Error:Cannot access child value on Newtonsoft.Json.Linq.JValue
Error:Cannot access child value on Newtonsoft.Json.Linq.JValue
我如何访问以下 object 类型的值，该值作为请求 body 来自 http 触发器函数中另一个函数应用程序的数据工厂输出。
现在我需要在 http 触发器函数中对这些输出执行一些操作。
{
“功能名称”：“GoogleAuth”，
“方法”：“POST”，
“headers”：{}，
“body”：{
"响应": "[{"id":"hjk","name":"abc","description":"hki","brand":"鸟眼","ean":"125","mediaStorageKey ":"124","maxQuantity":6,"价格":1.75,"尺寸":224.0,"sizeUnits":"克"}]",
"effectiveIntegrationRuntime": "DefaultIntegrationRuntime（西欧）",
“执行持续时间”：0，
“durationInQueue”：{
“集成运行时队列”：0
},
“账单参考”：{
"activityType": "外部活动",
“计费持续时间”：[
{
“meterType”：“AzureIR”，
“持续时间”：0.016666666666666666，
“单位”：“小时”
}
]
}
}
}
我正尝试像这样访问它，但显示错误。
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
dynamic body = JsonConvert.DeserializeObject(requestBody);
dynamic data = body["Response"];
product.OfferId = string.IsNullOrEmpty(Convert.ToString(data[0]["id"])) ? " " :Convert.ToString(data[0]["id"]);
错误：无法访问 Newtonsoft.Json.Linq.JValue 上的 child 值。
"Response": "[{\"id\":\"cc4324be-fa0e-424c-97e9-97644752f609\",\"name\":\"Seriously Tasty Pasties Traditional\",\"description\":\"Seriously Tasty Traditional Beef and Vegetable Pasty 199G\",\"brand\":\"Seriously Tasty\",\"ean\":\"5011187110319\",\"mediaStorageKey\":\"https://rt-1-dv-euw-retailapis-end-01.azureedge.net/5011187110319_1_1024x1024_20210325.png\",\"maxQuantity\":6,\"price\":0.55,\"size\":null,\"sizeUnits\":null}]
首先，请设置一个断点来检查requestBody值，因为上面的值不是有效的json。您可以搜索“Json Parse Online”并使用在线工具进行验证。
如下更改响应后（删除“[”之前和“]”之后的“”），您的代码运行良好
string requestBody = "{\"Response\": [{\"id\":\"cc4324be-fa0e-424c-97e9-97644752f609\",\"name\":\"Seriously Tasty Pasties Traditional\",\"description\":\"Seriously Tasty Traditional Beef and Vegetable Pasty 199G\",\"brand\":\"Seriously Tasty\",\"ean\":\"5011187110319\",\"mediaStorageKey\":\"https://rt-1-dv-euw-retailapis-end-01.azureedge.net/5011187110319_1_1024x1024_20210325.png\",\"maxQuantity\":6,\"price\":0.55,\"size\":null,\"sizeUnits\":null}]}";
dynamic body = Newtonsoft.Json.JsonConvert.DeserializeObject(requestBody);
dynamic data = body["Response"];
var offerId = string.IsNullOrEmpty(Convert.ToString(data[0]["id"])) ? " " : Convert.ToString(data[0]["id"]); //output: cc4324be-fa0e-424c-97e9-97644752f609
其次，根据您的评论，动态数据值为：
[{"id":"b","name":"Seriously Tasty Pasties Traditional","description":"Seriously Tasty Traditional Beef and Vegetable Pasty 199G","brand":"Seriously Tasty","ean":"6","mediaStorageKey":"7fb","maxQuantity":6,"price":0.55,"size":null,"sizeUnits":null}]
这种情况下，可以将data值转成字符串，再用JsonConvert.DeserializeObject()转成字符串值，就可以得到id值了。代码如下：
string requestBody = "{\"Response\": [{\"id\":\"cc4324be-fa0e-424c-97e9-97644752f609\",\"name\":\"Seriously Tasty Pasties Traditional\",\"description\":\"Seriously Tasty Traditional Beef and Vegetable Pasty 199G\",\"brand\":\"Seriously Tasty\",\"ean\":\"5011187110319\",\"mediaStorageKey\":\"https://rt-1-dv-euw-retailapis-end-01.azureedge.net/5011187110319_1_1024x1024_20210325.png\",\"maxQuantity\":6,\"price\":0.55,\"size\":null,\"sizeUnits\":null}]}";
dynamic body = Newtonsoft.Json.JsonConvert.DeserializeObject(requestBody);
dynamic data = body["Response"];
var offerId = string.IsNullOrEmpty(Convert.ToString(data[0]["id"])) ? " " : Convert.ToString(data[0]["id"]); //output: cc4324be-fa0e-424c-97e9-97644752f609
var datastr = Convert.ToString(data);
var datavalue = "[{\"id\":\"cc4324be-fa0e-424c-97e9-97644752f609\",\"name\":\"Seriously Tasty Pasties Traditional\",\"description\":\"Seriously Tasty Traditional Beef and Vegetable Pasty 199G\",\"brand\":\"Seriously Tasty\",\"ean\":\"5011187110319\",\"mediaStorageKey\":\"https://rt-1-dv-euw-retailapis-end-01.azureedge.net/5011187110319_1_1024x1024_20210325.png\",\"maxQuantity\":6,\"price\":0.55,\"size\":null,\"sizeUnits\":null}]";
dynamic databody = Newtonsoft.Json.JsonConvert.DeserializeObject(datastr); //for test purpose, change datastr to datavalue.
