader(Server.MapPath("~/Content/treatments.json")))
{
      treatments = JsonConvert.DeserializeObject<List<Treatment>>(sr.ReadToEnd());
}

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