小编Mik*_*ike的帖子

我有示例项目StockWatcher使用requestbuilder与servlet进行通信(本例).我想让servlet异步.我在doGet方法中添加了以下行:

final AsyncContext ac = request.startAsync();  
ac.setTimeout(1 * 60 * 1000);  
ac.addListener(new AsyncListener() {  

@Override  
public void onError(AsyncEvent arg0) throws IOException {  
            System.out.println("onError");       
}  

public void onComplete(AsyncEvent event) throws IOException {  
            System.out.println("onComplete");   
            queue.remove(ac);  
}  

public void onTimeout(AsyncEvent event) throws IOException {  
            System.out.println("onTimeout");   
            queue.remove(ac);  
}  

@Override  
public void onStartAsync(AsyncEvent arg0) throws IOException {  
            System.out.println("onStartAsync");   

}  
});  
queue.add(ac); 

添加了异步注释:@WebServlet(asyncSupported=true) 并使用以下命令更改了doGet方法的其余部分:

PrintWriter out = ac.getResponse().getWriter();
out.println("Something");
out.flush();

现在没有任何回报.我错了什么？必须在客户端改变一些东西？Glassfish 3没有显示任何错误.