macrolen 给了这样一些数据, 说是用淘宝的 API 获取的 JSON 数据, 让我帮助解析:
把这些数据保存在: c:\temp\json.txt; 然后在窗体上放一个 Memo 和四个 Button ...
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Memo1: TMemo;
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
procedure FormCreate(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
uses SuperObject;
var jo: ISuperObject;
//载入并建立对象
procedure TForm1.FormCreate(Sender: TObject);
const
JsonPath = 'c:\temp\json.txt';
begin
Assert(FileExists(JsonPath), '文件不存在');
with TStringList.Create do
begin
LoadFromFile('c:\temp\json.txt');
jo := SO(Text);
Free;
end;
end;
//按格式查看所有
procedure TForm1.Button1Click(Sender: TObject);
begin
Memo1.Text := jo.AsJSon(True, False);
end;
//查看: items_search_response.item_search.item_categories
procedure TForm1.Button2Click(Sender: TObject);
begin
Memo1.Text := jo['items_search_response.item_search.item_categories'].AsJSon(True, False);
end;
//查看: items_search_response.item_search.items
procedure TForm1.Button3Click(Sender: TObject);
begin
Memo1.Text := jo['items_search_response.item_search.items'].AsJSon(True, False);
end;
//遍历 items_search_response.item_search.items.item 数组中的指定元素
procedure TForm1.Button4Click(Sender: TObject);
var
ja: TSuperArray;
i: Integer;
begin
ja := jo['items_search_response.item_search.items.item'].AsArray;
Memo1.Clear;
for i := 0 to ja.Length - 1 do
begin
Memo1.Lines.Add(ja.O[i].Format('%cid%; %location.state%; %location.city%'));
end;
end;
end.
另外 SuperObject 当前的最新版本是: SuperObjectv1.2.3, 还没有测试它新增的功能, 不过我这个是用它做的.