[java]ServletConfig 서블릿 클래스간의 변수 공유 방법

- 하나의 서블릿 클래스에서 같은 설정 정보를 공유하기 위한 클래스


[설정 방법]
위치 : web.xml

예제 :
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">

.....
<servlet>
    <servlet-name>Tester</servlet-name>
    <servlet-class>com.example.Tester</servlet-class>
    <init-param>
        <param-name>AdminEmail</param-name>
        <param-value>admin@gmail.com</param-value>
    </init-param>
</servlet>

<servlet-mapping>
    <servlet-name>Tester</servlet-name>
    <url-pattern>/Tester.do</url-pattern>
</servlet-mapping>

......

</web-app>



[사용방법]

String adminEmail = getServletConfig().getInitParameter("AdminEmail");

{OR}

ServletContext context = getServletConfig();
String adminemail = context.getInitParameter("AdminEmail");