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///将Bitmap位图转化为base64字符串function BitmapToString(img:TBitmap):string ;var ms:TMemoryStream; ss:TStringStream; s:string;begin ms := TMemoryStream.Create; img.SaveToStream(ms,',','); ss := TStringStream.Create('',',','); ms.Position:=0; EncodeStream(ms,ss,',',');//将内存流编码为base64字符流 s:=ss.DataString; ms.Free; ss.Free; result:=s; end;
///将base64字符串转化为Bitmap位图function StringToBitmap(imgStr:string):TBitmap;var ss:TStringStream; ms:TMemoryStream; bitmap:TBitmap;begin ss := TStringStream.Create(imgStr,',','); ms := TMemoryStream.Create; DecodeStream(ss,ms,',',');//将base64字符流还原为内存流 ms.Position:=0; bitmap := TBitmap.Create; bitmap.LoadFromStream(ms,',','); ss.Free; ms.Free; result :=bitmap;end;
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