com.mycompany.asyncreq.MainApp.java Source code

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Here is the source code for com.mycompany.asyncreq.MainApp.java

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/*
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package com.mycompany.asyncreq;

import java.util.concurrent.Future;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.CharBuffer;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.concurrent.FutureCallback;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.nio.client.CloseableHttpAsyncClient;
import org.apache.http.impl.nio.client.HttpAsyncClients;
import org.apache.http.nio.IOControl;
import org.apache.http.nio.client.methods.AsyncCharConsumer;
import org.apache.http.nio.client.methods.HttpAsyncMethods;
import org.apache.http.nio.protocol.HttpAsyncRequestProducer;
import org.apache.http.protocol.HttpContext;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.apache.http.client.fluent.Async;
import org.apache.http.client.fluent.Content;
import org.apache.http.client.fluent.Request;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.concurrent.FutureCallback;

/**
 *
 * @author tiniv_000
 */
public class MainApp {
    //       public static void main(String[] args) throws InterruptedException, ExecutionException {
    //     try {
    // 
    //      CloseableHttpAsyncClient httpClient = HttpAsyncClients.createDefault();
    //      HttpGet getRequest = new HttpGet(
    //         "http://localhost:8080/RESTfulExample/json/product/get");
    //      getRequest.addHeader("accept", "application/json");
    // 
    //      Future<HttpResponse> future = httpClient.execute(getRequest,null);
    //                HttpResponse response = future.get();
    //      if (response.getStatusLine().getStatusCode() != 200) {
    //         throw new RuntimeException("Failed : HTTP error code : "
    //            + response.getStatusLine().getStatusCode());
    //      }
    // 
    //      BufferedReader br = new BufferedReader(
    //                         new InputStreamReader((response.getEntity().getContent())));
    // 
    //      String output;
    //      System.out.println("Output from Server .... \n");
    //      while ((output = br.readLine()) != null) {
    //         System.out.println(output);
    //      }
    // 
    //      httpClient.close();
    // 
    //     } catch (ClientProtocolException e) {
    // 
    //      e.printStackTrace();
    // 
    //     } catch (IOException e) {
    // 
    //      e.printStackTrace();
    //     }
    // 
    //   }

    public static void main(String[] args) throws InterruptedException, ExecutionException, IOException {
        URIBuilder builder = new URIBuilder();
        builder.setScheme("http").setHost("comtrade.un.org").setPath("/api/get").setParameter("max", "50000")
                .setParameter("type", "C").setParameter("freq", "M").setParameter("px", "HS")
                .setParameter("ps", "2014").setParameter("r", "804").setParameter("p", "112")
                .setParameter("rg", "All").setParameter("cc", "All").setParameter("fmt", "json");
        URI requestURL = null;
        try {
            requestURL = builder.build();
        } catch (URISyntaxException use) {
        }

        ExecutorService threadpool = Executors.newFixedThreadPool(2);
        Async async = Async.newInstance().use(threadpool);
        final Request request = Request.Get(requestURL);

        try {
            Future<Content> future = async.execute(request, new FutureCallback<Content>() {
                @Override
                public void failed(final Exception e) {
                    System.out.println(e.getMessage() + ": " + request);
                }

                @Override
                public void completed(final Content content) {
                    System.out.println("Request completed: " + request);
                    System.out.println("Response:\n" + content.asString());
                }

                @Override
                public void cancelled() {
                }
            });
        } catch (Exception e) {
            System.out.println("Job threw exception: " + e.getCause());
        }

    }
}