多线程访问网页+高并发测试网站-淘宝类目选错了-程序博客网

[java] view plaincopy

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
public class TestThread extends Thread{
private String httpurl;
public TestThread(String httpurl){
this.httpurl = httpurl;
}
public void run() {
HttpURLConnection connection = null;
InputStream urlStream = null;
URL url = null;
try {
url = new URL(httpurl);
connection = (HttpURLConnection)url.openConnection();
connection.connect();
urlStream = connection.getInputStream();
Thread.sleep(10L); } catch (InterruptedException e) {
}
catch (MalformedURLException e)
{
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
}
}

[java] view plaincopy

public class Test {
public static void main(String[] args) {
while (true) {
//仅供学习请勿用于非法用途
startThead();
}
}
public static int threadCount = 55; //线程数量
private static boolean isRunGrabThread = true; //抓取线程是否执行完毕
static int num = 1; //动态参数
public static void startThead(){
Thread[] grabThreads= new Thread[threadCount];
try{
//开启-数据抓取子线程
for(int i=0;i<grabThreads.length;i++){
int numL = num*100;
System.out.println(numL);
String url = "http url ?id=" + numL;
Thread searchThread=new TestThread(url);
num++;
grabThreads[i] = searchThread;
grabThreads[i].setDaemon(true);
grabThreads[i].start();
}
isRunGrabThread = true;
//监控子线程,全部完成程序退出
WhileLoop:
while(true){
//拨号策略控制
//reconnectControl();
//判断子线程是否运行完成
for(int i=0;i<threadCount;i++){
if(grabThreads[i].isAlive()){
Thread.sleep(10);
continue WhileLoop;
}
}
//所有抓取线程执行完毕
isRunGrabThread = false;
//子线程执行完毕则退出
break;
}
}
catch (Exception e) {
System.out.println("main主线程--系统异常!");
}
}
}

[java] view plaincopy

package com.yjf.soso;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Scanner;
public class Shua
implements Runnable
{
private static String strUrl = null;
private static long numL = 0L;
private static Scanner scanner = new Scanner(System.in);
public void run() {
HttpURLConnection connection = null;
InputStream urlStream = null;
URL url = null;
while (true)
try {
url = new URL(strUrl + numL);
connection = (HttpURLConnection)url.openConnection();
connection.connect();
urlStream = connection.getInputStream();
if (urlStream != null) {
numL += 1L;
urlStream.close();
System.out.print("\t" + numL);
if (numL % 30L == 0L) {
System.out.println();
}
}
Thread.sleep(10L); } catch (InterruptedException e) {
while (true) {
e.getMessage();
try {
Thread.sleep(1000L); } catch (InterruptedException ie) {ie.printStackTrace(); }
}
}
catch (MalformedURLException e)
{
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws MalformedURLException
{
System.out.println("");
int threadNum;
while (true)
{
System.out.println("请输入要生成的线程数:");
threadNum = scanner.nextInt();
System.out.println("请输入网址:");
String str = scanner.next();
if ((!(str.startsWith("http://"))) && (!(str.startsWith("https://")))) {
strUrl = "http://" + str;
System.out.println(strUrl);
} else {
strUrl = str;
}
if (str.indexOf("?") >= 0)
strUrl += "&num=";
else {
strUrl += "?num=";
}
System.out.println("--------------------------------------");
System.out.println("线程数:" + threadNum);
System.out.println("地址" + str);
System.out.println("请再次确认(Y/N):");
String tmp = scanner.next();
if ("Y".equalsIgnoreCase(tmp))
break;
if ("N".equalsIgnoreCase(tmp)) {
continue;
}
System.out.println("输入错误,请重新输入(Y/N):");
}
for (int i = 0; i < threadNum; ++i) {
Shua at = new Shua();
Thread t = new Thread(at);
t.start();
}
}
}