java nio 简单例子出现 java.io.IOException: 远程主机强迫关闭了一个现有的连接错误
0
悬赏园豆：5
[已解决问题]
解决于 2015-11-25 15:51
--------server start-----
---new client connect----
message from client:-->java.io.IOException: 远程主机强迫关闭了一个现有的连接。
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:197)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
at com.lzyer.newio.ServerThread.run(NioTcpServer4.java:69)
at java.lang.Thread.run(Thread.java:745)
Error in poll loop of server
求帮忙看一下，谢谢。
server：
import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.InetSocketAddress; import java.nio.ByteBuffer; import java.nio.channels.SelectionKey; import java.nio.channels.Selector; import java.nio.channels.ServerSocketChannel; import java.nio.channels.SocketChannel; import java.util.Iterator; class ServerThread implements Runnable { private Selector selector; private boolean running; public ServerThread(Selector selector) { this.selector = selector; this.running = true; } @Override public void run() { while (this.running) { try { while (this.selector.select() > 0) { Iterator<SelectionKey> iter = this.selector.selectedKeys() .iterator(); while (iter.hasNext()) { SelectionKey key = iter.next(); iter.remove(); if (!key.isValid()) continue; if (key.isAcceptable()) { SocketChannel channel = ((ServerSocketChannel) key .channel()).accept(); channel.configureBlocking(false); channel.register(selector, SelectionKey.OP_READ | SelectionKey.OP_WRITE); System.out.println("---new client connect----"); channel.write(ByteBuffer.wrap("hello client\n" .getBytes())); } else if (key.isReadable()) { System.out.print("message from client:-->"); ByteBuffer buffer = ByteBuffer.allocate(1024); SocketChannel channel = (SocketChannel) key .channel(); int len = 0; while ((len = channel.read(buffer)) > 0) { buffer.flip(); System.out.println(new String(buffer.array(), 0, len)); buffer.clear(); } channel.register(selector, SelectionKey.OP_WRITE); } else if (key.isWritable()) { SocketChannel channel = (SocketChannel) key .channel(); System.out.print("please enter:"); BufferedReader reader = new BufferedReader( new InputStreamReader(System.in)); String line = reader.readLine(); channel.write(ByteBuffer.wrap((line + "\n") .getBytes())); channel.register(selector, SelectionKey.OP_READ); } } Thread.sleep(2000); } } catch (Exception e) { this.running = false; System.out.println("Error in poll loop of server"); // System.out.println(e.getMessage()); e.printStackTrace(); } } } } public class NioTcpServer4 { public static void main(String[] args) { ServerSocketChannel server = null; Selector selector = null; try { server = ServerSocketChannel.open(); server.configureBlocking(false); server.bind(new InetSocketAddress(1001)); selector = Selector.open(); server.register(selector, SelectionKey.OP_ACCEPT); System.out.println("--------server start-----"); } catch (Exception e) { System.err.println("server can't set up"); e.printStackTrace(); System.exit(1); } new Thread(new ServerThread(selector)).start(); } }
client：
import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.InetSocketAddress; import java.nio.ByteBuffer; import java.nio.channels.SelectionKey; import java.nio.channels.Selector; import java.nio.channels.SocketChannel; import java.util.Iterator; class ClientThread implements Runnable { private Selector selector; private boolean running; public ClientThread(Selector selector) { this.selector = selector; } @Override public void run() { while(this.running) { try { while(selector.select()>0) { Iterator<SelectionKey> iter = selector.selectedKeys().iterator(); while(iter.hasNext()) { SelectionKey key = iter.next(); iter.remove(); if(key.isConnectable()) { SocketChannel channel = (SocketChannel)key.channel(); channel.configureBlocking(false); channel.finishConnect(); channel.register(this.selector, SelectionKey.OP_READ | SelectionKey.OP_WRITE); System.out.println("+++++connect server success++++"); channel.write(ByteBuffer.wrap("hello client\n".getBytes())); }else if(key.isReadable()) { SocketChannel channel = (SocketChannel)key.channel(); ByteBuffer buffer = ByteBuffer.allocate(1024); System.out.print("message from server:-->"); int len=0; while((len = channel.read(buffer))>0) { buffer.flip(); System.out.println(new String(buffer.array(), 0, len)); buffer.clear(); } channel.register(this.selector, SelectionKey.OP_WRITE); }else if(key.isWritable()) { SocketChannel channel = (SocketChannel)key.channel(); System.out.print("please enter:"); BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String line = reader.readLine(); channel.write(ByteBuffer.wrap((line+"\n").getBytes())); channel.register(this.selector, SelectionKey.OP_READ); } } Thread.sleep(2000); } }catch(Exception e) { this.running = false; System.out.println("Error in poll loop of client"); System.out.println(e.getMessage()); } System.out.println("rttttt"); } System.out.println("11111"); } } public class NioTcpClient4 { public static void main(String[] args) { SocketChannel client = null; Selector selector = null; try { client = (SocketChannel)SocketChannel.open(); client.configureBlocking(false); client.connect(new InetSocketAddress("localhost", 1001)); selector = Selector.open(); client.register(selector, SelectionKey.OP_CONNECT); }catch(Exception e) { System.out.println("client can't setup"); } new Thread(new ClientThread(selector)).start(); System.out.println("asa"); } }
最佳答案
0
ClientThread类中没有对running手动初始化，导致running一直为false
