[英]Error message not going away in Netbeans, why? “java.net.BindException: Address already in use: bind”
It seems like a duplicate question of how to kill a process already running on that port, but it is a different question. 似乎是一个重复的问题,即如何终止已经在该端口上运行的进程,但这是一个不同的问题。 When I killed the process and restart it, it still gives me that error message, seems like Netbeans has a problem, and the error message got stuck and keeps appearing even when the port is not in use.
当我终止该进程并重新启动它时,它仍然给我该错误消息,好像Netbeans有问题,并且即使端口未使用,该错误消息也被卡住并不断出现。
I've used the tool at : http://www.yougetsignal.com/tools/open-ports/ to check the port : 6600 我在以下网址使用过该工具: http : //www.yougetsignal.com/tools/open-ports/检查端口:6600
Here is what it says : 它说的是:
My code looks like the following : 我的代码如下所示:
import java.io.*;
import java.util.*;
import com.sun.net.httpserver.*;
import java.net.InetSocketAddress;
import java.util.concurrent.Executors;
import Utility.*;
public class Http_Server
{
static int Port=6600,Thread_Count=50,Resume_Count=0; // 8080
InetSocketAddress addr;
HttpServer server;
static String App_Id="Resume_App";
static Resume_Loader Resume_loader;
static Get_Time Timer=new Get_Time();
static Vector<String> Current_Keywords_Vector=new Vector();
static boolean Debug_B=true;
public Http_Server(int Port)
{
if (Port>-1) this.Port=Port;
Srart_Server();
}
void Srart_Server()
{
try
{
Resume_loader=new Resume_Loader();
addr=new InetSocketAddress(Port);
server=HttpServer.create(addr,0); // Line : 34
server.createContext("/"+App_Id,new MyHandler(server));
server.setExecutor(Executors.newCachedThreadPool());
server.start();
Out("Server is listening on port : "+Port);
}
catch (Exception e)
{
Resume_App.Save_To_Log(e.toString()+"\n"+Tool_Lib_Simple.Get_Stack_Trace(e));
e.printStackTrace();
Out(e.toString());
}
}
private static void out(String message) { System.out.print(message); }
private static void Out(String message) { System.out.println(message); }
public static void main(String[] args) { Http_Server Demo=new Http_Server(-1); }
}
It was running fine yesterday, but this morning I changed : 昨天运行良好,但是今天早上我改变了:
InetSocketAddress addr; to static InetSocketAddress addr;
HttpServer server; to static HttpServer server;
When I ran it, I got the following error message : 当我运行它时,出现以下错误消息:
Server is listening on port : 6600
java.net.BindException: Address already in use: bind
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:437)
at sun.nio.ch.Net.bind(Net.java:429)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at sun.net.httpserver.ServerImpl.<init>(ServerImpl.java:100)
at sun.net.httpserver.HttpServerImpl.<init>(HttpServerImpl.java:50)
at sun.net.httpserver.DefaultHttpServerProvider.createHttpServer(DefaultHttpServerProvider.java:35)
at com.sun.net.httpserver.HttpServer.create(HttpServer.java:130)
at Http_Server.Srart_Server(Http_Server.java:34)
at Http_Server.<init>(Http_Server.java:24)
at Http_Server.main(Http_Server.java:51)
Then I realize if they are static, they might keep them selves in memory and occupy the port, so I changed them back to non-static like the above code. 然后我意识到如果它们是静态的,它们可能会将它们保留在内存中并占用端口,因此我像上面的代码一样将它们改回了非静态的。 But now when I run it, the error message keeps appearing, and in Netbeans there is a "notification" saying something like : "package-info.class is in wrong place, delete it or put it in the right sub directory ..." don't remember the exact wording.
但是现在当我运行它时,该错误消息不断出现,并且在Netbeans中有一个“通知”,内容如下:“ package-info.class放在错误的位置,请将其删除或放在正确的子目录中... “不记得确切的用词。 But when I open the url, the web page works fine as if there is no error message, and when I stop the server the page won't appear as it supposed to be.
但是,当我打开该URL时,该网页可以正常工作,好像没有任何错误消息,并且当我停止服务器时,该页面也不会像预期的那样显示。
So it seems like a Netbeans 8.0.2 malfunctioning, but I don't know how to make the error message not appear, or as it suggested how to delete "package-info.class" or put it into the correct sub dir, I can't even find where it is, how to fix it ? 因此,这似乎是Netbeans 8.0.2发生故障,但是我不知道如何使错误消息不出现,或者它提示如何删除“ package-info.class”或将其放入正确的子目录中,我甚至找不到它在哪里,如何解决它?
Regarding : 关于:
there is a "notification" saying something like : "package-info.class is in wrong place, delete it or put it in the right sub directory ..." don't remember the exact wording
有一个“通知”,内容类似于:“ package-info.class放置在错误的位置,将其删除或放在正确的子目录中……”,请记住确切的措辞
Please make it happen again and copy and paste or screenshot the exact wording into your question. 请再次进行,然后将确切的措词复制并粘贴或截图到您的问题中。
I think it would be much better to explicitly call shutdown() on your ExecutiveService and stop(1) on your HttpServer rather than hoping garbage collection will do it. 我认为最好在ExecutiveService上显式调用shutdown()并在HttpServer上显式调用stop(1),而不是希望垃圾回收可以做到。 And it would allow you to control print some messages confirming it.
而且它可以让您控制打印一些确认消息。
eg. 例如。
InetSocketAddress addr = new InetSocketAddress(6600);
ExecutorService es = Executors.newCachedThreadPool();
HttpServer server = HttpServer.create(addr, 0);;
server.createContext("/foo", new HttpHandler() {
@Override
public void handle(HttpExchange he) throws IOException {
String response = "My Response";
he.sendResponseHeaders(200, response.length());
OutputStream os = he.getResponseBody();
os.write(response.getBytes());
os.close();
}
});
server.setExecutor(es);
server.start();
System.out.println("Press enter to stop server.");
// block waiting for user to press enter.
System.in.read();
System.out.println("Shutting down");
server.stop(1);
es.shutdownNow();
System.out.println("should be shutdown now.");
Also at the bottom of netbeans there is a status line. 在netbeans的底部也有一个状态行。
If you see this you need to click the little x to stop whatever process you launched but perhaps forgot about. 如果看到此消息,则需要单击小x停止您启动但可能已忘记的任何过程。
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