使用TRoleAuth类对DataSnap服务端的接口授权

使用Troleauth类，一种类似注视的代码进行授权，也是最简单和方便的方式，实现如下：

unit ServerMethodsUnit1;

interface

uses System.SysUtils, System.Classes, System.Json,
    Datasnap.DSServer, Datasnap.DSAuth, DataSnap.DSProviderDataModuleAdapter;

type
  TServerMethods1 = class(TDSServerModule)
  private
    { Private declarations }
  public
    { Public declarations }
    [TRoleAuth(‘AdminGroup‘,‘GuestGroup‘)]
    function EchoString(Value: string): string;

    [TRoleAuth(‘GuestGroup‘,‘AdminGroup‘)]
    function ReverseString(Value: string): string;
  end;

implementation

{$R *.dfm}

uses System.StrUtils;

function TServerMethods1.EchoString(Value: string): string;
begin
  Result := Value;
end;

function TServerMethods1.ReverseString(Value: string): string;
begin
  Result := System.StrUtils.ReverseString(Value);
end;

end.

编译环境：Delphi XE7

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