[英]IdHTTPServer and IdHTTP with Encoding UTF8
I am testing a localhost server using TIdHTTPServer
and TIdHTTP
. 我正在使用TIdHTTPServer
和TIdHTTP
测试本地主机服务器。 I am having problems with encoding UTF8 data. 我在编码UTF8数据时遇到问题。
client side: 客户端:
procedure TForm1.SpeedButton1Click(Sender: TObject);
var
res: string;
begin
res:=IdHTTP1.Get('http://localhost/?msg=đi chơi thôi');
Memo1.Lines.Add(res);
end;
Server side: 服务器端:
procedure TForm1.OnCommandGet(AContext: TIdContext;
ARequestInfo: TIdHTTPRequestInfo; AResponseInfo: TIdHTTPResponseInfo);
begin
Memo1.Lines.Add(ARequestInfo.Params.Values['msg']); // ?i ch?i th?i
AResponseInfo.CharSet := 'utf-8';
AResponseInfo.ContentText := 'chào các bạn'; // chào các b?n
end;
I want to send đi chơi thôi
and receive chào các bạn
. 我想发送đi chơi thôi
并接收chào các bạn
。 But the server receives ?i ch?i th?i
and the client receives chào các b?n
. 但是,服务器收到?i ch?i th?i
和客户端接收chào các b?n
。
Can anyone help me? 谁能帮我?
TIdHTTP
transmits the URL exactly as you give it, but http://localhost/?msg=đi chơi thôi
is not a valid URL that can be transmitted as-is, as URLs can only contain ASCII characters. TIdHTTP
完全按照您TIdHTTP
传输URL,但是http://localhost/?msg=đi chơi thôi
不是可以原样传输的有效URL,因为URL仅包含ASCII字符。 Unreserved ASCII characters can be used as-is, but reserved and non-ASCII characters MUST be charset-encoded into bytes and then those bytes must be url-encoded in %HH
format, eg: 可以按原样使用未保留的ASCII字符,但是必须将保留和非ASCII字符进行字符集编码为字节,然后必须将这些字节以%HH
格式进行url编码,例如:
IdHTTP1.Get('http://localhost/?msg=%C4%91i%20ch%C6%A1i%20th%C3%B4i');
You must ensure you pass only valid url-encoded URLs to TIdHTTP
. 您必须确保仅将有效的URL编码URL传递给TIdHTTP
。
In this example, the URL is hard-coded, but if you need something more dynamic then use the TIdURI
class, eg: 在此示例中,URL是硬编码的,但是如果您需要更动态的TIdURI
,请使用TIdURI
类,例如:
IdHTTP1.Get('http://localhost/?msg=' + TIdURI.ParamsEncode('đi chơi thôi'));
TIdHTTPServer
will then decode the parameter data as you are expecting. 然后, TIdHTTPServer
将按照您的期望对参数数据进行解码。 Both TIdURI
and TIdHTTPServer
use UTF-8 by default. 默认情况下, TIdURI
和TIdHTTPServer
使用UTF-8。
When sending a response, you are only setting a CharSet
, but you are not setting a ContentType
. 发送响应时,仅设置CharSet
,而不设置ContentType
。 So TIdHTTPServer
will set the ContentType
to 'text/html; charset=ISO-8859-1'
因此TIdHTTPServer
会将ContentType
设置为'text/html; charset=ISO-8859-1'
'text/html; charset=ISO-8859-1'
, overwriting your CharSet
. 'text/html; charset=ISO-8859-1'
,覆盖您的CharSet
。 You need to explicitly set the ContentType
yourself so you can specify a custom CharSet
, eg: 您需要自己明确设置ContentType
以便可以指定自定义CharSet
,例如:
AResponseInfo.ContentType := 'text/plain';
AResponseInfo.CharSet := 'utf-8';
AResponseInfo.ContentText := 'chào các bạn';
Or: 要么:
AResponseInfo.ContentType := 'text/plain; charset=utf-8';
AResponseInfo.ContentText := 'chào các bạn';
On a side note, TIdHTTPServer
is a multi-threaded component. 附带说明一下, TIdHTTPServer
是一个多线程组件。 The OnCommand...
events are fired in the context of a worker thread, not the main UI thread. OnCommand...
事件是在辅助线程而不是主UI线程的上下文中触发的。 So accessing Memo1
directly like you are is not thread-safe. 因此,像您Memo1
直接访问Memo1
并不是线程安全的。 You MUST synchronize with the main UI thread in order to access UI controls safely, eg: 您必须与主UI线程同步,以便安全地访问UI控件,例如:
procedure TForm1.OnCommandGet(AContext: TIdContext; ARequestInfo: TIdHTTPRequestInfo; AResponseInfo: TIdHTTPResponseInfo);
var
msg: string;
begin
msg := ARequestInfo.Params.Values['msg'];
TThread.Synchronize(nil,
procedure
begin
Memo1.Lines.Add(msg);
end
);
...
end;
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