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JSON数据转换总结（VIP典藏版）

2022-08-01 14:16:00 【托尼老师呀】

一、测试数据

private static String getJsonData() {
        return "{\n" +
                "    \"companyNo\": \"C001\",\n" +
                "    \"supplyNo\": \"S001\",\n" +
                "    \"orders\": [\n" +
                "        {\n" +
                "            \"orderNo\": \"aaa001\",\n" +
                "            \"orderType\": \"order001\",\n" +
                "            \"orderAmount\": \"100\",\n" +
                "            \"creatorDate\": \"20020505\",\n" +
                "            \"invoiceAmount\": \"500\",\n" +
                "            \"openItemAmount\": \"700\"\n" +
                "        },\n" +
                "        {\n" +
                "            \"orderNo\": \"ccc002\",\n" +
                "            \"orderType\": \"order002\",\n" +
                "            \"orderAmount\": \"600\",\n" +
                "            \"creatorDate\": \"20010506\",\n" +
                "            \"invoiceAmount\": \"123\",\n" +
                "            \"openItemAmount\": \"456\"\n" +
                "        }\n" +
                "    ]\n" +
                "}";
    }

二、Str、JSONObject、JSONArray等互转

private static void json2json(String reqString) {
        reqString = "".equals(reqString) ? null : reqString;
        //string转object对象
        JSONObject reqJson = JSONObject.parseObject(reqString);
        //获取对应字段
        String companyNo = reqJson.getString("companyNo");
        //JSONObject转JSONArray
        String orders = reqJson.getString("orders");
        JSONArray jsonArray = JSONArray.parseArray(orders);

        //jsonObject-json互转
        JSON json = reqJson.getObject("orders", JSON.class);
        String str = json.toJSONString();
        JSONObject jsonObject = JSONObject.parseObject(str);
        JSONArray jsonArray2 = JSONArray.parseArray(str);
        JSONArray dealArray = dealArray(jsonArray);
        System.out.println(reqJson);

    }

三、数据遍历、不规则数据整理

//遍历，处理不规则数据
    private static JSONArray dealArray(JSONArray array) {
        JSONArray array2 = new JSONArray();
        for (int i = 0; i < array.size(); i++) {
            JSONObject json = array.getJSONObject(i);
            JSONObject jsonObject = new JSONObject();
            for (String key : json.keySet()) {
                jsonObject.put(key, json.get(key).toString().trim());
            }
            array2.add(jsonObject);
        }
        return array2;
    }