如何检查json字符串中是否存在特定键

Question

我有以下 json 字符串数据作为输入：

string json="{"-1":0,"78":6,"79":6,"80":2,"81":16777215,"82":16777215,"83":1,"84":0,"85":0,"86":"2023/05/07","87":0,"88":0,"89":1,"90":1,"124":1,"16":5,"17":null,"18":null,"19":0,"20":2,"21":2000,"22":0,"23":0,"24":0,"25":0,"26":0,"109":0,"110":0,"29":0,"30":0,"31":0,"32":2000,"33":13710,"34":15710,"135":null}"

我想检查是否有任何键有-1，以便它可以返回真或假。如何在 c# 中实现这一点？我无法使用 JSONobject 命名空间。

Answer 1

您可以使用 JavaSerializer 或 JSON.Net 程序集解析脚本组件中的 JSON 字符串并搜索键值。

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如果 JSON 数据是正式的并且只包含键和值，那么您可以搜索以下字符串 "-1":，如果找到则找到 -1 键。

if(json.contains("\"-1\":")){

//key found

}else{

// key not found

}