从Json返回字符串中提取故障，Json中的字段可以动态更改 [英] Trouble Extracting from Json Return String Where the Fields in the Json can Change Dynamically

问题描述

我遇到了一个问题，其中从API返回的Json字符串可能包含全部或部分字段可能取决于用户的输入.我有一种方法可以提取任何一种 各个字段如下-

I am running into a problem where the Json string coming back from the API may contain all or only part of the fields possible depending upon the users input. I have a way to extract any one of the fields individually as follows -

{

  "outageNumber":"17-06850752"，

  "outageNumber": "17-06850752",

  "outageTypeCd":"I"，

  "outageTypeCd": "I",

  "updated_by": [e-mail] "

  "updated_by": "[e-mail]"

}

将objJavaSrptSerializer设置为Object = New JavaScriptSerializer ().Deserialize(Of Object)(strJsonString)

strOutageNumber = objJavaSrptSerializer("outageNumber" ;)

strOutageTypeCd = objJavaSrptSerializer("outageTypeCd" ;)

只要从API返回的字段类型与我尝试提取的字段类型匹配，此方法就可以正常工作.例如，如果服务器未返回"outageTypeCd"字段，并且尝试了我的代码 无论如何提取该字段，都会出现以下错误–

This works fine as long as the field types coming back from the API match up to what I am attempting to extract. For example if the ‘outageTypeCd’ field was not returned by the server and my code attempted to extract that field anyway I get the following error –

给定的键在字典中不存在"

任何人都对我如何仅基于Json字符串中包含的内容来提取所有字段有任何想法.

推荐答案

我想我回答了我自己的问题...这是我想出的.如果有人有更好的解决方案，请告诉我...

I think I answered my own question... Here is what I came up with. If anyone has a better solution please let me know...

          

           

DimobjJavaSrptSerializer AsObject= NewJavaScriptSerializer().Deserialize(OfObject)(strJsonString)

          

           

If(objJavaSrptSerializer.ContainsKey("outageNumber123")) Then

               strOutageNumber = objJavaSrptSerializer(

                strOutageNumber = objJavaSrptSerializer(

"outageNumber")

               MsgBox(strOutageNumber)

                MsgBox(strOutageNumber)

          

           

               MsgBox(

                MsgBox(

)

"It is not there...")

          

           

如果

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