网上找到的用xml传输图片
发布时间:2020-12-16 08:42:27 所属栏目:百科 来源:网络整理
导读:先记下来,试过后如果可用,就保留下来。 用到ZLIB和base64 ProcedureStrToBmpStream(v:OleVariant;VarStream:TMemoryStream); Var Str:String; MS1:TStringStream; MS2:TMemoryStream; Begin IfVarIsNull(v)ThenExit; Str:=VarToStr(v); IfStr=''ThenExit;
先记下来,试过后如果可用,就保留下来。
用到ZLIB和base64 ProcedureStrToBmpStream(v:OleVariant;VarStream:TMemoryStream);Var Str:String; MS1:TStringStream; MS2:TMemoryStream; Begin IfVarIsNull(v)ThenExit; Str:=VarToStr(v); IfStr=''ThenExit; MS1:=TStringStream.Create(Str); MS2:=TMemoryStream.Create; Base64DeCodeStream(MS1,MS2); MS2.Position:=0; ZDecompressStream(MS2,Stream); Stream.Position:=0; FreeAndNil(MS2); FreeAndNil(MS1); End; FunctionBmpStreamToStr(Stream:TMemoryStream):String; MS1:TMemoryStream; MS2:TStringStream; MS1:=TMemoryStream.Create; MS2:=TStringStream.Create(''); ZCompressStream(Stream,MS1,zcMax); MS1.Position:=0; Base64EnCodeStream(MS1,245)">Result:=MS2.DataString; ms:=TMemoryStream.Create; StrToBmpStream('这里是BASE64编码的字符',ms); image1.Picture.Bitmap.LoadFromStream(ms); MS.Clear; image1.Picture.Bitmap.SaveToStream(MS); str:=BmpStreamToStr(MS) 将字符保存到XML即可 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |