java测试并发类

/** * ConTest.java * 版权所有(C) 2012  * 创建:cuiran 2012-07-12 10:12:14 */package com.wpndemo.test;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.HttpURLConnection;import java.net.URL;import java.util.HashMap;import java.util.Iterator;import java.util.Set;import java.util.Map;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import java.util.concurrent.Semaphore;public class ConTest{private static int thread_num = 10;private static int client_num = 10;private  static  int num=0;public static int getNo(){num=num+1;System.out.println(num);return num;}private static Map keywordMap = new HashMap();static {//try {////InputStreamReader isr = new InputStreamReader(new FileInputStream(////new File("clicks.txt")), "GBK");////BufferedReader buffer = new BufferedReader(isr);////String line = "";////while ((line = buffer.readLine()) != null) {////keywordMap.put(line.substring(0, line.lastIndexOf(":")), "");////}////} catch (Exception e) {////e.printStackTrace();////}}public static void main(String[] args) {int size = keywordMap.size();// TODO Auto-generated method stubExecutorService exec = Executors.newCachedThreadPool();keywordMap.put("test01", "38338");keywordMap.put("test02", "38339");keywordMap.put("test03", "38340");keywordMap.put("test04", "38341");keywordMap.put("test05", "38342");//keywordMap.put("test06", "38343");//keywordMap.put("test07", "38344");//keywordMap.put("test08", "38345");//keywordMap.put("test09", "38346");//keywordMap.put("test10", "38347");// 50个线程可以同时访问final Semaphore semp = new Semaphore(thread_num);// 模拟2000个客户端访问Set set =keywordMap.keySet();// Iterator it=set.iterator();     int index=0;   while(it.hasNext()){String userName= (String) it.next();//      final String pass=keywordMap.get(userName).toString();//Runnable run = new Runnable() {int NO = ConcurrentTest.num;;  public void run() {try {// 获取许可semp.acquire();System.out.println("Thread:" + NO);String host = "http://192.168.0.137:8080/MessageWeb/messageSrevlet.do?";String para = "m=reqcalltaxi&id="+pass+"&key=35bc7f25daa881fa0974730276868f12&phone=13401038652&bx=116.311754&by=40.034496&"+ "bLocation=%E4%B8%8A%E5%9C%B0&bDes=%E5%8C%97%E4%BA%AC%E5%B8%82%E6%B5%B7%E6%B7%80%E5%8C%BA%E4%B8%8A%E5%9C%B03%E8%A1%97%E7%8E%AF%E5%B2%9B%E8%A5%BF%E5%8D%97%E8%A7%92(%E8%BF%91%E4%B8%8A%E5%9C%B0%E7%8E%AF%E5%B2%9B)&"+ "ex=116.315942&ey=40.05343&eLocation=%E8%A5%BF%E4%BA%8C%E6%97%97&eDes=333%E8%B7%AF%E5%86%85%E7%8E%AF,333%E8%B7%AF%E5%A4%96%E7%8E%AF,392%E8%B7%AF,%E8%BF%90%E9%80%9A114%E8%B7%AF,636%E8%B7%AF&"+ "time=15&userNum=1&isSalute=1&name=%E6%9C%B1%E5%85%88%E7%94%9F&level=3&credit=-3&bytime=2012-07-12%2016:34:17&type=0¬ifytime=2012-07-12%2016:34:17&s=123456&"+ "jsoncallback=jQuery16208664285382739452_1342059526704&_=1342059557372";System.out.println(host + para);URL url = new URL(host);// 此处填写供测试的urlHttpURLConnection connection = (HttpURLConnection) url.openConnection();// connection.setRequestMethod("POST");// connection.setRequestProperty("Proxy-Connection",// "Keep-Alive");connection.setDoOutput(true);connection.setDoInput(true);PrintWriter out = new PrintWriter(connection.getOutputStream());out.print(para);out.flush();out.close();BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));String line = "";String result = "";while ((line = in.readLine()) != null) {result += line;}// System.out.println(result);// Thread.sleep((long) (Math.random()) * 1000);// 释放System.out.println("第：" + NO + " 个");semp.release();} catch (Exception e) {e.printStackTrace();}}};exec.execute(run); }// 退出线程池exec.shutdown();}}