[펌]tomcat-cach-control

출처 : http://stackoverflow.com/questions/2876250/tomcat-cache-control

       http://blog.naver.com/mankeys/220219120741

Tomcat: Cache-Control

Jetty has a CacheControl parameter (can be specified webdefault.xml) that determines the caching behavior of clients (by affecting hea...

stackoverflow.com

css, image 등을 바꾸었는데 바로 반영이 안되서 안타까울때 다음과 같이 캐쉬 컨트롤을 하자 .

1. CacheControlFilter class

 

import java.io.IOException;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletResponse;

public class CacheControlFilter implements Filter {

    public void doFilter(ServletRequest request, ServletResponse response,

                         FilterChain chain) throws IOException, ServletException {

        HttpServletResponse resp = (HttpServletResponse) response;

        resp.setHeader("Expires", "Tue, 03 Jul 2001 06:00:00 GMT");

//        resp.setDateHeader("Last-Modified", new Date());

        resp.setHeader("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0, post-check=0, pre-check=0");

        resp.setHeader("Pragma", "no-cache");

        chain.doFilter(request, response);

    }

@Override

public void destroy() {

// TODO Auto-generated method stub

}

@Override

public void init(FilterConfig arg0) throws ServletException {

// TODO Auto-generated method stub

}

}

 2. web.xml

 

  <filter>

    <filter-name>SetCacheControl</filter-name>

    <filter-class>com.lm.util.CacheControlFilter</filter-class>

  </filter>                       

  <filter-mapping>

    <filter-name>SetCacheControl</filter-name>

  <url-pattern>/*</url-pattern>

  </filter-mapping>

 

 그러면 다음과 같이 설정이 바뀌고 브라우저 캐쉬가 없어 진다.