这是我服务器的代码
package local.xx.mavenws;
import java.io.IOException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import javax.enterprise.context.ApplicationScoped;
import org.joda.time.DateTime;
@ApplicationScoped
@ServerEndpoint("/")
public class Server {
private final ArrayList<Session> sessions;
public Server() {
this.sessions = new ArrayList<>();
}
@OnOpen
public void onOpen(Session session) {
this.sessions.add(session);
this.echo("Client connected!");
}
@OnClose
public void onClose(Session session) {
this.sessions.remove(session);
this.echo("Client disconnected!");
}
@OnError
public void onError(Throwable error) {
this.echo("Error occured!");
this.echo(error.getLocalizedMessage());
}
@OnMessage
public void onMessage(String message, Session session) {
try {
message = "[" + this.currentDate() + "] " + message;
this.echo(message);
for( Session sess : this.sessions ) {
sess.getBasicRemote().sendText(message);
}
} catch (IOException ex) {
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void echo(String info) {
System.out.println(info);
}
private String currentDate() {
String dateArray[] = (new DateTime()).toString().split("T");
String date = dateArray[0] + " " + (dateArray[1].split("\\.")[0]);
return date;
}
}
我希望它将收到的消息发送给所有连接的用户。问题是,它会单独处理每个连接,就像每个连接都拥有自己的服务器实例一样。当我在两个浏览器窗口中连接时,消息会单独显示。有没有人对此有任何想法?
答案 0 :(得分:1)
终于搞定了!解决方案是sessions
变量必须是静态的,我必须始终在Server
范围内调用它,而不是this
。这意味着,尽管为每个连接的用户创建了Server
的新实例,但该变量对每个人都是相互的。