Org Json 简明教程

org.json - CDL

CDL 类提供了将逗号分隔文本转换为 JSONArray,反之亦然,的静态方法。

以下方法在示例中介绍。

  1. rowToJSONArray(String) − 将逗号分隔文本转换为 JSONArray 对象。

  2. rowToString(JSONArray) − 将 JSONArray 转换为逗号分隔文本。

  3. toJSONArray(String) − 将多行逗号分隔文本转换为 JSONArray 对象的对象。

  4. toJSONArray(JSONArray, String) − 将 JSONArray 对象和逗号分隔文本转换为 JSONArray 对象。

Example

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));
   }
}

Output

["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"}]