开云官网优惠活动

3年前 (2023-05-01)

如果您更换

// This takes the current bitcoin price and formats it so there is the correct amount of decimal places
string story = (string)ja["response"]["results"]["fields"]["body"];
@H_301_5@

与


// This takes the current bitcoin price and formats it so there is the correct amount of decimal places
string story = (string)ja["response"]["results"][0]["fields"]["body"];
@H_301_5@

应该适合您的示例。 同题参见请注意，在您提供的示例中，结果后面的方括号表示要在访问代码中说明的数组。
解决方法

 
 
我正在使用监护人API尝试检索故事，但一直收到异常。 对照阅读json的字符串包含以下json，但是我无法使用LINQ访问主体。


这里是：


{
 "response":{
 "status":"ok","userTier":"approved","total":1,"startIndex":1,"pageSize":10,"currentPage":1,"pages":1,"orderBy":"newest","results":[{
 "id":"sustainable-business/sustainable-finance-where-next-open-thread","sectionId":"sustainable-business","sectionName":"Guardian Sustainable Business","webPublicationDate":"2014-02-13T13:27:00Z","webTitle":"Where next for sustainable finance? - open thread","webUrl":"http://www.theguardian.com/sustainable-business/sustainable-finance-where-next-open-thread","apiUrl":"http://content.guardianapis.com/sustainable-business/sustainable-finance-where-next-open-thread","fields":{
 "body":"如果您更换..."
 }
 }]
 }
}

我已经尝试了一切，包括：
string story = (string)ja["response"]["results"]["fields"]["body"];

更新：
public partial class Story : PhoneApplicationPage
{
 string url;
 string jsonData;

 // Http used so the json can be retrived via the get async methods
 HttpClient webClient = new HttpClient ;

 protected override void OnNavigatedTo(NavigationEventArgs e)
 {
 if (NavigationContext.QueryString.ContainsKey("key"))
 {
 string encodedValue = NavigationContext.QueryString["key"];
 url = Uri.UnescapeDataString(encodedValue);
 textBox.Text = url;
 guardianPanorama ;
 }
 }
 private async void guardianPanorama 
 {
 try
 {
 HttpResponseMessage Result = await webClient.GetAsync(url);

 // This takes the http response content and is turned into a string
 jsonData = await Result.Content.ReadAsStringAsync ;

 JObject ja = JObject.Parse(jsonData);

 // This takes the current bitcoin price and formats it so there is the correct amount of decimal places
 string story = (string)ja["response"]["results"]["fields"]["body"];

 // It then gets added to the textbox
 textBox.Text = story;
 }
 catch (Exception errors)
 {
 MessageBox.Show("There has been a error with the Guardian API");
 Console.WriteLine("An error occured:" + errors);
 }
 }
}

例外：
System.ArgumentException：使用无效键值“ fields”访问的JArray值。 相关阅读期望数组位置索引。
在Newtonsoft.Json.Linq.JArray.get_Item（Object key）

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标签:string

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