接前文
http://blog.itpub.net/29254281/viewspace-1344706/
http://blog.itpub.net/29254281/viewspace-1347985/
http://blog.itpub.net/29254281/viewspace-2134876/

之前的程式碼被大神懟了..被怒批雜亂無章，誤人子弟
我估計主要是因為物件導向的程度不夠.過程化太明顯了

在網上找了一個Reactor模式的例子,又改了改自己的程式.
因為Oracle太笨重了,這回乾脆換了MySQL好了

改寫之後的程式,在我的電腦上,使用 2執行緒,最大500連線的配置,效能最好。

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
import java.nio.charset.Charset;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
class Reactor implements Runnable {
public static int GETCOUNT() {
return COUNT.get();
}
public static int getQueueSize() {
return QUEUE.size();
}
private static final AtomicInteger COUNT = new AtomicInteger();
private static final AtomicInteger TASKCOUNT = new AtomicInteger();
public int startTask() {
return TASKCOUNT.incrementAndGet();
}
public int finishTask() {
return TASKCOUNT.decrementAndGet();
}
public int incrementAndGet() {
return COUNT.incrementAndGet();
}
public final Selector selector;
private static BlockingQueue<Task> QUEUE = new LinkedBlockingQueue<Task>();
public void addTask(Task task) {
try {
QUEUE.put(task);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public Reactor() throws IOException {
selector = Selector.open();
}
@Override
public void run() {
try {
while (!Thread.interrupted()) {
int maxClient = 500;
Task task = null;
if (TASKCOUNT.get() < maxClient) {
while ((task = (Task) QUEUE.poll()) != null) {
new Connector(this, task).run();
if (TASKCOUNT.get() > maxClient) {
break;
}
}
}
selector.select();
Set<SelectionKey> selectionKeys = selector.selectedKeys();
Iterator<SelectionKey> it = selectionKeys.iterator();
// Selector如果發現channel有OP_ACCEPT或READ事件發生，下列遍歷就會進行。
while (it.hasNext()) {
// 來一個事件第一次觸發一個accepter執行緒
// 以後觸發SocketReadHandler
SelectionKey selectionKey = it.next();
dispatch(selectionKey);
}
selectionKeys.clear();
}
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 執行Acceptor或SocketReadHandler
*
* @param key
*/
void dispatch(SelectionKey key) {
Runnable r = (Runnable) (key.attachment());
if (r != null) {
r.run();
}
}
}
class Connector implements Runnable {
private Reactor reactor;
private Task task;
public Connector(Reactor reactor, Task task) {
this.reactor = reactor;
this.task = task;
}
@Override
public void run() {
try {
reactor.startTask();
task.setStarttime(System.currentTimeMillis());
SocketAddress addr = new InetSocketAddress(task.getHost(), 80);
SocketChannel socketChannel = SocketChannel.open();
socketChannel.configureBlocking(false);
socketChannel.connect(addr);
BaseHandler base = new BaseHandler();
base.setTask(task);
base.setSelector(reactor.selector);
base.setSocketChannel(socketChannel);
base.setReactor(reactor);
if (socketChannel != null)// 呼叫Handler來處理channel
socketChannel.register(reactor.selector, SelectionKey.OP_CONNECT, new SocketWriteHandler(base));
} catch (IOException e) {
e.printStackTrace();
}
}
}
class BaseHandler {
private Selector selector;
private SocketChannel socketChannel;
private Task task;
private ByteBuffer byteBuffer = ByteBuffer.allocate(2400);
private Reactor reactor;
public Reactor getReactor() {
return reactor;
}
public void setReactor(Reactor reactor) {
this.reactor = reactor;
}
public Selector getSelector() {
return selector;
}
public void setSelector(Selector selector) {
this.selector = selector;
}
public SocketChannel getSocketChannel() {
return socketChannel;
}
public void setSocketChannel(SocketChannel socketChannel) {
this.socketChannel = socketChannel;
}
public Task getTask() {
return task;
}
public void setTask(Task task) {
this.task = task;
}
public ByteBuffer getByteBuffer() {
return byteBuffer;
}
}
class SocketWriteHandler implements Runnable {
BaseHandler baseHandler;
public SocketWriteHandler(BaseHandler baseHandler) {
this.baseHandler = baseHandler;
ByteBuffer byteBuffer = baseHandler.getByteBuffer();
Task task = baseHandler.getTask();
try {
byteBuffer.put(("GET " + task.getCurrentPath() + " HTTP/1.0\r\n").getBytes("utf8"));
byteBuffer.put(("HOST:" + task.getHost() + "\r\n").getBytes("utf8"));
byteBuffer.put(("Accept:*/*\r\n").getBytes("utf8"));
byteBuffer.put(("\r\n").getBytes("utf8"));
byteBuffer.flip();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void run() {
try {
while (!baseHandler.getSocketChannel().finishConnect()) {
System.out.println("Waiting Connected");
}
baseHandler.getSocketChannel().write(baseHandler.getByteBuffer());
if (baseHandler.getByteBuffer().hasRemaining()) {
baseHandler.getByteBuffer().compact();
baseHandler.getSocketChannel().register(baseHandler.getSelector(), SelectionKey.OP_WRITE, this);
System.out.println("Continue Write");
} else {
baseHandler.getSocketChannel().register(baseHandler.getSelector(), SelectionKey.OP_READ,
new SocketReadHandler(baseHandler));
baseHandler.getByteBuffer().clear();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
