打开第二个Idea导入新项目，就会报这个错误，原因是由于Log4JPlugin造成的。启动这个插件会打开本机的4454进行socket通讯。
在Log4Jplugin.jar中有一个LogServer类，代码如下:
package com.webspherious;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;
import javax.net.ServerSocketFactory;
public class LogServer
{
private static final int PORT_NUM = 4454;
private static ServerSocket serverSocket;
public static void main(String[] args)
{
serverSocket = createServerSocket();
listenAndPrintLogMessages();
}
private static void listenAndPrintLogMessages()
{
for (;;)
{
Socket socket = null;
try
{
System.out.println(" >> Server waiting for log messages...");
socket = serverSocket.accept();
InputStream is = socket.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
String line = null;
while ((line = br.readLine()) != null) {
System.out.println(line);
}
if (socket != null) {
try
{
socket.close();
}
catch (IOException ignored) {}
}
}
catch (Exception e) {}finally
{
if (socket != null) {
try
{
socket.close();
}
catch (IOException ignored) {}
}
}
}
}
private static ServerSocket createServerSocket()
{
ServerSocketFactory serverSocketFactory = ServerSocketFactory.getDefault();
try
{
serverSocket = serverSocketFactory.createServerSocket(4454);
}
catch (IOException ioEx)
{
System.err.println("Unable to create server");
ioEx.printStackTrace();
System.exit(-1);
}
return serverSocket;
}
}
那么可以禁用或者修改端口配置。
