java httpclient问题

clpliji 2014-01-04 02:08:48

我写了一个demo，功能是多线程httpclient并发访问某个网站，最后返回的结果有好多500，还有好多refuse，我不知道这个500或者refuse是我的程序问题，还是我访问的那个网站的问题？
代码如下：

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import java.util.concurrent.Semaphore;

import java.util.concurrent.TimeUnit;

import org.apache.http.HttpHost;

import org.apache.http.HttpResponse;

import org.apache.http.HttpVersion;

import org.apache.http.client.CookieStore;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.client.protocol.ClientContext;

import org.apache.http.conn.routing.HttpRoute;

import org.apache.http.conn.scheme.PlainSocketFactory;

import org.apache.http.conn.scheme.Scheme;

import org.apache.http.conn.scheme.SchemeRegistry;

import org.apache.http.conn.ssl.SSLSocketFactory;

import org.apache.http.entity.ContentType;

import org.apache.http.entity.StringEntity;

import org.apache.http.impl.client.BasicCookieStore;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.impl.conn.PoolingClientConnectionManager;

import org.apache.http.params.BasicHttpParams;

import org.apache.http.params.HttpConnectionParams;

import org.apache.http.params.HttpParams;

import org.apache.http.params.HttpProtocolParams;

import org.apache.http.protocol.BasicHttpContext;

import org.apache.http.protocol.HttpContext;

import org.apache.http.util.EntityUtils;



public class httpclient {



    public static String url = "";

    public static CookieStore cookieStore;

    public static DefaultHttpClient httpClient = null;



    public static DefaultHttpClient getHttpClient() {

        HttpParams params = new BasicHttpParams();

        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);

        HttpProtocolParams.setUserAgent(params, "HttpComponents/1.1");

        HttpProtocolParams.setUseExpectContinue(params, true);



        //设置连接超时时间 

        int REQUEST_TIMEOUT = 30 * 1000;	//设置请求超时10秒钟 

        int SO_TIMEOUT = 60 * 1000; 		//设置等待数据超时时间10秒钟 

        HttpConnectionParams.setConnectionTimeout(params, REQUEST_TIMEOUT);

        HttpConnectionParams.setSoTimeout(params, SO_TIMEOUT);

//        params.setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, REQUEST_TIMEOUT);

//        params.setParameter(CoreConnectionPNames.SO_TIMEOUT, SO_TIMEOUT);



        //设置访问协议 

        SchemeRegistry schreg = new SchemeRegistry();

        schreg.register(new Scheme("http", 80, PlainSocketFactory.getSocketFactory()));

        schreg.register(new Scheme("https", 443, SSLSocketFactory.getSocketFactory()));



        PoolingClientConnectionManager pccm = new PoolingClientConnectionManager(schreg);

        pccm.setDefaultMaxPerRoute(200);	//每个主机的最大并行链接数 

        pccm.setMaxTotal(200);			//客户端总并行链接最大数    

        HttpHost localhost = new HttpHost(url, 80);

        pccm.setMaxPerRoute(new HttpRoute(localhost), 50);

        httpClient = new DefaultHttpClient(pccm, params);

        return httpClient;

    }



    public static String httpSend(String xml, String url, boolean login, Count c) {

        HttpPost httppost = null;

        try {

            if (cookieStore == null && login) {

                cookieStore = new BasicCookieStore();

            }

            HttpContext localContext = new BasicHttpContext();

            localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);



            StringEntity myEntity = new StringEntity(xml, ContentType.create("text/xml", "UTF-8"));

            httppost = new HttpPost(url);

            httppost.setEntity(myEntity);

            HttpResponse hr = httpClient.execute(httppost, localContext);

            String result = null;

            int code = hr.getStatusLine().getStatusCode();

            if (code == 200) {

                result = EntityUtils.toString(hr.getEntity());

                c.addCount();

            } else {

                System.out.println("code:" + code);

                c.addfailcount();

                return null;

            }

            return result;

        } catch (Exception e) {

            System.out.println(e.toString());

            c.addExCount();

            return null;

        } finally {

            httppost.releaseConnection();

        }

    }



    public static void morethread() {

        final String xml = "";

        int size = 100;

        final Count c = new Count();

        ExecutorService exec = Executors.newCachedThreadPool();

        final Semaphore semp = new Semaphore(size);

        for (int index = 0; index < size; index++) {

            Runnable run = new Runnable() {

                @Override

                public void run() {

                    try {

                        semp.acquire();

                        for (int i = 0; i < 20; i++) {

                            httpSend(xml, url, false, c);

                        }

                        semp.release();

                    } catch (Exception e) {

                        System.out.println(e);

                    }

                }

            };

            exec.execute(run);

        }

        exec.shutdown();

        while (!exec.isTerminated()) {

            try {

                exec.awaitTermination(500, TimeUnit.MILLISECONDS);

            } catch (Exception e) {

                System.out.println(e);

            }

        }

        System.out.println(c.getCount() + "\t" + c.getFailcount() + "\t" + c.getExCount());

    }



    public static void main(String[] args) {

        getHttpClient();

        morethread();

        httpClient.getConnectionManager().shutdown();

    }

}

这里ip没填，希望各位指点一下。
运行结果如下：
code:500
code:500
code:500
code:500
code:500
code:500
code:500
code:500
code:500
code:500
code:500
code:500
org.apache.http.conn.HttpHostConnectException
这里问题深入一点就是，我如何知道这个是不是我本机没有足够资源导致http连接建立不了？

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