var Id = string.IsNullOrEmpty(Convert.ToString(databody[0]["id"])) ? " " : Convert.ToString(databody[0]["id"]); //output: cc4324be-fa0e-424c-97e9-97644752f609
调试截图如下：
我如何访问以下 object 类型的值，该值作为请求 body 来自 http 触发器函数中另一个函数应用程序的数据工厂输出。 现在我需要在 http 触发器函数中对这些输出执行一些操作。 { “功能名称”：“GoogleAuth”， “方法”：“POST”， “headers”：{}， “body”：{ "响应": "[{"id":"hjk","name":"abc","description":"hki","brand":"鸟眼","ean":"125","mediaStorageKey ":"124","maxQuantity":6,"价格":1.75,"尺寸":224.0,"sizeUnits":"克"}]", "effectiveIntegrationRuntime": "DefaultIntegrationRuntime（西欧）", “执行持续时间”：0， “durationInQueue”：{ “集成运行时队列”：0 }, “账单参考”：{ "activityType": "外部活动", “计费持续时间”：[ { “meterType”：“AzureIR”， “持续时间”：0.016666666666666666， “单位”：“小时” } ] } } }
我正尝试像这样访问它，但显示错误。
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
dynamic body = JsonConvert.DeserializeObject(requestBody);
dynamic data = body["Response"];
product.OfferId = string.IsNullOrEmpty(Convert.ToString(data[0]["id"])) ? " " :Convert.ToString(data[0]["id"]);
错误：无法访问 Newtonsoft.Json.Linq.JValue 上的 child 值。
"Response": "[{\"id\":\"cc4324be-fa0e-424c-97e9-97644752f609\",\"name\":\"Seriously Tasty Pasties Traditional\",\"description\":\"Seriously Tasty Traditional Beef and Vegetable Pasty 199G\",\"brand\":\"Seriously Tasty\",\"ean\":\"5011187110319\",\"mediaStorageKey\":\"https://rt-1-dv-euw-retailapis-end-01.azureedge.net/5011187110319_1_1024x1024_20210325.png\",\"maxQuantity\":6,\"price\":0.55,\"size\":null,\"sizeUnits\":null}]
首先，请设置一个断点来检查requestBody值，因为上面的值不是有效的json。您可以搜索“Json Parse Online”并使用在线工具进行验证。
如下更改响应后（删除“[”之前和“]”之后的“”），您的代码运行良好
string requestBody = "{\"Response\": [{\"id\":\"cc4324be-fa0e-424c-97e9-97644752f609\",\"name\":\"Seriously Tasty Pasties Traditional\",\"description\":\"Seriously Tasty Traditional Beef and Vegetable Pasty 199G\",\"brand\":\"Seriously Tasty\",\"ean\":\"5011187110319\",\"mediaStorageKey\":\"https://rt-1-dv-euw-retailapis-end-01.azureedge.net/5011187110319_1_1024x1024_20210325.png\",\"maxQuantity\":6,\"price\":0.55,\"size\":null,\"sizeUnits\":null}]}";
dynamic body = Newtonsoft.Json.JsonConvert.DeserializeObject(requestBody);
dynamic data = body["Response"];
var offerId = string.IsNullOrEmpty(Convert.ToString(data[0]["id"])) ? " " : Convert.ToString(data[0]["id"]); //output: cc4324be-fa0e-424c-97e9-97644752f609
其次，根据您的评论，动态数据值为：
[{"id":"b","name":"Seriously Tasty Pasties Traditional","description":"Seriously Tasty Traditional Beef and Vegetable Pasty 199G","brand":"Seriously Tasty","ean":"6","mediaStorageKey":"7fb","maxQuantity":6,"price":0.55,"size":null,"sizeUnits":null}]
这种情况下，可以将data值转成字符串，再用JsonConvert.DeserializeObject()转成字符串值，就可以得到id值了。代码如下：
string requestBody = "{\"Response\": [{\"id\":\"cc4324be-fa0e-424c-97e9-97644752f609\",\"name\":\"Seriously Tasty Pasties Traditional\",\"description\":\"Seriously Tasty Traditional Beef and Vegetable Pasty 199G\",\"brand\":\"Seriously Tasty\",\"ean\":\"5011187110319\",\"mediaStorageKey\":\"https://rt-1-dv-euw-retailapis-end-01.azureedge.net/5011187110319_1_1024x1024_20210325.png\",\"maxQuantity\":6,\"price\":0.55,\"size\":null,\"sizeUnits\":null}]}";
dynamic body = Newtonsoft.Json.JsonConvert.DeserializeObject(requestBody);
dynamic data = body["Response"];
var offerId = string.IsNullOrEmpty(Convert.ToString(data[0]["id"])) ? " " : Convert.ToString(data[0]["id"]); //output: cc4324be-fa0e-424c-97e9-97644752f609
var datastr = Convert.ToString(data);
var datavalue = "[{\"id\":\"cc4324be-fa0e-424c-97e9-97644752f609\",\"name\":\"Seriously Tasty Pasties Traditional\",\"description\":\"Seriously Tasty Traditional Beef and Vegetable Pasty 199G\",\"brand\":\"Seriously Tasty\",\"ean\":\"5011187110319\",\"mediaStorageKey\":\"https://rt-1-dv-euw-retailapis-end-01.azureedge.net/5011187110319_1_1024x1024_20210325.png\",\"maxQuantity\":6,\"price\":0.55,\"size\":null,\"sizeUnits\":null}]";
dynamic databody = Newtonsoft.Json.JsonConvert.DeserializeObject(datastr); //for test purpose, change datastr to datavalue.
var Id = string.IsNullOrEmpty(Convert.ToString(databody[0]["id"])) ? " " : Convert.ToString(databody[0]["id"]); //output: cc4324be-fa0e-424c-97e9-97644752f609
调试截图如下：