IdTCPClient 发送消息包含中文的变成乱码,麻烦看下我这个代码
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, RzPrgres, StdCtrls, IdBaseComponent, IdComponent, IdTCPConnection,
IdTCPClient, ExtCtrls, XPMan, ComCtrls, Buttons;
type
TForm1 = class(TForm)
XPManifest1: TXPManifest;
tmrCheckServerMsg: TTimer;
IdTCPClient: TIdTCPClient;
mmoinfo: TMemo;
Edtmsg: TEdit;
btnDisconect: TButton;
btnConnect: TButton;
pbProgress1: TRzProgressBar;
pbProgress: TProgressBar;
BitBtn1: TBitBtn;
procedure btnDisconectClick(Sender: TObject);
procedure EdtmsgKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
procedure btnConnectClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure IdTCPClientWork(ASender: TObject; AWorkMode: TWorkMode;
AWorkCount: Int64);
procedure tmrCheckServerMsgTimer(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
uses TypInfo;
{$R *.dfm}
procedure TForm1.btnConnectClick(Sender: TObject);
var
Response: string;
UserName: string;
name:pchar;len:dword;
begin
len:=30;
getmem(name,30);
getcomputername(name,len);
IdTCPClient.ConnectTimeout := 5000;
IdTCPClient.Connect;
username:=name;
//UserName := Format('U%.5d', [Random(99999)]);
IdTCPClient.IOHandler.WriteLn(UserName);
Response := IdTCPClient.IOHandler.ReadLn;
if SameText(Response, 'LOGINED') then
begin
btnDisconect.Enabled := True;
btnConnect.Enabled := False;
tmrCheckServerMsg.Enabled := True;
Caption := 'Client - ' + UserName;
end
else raise Exception.CreateFmt('登录失败: "%s"', [Response]);
end;
procedure TForm1.btnDisconectClick(Sender: TObject);
begin
btnConnect.Enabled:=True;
btnDisconect.Enabled:=False;
tmrCheckServerMsg.Enabled:=False;
Caption:='Client';
IdTCPClient.Disconnect;
end;
procedure TForm1.EdtmsgKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
if Key=VK_RETURN then
begin
if not IdTCPClient.Connected then Exit;
if edtMsg.Text<>''then
begin
IdTCPClient.IOHandler.WriteLn(edtMsg.Text);
//edtmsg.Text:= EnCodeUTF8(edtMsg.Text);
mmoInfo.Lines.Add(Format('发送消息:"%s"',[edtMsg.Text]));
edtMsg.Clear;
end;
Key:=0;
end;
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
try
if IdTCPClient.Connected then
btnDisconect.Click;
except
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Randomize;
IdTCPClient.Host:='127.0.0.1';
IdTCPClient.Port:=7982;
end;
procedure TForm1.FormShow(Sender: TObject);
begin
form1.btnConnect.Click;
end;
procedure TForm1.IdTCPClientWork(ASender: TObject; AWorkMode: TWorkMode;
AWorkCount: Int64);
begin
//
pbProgress.Position:=AWorkCount;
Application.ProcessMessages;
end;
type
TSizeType = (stB, stK, stM, stG, stT);
function FormatFileSize(Size: Extended; MaxSizeType: TSizeType; var ReturnSizeType: TSizeType;
const IncludeComma: Boolean = True): string; overload;
const
FormatStr: array[Boolean] of string = ('0.##', '#,##0.##'); {do not localize}
var
DivCount: Integer;
begin
ReturnSizeType := stB;
DivCount := 0;
while (Size >= 1024) and (ReturnSizeType <> MaxSizeType) do
begin
Size := Size / 1024;
Inc(DivCount);
case DivCount of
1: ReturnSizeType := stK;
2: ReturnSizeType := stM;
3: ReturnSizeType := stG;
4: ReturnSizeType := stT;
end;
end;
Result := FormatFloat(FormatStr[IncludeComma], Size);
end;
function FormatFileSize(Size:Extended;MaxSizeType:TSizeType;
constIncludeComma:Boolean=True):string;overload;
resourcestring
RSC_BYTE='字节';
var
ReturnSt:TSizeType;
begin
Result:=FormatFileSize(Size,stT,ReturnSt,True)+''+
Copy(GetEnumName(TypeInfo(TSizeType),Ord(ReturnSt)),3,1);
if ReturnSt=stB then
begin
Delete(Result,Length(Result),1);
Result:=Result+RSC_BYTE;
end
else
Result:=Result+'B';{donotlocalize}
end;
procedure TForm1.tmrCheckServerMsgTimer(Sender: TObject);
var
CmdStr:string;
FSize:Int64;
FStream:TFileStream;
SaveFileName:string;
begin
CmdStr:='';
if IdTCPClient.Connected then
begin
IdTCPClient.IOHandler.CheckForDataOnSource(250);
if not IdTCPClient.IOHandler.InputBufferIsEmpty then
begin
tmrCheckServerMsg.Enabled:=False;
try
// CmdStr:=IdTCPClient.IOHandler.ReadLn(enUTF8);
CmdStr := IdTCPClient.IOHandler.ReadLn;
CmdStr:=System.UTF8Encode(CmdStr);
if SameText(Copy(CmdStr,1,4),'FILE')then
begin
SaveFileName:=Trim(Copy(CmdStr,5,Length(CmdStr)));
mmoInfo.Lines.Add('准备接收文件....');
IdTCPClient.IOHandler.WriteLn('SIZE');
FSize:=IdTCPClient.IOHandler.ReadInt64(False);
if FSize>0 then
begin
pbProgress.Max:=FSize;
pbProgress.Position:=0;
mmoInfo.Lines.Add('文件大小 =' + FormatFileSize(FSize, stK) + '; 正在接收中...');
IdTCPClient.IOHandler.WriteLn('READY');
while True do
begin
if FileExists(ExtractFilePath(ParamStr(0))+SaveFileName)then
SaveFileName:='~'+SaveFileName
else Break;
end;
FStream:=TFileStream.Create(ExtractFilePath(ParamStr(0))
+SaveFileName,
fmCreate);
try
IdTCPClient.IOHandler.LargeStream:=True;
IdTCPClient.IOHandler.ReadStream(FStream,FSize);
IdTCPClient.IOHandler.LargeStream:=False;
IdTCPClient.IOHandler.WriteLn('OK');
if IdTCPClient.IOHandler.ReadLn='DONE' then
mmoInfo.Lines.Add('接收成功！')
finally
FStream.Free;
end;
end
else begin
mmoInfo.Lines.Add('接收失败！');
IdTCPClient.IOHandler.WriteLn('CANCEL');
end;
end
else
mmoInfo.Lines.Add('接收文本信息:'+CmdStr)
finally
tmrCheckServerMsg.Enabled:=True;
end;
end;
end;
end;
end.
收到的消息 中文部分为 '????' 是怎么回事, 麻烦哪位高手指教一下我这个 代码
新手分不多 ,见谅
[解决办法]
编码处理，网络传输二进制流 必须编码 有可能丢失数据
base64编码 后 传输，接收后解码
[解决办法]
服务端与客户端统一编码。
服务端：
cmdstr := AContext.Connection.IOHandler.ReadLn(TEncoding.UTF8);
AContext.Connection.IOHandler.WriteLn('我是中国人', TEncoding.UTF8);
客户端：
IOHandler.WriteLn(cmd, TEncoding.UTF8);
s := IOHandler.ReadLn(TEncoding.UTF8);