class SocketReadHandler implements Runnable {
Charset charset = Charset.forName("utf8");
Charset gbkcharset = Charset.forName("gbk");
BaseHandler baseHandler;
public SocketReadHandler(BaseHandler baseHandler) {
this.baseHandler = baseHandler;
}
@Override
public void run() {
try {
SocketChannel channel = baseHandler.getSocketChannel();
ByteBuffer byteBuffer = baseHandler.getByteBuffer();
Task task = baseHandler.getTask();
int length;
while ((length = channel.read(byteBuffer)) > 0) {
byteBuffer.flip();
task.getContent().append(charset.decode(charset.encode(gbkcharset.decode(byteBuffer))).toString());
byteBuffer.compact();
}
if (length == -1) {
channel.close();
task.setEndtime(System.currentTimeMillis());
baseHandler.getReactor().incrementAndGet();
baseHandler.getReactor().finishTask();
new ParseHandler(task, baseHandler.getReactor()).run();
} else {
baseHandler.getSocketChannel().register(baseHandler.getSelector(), SelectionKey.OP_READ, this);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public class Probe {
public static void main(String[] args) throws IOException, InterruptedException {
for (int i = 0; i <2; i++) {
Reactor reactor = new Reactor();
reactor.addTask(new Task("news.163.com", 80, "/index.html"));
new Thread(reactor, "ReactorThread_" + i).start();
}
long start = System.currentTimeMillis();
while (true) {
Thread.sleep(1000);
long end = System.currentTimeMillis();
float interval = ((end - start) / 1000);
int connectTotal = Reactor.GETCOUNT();
int persistenceTotal = PersistenceHandler.GETCOUNT();
int connectps = Math.round(connectTotal / interval);
int persistenceps = Math.round(persistenceTotal / interval);
System.out.print("\r連線總數:" + connectTotal + " \t每秒連線:" + connectps + "\t連線佇列剩餘:" + Reactor.getQueueSize()
+ " \t持久化總數:" + persistenceTotal + " \t每秒持久化:" + persistenceps + "\t持久化佇列剩餘:"
+ PersistenceHandler.getInstance().getSize());
}
}
}
class Task {
private String host;
private int port;
private String currentPath;
private long starttime;
private long endtime;
private String type;
private StringBuilder content = new StringBuilder(2400);
private int state;
private boolean isValid = true;
public Task() {
}
public Task(String host, int port, String path) {
init(host, port, path);
}
public void init(String host, int port, String path) {
this.setCurrentPath(path);
this.host = host;
this.port = port;
}
public long getStarttime() {
return starttime;
}
public void setStarttime(long starttime) {
this.starttime = starttime;
}
public long getEndtime() {
return endtime;
}
public void setEndtime(long endtime) {
this.endtime = endtime;
}
public boolean isValid() {
return isValid;
}
public void setValid(boolean isValid) {
this.isValid = isValid;
}
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
public String getCurrentPath() {
return currentPath;
}
public void setCurrentPath(String currentPath) {
this.currentPath = currentPath;
int i = 0;
if (currentPath.indexOf("?") != -1) {
i = currentPath.indexOf("?");
} else {
if (currentPath.indexOf("#") != -1) {
i = currentPath.indexOf("#");
} else {
i = currentPath.length();
}
}
this.type = currentPath.substring(currentPath.indexOf(".") + 1, i);
}
public long getTaskTime() {
return getEndtime() - getStarttime();
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getHost() {
return host;
}
public int getPort() {
return port;
}
public StringBuilder getContent() {
return content;
}
public void setContent(StringBuilder content) {
this.content = content;
}
}
class ParseHandler implements Runnable {
private static final Set SET = new HashSet();
PersistenceHandler persistencehandler = PersistenceHandler.getInstance();
List domainlist = new ArrayList();
Task task;
private interface Filter {
void doFilter(Task fatherTask, Task newTask, String path, Filter chain);
}
private class FilterChain implements Filter {
private List list = new ArrayList();
{
addFilter(new TwoLevel());
addFilter(new OneLevel());
addFilter(new FullPath());
addFilter(new Root());
addFilter(new Default());
}
private void addFilter(Filter filter) {
list.add(filter);
}
private Iterator it = list.iterator();
@Override
public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
if (it.hasNext()) {
((Filter) it.next()).doFilter(fatherTask, newTask, path, chain);
}
}
}
private class TwoLevel implements Filter {
@Override
public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
if (path.startsWith("../../")) {
String prefix = getPrefix(fatherTask.getCurrentPath(), 3);
newTask.init(fatherTask.getHost(), fatherTask.getPort(), path.replace("../../", prefix));
} else {
chain.doFilter(fatherTask, newTask, path, chain);
}
}
}
private class OneLevel implements Filter {
@Override
public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
