Example usage for org.apache.http.impl.client FutureRequestExecutionService close

Introduction

In this page you can find the example usage for org.apache.http.impl.client FutureRequestExecutionService close.

Prototype

public void close() throws IOException 

Source Link

Usage

From source file:com.lxf.spider.client.ClientWithRequestFuture.java

public static void main(String[] args) throws Exception {
    // the simplest way to create a HttpAsyncClientWithFuture
    HttpClient httpclient = HttpClientBuilder.create().setMaxConnPerRoute(5).setMaxConnTotal(5).build();
    ExecutorService execService = Executors.newFixedThreadPool(5);
    FutureRequestExecutionService requestExecService = new FutureRequestExecutionService(httpclient,
            execService);// w w w.  j a va  2  s  . c o  m
    try {
        // Because things are asynchronous, you must provide a ResponseHandler
        ResponseHandler<Boolean> handler = new ResponseHandler<Boolean>() {
            public Boolean handleResponse(HttpResponse response) throws ClientProtocolException, IOException {
                // simply return true if the status was OK
                return response.getStatusLine().getStatusCode() == 200;
            }
        };

        // Simple request ...
        HttpGet request1 = new HttpGet("http://google.com");
        HttpRequestFutureTask<Boolean> futureTask1 = requestExecService.execute(request1,
                HttpClientContext.create(), handler);
        Boolean wasItOk1 = futureTask1.get();
        System.out.println("It was ok? " + wasItOk1);

        // Cancel a request
        try {
            HttpGet request2 = new HttpGet("http://google.com");
            HttpRequestFutureTask<Boolean> futureTask2 = requestExecService.execute(request2,
                    HttpClientContext.create(), handler);
            futureTask2.cancel(true);
            Boolean wasItOk2 = futureTask2.get();
            System.out.println("It was cancelled so it should never print this: " + wasItOk2);
        } catch (CancellationException e) {
            System.out.println("We cancelled it, so this is expected");
        }

        // Request with a timeout
        HttpGet request3 = new HttpGet("http://google.com");
        HttpRequestFutureTask<Boolean> futureTask3 = requestExecService.execute(request3,
                HttpClientContext.create(), handler);
        Boolean wasItOk3 = futureTask3.get(10, TimeUnit.SECONDS);
        System.out.println("It was ok? " + wasItOk3);

        FutureCallback<Boolean> callback = new FutureCallback<Boolean>() {
            public void completed(Boolean result) {
                System.out.println("completed with " + result);
            }

            public void failed(Exception ex) {
                System.out.println("failed with " + ex.getMessage());
            }

            public void cancelled() {
                System.out.println("cancelled");
            }
        };

        // Simple request with a callback
        HttpGet request4 = new HttpGet("http://google.com");
        // using a null HttpContext here since it is optional
        // the callback will be called when the task completes, fails, or is cancelled
        HttpRequestFutureTask<Boolean> futureTask4 = requestExecService.execute(request4,
                HttpClientContext.create(), handler, callback);
        Boolean wasItOk4 = futureTask4.get(10, TimeUnit.SECONDS);
        System.out.println("It was ok? " + wasItOk4);
    } finally {
        requestExecService.close();
    }
}

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From source file:interoperabilite.webservice.client.ClientWithRequestFuture.java

public static void main(String[] args) throws Exception {
    // the simplest way to create a HttpAsyncClientWithFuture
    HttpClient httpclient = HttpClientBuilder.create().setMaxConnPerRoute(5).setMaxConnTotal(5).build();
    ExecutorService execService = Executors.newFixedThreadPool(5);
    FutureRequestExecutionService requestExecService = new FutureRequestExecutionService(httpclient,
            execService);//from   www  .j  a  v a  2 s . c om
    try {
        // Because things are asynchronous, you must provide a ResponseHandler
        ResponseHandler<Boolean> handler = new ResponseHandler<Boolean>() {
            @Override
            public Boolean handleResponse(HttpResponse response) throws ClientProtocolException, IOException {
                // simply return true if the status was OK
                return response.getStatusLine().getStatusCode() == 200;
            }
        };

        // Simple request ...
        HttpGet request1 = new HttpGet("http://httpbin.org/get");
        HttpRequestFutureTask<Boolean> futureTask1 = requestExecService.execute(request1,
                HttpClientContext.create(), handler);
        Boolean wasItOk1 = futureTask1.get();
        System.out.println("It was ok? " + wasItOk1);

        // Cancel a request
        try {
            HttpGet request2 = new HttpGet("http://httpbin.org/get");
            HttpRequestFutureTask<Boolean> futureTask2 = requestExecService.execute(request2,
                    HttpClientContext.create(), handler);
            futureTask2.cancel(true);
            Boolean wasItOk2 = futureTask2.get();
            System.out.println("It was cancelled so it should never print this: " + wasItOk2);
        } catch (CancellationException e) {
            System.out.println("We cancelled it, so this is expected");
        }

        // Request with a timeout
        HttpGet request3 = new HttpGet("http://httpbin.org/get");
        HttpRequestFutureTask<Boolean> futureTask3 = requestExecService.execute(request3,
                HttpClientContext.create(), handler);
        Boolean wasItOk3 = futureTask3.get(10, TimeUnit.SECONDS);
        System.out.println("It was ok? " + wasItOk3);

        FutureCallback<Boolean> callback = new FutureCallback<Boolean>() {
            @Override
            public void completed(Boolean result) {
                System.out.println("completed with " + result);
            }

            @Override
            public void failed(Exception ex) {
                System.out.println("failed with " + ex.getMessage());
            }

            @Override
            public void cancelled() {
                System.out.println("cancelled");
            }
        };

        // Simple request with a callback
        HttpGet request4 = new HttpGet("http://httpbin.org/get");
        // using a null HttpContext here since it is optional
        // the callback will be called when the task completes, fails, or is cancelled
        HttpRequestFutureTask<Boolean> futureTask4 = requestExecService.execute(request4,
                HttpClientContext.create(), handler, callback);
        Boolean wasItOk4 = futureTask4.get(10, TimeUnit.SECONDS);
        System.out.println("It was ok? " + wasItOk4);
    } finally {
        requestExecService.close();
    }
}

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