详解如何使用IntelliJ IDEA新建一个Servlet项目

@WebServlet(name = \"testDemo\")
public class testDemo extends HttpServlet {
  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

  }

  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.setContentType(\"text/html\");

    PrintWriter out = response.getWriter();
    out.println(\"<h1>hello world</h1>\");
  }
}

<?  version=\"1.0\" encoding=\"UTF-8\"?>
<web-app  ns=\"http:// ns.jcp.org/ /ns/javaee\"
      ns:xsi=\"http://www.w3.org/2001/ Schema-instance\"
     xsi:schemaLocation=\"http:// ns.jcp.org/ /ns/javaee http:// ns.jcp.org/ /ns/javaee/web-app_4_0.xsd\"
     version=\"4.0\">
  <servlet>
    <servlet-name>Test</servlet-name>
    <servlet-class>testDemo</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>Test</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>