Question

"order_item" : [{"price":"250.00","product_code":"1","quantity":"2","
total":"500.00"},
{"price":"200.00","product_**code":"2","quantity":"1","**total":"200.00"} ]
}

我必须将我的哈希地图数组列表转换为上面的json数组格式。在我的数组列表的第一个位置，我的设置如price = 250.00，product_code = 1，quantity = 2，total：500.00，在我的第二个位置价格= 60.00，product_code = 55，数量= 10，总数：600.00等等。他们中的任何人都知道答案帮帮我。

Answer 1

public class Product 
{
   private String price;

   private String product_code;

   private String quantity;

   private int total;

   public Product(String price, String product_code, String quantity, int total)
   {
      this.price = price;
      this.product_code = product_code;
      this.quantity = quantity;
      this.total = total;
   }
}

业务逻辑

new Gson().toJson(map);

使用

      Product pr1 = new Product("str1", "str1", "str1", 250);
      Product pr2 = new Product("str2", "str2", "str2", 200);
      List<Product> list = new ArrayList<Product>();
      list.add(pr1);
      list.add(pr2);
      Map<String, List<Product>> map = new HashMap<String, List<Product>>();
      map.put("order_item", list);

      System.out.println(new Gson().toJson(map));

编辑（使用json.org）

      Map<String, String> jsonMap1 = new HashMap<String, String>();
      jsonMap1.put("price", "250.00");
      jsonMap1.put("product_code", "1");
      jsonMap1.put("quantity", "2");
      jsonMap1.put("total", "200");
      Map<String, String> jsonMap2 = new HashMap<String, String>();
      jsonMap2.put("price", "250.00");
      jsonMap2.put("product_code", "1");
      jsonMap2.put("quantity", "2");
      jsonMap2.put("total", "200");

      JSONObject json1 = new JSONObject(jsonMap1);
      JSONObject json2 = new JSONObject(jsonMap2);

      JSONArray array = new JSONArray();
      array.put(json1);
      array.put(json2);

      JSONObject finalObject = new JSONObject();
      finalObject.put("order_item", array);

      System.out.println(finalObject.toString());

EDIT2 （使用Gson）

      Map<String, String> jsonMap1 = new HashMap<String, String>();
      jsonMap1.put("price", "250.00");
      jsonMap1.put("product_code", "1");
      jsonMap1.put("quantity", "2");
      jsonMap1.put("total", "200");
      Map<String, String> jsonMap2 = new HashMap<String, String>();
      jsonMap2.put("price", "250.00");
      jsonMap2.put("product_code", "1");
      jsonMap2.put("quantity", "2");
      jsonMap2.put("total", "200");
      List<Map<String, String>> list = new ArrayList<Map<String, String>>();
      list.add(jsonMap1);
      list.add(jsonMap2);
      Map<String, List<Map<String, String>>> map = new HashMap<String, List<Map<String, String>>>();
      map.put("order_item", list);

      System.out.println(new Gson().toJson(map));

哈希地图数组列表到android中的JSON数组？

1 个答案: