~~~ package com.kimgao.bootlauch.config; import lombok.extern.slf4j.Slf4j; import javax.servlet.*; import javax.servlet.annotation.WebFilter; import java.io.IOException; //注冊器名稱為customFilter,攔截的url為所有 @WebFilter(filterName="customFilter",urlPatterns={"/*"}) @Slf4j public class CustomFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { log.info("filter 初始化"); } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { log.info("customFilter 請求處理之前"); //對request、response進行一些預處理 // 比如設置請求編碼 // request.setCharacterEncoding("UTF-8"); // response.setCharacterEncoding("UTF-8"); //鏈路 直接傳給下一個過濾器 chain.doFilter(request, response); log.info("customFilter 請求處理之后"); } @Override public void destroy() { log.info("filter 銷毀"); } } ~~~