springboot配置拦截器

首先创建拦截器：

 代码：

package com.qf.springnew.interceptor;

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

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

/**
 *  Created by XuYinShan on 2020/12/22
 */
@Component
public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("MyInterceptor preHandle...");
        return true;
    }
}

注意，演示的preHandle是return true，放行了。

配置拦截器：

 代码：

package com.qf.springnew.config;

import com.qf.springnew.interceptor.MyInterceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 *  Created by XuYinShan on 2020/12/22
 */
@Configuration
public class MyWebMVCConfig implements WebMvcConfigurer {
    @Autowired
    private MyInterceptor myInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 添加我们的拦截器
        registry.addInterceptor(myInterceptor).addPathPatterns("/**");
    }
}

结束。