Servlet的一些细节

//线程安全（网页）
public class ServletDemo4 extends HttpServlet implements SingleThreadModel{

int i = 0;

//子类覆盖父类的方法，不能抛出比父类更多的异常
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

i++;

try{
Thread.sleep(1000*4);
}
catch(Exception e){
e.printStackTrace();
}

response.getOutputStream().write((i+"").getBytes());

//		synchronized (this) {
//			i++;
//
//			try{
//				Thread.sleep(1000*4);
//			}
//			catch(Exception e){
//				e.printStackTrace();
//			}
//
//			response.getOutputStream().write((i+"").getBytes());
//		}

}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}

}