@RestController
 
@RequestMapping("/customer")
 
public class CustomerController {
 
 
    @GetMapping
 
    public String getMessage(){
 
        return "welcome to filter session";
 
    }
 
}
 
 
@Component
 
@Slf4j
 
public class MessageFilter implements Filter {
 
 
    @Override
 
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
 
        log.info("[MessageFilter] - Inside doFilter method");
 
        log.info("Local Port : " + request.getLocalPort());
 
        log.info("Server Name : " + request.getServerName());
 
 
        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
 
        log.info("Method Name : " + httpServletRequest.getMethod());
 
        log.info("Request URI : " + httpServletRequest.getRequestURI());
 
        log.info("Servlet Path : " + httpServletRequest.getServletPath());
 
        chain.doFilter(request, response);
 
    }
 
}

@Component
 
@Slf4j
 
@Order(2)
 
public class MessageFilter implements Filter {
 
 
    @Override
 
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
 
        log.info("[MessageFilter] - Inside doFilter method");
 
        log.info("Local Port : " + request.getLocalPort());
 
        log.info("Server Name : " + request.getServerName());
 
 
        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
 
        log.info("Method Name : " + httpServletRequest.getMethod());
 
        log.info("Request URI : " + httpServletRequest.getRequestURI());
 
        log.info("Servlet Path : " + httpServletRequest.getServletPath());
 
        chain.doFilter(request, response);
 
    }
 
}
 
 
@Component
 
@Slf4j
 
@Order(1)
 
public class ProductFilter implements Filter {
 
 
    @Override
 
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
 
        log.info("[ProductFilter] - Inside doFilter method");
 
        log.info("Local Port : " + request.getLocalPort());
 
        log.info("Server Name : " + request.getServerName());
 
 
        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
 
        log.info("Method Name : " + httpServletRequest.getMethod());
 
        log.info("Request URI : " + httpServletRequest.getRequestURI());
 
        log.info("Servlet Path : " + httpServletRequest.getServletPath());
 
        chain.doFilter(request, response);
 
    }
 
}

@Component
 
@Slf4j
 
@Order(1) // 確保此過(guò)濾器在MessageFilter之前執(zhí)行
 
public class ProductFilter implements Filter {
 
 
    @Override
 
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
 
        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
 
        String requestURI = httpServletRequest.getRequestURI();
 
 
        if ("/customer".equals(requestURI)) {
 
            chain.doFilter(request, response);
 
            return; // 跳過(guò)過(guò)濾器的其余部分
 
        }
 
 
        log.info("[ProductFilter] - Inside doFilter method");
 
        log.info("Local Port : " + request.getLocalPort());
 
        log.info("Server Name : " + request.getServerName());
 
        log.info("Method Name : " + httpServletRequest.getMethod());
 
        log.info("Request URI : " + requestURI);
 
        log.info("Servlet Path : " + httpServletRequest.getServletPath());
 
 
        chain.doFilter(request, response);
 
    }
 
}

@Configuration
 
public class FilterConfig {
 
 
    @Bean
 
    public FilterRegistrationBean<MessageFilter> loggingFilter(){
 
        FilterRegistrationBean<MessageFilter> registrationBean = new FilterRegistrationBean<>();
 
 
        registrationBean.setFilter(new MessageFilter());
 
        registrationBean.addUrlPatterns("/customer/*"); // 如果需要，指定URL模式
 
 
        return registrationBean;
 
    }
 
}

public class ProductFilter extends OncePerRequestFilter {
 
 
    @Override
 
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
 
        log.info("[ProductFilter] - Inside doFilter method");
 
        log.info("Local Port : " + request.getLocalPort());
 
        log.info("Server Name : " + request.getServerName());
 
 
        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
 
        log.info("Method Name : " + httpServletRequest.getMethod());
 
        log.info("Request URI : " + httpServletRequest.getRequestURI());
 
        log.info("Servlet Path : " + httpServletRequest.getServletPath());
 
        filterChain.doFilter(request, response);
 
    }
 
}

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
 
public class MyFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        // 初始化代碼（可選）
    }
 
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        // 在這里可以對(duì)請(qǐng)求進(jìn)行預(yù)處理操作，例如檢查請(qǐng)求頭、參數(shù)等
 
        // 繼續(xù)執(zhí)行過(guò)濾器鏈中的下一個(gè)過(guò)濾器或目標(biāo)資源
        chain.doFilter(request, response);
 
        // 在這里可以對(duì)響應(yīng)進(jìn)行后處理操作，例如修改響應(yīng)頭、內(nèi)容等
    }
 
    @Override
    public void destroy() {
        // 銷毀代碼（可選）
    }
}

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
@Configuration
public class FilterConfig {
    @Bean
    public FilterRegistrationBean<MyFilter> myFilter() {
        FilterRegistrationBean<MyFilter> registrationBean = new FilterRegistrationBean<>();
        registrationBean.setFilter(new MyFilter());
        registrationBean.addUrlPatterns("/api/*"); // 設(shè)置過(guò)濾器應(yīng)用于哪些URL模式
        registrationBean.setOrder(1); // 設(shè)置過(guò)濾器的順序（數(shù)字越小，優(yōu)先級(jí)越高）
        return registrationBean;
    }
}