springboot配置 java servlet的Filter过滤器

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.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
@WebFilter(filterName="myFilter",urlPatterns="/*")
//WebFilter注解会让springboot知道这是个过滤器，会跟随boot启动urlPatterns就是要过滤的路径，filterName过滤器名字
public class ActionFilter implements Filter{
private HttpServletRequest httpRequest;
private HttpServletResponse httpResponse;
protected final Logger logger = Logger.getLogger(this.getClass());
@Override
public void init(FilterConfig filterConfig) throws ServletException {
// TODO Auto-generated method stub

System.out.println("过滤器初始化");
}

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
System.out.println("执行过滤操作");
httpRequest=(HttpServletRequest)request;
httpResponse=(HttpServletResponse)response;
logger.info("url "+httpRequest.getRequestURI());
// TODO Auto-generated method stub
chain.doFilter(request, response);

}

@Override
public void destroy() {
System.out.println("过滤器销毁");
// TODO Auto-generated method stub

}

}