配置登录拦截器

package com.lfsun.springbootsession.interceptor;

import com.lfsun.springbootsession.constants.Consts;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

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

/**
 * <p>
 * 校验Session的拦截器
 * </p>
 */
@Component
public class SessionInterceptor extends HandlerInterceptorAdapter {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession();
        if (session.getAttribute(Consts.SESSION_KEY) != null) {
            return true;
        }
        // 跳转到登录页
        String url = "/page/login?redirect=true";
        response.sendRedirect(request.getContextPath() + url);
        return false;
    }
}

mvc 配置类

package com.lfsun.springbootsession.config;

import com.lfsun.springbootsession.interceptor.SessionInterceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * <p>
 * WebMvc 配置类
 * </p>
 */
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
    @Autowired
    private SessionInterceptor sessionInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        InterceptorRegistration sessionInterceptorRegistry = registry.addInterceptor(sessionInterceptor);
        // 排除不需要拦截的路径
        sessionInterceptorRegistry.excludePathPatterns("/page/login");
        sessionInterceptorRegistry.excludePathPatterns("/page/doLogin");
        sessionInterceptorRegistry.excludePathPatterns("/error");

        // 需要拦截的路径
        sessionInterceptorRegistry.addPathPatterns("/**");
    }
}

完整代码案例地址

Spring Boot 集成 session