Java -fastjson api

chuangzhou發表於2024-04-05
JavaASTJSONAPI

構造 json 物件

需求：構造以下請求體

{
  "attrSelectionVO": [
    {
      "attrAccessId": "eea99a0894504a2b89f3cfeb4be051d3",
      "attrValueList": [
        {
          "attrValue": "輸送型",
          "attrValueAccessId": "52d54de77b224cc8b5f9af647c938b10",
        }
      ],
      "attributeName": "皮帶形狀",
      "constraintCondition": 1,
      "mergedRangeParamValue": null,
      "paramName": null,
      "paramValue": null,
      "selectionSort": 2,
      "type": 0
    }
  ],
  "categoryCode": "C02"
}

實現方式一：

@Test
    public  void test01(){
        JSONObject requBody = new JSONObject();
        JSONArray attrSelectionVOArray = new JSONArray();
        requBody.put("attrSelectionVO", attrSelectionVOArray);
        requBody.put("categoryCode","C02");

        JSONObject attrSelectionVOEle = new JSONObject();
        attrSelectionVOEle.put("attrAccessId", "eea99a0894504a2b89f3cfeb4be051d3");

        JSONArray attrValueListArray = new JSONArray();
        JSONObject attrValueListEle = new JSONObject();
        attrValueListEle.put("attrValue", "輸送型");
        attrValueListEle.put("attrValueAccessId", "52d54de77b224cc8b5f9af647c938b10");
        attrValueListArray.add(attrValueListEle);
        attrSelectionVOEle.put("attrValueList", attrValueListArray);

        attrSelectionVOEle.put("attributeName", "皮帶形狀");
        attrSelectionVOEle.put("constraintCondition", 1);
        attrSelectionVOEle.put("mergedRangeParamValue", null);
        attrSelectionVOEle.put("paramName", "null");
        attrSelectionVOEle.put("paramValue", "null");
        attrSelectionVOEle.put("type", 0);
        
        attrSelectionVOArray.add(attrSelectionVOEle);
        System.out.println(requBody.toJSONString());
    }

實現方式二：

    @Test
    public  void test02(){
        JSONObject requBody = new JSONObject();
        JSONArray attrSelectionVOArray = requBody.putArray("attrSelectionVO");
        requBody.put("categoryCode","C02");

        JSONObject attrSelectionVOEle = attrSelectionVOArray.addObject();
        attrSelectionVOEle.put("attrAccessId", "eea99a0894504a2b89f3cfeb4be051d3");

        JSONArray attrValueListArray = attrSelectionVOEle.putArray("attrValueList");
        JSONObject attrValueListEle = attrValueListArray.addObject();

        attrValueListEle.put("attrValue", "輸送型");
        attrValueListEle.put("attrValueAccessId", "52d54de77b224cc8b5f9af647c938b10");

        attrSelectionVOEle.put("attributeName", "皮帶形狀");
        attrSelectionVOEle.put("constraintCondition", 1);
        attrSelectionVOEle.put("mergedRangeParamValue", null);
        attrSelectionVOEle.put("paramName", "null");
        attrSelectionVOEle.put("paramValue", "null");
        attrSelectionVOEle.put("type", 0);

        System.out.println(requBody.toJSONString());
    }

總結：

方式二的 putArray() 及 putObject() 可以在呼叫物件上返回一個空的 JSONArray 和 空的JSONObject，讓我們不再去new物件及關注何時做對映，比方式一靈活

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