✅P265_商城业务-订单服务-订单登录拦截

编写拦截器

用户结算、查看订单必须是已经登录状态，通过编写一个拦截器进行判断，用户登录放行，用户未登录跳转到登录页面

cfmall-order/src/main/java/com/gyz/cfmall/order/interceptor/LoginUserInterceptor.java

package com.gyz.cfmall.order.interceptor;

import com.gyz.common.constant.AuthServerConstant;
import com.gyz.common.vo.MemberResponseVo;
import org.springframework.web.servlet.HandlerInterceptor;

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

/**
 * @author gong_yz
 * @Description 订单结算拦截器
 */

public class LoginUserInterceptor implements HandlerInterceptor {
    public static ThreadLocal<MemberResponseVo> loginUser = new ThreadLocal<>();

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        MemberResponseVo attribute = (MemberResponseVo) request.getSession().getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute != null) {
            loginUser.set(attribute);
            return true;
        } else {
            request.getSession().setAttribute("msg", "请先进行登录");
            response.sendRedirect("http://auth.cfmall.com/login.html");
            return false;
        }
    }
}

编写配置类使得拦截器生效

cfmall-order/src/main/java/com/gyz/cfmall/order/config/CfMallWebConfig.java

package com.gyz.cfmall.order.config;

import com.gyz.cfmall.order.interceptor.LoginUserInterceptor;
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;

import javax.annotation.Resource;

/**
 * @author gong_yz
 * @Description 拦截器配置类
 */
@Configuration
public class CfMallWebConfig implements WebMvcConfigurer {

    @Resource
    private LoginUserInterceptor loginUserInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginUserInterceptor).addPathPatterns("/**");
    }
}

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前端页面

路由跳转：点击去结算跳转至订单确认页

cfmall-cart/src/main/resources/templates/cartList.html

对应接口：cfmall-order/src/main/java/com/gyz/cfmall/order/web/OrderWebController.java

@Controller
public class OrderWebController {

    @GetMapping("/toTrade")
    public String toTrade() {
        return "confirm";
    }
}

未登录进行消息提醒

cfmall-auth-server/src/main/resources/templates/login.html

<span style="color: red" th:if="${session.loginUser!=null}">[[${session.msg}]]</span>

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测试

商城首页，点击右上方“我的购物车”，点击“去结算”，就会跳转到订单确认页面。