if (path.startsWith("../")) {
String prefix = getPrefix(fatherTask.getCurrentPath(), 2);
newTask.init(fatherTask.getHost(), fatherTask.getPort(), path.replace("../", prefix));
} else {
chain.doFilter(fatherTask, newTask, path, chain);
}
}
}
private class FullPath implements Filter {
@Override
public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
if (path.startsWith("http://")) {
Iterator it = domainlist.iterator();
boolean flag = false;
while (it.hasNext()) {
String domain = (String) it.next();
if (path.startsWith("http://" + domain + "/")) {
newTask.init(domain, fatherTask.getPort(), path.replace("http://" + domain + "/", "/"));
flag = true;
break;
}
}
if (!flag) {
newTask.setValid(false);
}
} else {
chain.doFilter(fatherTask, newTask, path, chain);
}
}
}
private class Root implements Filter {
@Override
public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
if (path.startsWith("/")) {
newTask.init(fatherTask.getHost(), fatherTask.getPort(), path);
} else {
chain.doFilter(fatherTask, newTask, path, chain);
}
}
}
private class Default implements Filter {
@Override
public void doFilter(Task fatherTask, Task newTask, String path, Filter chain) {
if (path.contains(":")) {
newTask.setValid(false);
return;
}
String prefix = getPrefix(fatherTask.getCurrentPath(), 1);
newTask.init(fatherTask.getHost(), fatherTask.getPort(), prefix + "/" + path);
}
}
public ParseHandler(Task task, Reactor reactor) {
this.task = task;
this.reactor = reactor;
// 增加白名單
this.domainlist.add("news.163.com");
}
private Reactor reactor;
private Pattern pattern = Pattern.compile("\"[^\"]+\\.htm[^\"]*\"");
private void parseTaskState(Task task) {
if (task.getContent().toString().startsWith("HTTP/1.1")) {
task.setState(Integer.parseInt(task.getContent().substring(9, 12)));
} else {
task.setState(Integer.parseInt(task.getContent().substring(9, 12)));
}
}
/**
* @param fatherTask
* @param path
* @throws Exception
*/
private void createNewTask(Task fatherTask, String path) throws Exception {
Task newTask = new Task();
FilterChain filterchain = new FilterChain();
filterchain.doFilter(fatherTask, newTask, path, filterchain);
if (newTask.isValid()) {
synchronized (SET) {
if (SET.contains(newTask.getHost() + newTask.getCurrentPath())) {
return;
}
SET.add(newTask.getHost() + newTask.getCurrentPath());
}
reactor.addTask(newTask);
}
}
private String getPrefix(String s, int count) {
String prefix = s;
while (count > 0) {
prefix = prefix.substring(0, prefix.lastIndexOf("/"));
count--;
}
return "".equals(prefix) ? "/" : prefix;
}
@Override
public void run() {
try {
parseTaskState(task);
if (200 == task.getState()) {
Matcher matcher = pattern.matcher(task.getContent());
while (matcher.find()) {
String path = matcher.group();
if (!path.contains(" ") && !path.contains("\t") && !path.contains("(") && !path.contains(")")) {
path = path.substring(1, path.length() - 1);
createNewTask(task, path);
}
}
}
persistencehandler.addTask(task);
} catch (Exception e) {
e.printStackTrace();
}
}
}
class PersistenceHandler implements Runnable {
private static class SingletonHandler {
private static PersistenceHandler obj = new PersistenceHandler();
}
public static PersistenceHandler getInstance() {
return SingletonHandler.obj;
}
static {
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static int GETCOUNT() {
return COUNT.get();
}
private static final AtomicInteger COUNT = new AtomicInteger();
private BlockingQueue persistencelist;
public PersistenceHandler() {
this.persistencelist = new LinkedBlockingQueue();
new Thread(this, "PersistenceThread").start();
}
public void addTask(Task task) {
try {
this.persistencelist.put(task);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public int getSize() {
return persistencelist.size();
}
private Connection conn;
private PreparedStatement ps;
@Override
public void run() {
try {
conn = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/mvbox", "xx", "xx");
conn.setAutoCommit(false);
ps = conn.prepareStatement(
"insert into probe(host,path,state,tasktime,type,length,createtime) values(?,?,?,?,?,?,?)");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
while (true) {
this.handler();
COUNT.addAndGet(1);
}
}
private void handler() {
try {
Task task = (Task) persistencelist.take();
ps.setString(1, task.getHost());
ps.setString(2, task.getCurrentPath());
ps.setInt(3, task.getState());
ps.setLong(4, task.getTaskTime());
ps.setString(5, task.getType());
ps.setInt(6, task.getContent().toString().length());
ps.setTimestamp(7, new Timestamp(task.getEndtime()));
ps.addBatch();
if (GETCOUNT() % 500 == 0) {
ps.executeBatch();
conn.commit();
}
} catch (InterruptedException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
}

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