Java 演示SocketChannel的异步连接。

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import java.net.InetSocketAddress;

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import java.nio.channels.SocketChannel;/**来 自 nowjava.com**/

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public class Main {

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  public static void main(String[] argv) throws Exception {

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    String host = "localhost";

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    int port = 80;

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    InetSocketAddress addr = new InetSocketAddress(host, port);

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    SocketChannel sc = SocketChannel.open();

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    sc.configureBlocking(false);

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    System.out.println("initiating connection");

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    sc.connect(addr);/** from 时代Java**/

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    while (!sc.finishConnect()) {

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      doSomethingUseful();

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    }

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    System.out.println("connection established");

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    // Do something with the connected socket

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    // The SocketChannel is still nonblocking

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