[Servlet & JSP] Execution, Mapping, Annotation

Tomcat, Jeus, WepSphere

WAS (Wep Application Server)

 

Servlet

서버 어플리케이션의 조각들

 

환경변수 설정

JAVA_HOME = jdk 설치 위치

 

TOMCAT의 WEB-INF의 파일에는 직접 접근이 불가

 -> 따라서 사용자는 Mapping & Annotation 되어 있는 /hello를 통해서 Nana.class에 접근

 

// Mapping
<servlet>
   <servlet-name>na</servlet-name>
   <servlet-class>Nana</servlet-class>
 </servlet>
 
 <servlet-mapping>
   <servlet-name>na</servlet-name>
   <url-pattern>/hello</url-pattern>
 </servlet-mapping>
 
 
// Annotation
@WebServlet("/hello")
public class Nana extends HttpServlet{
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        
        PrintWriter out = resp.getWriter();
        out.println("Hello~~~~~~~~~");
    }
}