JSONArray被覆蓋

Question

我使用simple-json

我正在嘗試爲jqgrid創建JSON對象。數據被添加但正確但第二條記錄被覆蓋。

ArrayList resList = connect.statement_query(sql, para); 

      jsonObject = new JSONObject(); 

      jsonObject.put("total", resList.size()/para.length); 
      jsonObject.put("page", 1); 
      jsonObject.put("records", resList.size()/para.length); 

      JSONArray cellArray = new JSONArray(); 
      JSONArray cell = new JSONArray(); 
      JSONObject cellObj = new JSONObject(); 

      for (int i = 0; i < resList.size(); i += para.length) { 
       cellObj.put("id", resList.get(i)); 

       JSONArray temp=new JSONArray(); 
       temp.add(resList.get(i)); 
       temp.add(resList.get(i + 1)); 
       temp.add(resList.get(i + 2)); 
       temp.add(resList.get(i + 3)); 
       temp.add(resList.get(i + 4)); 

       cell=temp; 
       cellObj.put("cell", cell); 
       System.out.println("Cell Obj: "+cellObj.toJSONString()); 
       cellArray.add(cellObj); 
       System.out.println("Cell Array: "+cellArray.toJSONString()); 
       //cellObj.clear(); 
       temp.clear(); 
      } 
      System.out.println("Cell Array-Out: "+cellArray); 
      jsonObject.put("rows", cellArray); 

結果出來爲：

Cell Obj: {"id":"1000","cell":["1000","BE6K","vshekhar","2014-06-02","N\/A"]} 
Cell Array: [{"id":"1000","cell":["1000","BE6K","vshekhar","2014-06-02","N\/A"]}] 
Cell Obj: {"id":"1001","cell":["1001","BOA","maahamad","2013-05-01","N\/A"]} 
Cell Array: [{"id":"1001","cell":["1001","BOA","maahamad","2013-05-01","N\/A"]},{"id":"1001","cell":["1001","BOA","maahamad","2013-05-01","N\/A"]}] 
Cell Array-Out: [{"id":"1001","cell":[]},{"id":"1001","cell":[]}] 

1. 爲什麼單元陣列覆蓋掉上第二個記錄？爲什麼它會空出的圈？如何克服它？

Answer 1

1）爲對象獲得了寫 -

您需要reintialize cellObj在for循環。對於（int i = 0; i < resList.size（）; i + =參數長度）{
cellObj = new JSONObject（）;

2）對於細胞得到空出 -

您通過清除臨時 'temp.clear（）;'單元對象正在引用temp，並且temp被清除，這就是您獲取空白數據的原因。

您可以刪除temp.clear（）代碼。