Gson解碼php編碼Json

Question

我正在使用PHP生成從數據庫查詢中抓取的Json。結果是這樣的：

[ 
    { 
     "title":"Title 1", 
     "description":"This is description 1", 
     "add_date":"2013-07-17 10:07:53" 
    },{ 
     "title":"Title 2", 
     "description":"This is description 2", 
     "add_date":"2013-07-17 10:07:53" 
    } 
] 

我使用GSON分析數據，如下所示：

public class Search{ 

    public Search(String text){ 
     try{ 

      // Snipped (gets the data from the website) 

      Gson json = new Gson(); 
      Map<String, Event> events = json.fromJson(resultstring, new TypeToken<Map<String, Event>>(){}.getType()); 

      System.out.print(events.get("description")); 

     }catch(IOException ex){ 
      Logger.getLogger(Search.class.getName()).log(Level.SEVERE, null, ex); 
     } 

    } 
} 

class Event { 
    private String description; 
} 

這裏是試圖運行的代碼，我得到消息：

Exception in thread "AWT-EventQueue-0" com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 3

我將如何循環通過每一個獲得值description或title或兩者兼而有之？

Answer 1

你在做什麼，你應該是好幾個更正去：

class Event { 
    private String description; 
    private String title; 
    @SerializedName("add_date") private String addDate; 

    public getDescription() { 
     return description; 
    } 
} 


public Search(String text){ 
    try{ 

     // Snipped (gets the data from the website) 

     Gson json = new Gson(); 
     Event[] events = json.fromJson(resultstring, Event[].class); 

     System.out.print(events[0].getDescription()); 

    }catch(IOException ex){ 
     Logger.getLogger(Search.class.getName()).log(Level.SEVERE, null, ex); 
    } 

} 

我糾正了bean類和改變你轉換到（的Event數組是什麼類型的，因爲這是你實際上是從PHP服務中獲得的）;