如何避免使用HttpClient 4.1.1的循環重定向。由於我得到的錯誤是這樣的: -避免使用HttpClient的循環重定向4.1.1
executing requestGET http://home.somehost.com/Mynet/pages/cHome.xhtml HTTP/1.1
org.apache.http.client.ClientProtocolException
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:822)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
at edu.uci.ics.crawler4j.url.WebURL.setURL(WebURL.java:122)
at edu.uci.ics.crawler4j.crawler.CrawlController.addSeed(CrawlController.java:207)
at edu.uci.ics.crawler4j.example.advanced.Controller.main(Controller.java:31)
Caused by: org.apache.http.client.CircularRedirectException: Circular redirect to 'http://home.somehost.com/Mynet/pages/Home.xhtml'
at org.apache.http.impl.client.DefaultRedirectStrategy.getLocationURI(DefaultRedirectStrategy.java:168)
at org.apache.http.impl.client.DefaultRedirectStrategy.getRedirect(DefaultRedirectStrategy.java:193)
at org.apache.http.impl.client.DefaultRequestDirector.handleResponse(DefaultRequestDirector.java:1021)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:482)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
這是我的代碼...
DefaultHttpClient client = null;
try
{
// Set url
//URI uri = new URI(url.toString());
client = new DefaultHttpClient();
client.getCredentialsProvider().setCredentials(
new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT, AuthScope.ANY_REALM),
new UsernamePasswordCredentials("test", "test"));
URL url1 = new URL (url);
HttpURLConnection connection = (HttpURLConnection) url1.openConnection();
connection.setFollowRedirects(false);
HttpGet request = new HttpGet(url);
final HttpParams params = new BasicHttpParams();
HttpClientParams.setRedirecting(params, false);
HttpContext context = new BasicHttpContext();
System.out.println("----------------------------------------");
System.out.println("executing request" + request.getRequestLine());
HttpResponse response = client.execute(request, context);
HttpEntity entity = response.getEntity();
System.out.println(response.getStatusLine());
InputStream content = entity.getContent();
BufferedReader in =
new BufferedReader (new InputStreamReader (content));
String line;
while ((line = in.readLine()) != null) {
// System.out.println(line);
}
} catch(Exception e) {
e.printStackTrace();
}
你確定你能避免呢?如果確實存在循環重寫,拋出異常似乎是一種合理的方式來表明這一點。 – nos
@nos感謝回答回來..我得到相同的URL回圓形重定向。但是,如果我在瀏覽器上輸入該網址,那麼我會從服務器獲得三次具有相同網址的回覆。首先是302移動節奏。第二是302發現,第三是200好..與相同的網址...我想抓住這個網址的內容。 – ferhan