[JSP] web.xml 구성

Web.xml 구성

web.xml에 설정된 초기화 파라미터 읽기

String filename = getInitParameter("FILE_NAME");

ServletConfig config = getServletConfig();
String filename = config.getInitParameter("FILE_NAME");

 

<web-app xmlns="http://java.sun.com/xml/ns/javaee" version="2.5">
    <servlet>
        <servlet-name>fibonacci-servlet</servlet-name>
        <servlet-class>FibonacciServlet</servlet-class>
        <load-on-startup>0</load-on-startup> --
    </servlet>
    <servlet-mapping>
        <servlet-name>fibonacci-servlet</servlet-name>
        <url-pattern>/fibonacci</url-pattern>
    </servlet-mapping>
    <servlet>
        <servlet-name>greeting-servlet</servlet-name>
        <servlet-class>GreetingServlet</servlet-class>
        <init-param>     --서블릿 초기화 파리미터
            <param-name>FILE_NAME</param-name>
            <param-value>C:\\data\\greeting_log.txt</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>greeting-servlet</servlet-name>
        <url-pattern>/greeting</url-pattern>
    </servlet-mapping>   
    <servlet>
        <servlet-name>dbname-jsp</servlet-name>
        <jsp-file>/DBName.jsp</jsp-file> --JSP파일 연결할 때 파일 명 앞에 '/'은 들어가야됨.
        <init-param>
            <param-name>DB_NAME</param-name>
            <param-value>malldb</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dbname-jsp</servlet-name>
        <url-pattern>/dbname</url-pattern>
    </servlet-mapping>
    <servlet>
        <servlet-name>server-info-servlet</servlet-name>
        <servlet-class>ServerInfoServlet</servlet-class>
        <load-on-startup>0</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>server-info-servlet</servlet-name>
        <url-pattern>/server-info</url-pattern>
    </servlet-mapping>
    <context-param>  --웹전체에서 사용할 때
        <param-name>DB_NAME</param-name> --application.getInitParameter("DB_NAME");
        <param-value>bankdb</param-value>
    </context-param>
</web-app>