直接使用流进行解析，而不是保存文件

Question

我的意思是，这是我的代码:

// Create the web request (posts/1)
HttpWebRequest request = WebRequest.Create("https://jsonplaceholder.typicode.com/posts/1") as HttpWebRequest;
// Get response  
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
   // Get the response stream  
   StreamReader reader = new StreamReader(response.GetResponseStream());
   {
       string myString = reader.ReadToEnd();
       System.IO.File.WriteAllText(@"C:UsersadminDocumentsVisual Studio 2015ProjectsWriteText.json", myString);
   }

   // JSON deserialize from a file
   String JSONstring = File.ReadAllText(@"C:UsersadminDocumentsVisual Studio 2015ProjectsWriteText.json");
   //  List<PARSE> pList = JsonConvert.DeserializeObject<List<PARSE>>(JSONstring);
   PARSE pList = JsonConvert.DeserializeObject<PARSE>(JSONstring);

如果不保存流并再次将其加载到字符串，我怎么能做到这一点呢?我想使用我的流直接到字符串'JSONstring'，然后解析它。

Answer 1

您的代码包含解决方案

// Create the web request (posts/1)
HttpWebRequest request = WebRequest.Create("https://jsonplaceholder.typicode.com/posts/1") as HttpWebRequest;
// Get response  
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
   // Get the response stream  
   StreamReader reader = new StreamReader(response.GetResponseStream());
   {
       //string myString = reader.ReadToEnd();
       //System.IO.File.WriteAllText(@"C:UsersadminDocumentsVisual Studio 2015ProjectsWriteText.json", myString);
   }

   // JSON deserialize from a file
   // String JSONstring = File.ReadAllText(@"C:UsersadminDocumentsVisual Studio 2015ProjectsWriteText.json");
   //  List<PARSE> pList = JsonConvert.DeserializeObject<List<PARSE>>(JSONstring);
   PARSE pList = JsonConvert.DeserializeObject<PARSE>(reader.ReadToEnd());
   reader.close();

Answer 2

下面是一个如何将HTTP流解析为Json(没有错误处理)的示例。玩一下，如果你遇到什么特别的事情，请告诉我们。在这段代码中。API_Json是具有反序列化类的类，我正在反序列化API_Json。RootObject:

   public async Task<API_Json.RootObject> walMart_Lookup(string url)
    {
        lookupIsWorking = true;
        HttpClientHandler handler = new HttpClientHandler()
        {
            AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate
        };
        using (HttpClient http = new HttpClient(handler))
        {
            http.DefaultRequestHeaders.AcceptEncoding.Add(new System.Net.Http.Headers.StringWithQualityHeaderValue("gzip"));
            http.Timeout = TimeSpan.FromMilliseconds(Timeout.Infinite);
            url = String.Format(url);
            using (var response = await http.GetAsync(url, HttpCompletionOption.ResponseHeadersRead))
            {
                Console.WriteLine(response);
                var serializer = new JsonSerializer();
                using (StreamReader sr = new StreamReader(await response.Content.ReadAsStreamAsync()))
                {
                    using (var jsonTextReader = new JsonTextReader(sr))
                    {
                        var root = serializer.Deserialize<API_Json.RootObject>(jsonTextReader);
                       lookupIsWorking = false;
                        return root;
                    }
                }
                //var obj = (API_Json_Special_Feeds.RootObject)serializer.Deserialize(sr, typeof(API_Json_Special_Feeds.RootObject));
                //return obj;
            }
        }

    }