Spring - Filter

 

[필터 로직]

package com.filter;

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;

public class sessionFilter implements Filter {

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		System.out.println("init");

	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		System.out.println("doFilter");

		// 필터의 처리(doFilter())결과를 다음 처리로 넘긴다. 만약 다음 필터가 있다면 다음 필터로, 없다면 서블릿으로 전달
		chain.doFilter(request, response);
	}

	@Override
	public void destroy() {
		System.out.println("destroy");

	}

}

[필터 설정]

<!-- 스프링 필터 추가--> 
	<filter>
		<filter-name>sessionFilter</filter-name>
		<filter-class>com.filter.sessionFilter</filter-class>
	</filter>
	
	<filter-mapping>
		<filter-name>sessionFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>