sqlite中有一种数据类型叫做Blob,可以满足我们的要求。
数据库中照片字段Photo BLOB
写入:
var
SqliteDB: TSQLiteDatabase;
FS: TFileStream;
begin
SqliteDB:=TSQLiteDatabase.Create('database.db');
FS := TFileStream.Create('test.jpeg',fmOpenRead);
SqliteDB.UpdateBlob('UPDATE PhotoLib set Photo = ? WHERE ID = 1',FS);
FS.free;
SqliteDB.Free;
end;
读取至TImage控件显示:
SqliteDB:=TSQLiteDatabase.Create('database.db');
SqliteTB:=SqliteDB.GetTable('Select * From PhotoLib Where Id=1');
MS := SqliteTB.FieldAsBlob(SqliteTB.FieldIndex['photo']);
if (MS = nil) then
begin
showmessage('无照片记录.');
exit;
end;
MS.Position := 0;
PIC := TJPEGImage.Create;
PIC.LoadFromStream(ms);
self.Image2.Picture.Graphic := PIC;
MS.free;
PIC.Free;
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