springboot整合HttpAsyncClient简单实用

1、pom添加内容

<dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpasyncclient</artifactId>
            <version>4.1</version>
        </dependency>

2、创建httpUtil

public class HttpUtil {

    private static int socketTimeout = 1000;// 设置等待数据超时时间5秒钟 根据业务调整

    private static int connectTimeout = 2000;// 连接超时

    private static int poolSize = 100;// 连接池最大连接数

    private static int maxPerRoute = 10;// 每个主机的并发最多10


    /**
     * 创建非异步的可关闭的且跳过https 验证的 httpClient
     * @return
     */
    public static CloseableHttpClient createSSLClientDefault() {
        try {
            SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
                @Override
                public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                    return true;
                }
            }).build();
            SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext);
            return HttpClients.custom().setSSLSocketFactory(sslsf).build();
        } catch (KeyManagementException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (KeyStoreException e) {
            e.printStackTrace();
        }
        return HttpClients.createDefault();
    }

    /**
     * 创建异步的可关闭的跳过https验证的 httpClient对象
     * @param connManager  连接管理器  可以调用本类的getConnManager 生成
     * @return
     */
    public static CloseableHttpAsyncClient getClient(PoolingNHttpClientConnectionManager connManager) {
        if (null == connManager) {
            return null;
        }
        // 设置连接参数
        RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(HttpUtil.socketTimeout).setConnectTimeout(HttpUtil.connectTimeout).build();
        // 创建自定义的httpclient对象
        CloseableHttpAsyncClient client = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig)
                .setConnectionManager(connManager).disableCookieManagement().build();
        return client;
    }

    /**
     * 创建异步的可关闭的跳过https验证的 httpClient对象(绑定本地网卡)
     * @param connManager
     * @param localAddress
     * @return
     * @throws
     */
    public static CloseableHttpAsyncClient getClient(PoolingNHttpClientConnectionManager connManager, String localAddress) throws UnknownHostException {
        if (null == connManager || null == localAddress) {
            return null;
        }
        String[] ipStrArr = localAddress.split("\\.");
        if(ipStrArr.length != 4){
            return null;
        }
        byte[] ip = new byte[]{ (byte)(Integer.parseInt(ipStrArr[0])), (byte) (Integer.parseInt(ipStrArr[1])), (byte) (Integer.parseInt(ipStrArr[2])), (byte) (Integer.parseInt(ipStrArr[3])) };

        // 设置连接参数
        RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(HttpUtil.socketTimeout).setConnectTimeout(HttpUtil.connectTimeout).setLocalAddress(InetAddress.getByAddress(ip)).build();
        // 创建自定义的httpclient对象
        CloseableHttpAsyncClient client = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig)
                .setConnectionManager(connManager).disableCookieManagement().build();
        return client;
    }

    /**
     * 初始化 连接管理器
     * @return
     */
    public static PoolingNHttpClientConnectionManager getConnManager() {

        try {
            // 绕过证书验证，处理https请求
            SSLContext sslcontext = createIgnoreVerifySSL();

            // 设置协议http和https对应的处理socket链接工厂的对象
            Registry<SchemeIOSessionStrategy> sessionStrategyRegistry = RegistryBuilder
                    .<SchemeIOSessionStrategy> create().register("http", NoopIOSessionStrategy.INSTANCE)
                    .register("https", new SSLIOSessionStrategy(sslcontext, new AllowAllHostnameVerifier())).build();
            // 配置io线程
            IOReactorConfig ioReactorConfig = IOReactorConfig.custom().setConnectTimeout(HttpUtil.socketTimeout).setSoTimeout(HttpUtil.connectTimeout)
                    .setRcvBufSize(8192).setSndBufSize(8192).build();

            // 设置连接池大小
            ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(ioReactorConfig);

