打个比方,接口获取到的数据如下:
{
"code": 0,
"msg": "成功",
"data": {
"items": [
{
"id": "640266",
"title": "外交部驻港公署驳卡梅伦：殖民旧梦可以休矣",
"pic": "https://i.guancha.cn/news/2024/03/20/20240320074402499.jpg",
"summary": "",
"show_type": 13,
"special": null,
"news_time": "2小时前",
"news_type": 1,
"comment_num": 86,
"author": null,
"user": {
"id": "",
"nick": "齐倩",
"pic": "",
"level_icon": ""
},
"url": "",
"view_count": 93748,
"view_count_text": "93748",
"hot": false,
"hot_comment": "为空"
},
{
"id": "640266",
"title": "外交部驻港公署驳卡梅伦：殖民旧梦可以休矣",
"pic": "https://i.guancha.cn/news/2024/03/20/20240320074402499.jpg",
"summary": "",
"show_type": 13,
"special": {
"id": "XiangGang",
"name": "香港"
},
"news_time": "2小时前",
"news_type": 1,
"comment_num": 86,
"author": {
"id": "andelie",
"name": "安德烈·科尔图诺夫",
"pic": "https://i.guancha.cn/authors/andelie/20220524105234640.png",
"description": "俄罗斯国际事务委员会学术委员会主任",
"is_more": false
},
"user": {
"id": "",
"nick": "齐倩",
"pic": "",
"level_icon": ""
},
"url": "",
"view_count": 93748,
"view_count_text": "93748",
"hot": false,
"hot_comment": "为空"
}
]
}
}
不难发现,个别参数比如special本来正常返回是字典,但是有时候返回却是null,这样在使用JsonToDart进行转换的时候就容易报错,如果嵌套很深的话会更难改
所以个人建议,类似字典数组这种格式,找一个字典最齐全的那个进行补全,然后再去转换,这样就不会报错,修改如下:
{
"code": 0,
"msg": "成功",
"data": {
"items": [
{
"id": "640266",
"title": "外交部驻港公署驳卡梅伦：殖民旧梦可以休矣",
"pic": "https://i.guancha.cn/news/2024/03/20/20240320074402499.jpg",
"summary": "",
"show_type": 13,
"special": {
"id": "XiangGang",
"name": "香港"
},
"news_time": "2小时前",
"news_type": 1,
"comment_num": 86,
"author": {
"id": "andelie",
"name": "安德烈·科尔图诺夫",
"pic": "https://i.guancha.cn/authors/andelie/20220524105234640.png",
"description": "俄罗斯国际事务委员会学术委员会主任",
"is_more": false
},
"user": {
"id": "",
"nick": "齐倩",
"pic": "",
"level_icon": ""
},
"url": "",
"view_count": 93748,
"view_count_text": "93748",
"hot": false,
"hot_comment": "为空"
}
]
}
}
JsonToDart:www.geekailab.com/io/tools/js…
Json格式化:www.json.cn/
Json在线编辑:www.bejson.com/jsoneditoro…
