java web获取当前日期_Java web显示当前时间?

HelloSevlet.java中内容.....................@WebServlet("/hello")publicclassHelloServletextendsHttpServlet{@OverrideprotectedvoiddoGet(HttpServletRequestreq,HttpServletRes...

HelloSevlet.java中内容

...........

..........

@WebServlet("/hello")

public class HelloServlet extends HttpServlet {

@Override

protected void doGet(HttpServletRequest req, HttpServletResponse resp)

throws ServletException, IOException {

DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String currentTime = dateFormat.format(new Date());

req.setAttribute("currentTime", currentTime);

req.getRequestDispatcher("/WEB-INF/jsp/hello.jsp").forward(req,resp);

}

}

hello.jsp内容

Hello

Hello!

当前时间: ${currentTime}

得到的页面中只显示:

Hello!

当前时间:

这是为什么啊?是什么原因呢?本人小白,求高人指点

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