商品详情展现

业务说明

说明：当用户点击商品时，需要跳转到商品的展现页面中，页面名称item.jsp

重构JT-MANAGE

创建接口

在common中创建接口

编辑Dubbo实现类

package com.jt.service;


import com.alibaba.dubbo.config.annotation.Service;
import com.jt.mapper.ItemDescMapper;
import com.jt.mapper.ItemMapper;
import com.jt.pojo.Item;
import com.jt.pojo.ItemDesc;
import org.springframework.beans.factory.annotation.Autowired;

@Service(timeout = 3000)
public class DubboItemServiceImpl implements DubboItemService{

    @Autowired
    private ItemMapper itemMapper;
    @Autowired
    private ItemDescMapper itemDescMapper;


    @Override
    public Item findItemById(Long itemId) {

        return itemMapper.selectById(itemId);
    }

    @Override
    public ItemDesc findItemDescById(Long itemId) {

        return itemDescMapper.selectById(itemId);
    }
}

编辑YML配置文件

server:
  port: 8091
  servlet:
    context-path: /
spring:
  datasource:
    #引入druid数据源
    #type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/jtdb?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf8&autoReconnect=true&allowMultiQueries=true
    username: root
    password: root

  mvc:
    view:
      prefix: /WEB-INF/views/
      suffix: .jsp
#mybatis-plush配置
mybatis-plus:
  type-aliases-package: com.jt.pojo
  mapper-locations: classpath:/mybatis/mappers/*.xml
  configuration:
    map-underscore-to-camel-case: true

logging:
  level: 
    com.jt.mapper: debug

#关于Dubbo配置
dubbo:
  scan:
    basePackages: com.jt    #指定dubbo的包路径 扫描dubbo注解
  application:              #应用名称
    name: provider-manage     #一个接口对应一个服务名称   一个接口可以有多个实现
  registry:  #注册中心 用户获取数据从机中获取 主机只负责监控整个集群 实现数据同步
    address: zookeeper://192.168.126.129:2181?backup=192.168.126.129:2182,192.168.126.129:2183
  protocol:  #指定协议
    name: dubbo  #使用dubbo协议(tcp-ip)  web-controller直接调用sso-Service
    port: 20881  #每一个服务都有自己特定的端口 不能重复.

编辑ItemController

package com.jt.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.jt.pojo.Item;
import com.jt.pojo.ItemDesc;
import com.jt.service.DubboItemService;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/items")
public class ItemController {

    @Reference(timeout = 3000)
    private DubboItemService itemService;

    /**
     * 实现商品详情页面跳转
     * url: http://www.jt.com/items/562379.html
     * 参数: 562379 itemId
     * 返回值:  item.jsp页面
     * 页面取值说明:
     *      ${item.title }   item对象
     *      ${itemDesc.itemDesc }  itemDesc对象
     *
     * 思路:
     *      1.重构jt-manage项目
     *      2.创建中立接口DubboItemService
     *      3.实现业务调用获取item/itemDesc对象
     */
    @RequestMapping("/{itemId}")
    public String findItemById(@PathVariable Long itemId, Model model){

        Item item = itemService.findItemById(itemId);
        ItemDesc itemDesc = itemService.findItemDescById(itemId);
        //将数据保存到request域中
        model.addAttribute("item",item);
        model.addAttribute("itemDesc",itemDesc);
        return "item";
    }
}

页面效果展现