Java HttpClientBuilder.setRetryHandler方法代碼示例

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
protected HttpClientBuilder createHttpClientBuilder(SiteConfig siteConfig) {
    HttpClientBuilder httpClientBuilder = HttpClients.custom();

    httpClientBuilder.setConnectionTimeToLive(siteConfig.getConnTimeToLiveMillis(), TimeUnit.MILLISECONDS);
    httpClientBuilder.setMaxConnPerRoute(siteConfig.getMaxConnPerRoute());
    httpClientBuilder.setMaxConnTotal(siteConfig.getMaxConnTotal());
    httpClientBuilder.setUserAgent(siteConfig.getUserAgent());

    httpClientBuilder.setRetryHandler(createHttpRequestRetryHandler());
    httpClientBuilder.setRedirectStrategy(createRedirectStrategy());
    httpClientBuilder.setSSLContext(createSSLContext());
    httpClientBuilder.setSSLHostnameVerifier(createSSLHostnameVerifier());

    httpClientBuilder.setDefaultConnectionConfig(createConnectionConfig(siteConfig));
    httpClientBuilder.setDefaultSocketConfig(createSocketConfig(siteConfig));
    httpClientBuilder.setDefaultCookieSpecRegistry(createCookieSpecRegistry());
    httpClientBuilder.setDefaultCookieStore(createCookieStore());

    return httpClientBuilder;
}
 

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
public RequestEntityRestStorageService(final S3Session session,
                                       final Jets3tProperties properties,
                                       final HttpClientBuilder configuration) {
    super(session.getHost().getCredentials().isAnonymousLogin() ? null :
                    new AWSCredentials(null, null) {
                        @Override
                        public String getAccessKey() {
                            return session.getHost().getCredentials().getUsername();
                        }

                        @Override
                        public String getSecretKey() {
                            return session.getHost().getCredentials().getPassword();
                        }
                    },
            new PreferencesUseragentProvider().get(), null, properties);
    this.session = session;
    configuration.disableContentCompression();
    configuration.setRetryHandler(new S3HttpRequestRetryHandler(this, preferences.getInteger("http.connections.retry")));
    configuration.setRedirectStrategy(new DefaultRedirectStrategy() {
        @Override
        public HttpUriRequest getRedirect(final HttpRequest request, final HttpResponse response, final HttpContext context) throws ProtocolException {
            if(response.containsHeader("x-amz-bucket-region")) {
                final String host = ((HttpUriRequest) request).getURI().getHost();
                if(!StringUtils.equals(session.getHost().getHostname(), host)) {
                    regionEndpointCache.putRegionForBucketName(
                            StringUtils.split(StringUtils.removeEnd(((HttpUriRequest) request).getURI().getHost(), session.getHost().getHostname()), ".")[0],
                            response.getFirstHeader("x-amz-bucket-region").getValue());
                }
            }
            return super.getRedirect(request, response, context);
        }
    });
    this.setHttpClient(configuration.build());
}
 

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
/**
 * springboot初始化restTemplate
 */
@Bean
public RestTemplate initRestTemplate() {
    // 長連接保持30秒
    PoolingHttpClientConnectionManager pollingConnectionManager = new PoolingHttpClientConnectionManager(30, TimeUnit.SECONDS);
    // 總連接數
    pollingConnectionManager.setMaxTotal(1000);
    // 同路由的並發數
    pollingConnectionManager.setDefaultMaxPerRoute(1000);

    HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
    httpClientBuilder.setConnectionManager(pollingConnectionManager);
    // 重試次數，默認是3次，沒有開啟
    httpClientBuilder.setRetryHandler(new DefaultHttpRequestRetryHandler(2, true));
    // 保持長連接配置，需要在頭添加Keep-Alive
    httpClientBuilder.setKeepAliveStrategy(new DefaultConnectionKeepAliveStrategy());

    RequestConfig.Builder builder = RequestConfig.custom();
    builder.setConnectionRequestTimeout(200);
    builder.setConnectTimeout(5000);
    builder.setSocketTimeout(5000);

    RequestConfig requestConfig = builder.build();
    httpClientBuilder.setDefaultRequestConfig(requestConfig);

    List<Header> headers = new ArrayList<>();
    headers.add(new BasicHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.16 Safari/537.36"));
    headers.add(new BasicHeader("Accept-Encoding", "gzip,deflate"));
    headers.add(new BasicHeader("Accept-Language", "zh-CN"));
    headers.add(new BasicHeader("Connection", "Keep-Alive"));

    httpClientBuilder.setDefaultHeaders(headers);

    HttpClient httpClient = httpClientBuilder.build();

