【Java】+获取JSON串key名称及key对应值的类型

修改json指定路径的值：https://blog.csdn.net/liupeifeng3514/article/details/79180154

代码：

    public static void main(String[] args) {
        String str = "{"bussDatas":[{"fieldDesc":"string","isSelected":0,"optionType":0,"optionValue":"string","orderNum":0,"placeHolder":"string"}],"moduleName":"string","packageId":"string","techDatas":{"fieldDesc":"string","isSelected":0,"optionType":0,"optionValue":"string","orderNum":0,"placeHolder":"string"}}
";
        JSONObject jsonObject = JSONObject.parseObject(str);

        // 格式化输出JSON
        String pretty = JSON.toJSONString(jsonObject, SerializerFeature.PrettyFormat, SerializerFeature.WriteMapNullValue, SerializerFeature.WriteDateUseDateFormat);
        System.out.println(String.format("原始JSON：
%s", pretty));

        // 获取JSON第一层所有的key
        Set<String> keys = jsonObject.keySet();
        // 获取第一层每个key对应的值 的类型
        for (String key : keys) {
            System.out.println(String.format("%s(key)：%s(值类型)", key, jsonObject.get(key).getClass().getSimpleName()));
        }
    }

输出：