Dear all,
I've got a little progress about the parsing content problem.
Finally I find out that if I don't copy the "User-Agent" request header from
the original request to the contentexchange, I could be able to parse the
response content from the back end server correctly. Codes are as follows:
// copy headers
boolean xForwardedFor = false;
boolean hasContent = false;
long contentLength = -1;
Enumeration<?> enm = request.getHeaderNames();
while (enm.hasMoreElements()) {
// TODO could be better than this!
String hdr = (String) enm.nextElement();
String lhdr = hdr.toLowerCase();
String value=request.getHeader(hdr);
System.out.println("HeaderName:["+hdr+"] Value:["+value+"]");
if (_DontProxyHeaders.contains(lhdr))
continue;
if (connectionHdr != null
&& connectionHdr.indexOf(lhdr) >= 0)
continue;
if (_hostHeader != null && "host".equals(lhdr))
continue;
if ("user-agent".equals(lhdr))
continue;
if ("content-type".equals(lhdr))
hasContent = true;
else if ("content-length".equals(lhdr)) {
contentLength = request.getContentLength();
exchange.setRequestHeader(HttpHeaders.CONTENT_LENGTH,Long.toString(contentLength));
if (contentLength > 0)
hasContent = true;
//add here
continue;
} else if ("x-forwarded-for".equals(lhdr))
xForwardedFor = true;
Enumeration<?> vals = request.getHeaders(hdr);
while (vals.hasMoreElements()) {
String val = (String) vals.nextElement();
if (val != null) {
if (debug != 0)
_log.debug(debug + " " + hdr + ": " + val);
exchange.setRequestHeader(hdr, val);
}
}
}
But if I don't copy "User-Agent" request header to exchange, I got new
problems. The browser couldn't receive the response content.
Do anyone knows how to solve this problem?
Thank you very much.
Regards!
Santa
2011/3/22 黄志兰 <[email protected]>
> Dear all,
> Sorry for bothering. I'm new in jetty. Now I'm working on a task, I have to
> change jetty ProxyServlet a little bit. So as to make it availbale for our
> whole project.
> What I have to do is to change the content that Jetty Proxy get from the
> backend server. And forward it back to the client.
> I got problem when doing this. It seem that the byte array that I get from
> ContentExchange couldn't transfer to String correctly.
> I've try the following codes:
> ContentExchange exchange = new ContentExchange() {
> protected void onResponseComplete() throws IOException {
> super.onResponseComplete();
> //do something with the response content
> String responseContent = this.getResponseContent();
> System.out.println(responseContent); // this prints messy code in
> console.
> byte[] responseContentBytes = this.getResponseContentBytes();
> System.out.println(new String (responseContentBytes,"UTF-8")); //
> Still prints out messy code, the html's charset is UTF-8
> }
>
>
> I test the following code in my developing environment, it works well:
> public static void main1(String[] args) throws Exception {
> HttpClient httpClient = new HttpClient();
> // set up httpClient
> httpClient.start();
> ContentExchange contentExchange = new ContentExchange();
> httpClient.setConnectorType(HttpClient.CONNECTOR_SELECT_CHANNEL);
>
> contentExchange.setURL("http://www.google.com.hk";);
> httpClient.send(contentExchange);
> contentExchange.waitForDone();
> System.err.println("Response status: "
> + contentExchange.getResponseStatus());
> byte[] responseContentBytes =
> contentExchange.getResponseContentBytes();
> System.out.println(new String (responseContentBytes,"UTF-8"));
> }
>
> So, my question is: what cause the messy code problem? How can I resolve
> the response content from ContentExchange's getResponseContentBytes() or
> getResponseContent() correctly?
>
> Thanks very much!
> Regards!
> Santa
>
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