JSON 之 SuperObject(2): 构建方式与 AsJSon

SuperObject 构建一个 JSON 的常用方法: 从字符串、从文件、从流.

---

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    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;

const JsonStr = '{"No1":"张三", "No2":"李四"}';

//从字符串构建
procedure TForm1.Button1Click(Sender: TObject);
var
  jo: ISuperObject;
begin
  jo := SO(JsonStr);
  {或者用使用下面语句, SO 函数就是调用了 TSuperObject.ParseString}
  //jo := TSuperObject.ParseString(JsonStr);
  ShowMessage(jo.AsJSon(True, False));
end;

//从文件构建
procedure TForm1.Button2Click(Sender: TObject);
const
  path = 'c:\temp\json.txt';
var
  jo: ISuperObject;
begin
  {产生个测试文件; SuperObject 对中文支持也不太好, 读取它自己保存的文件吧}
  SO(JsonStr).SaveTo(path); {这就产生并保存了 json 文件}

  jo := TSuperObject.ParseFile(path);
  ShowMessage(jo.AsJSon(True, False));
end;

//从流构建
procedure TForm1.Button3Click(Sender: TObject);
var
  jo: ISuperObject;
  stm: TStream;
  b: Byte;
begin
  {模拟个测试流; 看看它能接受的编码够原始的, 它存取文件也是如此}
  stm := TStringStream.Create('{"No2":"\u674e\u56db","No1":"\u5f20\u4e09"}');

  jo := TSuperObject.ParseStream(stm);
  ShowMessage(jo.AsJSon(True, False));

  stm.Free;
end;

//AsJSon 的参数
procedure TForm1.Button4Click(Sender: TObject);
var
  jo: ISuperObject;
begin
  jo := SO(JsonStr);

  ShowMessage(jo.AsJSon);
  ShowMessage(jo.AsJSon(True));
  ShowMessage(jo.AsJSon(True, False));
  ShowMessage(jo.AsJSon(False, False));
end;

end.