本文整理了Java中java.net.ServerSocket.getLocalPort()方法的一些代码示例，展示了ServerSocket.getLocalPort()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ServerSocket.getLocalPort()方法的具体详情如下：
包路径：java.net.ServerSocket
类名称：ServerSocket
方法名：getLocalPort

ServerSocket.getLocalPort介绍

[英]Gets the local port of this server socket or -1 if the socket is unbound.
[中]获取此服务器套接字的本地端口，如果套接字未绑定，则获取-1。

代码示例

代码示例来源：origin: apache/incubator-dubbo

public static int getAvailablePort() {
  try (ServerSocket ss = new ServerSocket()) {
    ss.bind(null);
    return ss.getLocalPort();
  } catch (IOException e) {
    return getRandomPort();
  }
}

代码示例来源：origin: apache/zeppelin

public static int findRandomAvailablePortOnAllLocalInterfaces() throws IOException {
 int port;
 try (ServerSocket socket = new ServerSocket(0);) {
  port = socket.getLocalPort();
  socket.close();
 }
 return port;
}

代码示例来源：origin: Alluxio/alluxio

/** This method will close the socket upon first initialization. */
protected InetSocketAddress getWebAddressFromBindSocket() throws IOException {
 Preconditions.checkNotNull(mWebBindSocket, "mWebBindSocket");
 InetSocketAddress socketAddr = new InetSocketAddress(mWebBindSocket.getInetAddress(),
   mWebBindSocket.getLocalPort());
 mWebBindSocket.close();
 return socketAddr;
}

代码示例来源：origin: alibaba/jstorm

/**
 * Check whether the port is available to bind
 *
 * @param port port
 * @return -1 means unavailable, otherwise available
 * @throws IOException
 */
public static int tryPort(int port) throws IOException {
  ServerSocket socket = new ServerSocket(port);
  int rtn = socket.getLocalPort();
  socket.close();
  return rtn;
}

代码示例来源：origin: apache/incubator-dubbo

public static int getAvailablePort() {
  try (ServerSocket ss = new ServerSocket()) {
    ss.bind(null);
    return ss.getLocalPort();
  } catch (IOException e) {
    return getRandomPort();
  }
}

代码示例来源：origin: apache/geode

/**
 * binds the server socket and gets threads going
 */
private void startAcceptor() throws ConnectionException {
 int localPort;
 int p = this.port;
 createServerSocket();
 try {
  localPort = socket.getLocalPort();
  id = new InetSocketAddress(socket.getInetAddress(), localPort);
  stopped = false;
  thread = new LoggingThread("P2P Listener Thread " + id, this);
  try {
   thread.setPriority(Thread.MAX_PRIORITY);
  } catch (Exception e) {
   logger.info("unable to set listener priority: {}", e.getMessage());
  }
  if (!Boolean.getBoolean("p2p.test.inhibitAcceptor")) {
   thread.start();
  } else {
   logger.fatal(
     "p2p.test.inhibitAcceptor was found to be set, inhibiting incoming tcp/ip connections");
   socket.close();
  }
 } catch (IOException io) {
  String s = "While creating ServerSocket on port " + p;
  throw new ConnectionException(s, io);
 }
 this.port = localPort;
}

代码示例来源：origin: apache/hive

/**
 * Finds a free port on the machine.
 *
 * @return
 * @throws IOException
 */
public static int findFreePort() throws IOException {
 ServerSocket socket= new ServerSocket(0);
 int port = socket.getLocalPort();
 socket.close();
 return port;
}

代码示例来源：origin: stackoverflow.com

ServerSocket s = new ServerSocket(0);
System.out.println("listening on port: " + s.getLocalPort());

代码示例来源：origin: apache/hive

public static int findFreePort() throws IOException {
  ServerSocket socket= new ServerSocket(0);
  int port = socket.getLocalPort();
  socket.close();
  return port;
 }
}

代码示例来源：origin: OryxProject/oryx

/**
 * Binds to a free ephemeral port, and then releases it. The returned port is quite likely
 * to be free for use after this, but is not entirely guaranteed to be.
 *
 * @return a (probably) free ephemeral port
 * @throws IOException if an error occurs while binding to a port
 */
public static int chooseFreePort() throws IOException {
 try (ServerSocket socket = new ServerSocket(0, 0)) {
  return socket.getLocalPort();
 }
}

