TestThreadPoolExecutor.java
package ;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.CookieStore;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.AbstractHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;
public class TestThreadPoolExecutor {
private static ThreadPoolExecutor threadpool;
/**
* 当一个任务通过execute(Runnable)方法欲添加到线程池时：
* 1.如果此时线程池中的数量小于corePoolSize，即使线程池中的线程都处于空闲状态，也要创建新的线程来处理被添加的任务。
* 2.如果此时线程池中的数量等于corePoolSize，但是缓冲队列workQueue未满，那么任务被放入缓冲队列。
* 3.如果此时线程池中的数量大于corePoolSize，缓冲队列workQueue满，并且线程池中的数量小于maximumPoolSize，建新的线程来处理被添加的任务。
* 4.如果此时线程池中的数量大于corePoolSize，缓冲队列workQueue满，并且线程池中的数量等于maximumPoolSize，那么通过
* handler所指定的策略来处理此任务。也就是：处理任务的优先级为：核心线程corePoolSize、任务队列workQueue、最大线程maximumPoolSize
* ，如果三者都满了，使用handler处理被拒绝的任务。
* 5.当线程池中的线程数量大于corePoolSize时，如果某线程空闲时间超过keepAliveTime，线程将被终止。这样，线程池可以动态的调整池中的线程数。
*/
/**
* corePoolSize-线程池维护线程的最少数量/线程保有量,线程池总永久保存执行线程的数量。
* maximumPoolSize-池中允许的最大线程数(采用LinkedBlockingQueue时没有作用),线程最多不能超过此属性设置的数量，当大于线程保有量后，会新启动线程来满足线程执行。
* keepAliveTime-线程池维护线程所允许的空闲时间, 当线程数大于核心时，此为终止前多余的空闲线程等待新任务的最长时间，线程池维护线程所允许的空闲时间。
* unit-keepAliveTime线程池维护线程所允许的空闲时间的单位:秒。
* workQueue-执行前用于保持任务的队列（缓冲队列）。此队列仅保持由execute 方法提交的 Runnable 任务。
* RejectedExecutionHandler-线程池对拒绝任务的处理策略(重试添加当前的任务，自动重复调用execute()方法)
*/
public TestThreadPoolExecutor() {
threadpool = new ThreadPoolExecutor(20, 200000, 20, TimeUnit.MILLISECONDS, new ArrayBlockingQueue(2000000),
new ThreadPoolExecutor.DiscardOldestPolicy());
}
static String[] urisToGet = {
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
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"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.baidu.com/",
"http://www.dianping.com/"
};
public void submit(final HttpClient httpClient, final HttpGet httpget, final int id, final String CityUrl) {
final HttpContext context = new BasicHttpContext();
threadpool.execute(new Runnable() {
public void run() {
try {
HttpResponse response = httpClient.execute(httpget, context);
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream instream = entity.getContent();
try {
System.out.println("CityUrl:" + CityUrl+", flag:" + id + ", threadpool.getPoolSize():" + threadpool.getPoolSize() + ", thread name:" + Thread.currentThread().getName());
//Thread.sleep(10);
// CityGetPageTotal(CityUrl, IOUtils.toString(instream));
// GetCityIDList(id, IOUtils.toString(instream));
}
// catch (InterruptedException e) {
// e.printStackTrace();
// }
finally {
instream.close();
}
}
} catch (Exception e) {
httpget.abort();
System.out.println("Error: " + id + ", url:" + CityUrl + ". " + e);
}
}
});
}
public static void main(String[] args) throws ClientProtocolException, IOException {
ThreadSafeClientConnManager tscm = new ThreadSafeClientConnManager();
tscm.setMaxTotal(100);
tscm.setDefaultMaxPerRoute(1);
HttpClient httpclient = new DefaultHttpClient(tscm);
CookieStore cookieStore = ((AbstractHttpClient) httpclient).getCookieStore();
DefaultHttpClient httpclient2 = new DefaultHttpClient();
HttpGet httpget2 = new HttpGet("http://www.dianping.com/shangqiu");
HttpContext localContext2 = new BasicHttpContext();
HttpResponse response2 = httpclient2.execute(httpget2, localContext2);
HttpEntity entity2 = response2.getEntity();
List<Cookie> cookies;
cookies = ((AbstractHttpClient) httpclient2).getCookieStore().getCookies();
try {
TestThreadPoolExecutor t = new TestThreadPoolExecutor();
if (cookies.isEmpty()) {
System.out.println("None");
} else {
for (int j = 0; j < cookies.size(); j++) {
cookieStore.addCookie(cookies.get(j));
//System.out.println("- " + cookies.get(j).toString());
}
}
for (int i = 0; i < urisToGet.length; i++) {
//System.out.println("i:" + i);
HttpGet httpget = new HttpGet(urisToGet[i]);
httpget.addHeader("User-Agent", "Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/41.0");
httpget.addHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
httpget.addHeader("Accept-Language", "en-US,zh-CN;q=0.5");
t.submit(httpclient, httpget,i,urisToGet[i]);
}
System.out.println(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
//Thread.sleep(1000 * 10);
threadpool.shutdown();
if (threadpool.isTerminated()) {
threadpool.shutdownNow();
} else {
Thread.sleep(10);
}
System.out.println("................................................");
} catch (Exception e) {
e.printStackTrace();
}
}
}
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