我的任务是编写一个小型服务器应用程序。它应该通过控制台启动，然后在后台运行，处理一些网络流量并在本地计算内容，直到它收到关闭信号。我很确定我可以处理所有这些 - 除了非常基本的应用程序架构。我非常不确定如何让我的主循环等待应用程序完成。所以这是我当前的代码，清理并省略了不必要的部分。
public class TestServer {
public static Logger logger;
private static Boolean abortStartup = false;
private static ServerModule server;
public static void main(String[] args) {
System.out.println("Starting Server...");
initializeServer(); //this function reads config file, and initializes all variables and stuff. If anything goes wrong, abortStartup is set to true
if (!abortStartup) {
runMainLoop();
}
if (!abortStartup) {
cleanup(); //clean up all initialized variables and objects
}
System.out.println("Goodbye.");
}
private static void runMainLoop() {
//This is the main loop. Run this until application terminates.
logger.log(null, "Starting main loop...", Logger.LOGLEVEL_NOTE);
server.run();
while (server.isAlive()) {
//wait until server dies.
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
logger.log(null, "Interrupted during wait for main thread.", Logger.LOGLEVEL_ERROR);
}
}
logger.log(null, "Done.", Logger.LOGLEVEL_NOTE);
}
ServerModule 看起来像这样：
public class ServerModule{
public Boolean shutdown = false;
private Boolean stayAlive = true;
public ServerModule(){
//setup everything
}
public void run() {
//initalize timers, instantiate objects etc.. add listeners and everything. At some point, a network message will set stayAlive to false;
}
public Boolean isAlive() {
return stayAlive;
}
现在是实际问题：有没有更优雅或更有效的方法来解决这个问题？我特别在谈论这部分：
while (server.isAlive()) {
//wait until server dies.
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
logger.log(null, "Interrupted during wait for main thread.", Logger.LOGLEVEL_ERROR);
}
thread.sleep 在这里好吗？我什至可以或应该省略它吗？我想在我的代码的这一点上等待，这样我就可以在执行停止后进行清理。
您可以使您的服务器具有可运行性，将其打包到一个线程中并加入！
例子
public static void main(String[] args) throws InterruptedException {
Thread t = new Thread(() -> {
try {
Thread.sleep(5000L);
} catch (InterruptedException e) {
e.printStackTrace();
}
});
System.out.println("Starting Server!");
t.start();
t.join();
System.out.println("Server is done!");
}
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