Example usage for org.apache.http.client.utils URIUtils rewriteURI

Introduction

In this page you can find the example usage for org.apache.http.client.utils URIUtils rewriteURI.

Prototype

public static URI rewriteURI(final URI uri) throws URISyntaxException 

Source Link

Document

A convenience method that creates a new URI whose scheme, host, port, path, query are taken from the existing URI, dropping any fragment or user-information.

Usage

From source file:org.apache.nutch.protocol.httpclient.HttpClientRedirectStrategy.java

public URI getLocationURI(final HttpRequest request, final HttpResponse response, final HttpContext context)
        throws ProtocolException {
    if (request == null) {
        throw new IllegalArgumentException("HTTP request may not be null");
    }/*from  www . j  av  a2 s  .com*/
    if (response == null) {
        throw new IllegalArgumentException("HTTP response may not be null");
    }
    if (context == null) {
        throw new IllegalArgumentException("HTTP context may not be null");
    }
    //get the location header to find out where to redirect to
    Header locationHeader = response.getFirstHeader("location");
    if (locationHeader == null) {
        // got a redirect response, but no location header
        throw new ProtocolException(
                "Received redirect response " + response.getStatusLine() + " but no location header");
    }
    String location = locationHeader.getValue();
    if (this.log.isDebugEnabled()) {
        this.log.debug("Redirect requested to location '" + location + "'");
    }

    URI uri = createLocationURI(location);

    HttpParams params = request.getParams();
    // rfc2616 demands the location value be a complete URI
    // Location       = "Location" ":" absoluteURI
    try {
        // Drop fragment
        uri = URIUtils.rewriteURI(uri);
        if (!uri.isAbsolute()) {
            if (params.isParameterTrue(ClientPNames.REJECT_RELATIVE_REDIRECT)) {
                throw new ProtocolException("Relative redirect location '" + uri + "' not allowed");
            }
            // Adjust location URI
            HttpHost target = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
            if (target == null) {
                throw new IllegalStateException("Target host not available " + "in the HTTP context");
            }
            URI requestURI = new URI(request.getRequestLine().getUri());
            URI absoluteRequestURI = URIUtils.rewriteURI(requestURI, target, true);
            uri = URIUtils.resolve(absoluteRequestURI, uri);
        }
    } catch (URISyntaxException ex) {
        throw new ProtocolException(ex.getMessage(), ex);
    }

    RedirectLocations redirectLocations = (RedirectLocations) context.getAttribute(REDIRECT_LOCATIONS);
    if (redirectLocations == null) {
        redirectLocations = new RedirectLocations();
        context.setAttribute(REDIRECT_LOCATIONS, redirectLocations);
    }
    if (params.isParameterFalse(ClientPNames.ALLOW_CIRCULAR_REDIRECTS)) {
        if (redirectLocations.contains(uri)) {
            throw new CircularRedirectException("Circular redirect to '" + uri + "'");
        }
    }
    redirectLocations.add(uri);
    return uri;
}

---