使用JSONPath

Question

單個對象檢索JSON數據下面給出的JSON：

我可以用

{ 
    "store": { 
     "book": [ 
      { 
       "category": "reference", 
       "author": "Nigel Rees", 
       "title": "Sayings of the Century" 
      }, 
      { 
       "category": "fiction", 
       "author": "Evelyn Waugh", 
       "title": "Sword of Honour", 
       "price": 12.99 
      }, 
      { 
       "category": "fiction", 
       "author": "Herman Melville", 
       "title": "Moby Dick", 
       "isbn": "0-553-21311-3" 
      }, 
      { 
       "category": "fiction", 
       "author": "J. R. R. Tolkien", 
       "title": null, 
       "isbn": "0-395-19395-8", 
       "price": null 
      } 
     ], 
     "bicycle": { 
      "color": "red", 
      "price": 19.95 
     } 
    }, 
    "expensive": 10 
} 

什麼JSON路徑檢索包含category，author，price和title參數book的第一個元素？要清楚，我不想任何category,author,0 price和title參數 - 只有那些來自單個書籍對象的參數。此外，book數組的結構也不盡相同（即其元素的數量和配置隨時間而改變），所以我無法真正對任何內容進行硬編碼。

Answer 1

我想你的意思是你想：

$ ..書[？（@類& & @ .author & & @。價格& & @ .title僞）