遍历目录读取CSV

unit U_QRCodeToDB;

interface

uses
  Classes,IniFiles,SysUtils,StrUtils,ADODB,activex;

type
  TQRCodeToDB = class(TThread)
  private
    { Private declarations }

    Function GetSetDirectory(): string;   //取得INI文件设置的扫描结果目录
    procedure FindFile(Dir: String);  //遍历查找文件
    procedure ReadFile(FileName : String); //读取文件内容
    function  GetLastTime(Part_no:string):string; //取得最晚的时间
    procedure WriteToDB(sTime,QRCode,Result:string);  //将数据写入DB中
    var WorkID : string;
  protected
    procedure Execute; override;
  end;

implementation

{ QRCodeToDB }

procedure TQRCodeToDB.Execute;
begin
  { Place thread code here }
  while not Terminated do
  begin
    FindFile(GetSetDirectory()+'\');
    sleep(10000);//定时
  end;
end;

procedure TQRCodeToDB.FindFile(Dir: String);
var
  SearchRec: TSearchRec;
  find: Integer;
begin
  //查找目录所有文件
  find:= FindFirst(Dir + '*.*', faAnyFile, SearchRec);
  while find = 0 do
    begin
      if(SearchRec.Name <> '.') and (SearchRec.Name <> '..') then
        if(Searchrec.Attr <> faDirectory) then
          //过滤后缀名文件，采用字符串处理函数SameText和截取函数RightStr
          begin
            IF samestr(LeftStr(SearchRec.Name, 6) , FormatDateTime('YYMMDD',Now())) Then
            begin
              ReadFile(Dir+SearchRec.Name);
            end;
          end
        else
          begin
            //递归查找子目录的文件
            FindFile(Dir + SearchRec.Name + '\');
          end;

    find:= FindNext(SearchRec);
    end;
  //释放资源
  FindClose(SearchRec);
end;

function TQRCodeToDB.GetLastTime(Part_no: string): string;
var
  myQry : TADOQuery;
  maxTime : string;
  myConnect : TADOConnection;
begin
  try
    CoInitialize(nil);  //初始化COM空间
    myConnect := TADOConnection.Create(nil);
    myQry := TADOQuery.Create(nil);

    myConnect.ConnectionTimeout := 15;
    myConnect.ConnectOptions :=  coConnectUnspecified;
    myConnect.ConnectionString := 'Provider=SQLOLEDB.1;Password=336699;Persist Security Info=True;User ID=sa;Initial Catalog=XX_SCAN;Data Source=192.168.118.50';
    try
      myConnect.Connected := True;
    except
      myConnect.Connected := False;
      maxTime := '24:00:01';
    end;

    if myConnect.Connected then
    begin
      myQry.Connection := myConnect;
      myQry.SQL.Add('Select max(sTime) From DK_FunctionTest_Tab Where sDate = convert(char(6),getdate(),12) ');
      myQry.SQL.Add(' and left(QRCode,9)= :vQRCode and WorkID = :vWorkID');
      myQry.Parameters.ParamByName('vQRCode').Value := part_no;
      myQry.Parameters.ParamByName('vWorkID').Value := WorkID;
      myQry.Open;
      maxTime := myQry.Fields[0].AsString;
    end;
  finally
    FreeAndNil(myQry);
    FreeAndNil(myConnect);
    CoUninitialize();
    Result := maxTime;
  end;
end;

function TQRCodeToDB.GetSetDirectory: string;
var
  MyINIFile : TIniFile;
  MyIniPath : string;
  LoadDirectory : string;
begin
  try
    MyIniPath := ExtractFilePath(ParamStr(0)) + 'QRCode.INI';
    MyINIFile := TIniFile.Create(MyIniPath);
    LoadDirectory := MyINIFile.ReadString('Directory','LoadDirectory','');
    WorkID  := MyINIFile.ReadString('Directory','WorkID','');
  finally
    FreeAndNil(MyINIFile);
    Result := LoadDirectory;
  end;

end;

procedure TQRCodeToDB.ReadFile(FileName: String);
var
   sFile,sLine: TStrings;
   r:Integer;
   sTime,QRCode,Result: string;
   maxTime : string;

  FileStream: TFileStream;

begin
  try
   sFile := TStringList.Create;
   FileStream:=TFileStream.Create(FileName,fmShareDenyNone);
   sFile.LoadFromStream(FileStream);
   sLine := TStringList.Create;

    for r:=1 to sFile.Count-1 do    //从第二行起，第一行为标题
    begin
      sLine.CommaText := sFile[r];
      sTime :=  sLine[0];
      QRCode := sLine[1];
      Result := sLine[2];
      if r = 1 then
        maxTime := GetLastTime(copy(QRCode,1,9));
      if ( (maxTime < sTime) or (maxTime = '') ) And (Length(QRCode)> 9) then
        WriteToDB(sTime, QRCode, Result);  //存入DB中

    end;

  finally
    FreeAndNil(FileStream);
    FreeAndNil(sLine);
    FreeAndNil(sFile);
  end;

end;

procedure TQRCodeToDB.WriteToDB(sTime, QRCode, Result: string);
var
  myQry : TADOQuery;
  myConnect : TADOConnection;
begin
   try
    CoInitialize(nil);  //初始化COM空间
    myConnect := TADOConnection.Create(nil);
    myQry := TADOQuery.Create(nil);

    myConnect.ConnectionTimeout := 15;
    myConnect.ConnectOptions :=  coConnectUnspecified;
    myConnect.ConnectionString := 'Provider=SQLOLEDB.1;Password=336699;Persist Security Info=True;User ID=sa;Initial Catalog=XX_SCAN;Data Source=192.168.118.50';
      try
        myConnect.Connected := True;
      except
        myConnect.Connected := False;
      end;

    if myConnect.Connected then
    begin
      myQry.Connection := myConnect;
      myQry.SQL.Add('INSERT INTO DK_FunctionTest_Tab(sTime,QRCode,sResult,WorkID,sDate) ');
      myQry.SQL.Add('values( :vTime,:vCode,:vResult,:vWorkID, convert(char(6),getdate(),12) ) ');
      myQry.Parameters.ParamByName('vTime').Value := sTime;
      myQry.Parameters.ParamByName('vCode').Value := QRCode;
      myQry.Parameters.ParamByName('vResult').Value := Result;
      myQry.Parameters.ParamByName('vWorkID').Value := WorkID;
      myQry.ExecSQL;
    end;
   finally
    freeAndNil(myQry);
    freeAndNil(myConnect);
    CoUninitialize();
   end;

end;

end.