汤姆大叔抢书程序之java版

最新推荐文章于 2025-09-12 18:08:49 发布

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最新推荐文章于 2025-09-12 18:08:49 发布

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文章标签： java

本文探讨了在并发环境下利用Apache HttpClient组件提交HTTP请求的优化方法，并提供了具体代码实现及性能测试，旨在提升请求响应速度。

SingletonClient.getHttpClient().execute(post2,localContext);这里是采用httpclient组件提交http请求，需要导入相应的依赖

< dependency >
       < groupId >org.apache.httpcomponents </ groupId >
       < artifactId >httpclient </ artifactId >
       < version >4.2.1 </ version >
     </ dependency >
     < dependency >
       < groupId >org.apache.httpcomponents </ groupId >
       < artifactId >httpcore </ artifactId >
       < version >4.2.1 </ version >
     </ dependency >

     < dependency >
       < groupId >org.apache.httpcomponents </ groupId >
       < artifactId >httpmime </ artifactId >
       < version >4.2.1 </ version >
     </ dependency >

     < dependency >
       < groupId >org.apache.httpcomponents </ groupId >
       < artifactId >httpclient-cache </ artifactId >
       < version >4.2.1 </ version >
     </ dependency >

     < dependency >
       < groupId >org.apache.httpcomponents </ groupId >
       < artifactId >fluent-hc </ artifactId >
       < version >4.2.1 </ version >
     </ dependency >

     < dependency >
       < groupId >commons-codec </ groupId >
       < artifactId >commons-codec </ artifactId >
       < version >1.6 </ version >
     </ dependency >

     < dependency >
       < groupId >commons-logging </ groupId >
       < artifactId >commons-logging </ artifactId >
       < version >1.1.1 </ version >

</dependency>

工具类SingletonClient.java

public class SingletonClient {

     private static final String CHARSET = "UTF-8";
     private static HttpClient singleHttpClient;

     private SingletonClient() {
    }

     public static synchronized HttpClient getHttpClient() {
         if ( null == singleHttpClient) {
             // exe = Executors.newFixedThreadPool(POOL_SIZE);

            HttpParams params = new BasicHttpParams();
            HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
            HttpProtocolParams.setContentCharset(params, CHARSET);
            HttpProtocolParams.setUseExpectContinue(params, true);
            HttpProtocolParams
                    .setUserAgent(
                            params,
                            "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 GTB6 (.NET CLR 3.5.30729)");
             /* 连接超时 */
            HttpConnectionParams.setConnectionTimeout(params, 5000);
             /* 请求超时 */
            HttpConnectionParams.setSoTimeout(params, 5000);

             // 设置HttpClient支持的请求模式
            SchemeRegistry schReg = new SchemeRegistry();
            schReg.register( new Scheme("http", 80, PlainSocketFactory
                    .getSocketFactory()));
            schReg.register( new Scheme("https", 443, SSLSocketFactory
                    .getSocketFactory()));
             // 在最新版本的httpclient中ThreadSafeClientConnManager已被@Deprecated掉，这里使用PoolingClientConnectionManager。
             // ClientConnectionManager conMgr = new PoolingClientConnectionManager(schReg);
            PoolingClientConnectionManager conMgr = new PoolingClientConnectionManager(schReg);
            conMgr.setMaxTotal(10);
             // HttpHost localhost = new HttpHost("locahost", 80);
             // conMgr.setMaxPerRoute(new HttpRoute(localhost), 50);

            singleHttpClient = new DefaultHttpClient(conMgr, params);

        }
         return singleHttpClient;
    }
}

UserContext .java

public class UserContext {

     /**
     * @param args
      */
     public static void main(String[] args) {
         // TODO Auto-generated method stub
         final HttpContext localContext=initContext();
         try {
            Thread.sleep(1000);
        } catch (InterruptedException e1) {
             // TODO Auto-generated catch block
            e1.printStackTrace();
        }

