springboot整合拦截器

1.首先创建拦截器类：

java 复制代码

package com.example.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

@Slf4j
@Component
public class RequestInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String requestURI = request.getRequestURI();
        String method = request.getMethod();
        log.info("请求开始，URI: {}, Method: {}", requestURI, method);
        
        // 获取请求头中的token（如果有）
        String token = request.getHeader("Authorization");
        if (token != null) {
            log.info("Token: {}", token);
        }
        
        // 返回true表示继续执行，返回false表示中断请求
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("请求处理完成");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        log.info("请求完全结束");
        if (ex != null) {
            log.error("请求过程中发生错误：", ex);
        }
    }
}

创建拦截器配置类：

java 复制代码

package com.example.config;

import com.example.interceptor.RequestInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    private final RequestInterceptor requestInterceptor;

    public WebMvcConfig(RequestInterceptor requestInterceptor) {
        this.requestInterceptor = requestInterceptor;
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(requestInterceptor)
                .addPathPatterns("/**")         // 拦截所有请求
                .excludePathPatterns(           // 排除不需要拦截的路径
                    "/swagger-ui/**",           // swagger
                    "/v3/api-docs/**",          // swagger
                    "/error",                   // 错误页面
                    "/static/**",               // 静态资源
                    "/*.ico"                    // 图标文件
                );
    }
}

3.创建一个测试控制器：

java 复制代码

package com.example.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@Slf4j
@RestController
@RequestMapping("/api")
public class TestController {

    @GetMapping("/test")
    public String test() {
        log.info("测试接口被调用");
        return "Hello from test endpoint!";
    }
}