Java中使用Filter过滤器的方法

package com.lxc.springboot.filter;
 
 

 
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
 
import javax.servlet.*;
import javax.servlet.Http.httpservletRequest;
import java.io.IOException;
 
@Component
public class FilterLog implements Filter {
    // 使用指定类 - 初始化日志对象
    private static final Logger LOG = LoggerFactory.getLogger(FilterLog.class);
 
    // 初始化方法
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        Filter.super.init(filterConfig);
    }
 
    
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        LOG.info("【全局过滤器】");
        LOG.info("--------- FilterLog日志开始 --------- ");
        LOG.info("- 请求地址: {}, 方法: {}", request.getRequestURL().toString(), request.getMethod());
        LOG.info("- 远程地址: {}, 域名: {}, 端口: {}", request.getRemoteAddr(), request.getRemoteHost(), request.getRemotePort());
        long startTime = System.currentTimeMillis(); // 13位 时间戳（毫秒）
        // 继续往后执行，是否有别的过滤器，没有 -> 进入应用，执行逻辑
        filterChain.doFilter(servletRequest, servletResponse);
        LOG.info(" --------- FilterLog 结束，耗时: {} ms --------- ", System.currentTimeMillis() - startTime);
    }
 
    // WEB服务器关闭时，Filter会销毁
    @Override
    public void destroy() {
        Filter.super.destroy();
    }
}