         List<BasicNameValuePair> list2= new ArrayList<BasicNameValuePair>();
            list2.add( new BasicNameValuePair("__VIEWSTATE","/wEPDwUJNDYwODU2NjU1ZGQ="));
            list2.add( new BasicNameValuePair("txbComment","我跟你拼了  哈哈"));
            list2.add( new BasicNameValuePair("btnSubmint","提交评论"));
              final HttpPost post2=SingletonClient.getPost("http://m.cnblogs.com/mobileAddComment.aspx?id=101461&entry=2733027", list2);

            Thread mythread= new Thread( new Runnable(){
              int minute=59;
              int second=16;
              int millisec=400;
                @Override
                 public void run() {
                     // TODO Auto-generated method stub
                    SimpleDateFormat sdf2= new SimpleDateFormat("yyyy年MM月dd日hh时mm分ss秒SSS毫秒");
                     // int sec=0;
                     while( true)
                    {

                         if(Calendar.getInstance().get(Calendar.MINUTE)==minute&&Calendar.getInstance().get(Calendar.SECOND)==second&&Calendar.getInstance().get(Calendar.MILLISECOND)>millisec)
                        {
                             try {
                                 long start=System.currentTimeMillis();
                                HttpResponse httpResponse1 = SingletonClient.getHttpClient().execute(post2,localContext);
                                System.out.println("响应代码1"+httpResponse1.getStatusLine().getStatusCode());
                                 long end=System.currentTimeMillis();
                                System.out.println("往返响应时间："+(end-start));
                                 break;

                            } catch (ClientProtocolException e) {
                                 // TODO Auto-generated catch block
                                e.printStackTrace();
                            } catch (IOException e) {
                                 // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                             break;
                        }
                        System.out.println(sdf2.format( new Date()));

                    }

                }

            });
            mythread.start();
    }
     public static HttpContext initContext()
    {
        List<BasicNameValuePair> list= new ArrayList<BasicNameValuePair>();

        list.add( new BasicNameValuePair("__EVENTTARGET",""));
        list.add( new BasicNameValuePair("__EVENTARGUMENT",""));
        list.add( new BasicNameValuePair("__VIEWSTATE","/wEPDwULLTE1MzYzODg2NzZkGAEFHl9fQ29udHJvbHNSZXF1aXJlUG9zdEJhY2tLZXlfXxYBBQtjaGtSZW1lbWJlcm1QYDyKKI9af4b67Mzq2xFaL9Bt"));
        list.add( new BasicNameValuePair("__EVENTVALIDATION","/wEWBQLWwpqPDQLyj/OQAgK3jsrkBALR55GJDgKC3IeGDE1m7t2mGlasoP1Hd9hLaFoI2G05"));
        list.add( new BasicNameValuePair("tbUserName","你的用户名"));
        list.add( new BasicNameValuePair("tbPassword","你的密码"));
        list.add( new BasicNameValuePair("btnLogin","登录"));

        HttpPost post=SingletonClient.getPost("http://passport.cnblogs.com/login.aspx", list);

         // 创建一个本地Cookie存储的实例
        CookieStore cookieStore = new BasicCookieStore();
         // 创建一个本地上下文信息
        HttpContext localContext = new BasicHttpContext();
         // 在本地上下问中绑定一个本地存储
        localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);

         try {

            HttpResponse httpResponse = SingletonClient.getHttpClient().execute(post,localContext);
            String status="初始化失败";
             if(httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_MOVED_TEMPORARILY )            {
                status="初始化成功";
            }
             // Do not feel like reading the response body
             // Call abort on the request object
            post.abort();
            System.out.println(status);

        } catch (ClientProtocolException e) {
             // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
             // TODO Auto-generated catch block
            e.printStackTrace();
        }
         return localContext;

    }

}

优化建议：

其实现在抢书已经拼到了毫秒级，单靠这种单用户一次性提交抢到书的几率还是不大的

所以建议修改程序，增加几个HttpContext实例（多用户，我借用了朋友一个帐号），在main函数里面，执行几个 SingletonClient.getHttpClient().execute(post2,localContext);方法

SingletonClient.getHttpClient().execute(post2,localContext1);

SingletonClient.getHttpClient().execute(post2,localContext2);

SingletonClient.getHttpClient().execute(post2,localContext3);

……