Trying to Redirect. 302 Error. HTTP CLIENT 4.1.1
Edited:- Updated One
What's wrong with this code. Now I am getting error on setRedirectStrategy as
The method setRedirectStrategy(new DefaultRedirectStrategy(){}) is undefined for the type DefaultHttpClient
and error on DefaultRedirectStrategy as
DefaultRedirectStrategy cannot be resolved to a type
and error on super as the same as above one
DefaultRedirectStrategy cannot be resolved to a type
And I am trying t开发者_运维技巧o redirect as I am always getting 302 error. So is this the right way to do it. Any example will be appreciated..
<%@ page language="java" import="org.apache.http.client.methods.HttpUriRequest,org.apache.http.client.methods.HttpGet,org.apache.http.protocol.HttpContext,org.apache.http.impl.client.DefaultHttpClient,org.apache.http.HttpResponse,org.apache.http.HttpRequest,java.io.OutputStream,java.net.HttpURLConnection,java.net.URL,java.util.Collection,org.apache.commons.httpclient.Credentials,org.apache.commons.httpclient.auth.AuthenticationException,org.apache.commons.httpclient.auth.MalformedChallengeException,org.apache.commons.httpclient.params.DefaultHttpParams,org.apache.commons.httpclient.params.HttpParams,org.apache.commons.httpclient.auth.AuthScheme,org.apache.commons.httpclient.auth.AuthPolicy,org.apache.commons.httpclient.HttpClient,org.apache.commons.httpclient.UsernamePasswordCredentials,org.apache.commons.httpclient.auth.AuthScope,org.apache.commons.httpclient.methods.GetMethod,org.w3c.dom.*,javax.xml.parsers.DocumentBuilder,javax.xml.parsers.DocumentBuilderFactory,java.net.*,java.io.*" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%
String a_Url = request.getParameter( "url" ) ;
URL url = new URL (a_Url);
String encoding = new String(
org.apache.commons.codec.binary.Base64.encodeBase64
(org.apache.commons.codec.binary.StringUtils.getBytesUtf8("test:test"))
);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setDoOutput(true);
connection.setRequestProperty ("Authorization", "Basic " + encoding);
InputStream content = (InputStream)connection.getInputStream();
BufferedReader in =
new BufferedReader (new InputStreamReader (content));
String line;
while ((line = in.readLine()) != null) {
out.println(line);
}
%>
<%
DefaultHttpClient httpclient = new DefaultHttpClient();
httpclient.setRedirectStrategy(new DefaultRedirectStrategy() {
public boolean isRedirected(HttpRequest request, HttpResponse response, HttpContext context) {
boolean isRedirect=false;
try {
isRedirect = super.isRedirected(request, response, context);
} catch (ProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (!isRedirect) {
int responseCode = response.getStatusLine().getStatusCode();
if (responseCode == 301 || responseCode == 302) {
return true;
}
}
return false;
}
});
%>
I think it's quite simple: you're missing HttpContext in your import statement at the top of this code block. Add org.apache.http.protocol.HttpContext
somewhere in the comma-separated import
list.
As for whether this is the right way to do it, what's it? Can you say more about your application?
I think you can use
final DefaultRedirectStrategy instance =new LaxRedirectStrategy();
httpClientBuilder.setRedirectStrategy(instance);
if you just want to override 302
精彩评论