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springboot中添加拦截器

news 2026/5/12 3:54:15

记录下在项目中添加拦截器的使用demo

1、添加拦截类

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;@Slf4j
public class RequestTimeInterceptor implements HandlerInterceptor {@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {// 记录请求开始时间long startTime = System.currentTimeMillis();request.setAttribute("startTime", startTime);// 打印请求基本信息log.info("===== 请求开始 =====");log.info("请求URL: {}", request.getRequestURL());log.info("请求方法: {}", request.getMethod());log.info("客户端IP: {}", request.getRemoteAddr());// 返回true表示放行，false直接拦截（比如登录校验失败可返回false）return true;}@Overridepublic void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {log.info("===== Controller处理完成 =====");}@Overridepublic void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {long startTime = (long) request.getAttribute("startTime");long endTime = System.currentTimeMillis();long costTime = endTime - startTime;// 打印结果log.info("响应状态码: {}", response.getStatus());log.info("接口耗时: {}ms", costTime);if (ex != null) {log.error("请求异常: {}", ex.getMessage(), ex);}log.info("===== 请求结束 =====\n");}
}

2、添加拦截器配置

@Configuration
public class WebMvcInterceptorConfig implements WebMvcConfigurer {@Overridepublic void addInterceptors(InterceptorRegistry registry) {registry.addInterceptor(new RequestTimeInterceptor()) // 注册自定义拦截器.addPathPatterns("/**") // 拦截所有路径（/** 匹配所有层级，/* 只匹配一级）.excludePathPatterns( // 排除不需要拦截的路径"/login", // 登录接口"/static/**", // 静态资源"/error" // 错误页面
                );}
}