代码示例来源：origin: alibaba/mdrill

/**
 * ԴãжǷ԰ض˿
 * 
 * @param port
 * @return
 * @throws IOException
 */
public static int try_port(int port) throws IOException {
  ServerSocket socket = new ServerSocket(port);
  int rtn = socket.getLocalPort();
  socket.close();
  return rtn;
}

代码示例来源：origin: SonarSource/sonarqube

int getAvailable(InetAddress address) {
  try (ServerSocket socket = new ServerSocket(0, 50, address)) {
   return socket.getLocalPort();
  } catch (IOException e) {
   throw new IllegalStateException("Fail to find an available port on " + address, e);
  }
 }
}

代码示例来源：origin: btraceio/btrace

private static int findFreePort() {
    ServerSocket server = null;
    int port = 0;
    try {
      server = new ServerSocket(0);
      port = server.getLocalPort();
    } catch (IOException e) {
      port = DEFAULT_PORT;
    } finally {
      try {
        server.close();
      } catch (Exception e) {
        // ignore
      }
    }
    return port;
  }
}

代码示例来源：origin: apache/incubator-gobblin

@Override
public int random() throws Exception {
  try (ServerSocket serverSocket = new ServerSocket(0)) {
   return serverSocket.getLocalPort();
  }
}

代码示例来源：origin: jamesdbloom/mockserver

public static int findFreePort() {
    int port;
    try {
      ServerSocket server = new ServerSocket(0);
      port = server.getLocalPort();
      server.close();
      // allow time for the socket to be released
      TimeUnit.MILLISECONDS.sleep(250);
    } catch (Exception e) {
      throw new RuntimeException("Exception while trying to find a free port", e);
    }
    return port;
  }
}

代码示例来源：origin: apache/incubator-gobblin

@Override
 public int specific(int port) throws Exception {
  try (ServerSocket serverSocket = new ServerSocket(port)) {
   return serverSocket.getLocalPort();
  }
 }
}

代码示例来源：origin: apache/hive

/**
 * Finds a free port on the machine, but allow the
 * ability to specify a port number to not use, no matter what.
 */
public static int findFreePortExcepting(int portToExclude) throws IOException {
 ServerSocket socket1 = null;
 ServerSocket socket2 = null;
 try {
  socket1 = new ServerSocket(0);
  socket2 = new ServerSocket(0);
  if (socket1.getLocalPort() != portToExclude) {
   return socket1.getLocalPort();
  }
  // If we're here, then socket1.getLocalPort was the port to exclude
  // Since both sockets were open together at a point in time, we're
  // guaranteed that socket2.getLocalPort() is not the same.
  return socket2.getLocalPort();
 } finally {
  if (socket1 != null){
   socket1.close();
  }
  if (socket2 != null){
   socket2.close();
  }
 }
}

代码示例来源：origin: go-lang-plugin-org/go-lang-idea-plugin

private static int findFreePort() {
  try(ServerSocket socket = new ServerSocket(0)) {
   socket.setReuseAddress(true);
   return socket.getLocalPort();
  }
  catch (Exception ignore) {
  }
  throw new IllegalStateException("Could not find a free TCP/IP port to start dlv");
 }
}

代码示例来源：origin: org.apache.hadoop/hadoop-common

/**
 * Return a free port number. There is no guarantee it will remain free, so
 * it should be used immediately.
 *
 * @returns A free port for binding a local socket
 */
public static int getFreeSocketPort() {
 int port = 0;
 try {
  ServerSocket s = new ServerSocket(0);
  port = s.getLocalPort();
  s.close();
  return port;
 } catch (IOException e) {
  // Could not get a free port. Return default port 0.
 }
 return port;
}

代码示例来源：origin: apache/flink

/**
 * Find a non-occupied port.
 *
 * @return A non-occupied port.
 */
public static int getAvailablePort() {
  for (int i = 0; i < 50; i++) {
    try (ServerSocket serverSocket = new ServerSocket(0)) {
      int port = serverSocket.getLocalPort();
      if (port != 0) {
        return port;
      }
    }
    catch (IOException ignored) {}
  }
  throw new RuntimeException("Could not find a free permitted port on the machine.");
}