(동영상)자바서블릿 필터(Java Servlet Filter)란?_개요 및 Filter HelloWorld 실습(XML, 어노테이션)

http://ojc.asia/bbs/board.php?bo_table=LecServletJSP&wr_id=284

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(동영상)자바서블릿 필터(Java Servlet Filter)란?_개요 및 Filter HelloWorld 

 

 

package filter;

……

public class FilterTest implements Filter {

    private FilterConfig fc;

    public void init(FilterConfig config) throws ServletException {

        this.fc = config;

    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {

        HttpServletRequest httpReq = (HttpServletRequest) req;

        String ip = httpReq.getRemoteHost();

        System.out.println("IP Address : " + ip);

        chain.doFilter(req, resp);

    }

    public void destroy() {        // TODO Auto-generated method stub    }

}

 

 

 

 

<filter>

 <filter-name>myfilter</filter-name>

 <filter-class>filter.FilterTest</filter-class>

</filter>

<filter-mapping>

 <filter-name>myfilter</filter-name>

 <url-pattern>/*</url-pattern>

</filter-mapping>

 

 

 

@WebFilter(filterName = “myFilter",

                 urlPatterns = {"/*"},

                  initParams = {

                    @WebInitParam(name = "addr", value = "seoul")})

public class FilterTest  implements Filter {

  ……

  ……

}

 

 

 

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