通过JSONPath在指定位置添加JSON

Question

我从用户获取JSON和JSONPath。用户还给我一个他想添加到他的JSON中的新内容（值或对象）。我试图创建一个方法，将新的内容添加到JSONPath指定的路径。

方法输入：JSON，jsonpath，newcontent（字符串） 方法输出：具有添加newcontent

JSON例如

{ "store": { 
    "book": [ 
     { "category": "reference", 
     "author": "Nigel Rees", 
     "title": "Sayings of the Century", 
     "price": 8.95 
     }, 
     { "category": "fiction", 
     "author": "Evelyn Waugh", 
     "title": "Sword of Honour", 
     "price": 12.99 
     } 
    ] 
    } 
} 

JSONPath例如

$.store 

新JSON 要添加的对象

movie [title : The Godfather] 

方法返回

{ "store": { 
    "book": [ 
     { "category": "reference", 
     "author": "Nigel Rees", 
     "title": "Sayings of the Century", 
     "price": 8.95 
     }, 
     { "category": "fiction", 
     "author": "Evelyn Waugh", 
     "title": "Sword of Honour", 
     "price": 12.99 
     } 
    ], 
    "movie": [ 
     { 
     "title" : "The Godfather" 
     } 
    ] 
    } 
} 

Answer 1

你可以做这样的事情：

string ApplyChange(string originalJson, string path, string jsonToAdd) 
{ 
    var root = JObject.Parse(originalJson); 
    var node = root.SelectToken(path); 
    switch (node.Type) 
    { 
     case JTokenType.Object: 
     { 
      var objectToMerge = JObject.Parse("{" + jsonToAdd + "}"); 
      ((JObject)node).Merge(objectToMerge); 
      break; 
     } 
     case JTokenType.Array: 
     { 
      var objectToMerge = new JArray(JToken.Parse(jsonToAdd)); 
      ((JArray)node).Merge(objectToMerge); 
      break; 
     } 
     default: 
      throw new NotSupportedException(); 
    } 
    return root.ToString(); 
}