    // httpClient連接配置，底層是配置RequestConfig
    HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
    // 連接超時
    clientHttpRequestFactory.setConnectTimeout(5000);
    // 數據讀取超時時間，即SocketTimeout
    clientHttpRequestFactory.setReadTimeout(5000);
    // 連接不夠用的等待時間，不宜過長，必須設置，比如連接不夠用時，時間過長將是災難性的
    clientHttpRequestFactory.setConnectionRequestTimeout(200);
    // 緩衝請求數據，默認值是true。通過POST或者PUT大量發送數據時，建議將此屬性更改為false，以免耗盡內存。
    clientHttpRequestFactory.setBufferRequestBody(false);

    // 添加內容轉換器
    List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
    messageConverters.add(initStringHttpMessageConverter());
    messageConverters.add(new FormHttpMessageConverter());
    messageConverters.add(new MappingJackson2XmlHttpMessageConverter());
    messageConverters.add(new MappingJackson2HttpMessageConverter());

    RestTemplate restTemplate = new RestTemplate(messageConverters);
    restTemplate.setRequestFactory(clientHttpRequestFactory);
    restTemplate.setErrorHandler(new DefaultResponseErrorHandler());
    return restTemplate;

}
 

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
private HttpClientTemplate() {
    // 長連接保持30秒
    PoolingHttpClientConnectionManager pollingConnectionManager = new PoolingHttpClientConnectionManager(timeToLive, TimeUnit.SECONDS);
    // 總連接數
    pollingConnectionManager.setMaxTotal(maxTotal);
    // 同路由的並發數
    pollingConnectionManager.setDefaultMaxPerRoute(defaultMaxPerRoute);
    HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
    httpClientBuilder.setConnectionManager(pollingConnectionManager);
    // 重試次數，默認是3次，沒有開啟
    httpClientBuilder.setRetryHandler(new DefaultHttpRequestRetryHandler(retryCount, requestSentRetryEnabled));
    // 保持長連接配置，需要在頭添加Keep-Alive
    httpClientBuilder.setKeepAliveStrategy(new DefaultConnectionKeepAliveStrategy());

    List<Header> headers = new ArrayList<>();
    // 參考：http://www.cnblogs.com/sink_cup/archive/2011/03/15/http_user_agent.html
    // headers.add(new BasicHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.16 Safari/537.36"));
    // 不需要設置，可能會亂碼，請參考：http://www.crifan.com/set_accept_encoding_header_to_gzip_deflate_return_messy_code/
    // headers.add(new BasicHeader("Accept-Encoding", "gzip,deflate"));
    // headers.add(new BasicHeader("Accept-Language", "zh-CN"));
    headers.add(new BasicHeader("Connection", "Keep-Alive"));
    httpClientBuilder.setDefaultHeaders(headers);
    HttpClient httpClient = httpClientBuilder.build();

    // httpClient連接配置，底層是配置RequestConfig
    HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
    // 連接超時
    clientHttpRequestFactory.setConnectTimeout(connectTimeout);
    // 數據讀取超時時間，即SocketTimeout
    clientHttpRequestFactory.setReadTimeout(readTimeout);
    // 連接不夠用的等待時間，不宜過長，必須設置，比如連接不夠用時，時間過長將是災難性的
    clientHttpRequestFactory.setConnectionRequestTimeout(connectionRequestTimeout);
    // 緩衝請求數據，默認值是true。通過POST或者PUT大量發送數據時，建議將此屬性更改為false，以免耗盡內存。
    if (!bufferRequestBody) {
        clientHttpRequestFactory.setBufferRequestBody(false);
    }
    // 添加內容轉換器
    // List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
    messageConverters.add(new FastJsonHttpMessageConverter());
    messageConverters.add(new StringHttpMessageConverter(Charset.forName(charset)));
    messageConverters.add(new ByteArrayHttpMessageConverter());
    super.setMessageConverters(messageConverters);
    super.setRequestFactory(clientHttpRequestFactory);
    super.setErrorHandler(new DefaultResponseErrorHandler());
}
 

import org.apache.http.impl.client.HttpClientBuilder; //導入方法依賴的package包/類
/**
 * @param listener Log listener
 * @param prompt   Prompt for proxy credentials
 * @return Builder for HTTP client
 */
public HttpClientBuilder build(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
    final Proxy proxy = proxyFinder.find(host);
    switch(proxy.getType()) {
        case HTTP:
        case HTTPS:
            final HttpHost h = new HttpHost(proxy.getHostname(), proxy.getPort(), StringUtils.lowerCase(proxy.getType().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));
    final String encoding;
    if(null == host.getEncoding()) {
        encoding = preferences.getProperty("browser.charset.encoding");
    }
    else {
        encoding = host.getEncoding();
    }
    configuration.setDefaultConnectionConfig(ConnectionConfig.custom()
        .setBufferSize(preferences.getInteger("http.socket.buffer"))
        .setCharset(Charset.forName(encoding))
        .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, new NTLMSchemeFactory())
        .register(AuthSchemes.SPNEGO, new SPNegoSchemeFactory())
        .register(AuthSchemes.KERBEROS, new KerberosSchemeFactory()).build());
    return configuration;
}