httpclient/RestTemplate,asynchttpclient设置忽略https，ssl证书

1、全局设置（版本4.5）

static {        disableSslVerification();    }    private static void disableSslVerification() {        try{            // Create a trust manager that does not validate certificate chains            TrustManager[] trustAllCerts = new TrustManager[] {new X509TrustManager() {                public X509Certificate[] getAcceptedIssuers() {                    return null;                }                public void checkClientTrusted(X509Certificate[] certs, String authType) {                }                public void checkServerTrusted(X509Certificate[] certs, String authType) {                }            }            };            // Install the all-trusting trust manager            SSLContext sc = SSLContext.getInstance("SSL");            sc.init(null, trustAllCerts, new java.security.SecureRandom());            HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());            // Create all-trusting host name verifier            HostnameVerifier allHostsValid = new HostnameVerifier() {                public boolean verify(String hostname, SSLSession session) {                    return true;                }            };            // Install the all-trusting host verifier            HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);        } catch (NoSuchAlgorithmException e) {            e.printStackTrace();        } catch (KeyManagementException e) {            e.printStackTrace();        }    }

2、局部设置（版本：4.5）

RestTemplate restTemplate = new RestTemplate();TrustStrategy acceptingTrustStrategy = new TrustStrategy() {@Overridepublic boolean isTrusted(X509Certificate[] arg0, String arg1)throws CertificateException {return true;}};SSLContext sslContext = SSLContexts.custom()        .loadTrustMaterial(null, acceptingTrustStrategy)        .build();SSLConnectionSocketFactory sf = new SSLConnectionSocketFactory(sslContext, new NoopHostnameVerifier());Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()                .register("http", PlainConnectionSocketFactory.getSocketFactory())                .register("https", sf)                .build();PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);connectionManager.setMaxTotal(DEFAULT_MAX_TOTAL_CONNECTIONS);connectionManager.setDefaultMaxPerRoute(DEFAULT_MAX_CONNECTIONS_PER_ROUTE);connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost("facebook.com")), 20);connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost("twitter.com")), 20);connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost("linkedin.com")), 20);connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost("viadeo.com")), 20);RequestConfig config = RequestConfig.custom().setConnectTimeout(DEFAULT_CONNECT_TIMEOUT_MILLISECONDS).setSocketTimeout(DEFAULT_SOCKET_TIMEOUT_MILLISECONDS).setConnectionRequestTimeout(DEFAULT_CONNECTION_REQUEST_MILLISECONDS).build();CloseableHttpClient defaultHttpClient = HttpClientBuilder.create().setConnectionManager(connectionManager).setRetryHandler(new DefaultHttpRequestRetryHandler(2, true)).setKeepAliveStrategy(DefaultConnectionKeepAliveStrategy.INSTANCE).setDefaultRequestConfig(config).build();HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory(defaultHttpClient);clientHttpRequestFactory.setBufferRequestBody(false);;restTemplate.setRequestFactory(clientHttpRequestFactory );

3、asynchttpclient（异步httpclient，版本：4.3）

@Beanpublic AsyncClientHttpRequestFactory asyncHttpRequestFactory() {HttpComponentsAsyncClientHttpRequestFactory asyncHttpRequestFactory = new HttpComponentsAsyncClientHttpRequestFactory(asyncHttpClient());asyncHttpRequestFactory.setBufferRequestBody(false);return asyncHttpRequestFactory;}@Bean(name = "asyncRestTemplate")public AsyncRestTemplate asyncRestTemplate() throws Exception {AsyncRestTemplate restTemplate = new AsyncRestTemplate(asyncHttpRequestFactory(), restTemplate());//restTemplate.setInterceptors(Arrays.asList(loggingClientHttpRequestInterceptor));return restTemplate;}@Beanpublic CloseableHttpAsyncClient asyncHttpClient() {try {//ssl support startTrustStrategy acceptingTrustStrategy = new TrustStrategy() {@Overridepublic boolean isTrusted(X509Certificate[] arg0, String arg1)throws CertificateException {return true;}};SSLContext sslcontext = SSLContextBuilder.create()        .loadTrustMaterial(null, acceptingTrustStrategy )        .build(); Registry<SchemeIOSessionStrategy> sessionStrategyRegistry = RegistryBuilder.<SchemeIOSessionStrategy>create()            .register("http", NoopIOSessionStrategy.INSTANCE)            .register("https", new SSLIOSessionStrategy(sslcontext, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER))            .build();PoolingNHttpClientConnectionManager connectionManager = new PoolingNHttpClientConnectionManager(new DefaultConnectingIOReactor(IOReactorConfig.DEFAULT),sessionStrategyRegistry);connectionManager.setMaxTotal(DEFAULT_MAX_TOTAL_CONNECTIONS); connectionManager.setDefaultMaxPerRoute(DEFAULT_MAX_CONNECTIONS_PER_ROUTE);connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost("facebook.com")), 20);connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost("twitter.com")), 20);connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost("linkedin.com")), 20);connectionManager.setMaxPerRoute(new HttpRoute(new HttpHost("viadeo.com")), 20);RequestConfig config = RequestConfig.custom().setConnectTimeout(DEFAULT_CONNECT_TIMEOUT_MILLISECONDS).setSocketTimeout(DEFAULT_SOCKET_TIMEOUT_MILLISECONDS).setConnectionRequestTimeout(DEFAULT_CONNECTION_REQUEST_MILLISECONDS).build();CloseableHttpAsyncClient httpclient = HttpAsyncClientBuilder.create().setConnectionManager(connectionManager).setDefaultRequestConfig(config).build();return httpclient;} catch (Exception e) {throw Throwables.propagate(e);}}