泛型数组 + 记录类型 + Json 之间的转换

unit Unit3;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, System.Generics.Collections;

type
  TForm3 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form3: TForm3;

/// <summary>
/// 这里注意必须在interface部分声明.
/// </summary>
type TRen = record
  name: string;
  age: Integer;
end;

implementation

{$R *.dfm}

uses qjson;

procedure TForm3.Button1Click(Sender: TObject);
const
  MyJson: string = '[{"name":"群主","age":100},{"name":"老衲","age":100}]';
var
  MyRenAry: TArray<TRen>;
  MyQj: TQJson;
begin
  MyQj := TQJson.Create;
  try
    //---------------------------------------
    MyQj.Parse(MyJson);
    MyQj.ToRtti(@MyRenAry,TypeInfo(TArray<TRen>));

    ShowMessage(MyRenAry[0].name);

    //---------------------------------------
    MyQj.FromRtti(@MyRenAry,TypeInfo(TArray<TRen>));
    ShowMessage(MyQj.AsJson);
  finally
    MyQj.Free;
  end;
end;

end.