            PoolingNHttpClientConnectionManager connManager = new PoolingNHttpClientConnectionManager(ioReactor, null,
                    sessionStrategyRegistry, null);
            connManager.setDefaultMaxPerRoute(maxPerRoute);
            connManager.setMaxTotal(poolSize);
            return connManager;
        } catch (IOReactorException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 绕过验证
     *
     * @return
     * @throws NoSuchAlgorithmException
     * @throws KeyManagementException
     */
    public static SSLContext createIgnoreVerifySSL() {
        SSLContext sc = null;
        try {
            sc = SSLContext.getInstance("TLS");
            // 实现一个X509TrustManager接口，用于绕过验证，不用修改里面的方法
            X509TrustManager trustManager = new X509TrustManager() {
                @Override
                public void checkClientTrusted(X509Certificate[] paramArrayOfX509Certificate, String paramString) {
                }

                @Override
                public void checkServerTrusted(X509Certificate[] paramArrayOfX509Certificate, String paramString) {
                }

                @Override
                public X509Certificate[] getAcceptedIssuers() {
                    return null;
                }
            };
            sc.init(null, new TrustManager[] { trustManager }, null);
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (KeyManagementException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return sc;

    }

    /**
     * 从 request请求对象 中获取ip地址
     * @param request
     * @return
     */
    public static String getIpAddress(HttpServletRequest request) {
        if(request==null){
            return null;
        }
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_CLIENT_IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
}

3、创建一个提供外部获取httpClient接口

/**
 * AsynHttpClient工厂类
 */
@Component
public class AsynHttpClientFactory {

    private static Logger logger = LoggerFactory.getLogger(AsynHttpClientFactory.class);


    private static CloseableHttpAsyncClient httpclient;
    private PoolingNHttpClientConnectionManager connManager;
    public AsynHttpClientFactory() {
        connManager = HttpUtil.getConnManager();
        httpclient = HttpUtil.getClient(connManager);
        httpclient.start();
        logger.info("异步httpClient启动完成");
    }

    public static CloseableHttpAsyncClient getCloseableHttpAsyncClient(){
        return httpclient;
    }

}

4、测试方法

单个url发送

 @Test
    public void run(){
        CloseableHttpAsyncClient httpClient =AsynHttpClientFactory.getCloseableHttpAsyncClient();
        long startTime = System.currentTimeMillis();
            final HttpGet request = new HttpGet("http://www.apache.org");
            final Future future = httpClient.execute(request, null);
            try {
                HttpResponse response = (HttpResponse) future.get();
                System.out.println("Response:" + request.getURI()+"; "+ response.getStatusLine());
                System.out.println("Shutting down");
            } catch (Exception ex) {
                System.out.println(ex.getMessage());
            }finally{
                try {
                    httpClient.close();
                } catch (IOException ex) {
                    System.out.println(ex.getMessage());
                }
            }
        long endTime = System.currentTimeMillis();

        System.out.println("执行完毕, 耗时："+(endTime-startTime)/1000+" 秒");
    }

多条url发送

 @Test
    public void moreRequest(){
        CloseableHttpAsyncClient httpClient =AsynHttpClientFactory.getCloseableHttpAsyncClient();
        long startTime = System.currentTimeMillis();
        final HttpGet[] requests = new HttpGet[10];
        for (int i = 0; i < requests.length; i++) {
            requests[i] = new HttpGet("http://www.apache.org/");
        }

        final CountDownLatch latch = new CountDownLatch(requests.length);
        for(final HttpGet request: requests){

            httpClient.execute(request, new FutureCallback(){
                @Override
                public void completed(Object obj) {
                    final HttpResponse response = (HttpResponse)obj;
                    latch.countDown();
                    System.out.println(request.getURI() + "->" + response.getStatusLine());
                }

                @Override
                public void failed(Exception excptn) {
                    latch.countDown();
                    System.out.println(request.getURI() + "->" + excptn);
                }

                @Override
                public void cancelled() {
                    latch.countDown();
                    System.out.println(request.getURI() + "cancelled");
                }
            });
        }

        try {
            latch.await();
            System.out.println("Shutting Down");
        } catch (InterruptedException ex) {
            System.out.println(ex.getMessage());
        }finally{
            try {
                httpClient.close();
            } catch (IOException ex) {
                System.out.println(ex.getMessage());
            }
        }
        long endTime = System.currentTimeMillis();

        System.out.println("执行完毕, 耗时："+(endTime-startTime)/1000+" 秒");
    }

作者：Steven_sunlu
链接：https://www.jianshu.com/p/0ad167223f69
来源：简书
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