01.web.xml

web.xml 분석

• context-param

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee https://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">


	<!-- The definition of the Root Spring Container shared by all Servlets 
		and Filters -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/spring/root-context.xml</param-value>
	</context-param>

context-param은 아래의 contextLoaderListener의 파라미터이다

contextLoaderListener가 로딩 할 자바 빈들이 위의 root-context에 있다

root-context를 밑으로 dispatcher 서블릿들이 위치를 한다

root-context는 공통적인 분모들(스프링 시큐리티)는 root에 로드 해준다

dispathcher sevlet가 여러개일 떄 root-context에 로딩하기도 한다

---

 

• ContextLoaderListener

	<!-- Creates the Spring Co&nbsp;ainer shared by all Servlets and Filters -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>

contextLoaderListener가 root-context를 로딩하게 된다

---

 

• servlet

	<!-- Processes application requests -->
	<servlet>
		<servlet-name>appServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet
		</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/spring/appServlet/servlet-context.xml
			</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>appServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

root요청은 appServlet가 받는다

app 서블릿은 dispathcher 서블릿이 받으며 dispatcher서블릿은 파라미터를 servlet-context를 가지고 로딩된다

 

• errorpage

	<!-- 에러페이지 -->
	<error-page>
		<error-code>404</error-code>
		<location>/WEB-INF/views/404Error.jsp</location>
	</error-page>

 

• 한글 깨짐 필터

	<!-- Character Encoding 한글깨짐 방지 필터 -->
	<filter>
		<filter-name>encodingFilter</filter-name>
		<filter-class>
			org.springframework.web.filter.CharacterEncodingFilter
		</filter-class>

		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>

		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>