Springboot-登录拦截

登录拦截

拦截器

package com.star.blog.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;

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


public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler) throws Exception {
         //如果获取的Session中的user为空,则重定向到/admin登录页面                    
        if (request.getSession().getAttribute("user") == null) {
            response.sendRedirect("/admin");
            return false;
        }
        return true;
    }
}

配置拦截/放行

package com.star.blog.interceptor;

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 WebConfig  implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry){
        registry.addInterceptor(new LoginInterceptor())
                .addPathPatterns("/admin/**")
                .excludePathPatterns("/admin")
                .excludePathPatterns("/admin/login");
    }
}