Question

我想使用json对象抓取chrome书签。我想要做的是从1个文件夹中获取所有书签。这就是json的结构：

{
   "checksum": "d499848083c2c2e3a38f547da4cbad7c",
   "roots": {
      "bookmark_bar": {
         "children": [ {
            "children": [ {
               "url": "https://www.example.com/"
            }, {
               "url": "https://www.another-example.com/"
            } ],
            "name": "foo",
         } ],
         "name": "Menu bookmarks",
      },
      "other": {
         "name": "Another bookmarks",
      },
      "synced": {
         "name": "Phone bookmarks",
      }
   },
   "version": 1
}

在这种情况下，我想从文件夹foo获取网址。我正在使用Json.NET将字符串转换为对象。这段代码：

    string input = File.ReadAllText(bookmarksLocation);
    using (StringReader reader = new StringReader(input))
    using (JsonReader jsonReader = new JsonTextReader(reader)) {
        JsonSerializer serializer = new JsonSerializer();
        var o = (JToken)serializer.Deserialize(jsonReader);
        var allChildrens = o["roots"]["bookmark_bar"]["children"];

        var fooFolder = allChildrens.Where(x => x["name"].ToString() == "foo");

        foreach (var item in fooFolder["children"]) {
            Console.WriteLine(item["url"].ToString());
        }
        Console.ReadKey();
    }

给我一个错误： Cannot apply indexing with [] to an expression of type 'IEnumerable<JToken>'

你能告诉我我做错了吗？

Answer 1

缺少1个循环：

var fooFolder = allChildrens.Where(x => x["name"].ToString() == "foo");
foreach (var folder in fooFolder)
{
    foreach (var item in folder["children"])
    {
        Console.WriteLine(item["url"].ToString());
    } 
}

从json获取chrome书签

1 个答案: