使用JavaScriptSerializer反序列化JSON

Question

我构建了一个导航树,并在数组中使用此函数保存结构

function parseTree(html) {
   var nodes = [];
   html.parent().children("div").each(function () {
      var subtree = $(this).children("div");
      var item = $(this).find(">span");
      if (subtree.size() > 0)
          nodes.push([item.attr("data-pId"), item.attr("data-id"), parseTree(subtree)]);
      else
          nodes.push(item.attr("data-pId"), item.attr("data-id"));
  });
  return nodes;
}

然后我序列化数据

var tree = $.toJSON(parseTree($("#MyTree").children("div")));

获取此数组

[
    ["881150024","881150024",
        [
         "994441819","881150024",
         "214494418","881150024"
        ]
    ],
    ["-256163399","-256163399",
        [
            "977082012","-256163399",
            "-492694206","-256163399",
            [
                "1706814966","-256163399",
                    ["-26481618","-256163399"]
            ]
        ]
    ]
]

并通过ajax发送

             $.ajax({
                url: "Editor/SerializeTree",
                type: "POST",
                data: { tree: tree },
                success: function (result) {
                    alert("OK");
                }
            });

问题:如何在C#中使用JavaScriptSerializer反序列化此JSON？

Answer 1

在这里,你似乎有一个节点数组,每个节点都有一组字符串或另一个节点数组,对吧？你可以做的第一件事就是将其反序列化为List<object>如此:

string treeData = "..."; // The JSON data from the POST
JavaScriptSerializer js = new JavaScriptSerializer();
List<object> tree = js.Deserialize <List<object>>(treeData);

这会将您的JSON转换为对象列表,但您需要手动确定是什么(如果每个对象都是字符串或其他对象List<object>).

但是,通常情况下,使用某种类或结构来表示您为序列化程序提供的数据的"模式"会有所帮助,但它比上面的工作要多一些.

在这种情况下,您需要输入数据是实际的JSON对象而不仅仅是数组.假设你有这个JSON(基于以上数据):

{id: "root", children: [
  {id: "881150024"},
  {id: "881150024", children: [
    {id: "994441819"}, {id: "881150024"}]},
    {id: "-256163399"},
    {id: "-256163399", children: [            
    {id: "-492694206"},
      {id: "-256163399", children: [
        {id: "1706814966"},
        {id: "-256163399", children: [
          {id: "-26481618"}, {id: "-256163399"}]}
]}]}]}

如果您有这样的课程:

public class Node
{
  public String id;
  public List<Node> children;
}

然后你可以这样做:

string treeData = "..."; // The JSON data from the POST
JavaScriptSerializer js = new JavaScriptSerializer();
Node root = js.Deserialize<Node>(treeData);

这将更容易在代码中使用.