接前文
http://blog.itpub.net/29254281/viewspace-1344706/
http://blog.itpub.net/29254281/viewspace-1347985/
http://blog.itpub.net/29254281/viewspace-2134876/
http://blog.itpub.net/29254281/viewspace-2135131/
还是那个程序,在之前的基础上,改用Netty作为客户端.
也不知道用的到底对不对,先记录一下,以后慢慢学习.
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import java.io.IOException;
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import java.nio.channels.Selector;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.PreparedStatement;
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import java.sql.SQLException;
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import java.sql.Timestamp;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.LinkedBlockingQueue;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import io.netty.bootstrap.Bootstrap;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelInboundHandlerAdapter;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.nio.NioSocketChannel;
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import io.netty.handler.codec.LineBasedFrameDecoder;
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import io.netty.handler.codec.string.StringDecoder;
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class Reactor implements Runnable {
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public static int GETCOUNT() {
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return COUNT.get();
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}
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public static int getQueueSize() {
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return QUEUE.size();
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}
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private static final AtomicInteger COUNT = new AtomicInteger();
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private static final AtomicInteger TASKCOUNT = new AtomicInteger();
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public int startTask() {
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return TASKCOUNT.incrementAndGet();
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}
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public int finishTask() {
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return TASKCOUNT.decrementAndGet();
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}
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public int incrementAndGet() {
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return COUNT.incrementAndGet();
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}
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public final Selector selector;
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private static BlockingQueue QUEUE = new LinkedBlockingQueue();
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public void addTask(Task task) {
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try {
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QUEUE.put(task);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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public Reactor() throws IOException {
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selector = Selector.open();
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}
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@Override
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public void run() {
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EventLoopGroup group = new NioEventLoopGroup(3);
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final Reactor reactor = this;
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while (!Thread.interrupted()) {
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int maxClient = 500;
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Task task = null;
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if (TASKCOUNT.get() < maxClient) {
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try {
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while ((task = (Task) QUEUE.take()) != null) {
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final Task t = task;
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reactor.startTask();
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Bootstrap boot = new Bootstrap();
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boot.group(group).channel(NioSocketChannel.class).handler(new ChannelInitializer() {
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@Override
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protected void initChannel(Channel ch) throws Exception {
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ch.pipeline().addLast(new LineBasedFrameDecoder(409600));
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ch.pipeline().addLast(new StringDecoder());
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ch.pipeline().addLast(new HttpClientInboundHandler(reactor, t));
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}
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});
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boot.connect(task.getHost(), task.getPort());
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if (TASKCOUNT.get() > maxClient) {
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break;
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}
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}
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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} else {
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//如果已经连接了500个网页,则主线程休眠一段时间.
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try {
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Thread.sleep(10);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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group.shutdownGracefully();
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}
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}
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class HttpClientInboundHandler extends ChannelInboundHandlerAdapter {
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private Task task;
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private Reactor reactor;
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@Override
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public void channelInactive(ChannelHandlerContext ctx) throws Exception {
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ctx.channel().closeFuture();
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ctx.close();
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this.reactor.finishTask();
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task.setEndtime(System.currentTimeMillis());
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this.reactor.incrementAndGet();
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new ParseHandler(reactor, task).run();
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}
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public HttpClientInboundHandler(Reactor reactor, Task task) {
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this.task = task;
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this.reactor = reactor;
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}
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@Override
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public void channelActive(ChannelHandlerContext ctx) throws Exception {
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task.setStarttime(System.currentTimeMillis());
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StringBuilder sb = new StringBuilder();
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sb.append("GET " + task.getCurrentPath() + " HTTP/1.0\r\n");
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sb.append("HOST:" + task.getHost() + "\r\n");
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sb.append("Accept:*/*\r\n");
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sb.append("\r\n");
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ByteBuf bb = Unpooled.copiedBuffer(sb.toString().getBytes("utf8"));
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ctx.writeAndFlush(bb);
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}
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@Override
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public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
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String content = (String) msg;
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task.getContent().append(content);
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task.getContent().append("\n");
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
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cause.printStackTrace();
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ctx.close();
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}
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}
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public class Probe {
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public static void main(String[] args) throws IOException, InterruptedException {
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for (int i = 0; i < 1; i++) {
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Reactor reactor = new Reactor();
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reactor.addTask(new Task("news.163.com", 80, "/index.html"));
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new Thread(reactor, "ReactorThread_" + i).start();
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}
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long start = System.currentTimeMillis();
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while (true) {
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Thread.sleep(1000);
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long end = System.currentTimeMillis();
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float interval = ((end - start) / 1000);
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int connectTotal = Reactor.GETCOUNT();
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int persistenceTotal = PersistenceHandler.GETCOUNT();
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int connectps = Math.round(connectTotal / interval);
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int persistenceps = Math.round(persistenceTotal / interval);
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System.out.print("\r连接总数:" + connectTotal + " \t每秒连接:" + connectps + "\t连接队列剩余:" + Reactor.getQueueSize()
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+ " \t持久化总数:" + persistenceTotal + " \t每秒持久化:" + persistenceps + "\t持久化队列剩余:"
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+ PersistenceHandler.getInstance().getSize());
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}
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}
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}
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class Task {
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private String host;
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private int port;
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private String currentPath;
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private long starttime;
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private long endtime;
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private String type;
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private StringBuilder content = new StringBuilder(2400);
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private int state;
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private boolean isValid = true;
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public Task() {
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}
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public Task(String host, int port, String path) {
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init(host, port, path);
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}
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public void init(String host, int port, String path) {
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this.setCurrentPath(path);
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this.host = host;
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this.port = port;
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}
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public long getStarttime() {
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return starttime;
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}
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public void setStarttime(long starttime) {
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this.starttime = starttime;
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}
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public long getEndtime() {
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return endtime;
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}
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public void setEndtime(long endtime) {
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this.endtime = endtime;
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}
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public boolean isValid() {
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return isValid;
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}
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public void setValid(boolean isValid) {
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this.isValid = isValid;
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}
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public int getState() {
