java 嵌入式 Jetty 为什么要使用 join
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Embedded Jetty why to use join
提问by Loner shushman
An example taken from an Embedded Jetty tutorial suggests the following:
从嵌入式 Jetty 教程中获取的示例建议如下：
public static void main(String[] args) throws Exception
{
Server server = new Server(8080);
server.setHandler(new HelloHandler());
server.start();
server.join();}
Why do I need to add the line server.join()? It works fine without it.
为什么我需要添加该行server.join()？没有它它工作正常。
采纳答案by AlexR
join()is blocking until server is ready. It behaves like Thread.join()and indeed calls join()of Jetty's thread pool. Everything works without this because jetty starts very quickly. However if your application is heavy enough the start might take some time. Call of join()guarantees that after it the server is indeed ready.
join()一直阻塞，直到服务器准备好。它的行为类似于Jetty 线程池的Thread.join()调用join()。没有这个一切都可以工作，因为码头启动得非常快。但是，如果您的应用程序足够重，启动可能需要一些时间。调用join()保证在它之后服务器确实准备好了。
