org.apache.http.client.RedirectHandler#org.apache.http.client.UserTokenHandler源码实例Demo

@Override
protected RequestDirector createClientRequestDirector(
    HttpRequestExecutor requestExec,
    ClientConnectionManager conman,
    ConnectionReuseStrategy reustrat,
    ConnectionKeepAliveStrategy kastrat,
    HttpRoutePlanner rouplan,
    HttpProcessor httpProcessor,
    HttpRequestRetryHandler retryHandler,
    RedirectHandler redirectHandler,
    AuthenticationHandler targetAuthHandler,
    AuthenticationHandler proxyAuthHandler,
    UserTokenHandler stateHandler,
    HttpParams params) {
  return new RequestDirector() {
    @Beta
    public HttpResponse execute(HttpHost target, HttpRequest request, HttpContext context)
        throws HttpException, IOException {
      return new BasicHttpResponse(HttpVersion.HTTP_1_1, responseCode, null);
    }
  };
}
 

@Override
public DefaultHttpClient create(final HttpMethod method, final URI uri) {
  final DefaultHttpClient httpClient = super.create(method, uri);

  httpClient.setUserTokenHandler(new UserTokenHandler() {

    @Override
    public Object getUserToken(final HttpContext context) {
      return context.getAttribute("my-token");
    }

  });

  return httpClient;
}
 

@Override
protected RequestDirector createClientRequestDirector(
        final HttpRequestExecutor requestExec,
        final ClientConnectionManager conman,
        final ConnectionReuseStrategy reustrat,
        final ConnectionKeepAliveStrategy kastrat,
        final HttpRoutePlanner rouplan,
        final HttpProcessor httpProcessor,
        final HttpRequestRetryHandler retryHandler,
        final RedirectHandler redirectHandler,
        final AuthenticationHandler targetAuthHandler,
        final AuthenticationHandler proxyAuthHandler,
        final UserTokenHandler stateHandler,
        final HttpParams params) {
    return new LibRequestDirector(
            requestExec,
            conman,
            reustrat,
            kastrat,
            rouplan,
            httpProcessor,
            retryHandler,
            redirectHandler,
            targetAuthHandler,
            proxyAuthHandler,
            stateHandler,
            params);
}
 

public void setUserTokenHandler(UserTokenHandler userTokenHandler) {
    this.userTokenHandler = userTokenHandler;
}
 

public LibRequestDirector(
        final HttpRequestExecutor requestExec,
        final ClientConnectionManager conman,
        final ConnectionReuseStrategy reustrat,
        final ConnectionKeepAliveStrategy kastrat,
        final HttpRoutePlanner rouplan,
        final HttpProcessor httpProcessor,
        final HttpRequestRetryHandler retryHandler,
        final RedirectHandler redirectHandler,
        final AuthenticationHandler targetAuthHandler,
        final AuthenticationHandler proxyAuthHandler,
        final UserTokenHandler userTokenHandler,
        final HttpParams params) {

    if (requestExec == null) {
        throw new IllegalArgumentException("Request executor may not be null.");
    }
    if (conman == null) {
        throw new IllegalArgumentException("Client connection manager may not be null.");
    }
    if (reustrat == null) {
        throw new IllegalArgumentException("Connection reuse strategy may not be null.");
    }
    if (kastrat == null) {
        throw new IllegalArgumentException("Connection keep alive strategy may not be null.");
    }
    if (rouplan == null) {
        throw new IllegalArgumentException("Route planner may not be null.");
    }
    if (httpProcessor == null) {
        throw new IllegalArgumentException("HTTP protocol processor may not be null.");
    }
    if (retryHandler == null) {
        throw new IllegalArgumentException("HTTP request retry handler may not be null.");
    }
    if (redirectHandler == null) {
        throw new IllegalArgumentException("Redirect handler may not be null.");
    }
    if (targetAuthHandler == null) {
        throw new IllegalArgumentException("Target authentication handler may not be null.");
    }
    if (proxyAuthHandler == null) {
        throw new IllegalArgumentException("Proxy authentication handler may not be null.");
    }
    if (userTokenHandler == null) {
        throw new IllegalArgumentException("User token handler may not be null.");
    }
    if (params == null) {
        throw new IllegalArgumentException("HTTP parameters may not be null");
    }
    this.requestExec       = requestExec;
    this.connManager       = conman;
    this.reuseStrategy     = reustrat;
    this.keepAliveStrategy = kastrat;
    this.routePlanner      = rouplan;
    this.httpProcessor     = httpProcessor;
    this.retryHandler      = retryHandler;
    this.redirectHandler   = redirectHandler;
    this.targetAuthHandler = targetAuthHandler;
    this.proxyAuthHandler  = proxyAuthHandler;
    this.userTokenHandler  = userTokenHandler;
    this.params            = params;

    this.managedConn       = null;

    this.execCount = 0;
    this.redirectCount = 0;
    this.maxRedirects = this.params.getIntParameter(ClientPNames.MAX_REDIRECTS, 100);
    this.targetAuthState = new AuthState();
    this.proxyAuthState = new AuthState();
}