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return state;
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}
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public void setState(int state) {
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this.state = state;
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}
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public String getCurrentPath() {
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return currentPath;
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}
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public void setCurrentPath(String currentPath) {
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this.currentPath = currentPath;
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int i = 0;
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if (currentPath.indexOf("?") != -1) {
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i = currentPath.indexOf("?");
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} else {
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if (currentPath.indexOf("#") != -1) {
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i = currentPath.indexOf("#");
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} else {
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i = currentPath.length();
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}
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}
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this.type = currentPath.substring(currentPath.indexOf(".") + 1, i);
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}
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public long getTaskTime() {
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return getEndtime() - getStarttime();
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}
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public String getType() {
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return type;
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}
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public void setType(String type) {
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this.type = type;
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}
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public String getHost() {
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return host;
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}
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public int getPort() {
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return port;
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}
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public StringBuilder getContent() {
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return content;
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}
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public void setContent(StringBuilder content) {
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this.content = content;
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}
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}
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class ParseHandler implements Runnable {
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private static final Set SET = new HashSet();
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PersistenceHandler persistencehandler = PersistenceHandler.getInstance();
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List domainlist = new ArrayList();
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Task task;
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private interface Filter {
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void doFilter(Task fatherTask, Task newTask, String path, Filter chain);
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}
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private class FilterChain implements Filter {
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private List list = new ArrayList();
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{
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addFilter(new TwoLevel());
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addFilter(new OneLevel());
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addFilter(new FullPath());
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addFilter(new Root());
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addFilter(new Default());
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}
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private void addFilter(Filter filter) {
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list.add(filter);
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}
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private Iterator it = list.iterator();
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@Override
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public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
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if (it.hasNext()) {
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((Filter) it.next()).doFilter(fatherTask, newTask, path, chain);
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}
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}
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}
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private class TwoLevel implements Filter {
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@Override
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public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
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if (path.startsWith("../../")) {
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String prefix = getPrefix(fatherTask.getCurrentPath(), 3);
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newTask.init(fatherTask.getHost(), fatherTask.getPort(), path.replace("../../", prefix));
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} else {
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chain.doFilter(fatherTask, newTask, path, chain);
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}
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}
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}
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private class OneLevel implements Filter {
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@Override
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public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
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if (path.startsWith("../")) {
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String prefix = getPrefix(fatherTask.getCurrentPath(), 2);
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newTask.init(fatherTask.getHost(), fatherTask.getPort(), path.replace("../", prefix));
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} else {
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chain.doFilter(fatherTask, newTask, path, chain);
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}
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}
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}
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private class FullPath implements Filter {
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@Override
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public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
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if (path.startsWith("http://")) {
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Iterator it = domainlist.iterator();
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boolean flag = false;
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while (it.hasNext()) {
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String domain = (String) it.next();
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if (path.startsWith("http://" + domain + "/")) {
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newTask.init(domain, fatherTask.getPort(), path.replace("http://" + domain + "/", "/"));
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flag = true;
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break;
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}
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}
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if (!flag) {
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newTask.setValid(false);
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}
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} else {
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chain.doFilter(fatherTask, newTask, path, chain);
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}
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}
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}
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private class Root implements Filter {
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@Override
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public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
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if (path.startsWith("/")) {
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newTask.init(fatherTask.getHost(), fatherTask.getPort(), path);
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} else {
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chain.doFilter(fatherTask, newTask, path, chain);
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}
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}
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}
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private class Default implements Filter {
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@Override
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public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
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if (path.contains(":")) {
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newTask.setValid(false);
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return;
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}
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String prefix = getPrefix(fatherTask.getCurrentPath(), 1);
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newTask.init(fatherTask.getHost(), fatherTask.getPort(), prefix + "/" + path);
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}
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}
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public ParseHandler(Reactor reactor, Task task) {
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this.reactor = reactor;
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this.task = task;
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// 增加白名单
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this.domainlist.add("news.163.com");
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}
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private Reactor reactor;
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private Pattern pattern = Pattern.compile("\"[^\"]+\\.htm[^\"]*\"");
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private void parseTaskState(Task task) {
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if (task.getContent().toString().startsWith("HTTP/1.1")) {
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task.setState(Integer.parseInt(task.getContent().substring(9, 12)));
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} else {
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try {
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task.setState(Integer.parseInt(task.getContent().substring(9, 12)));
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} catch (Exception ex) {
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ex.printStackTrace();
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System.out.println(task.getContent());
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}
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}
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}
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/**
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* @param fatherTask
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* @param path
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* @throws Exception
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*/
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private void createNewTask(Task fatherTask, String path) throws Exception {
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Task newTask = new Task();
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FilterChain filterchain = new FilterChain();
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filterchain.doFilter(fatherTask, newTask, path, filterchain);
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if (newTask.isValid()) {
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synchronized (SET) {
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if (SET.contains(newTask.getHost() + newTask.getCurrentPath())) {
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return;
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}
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SET.add(newTask.getHost() + newTask.getCurrentPath());
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}
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reactor.addTask(newTask);
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}
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}
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private String getPrefix(String s,
网页标题：网页主动探测工具-增加Netty模式
网页网址：http://bzwzjz.com/article/jhpshc.html
