[spring] DispatcherServlet 의 역할

HTTP 프로토컬로 들어온 요청을 받아서 컨트롤 해주는 프론트쪽 컨트롤러 입니다.

 

WAS의 서플릿컨테이너가 요청 받을 때 제일 먼저 처리를 해주며 URL을 핸들러 매핑에 넘겨 호출한 메소드를

 

실행 시키게 됩니다. 그리고 처리후에 처리결과에 맞게 viewResolver에 전달하여 처리결과를

 

view 이름에 맞게 반환하도록 합니다.

 

dispatcher-servlet.xml 설정하기

< ?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
                           http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd 
                           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd ">
     
    <mvc:annotation-driven />
 
    <context:component-scan base-package="com.test.*">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>
     
    <bean id="objectMapper" class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean" />
    <bean class="org.springframework.web.servlet.view.UrlBasedViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
     
</beans>

 

web.xml

<web-app version="3.0"
        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 http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <display-name>Archetype Created Web Application</display-name>
 
  <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>
  </filter>
   
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/</url-pattern>
  </filter-mapping>
   
  <servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/config/dispatcher-servlet.xml</param-value>
    </init-param>
  </servlet>
   
  <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
 
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>WEB-INF/config/spring/context-*.xml</param-value>
  </context-param>
 
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
 
  <session-config>
    <session-timeout>-1</session-timeout>
  </session-config>
 
</web-app>