首先,这是我的可编辑projects。
IDE = Netbeans
我在一个项目中有serversocket,在第二个项目中有客户端套接字。
ServerSocket Project的代码片段:
showStatus(String status); is method which appends text to statusWindow (JTextArea);
Socket gameClientSocket,ObjectOutputStream gameoos and ObjectInputStream gameois is declared outside code fragment
代码:
private void configureSockets() {
try{
properties.showStatus("GAME_THREAD-waiting someone to accept");
gameClientSocket = gameSocket.accept();
properties.showStatus("GAME_THREAD-Accepted");
properties.showStatus("GAME_THREAD-getting outputsstreams");
gameoos= new ObjectOutputStream(gameClientSocket.getOutputStream());
gameoos.flush();
properties.setGameStream(gameoos);
properties.showStatus("GAME_THREAD-getting inputstreams");
gameois=new ObjectInputStream(gameClientSocket.getInputStream());
properties.showStatus("GAME_THREAD-testing connections ,\nwe must receive int 1 ");
properties.showStatus("GAME_THREAD- received "+gameois.readInt());
properties.showStatus("GAME_THREAD-tested");
}catch(IOException ex){
properties.showStatus(ex.getMessage());}
}
初始化:
gameSocket = new ServerSocket(GAME_PORT);
ClientSocket Project的代码片段:
System.out.println("GAME_THREAD-configuring gameSocket ");
properties.showStatus("GAME_THREAD- configuring gameSocket ");
if(gameSocket==null ){
gameSocket = new Socket("localhost",GAME_PORT);
System.out.println("GAME_THREAD- getting Streams");
properties.showStatus("GAME_THREAD- getting Streams ");
gameoos = new ObjectOutputStream(gameSocket.getOutputStream());
gameoos.flush();
gameois = new ObjectInputStream(gameSocket.getInputStream());
properties.showStatus("GAME_THREAD-testing sending ");
gameoos.writeInt(1);
properties.showStatus("GAME_THREAD-seccessfully sent ");
properties.showStatus("GAME_THREAD- setting Streams to gameWindow ");
System.out.println("GAME_THREAD-setting Streams to gameWindow");
properties.setGameStream(gameoos);
}
最后这里是状态Windows:
GAME_THREAD - blocking game Window
GAME_THREAD- configuring gameSocket
GAME_THREAD- getting Streams
GAME_THREAD-testing sending
GAME_THREAD-seccessfully sent
GAME_THREAD- setting Streams to gameWindow
服务器项目状态窗口:
GAME_THREAD-Accepted
GAME_THREAD-getting outputsstreams
GAME_THREAD-getting inputstreams
GAME_THREAD-testing connections ,
we must receive int 1
问题:
我无法读取ObjectInputStream中的数字(或者它没有写入),从不抛出异常,进程冻结,不做任何事情。我不知道我做错了什么。我搜索了整个网络但找不到任何可用的答案。你能帮帮我吗?
更新
gameoos.writeint(1);
gameoos.flush();
解决了问题
答案 0 :(得分:0)
发生冻结是因为你试图在我相信的主线程上进行网络连接,这是一个糟糕的计划 - 你需要将它们放在第二个线程上。您可以使用ExecutorService中的线程池http://www.journaldev.com/1069/java-thread-pool-example-using-executors-and-threadpoolexecutor,也可以运行自己的线程。
线程需要运行Runnable接口的实现。
public class MyThread implements Runnable
{
@Override
public void run()
{
//do stuff
}
}
public static void main(String[] args)
{
Thread thread = new Thread(new MyThread());
thread.start();
//...do other stuff and not end the app here
}
但我不认为你可以像这样发送对象,你需要将它们转换为byte []并重新组合它们:send a serializable object over socket
我个人的建议是完全抛弃ObjectStreams,并使用一个允许像往常一样发送对象的框架,比如KryoNet框架: https://github.com/EsotericSoftware/kryonet
使用它的示例代码是:
Server server = new Server();
Kryo kryo = server.getKryo();
kryo.register(float[].class);
server.start();
server.bind(2300, 2301);
server.addListener(new Listener() {
public void received(Connection connection, Object object)
{
if(object instanceof float[])
{
float[] array = (float[])object;
for(int i = 0; i < array.length; i++)
{
System.out.println("" + array[i]);
}
}
}});
Client client = new Client();
Kryo kryo = client.getKryo();
kryo.register(float[].class);
client.addListener(new Listener() {
public void connected(Connection connection)
{
connection.sendTCP(new float[] {5, 6, 7, 8});
}
};
client.connect(5000, "127.0.0.1”, 2300, 2301);
KryoNet已经在后台线程上运行网络,所以你根本不需要搞乱它。