org.json - CDL

CDL 類提供了靜態方法，將逗號分隔文字轉換為 JSONArray，反之亦然。

本範例中涵蓋了以下方法。

• rowToJSONArray(String) − 將逗號分隔文字轉換為 JSONArray 物件。

• rowToString(JSONArray) − 將 JSONArray 轉換為逗號分隔文字。

• toJSONArray(String) − 將多行逗號分隔文字轉換為 JSONArray 物件的物件。

• toJSONArray(JSONArray, String) − 將 JSONArray 物件和逗號分隔文字轉換為 JSONArray 物件。

範例

import org.json.CDL;
import org.json.JSONArray;
import org.json.JSONTokener;

public class JSONDemo {
   public static void main(String[] args) {
      String csvData = "INDIA, UK, USA";

      //Case 1: CSV to JSON Array 
      JSONArray jsonArray = CDL.rowToJSONArray(new JSONTokener(csvData));        
      System.out.println(jsonArray);

      //Case 2: JSONArray to CSV        
      System.out.println(CDL.rowToString(jsonArray));

      //Case 3: CSV to JSONArray of Objects
      csvData = "empId, name, age \n" +
         "1, Mark, 22 \n" +
         "2, Robert, 35 \n" +
         "3, Julia, 18";
      System.out.println(CDL.toJSONArray(csvData));

      //Case 4: CSV without header        
      jsonArray = new JSONArray();
      jsonArray.put("empId");
      jsonArray.put("name");
      jsonArray.put("age");
      csvData = "1, Mark, 22 \n" + "2, Robert, 35 \n" + "3, Julia, 18";
      System.out.println(CDL.toJSONArray(jsonArray,csvData));
   }
}

輸出

["INDIA","UK","USA"]
INDIA,UK,USA

[{"name":"Mark","empId":"1","age":"22"},
   {"name":"Robert","empId":"2","age":"35"},
   {"name":"Julia","empId":"3","age":"18"}]
[{"name":"Mark","empId":"1","age":"22"},
   {"name":"Robert","empId":"2","age":"35"},
   {"name":"Julia","empId":"3","age":"18"}]