springBoot--拦截器配置

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最新推荐文章于 2025-01-21 00:39:34 发布

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分类专栏： springBoot

本文链接：https://blog.youkuaiyun.com/qq_42896477/article/details/88778822

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本文介绍了一个Spring MVC中的登录拦截器实现，该拦截器用于在请求处理前后执行特定操作，并记录相关信息。通过配置类将拦截器应用到所有路径。

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1、编写拦截器实现HandleInterceptor接口

   package com.sun.interceptor;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    //打印日志信息
    public static Logger logger = (Logger) LoggerFactory.getLogger("sysLogeer");

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//        System.out.println("前置");
        logger.info("前置");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
//        System.out.println("后置");
        logger.info("后置");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
//        System.out.println("最终");
        logger.info("最终");
    }
}

2、编写java配置类

package com.sun.config;

import com.sun.interceptor.LoginInterceptor;
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 SysConfigInterceptor implements WebMvcConfigurer {

    public LoginInterceptor loginInterceptor(){
        return new LoginInterceptor();
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //通过registry来注册拦截器，通过addPathPatterns来添加拦截路径
        registry.addInterceptor(this.loginInterceptor()).addPathPatterns("/**");
    }
}