org.apache.http.impl.client.HttpClientBuilder#setDefaultConnectionConfig()源码实例Demo

public static CloseableHttpClient newClient(int timeout) {
	HttpClientBuilder builder = HttpClients.custom();
	builder.useSystemProperties();
	builder.addInterceptorFirst(REMOVE_INCORRECT_CONTENT_ENCODING);
	builder.disableAutomaticRetries();

	builder.setSSLContext(SSL_CONTEXT);
	builder.setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE);

	RequestConfig.Builder configBuilder = RequestConfig.custom();
	configBuilder.setCookieSpec(CookieSpecs.IGNORE_COOKIES);
	configBuilder.setSocketTimeout(timeout);
	configBuilder.setConnectTimeout(timeout);
	configBuilder.setConnectionRequestTimeout(timeout);
	builder.setDefaultRequestConfig(configBuilder.build());

	builder.setDefaultConnectionConfig(ConnectionConfig.custom().setCharset(Consts.ISO_8859_1).build());

	return builder.build();
}
 

/**
 * Create http client based on connection manager.
 *
 * @param connectionManager The connection manager setting http client.
 * @return Http client based on connection manager.
 */
private CloseableHttpClient createHttpClient(HttpClientConnectionManager connectionManager) {
    HttpClientBuilder builder =
            HttpClients.custom().setConnectionManager(connectionManager).disableAutomaticRetries();

    int socketBufferSizeInBytes = this.config.getSocketBufferSizeInBytes();
    if (socketBufferSizeInBytes > 0) {
        builder.setDefaultConnectionConfig(
                ConnectionConfig.custom().setBufferSize(socketBufferSizeInBytes).build());
    }

    return builder.build();
}
 

/**
 * Get client.
 *
 * @return the client
 */
private synchronized CloseableHttpClient getClient() {
    if (client == null) {
        RequestConfig.Builder requestBuilder = RequestConfig.custom();
        requestBuilder.setConnectTimeout(connectionTimeout);

        ConnectionConfig.Builder connBuilder = ConnectionConfig.custom();
        connBuilder.setCharset(Charset.forName(getContentCharset()));

        // Create and initialize scheme registry
        RegistryBuilder<ConnectionSocketFactory> builder = RegistryBuilder.create();
        builder.register("http", getPlainFactory());
        builder.register("https", getSslFactory());
        Registry<ConnectionSocketFactory> registry = builder.build();

        HttpClientConnectionManager hccm = createClientConnectionManager(registry);

        HttpClientBuilder clientBuilder = HttpClients.custom();
        clientBuilder.setDefaultRequestConfig(requestBuilder.build());
        clientBuilder.setDefaultConnectionConfig(connBuilder.build());
        clientBuilder.setConnectionManager(hccm);

        client = clientBuilder.build();
    }

    return client;
}
 

/**
 * @param proxy    Proxy configuration
 * @param listener Log listener
 * @param prompt   Prompt for proxy credentials
 * @return Builder for HTTP client
 */
public HttpClientBuilder build(final Proxy proxy, final TranscriptListener listener, final LoginCallback prompt) {
    final HttpClientBuilder configuration = HttpClients.custom();
    // Use HTTP Connect proxy implementation provided here instead of
    // relying on internal proxy support in socket factory
    switch(proxy.getType()) {
        case HTTP:
        case HTTPS:
            final HttpHost h = new HttpHost(proxy.getHostname(), proxy.getPort(), Scheme.http.name());
            if(log.isInfoEnabled()) {
                log.info(String.format("Setup proxy %s", h));
            }
            configuration.setProxy(h);
            configuration.setProxyAuthenticationStrategy(new CallbackProxyAuthenticationStrategy(ProxyCredentialsStoreFactory.get(), host, prompt));
            break;
    }
    configuration.setUserAgent(new PreferencesUseragentProvider().get());
    final int timeout = preferences.getInteger("connection.timeout.seconds") * 1000;
    configuration.setDefaultSocketConfig(SocketConfig.custom()
        .setTcpNoDelay(true)
        .setSoTimeout(timeout)
        .build());
    configuration.setDefaultRequestConfig(this.createRequestConfig(timeout));
    configuration.setDefaultConnectionConfig(ConnectionConfig.custom()
        .setBufferSize(preferences.getInteger("http.socket.buffer"))
        .setCharset(Charset.forName(host.getEncoding()))
        .build());
    if(preferences.getBoolean("http.connections.reuse")) {
        configuration.setConnectionReuseStrategy(new DefaultClientConnectionReuseStrategy());
    }
    else {
        configuration.setConnectionReuseStrategy(new NoConnectionReuseStrategy());
    }
    configuration.setRetryHandler(new ExtendedHttpRequestRetryHandler(preferences.getInteger("http.connections.retry")));
    configuration.setServiceUnavailableRetryStrategy(new DisabledServiceUnavailableRetryStrategy());
    if(!preferences.getBoolean("http.compression.enable")) {
        configuration.disableContentCompression();
    }
    configuration.setRequestExecutor(new LoggingHttpRequestExecutor(listener));
    // Always register HTTP for possible use with proxy. Contains a number of protocol properties such as the
    // default port and the socket factory to be used to create the java.net.Socket instances for the given protocol
    configuration.setConnectionManager(this.createConnectionManager(this.createRegistry()));
    configuration.setDefaultAuthSchemeRegistry(RegistryBuilder.<AuthSchemeProvider>create()
        .register(AuthSchemes.BASIC, new BasicSchemeFactory(
            Charset.forName(preferences.getProperty("http.credentials.charset"))))
        .register(AuthSchemes.DIGEST, new DigestSchemeFactory(
            Charset.forName(preferences.getProperty("http.credentials.charset"))))
        .register(AuthSchemes.NTLM, preferences.getBoolean("webdav.ntlm.windows.authentication.enable") && WinHttpClients.isWinAuthAvailable() ?
            new BackportWindowsNTLMSchemeFactory(null) :
            new NTLMSchemeFactory())
        .register(AuthSchemes.SPNEGO, preferences.getBoolean("webdav.ntlm.windows.authentication.enable") && WinHttpClients.isWinAuthAvailable() ?
            new BackportWindowsNegotiateSchemeFactory(null) :
            new SPNegoSchemeFactory())
        .register(AuthSchemes.KERBEROS, new KerberosSchemeFactory()).build());
    return configuration;
}