servlet3.0以后无需在web.xml中配置servlet


//下面这句话代替了web.xml中对servlet的配置
@WebServlet("/Upload")

public class Upload extends HttpServlet {
	private static final long serialVersionUID = 1L;

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

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		//该段是用servlet输出页面
		response.setContentType("text/html;charset=GBK");
		PrintWriter out = response.getWriter();
		out.println("<HTML>");
		out.println("<HEAD><TITLE>firstse</TITLE></HEAD>");
		out.println("<BODY>");
		out.print("这是servlet");
		out.println("</BODY>");
		out.println("</HTML>");

			}

}

 


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