修改秒杀/团购 websocket消息推送

mitao

2024-05-27 3af957a67cf00b8d64eb61406df1f8b8072cb08c

 ruoyi-modules/ruoyi-goods/src/main/java/com/ruoyi/goods/service/impl/GoodsSeckillServiceImpl.java

@@ -2,6 +2,8 @@

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.ruoyi.common.core.constant.CacheConstants;
import com.ruoyi.common.core.enums.StartStatusEnum;
import com.ruoyi.common.core.exception.ServiceException;
@@ -17,18 +19,22 @@
import com.ruoyi.goods.service.IGoodsSeckillService;
import com.ruoyi.goods.service.IGoodsSkuService;
import com.ruoyi.goods.service.async.AsyncMethodService;
import com.ruoyi.system.api.WebSocketUsers;
import com.ruoyi.system.api.constants.NotificationTypeConstant;
import com.ruoyi.system.api.domain.GoodsSeckill;
import com.ruoyi.system.api.domain.GoodsSku;
import com.ruoyi.system.api.domain.dto.ListStatusDTO;
import com.ruoyi.system.api.feignClient.OrderClient;
import com.ruoyi.system.api.feignClient.SysUserClient;
import java.time.LocalDateTime;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import util.WebSocketUsers;

/**
 * <p>
@@ -48,6 +54,8 @@
    private final RedisService redisService;
    private final SysUserClient sysUserClient;
    private final AsyncMethodService asyncMethodService;
    // 创建一个静态共享的ObjectMapper实例以重用
    private static final ObjectMapper objectMapper = new ObjectMapper();
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void addGoodsSeckill(GoodsSeckillDTO dto) {
@@ -147,7 +155,7 @@
     * @param seckillId 秒杀id
     */
    @Override
    public void startSeckill(Long seckillId) {
    public void startSeckill(Long seckillId) throws JsonProcessingException {
        log.info(">>>>>>>>>>>>>>>>>>>>{}秒杀开始<<<<<<<<<<<<<<<<<<<<", seckillId);
        GoodsSeckill goodsSeckill = this.getById(seckillId);
        //秒杀商品不能为空且状态为未开始
@@ -162,7 +170,13 @@
                    goodsSeckill.getSeckillStock());
        }
        //推送秒杀开始消息
        WebSocketUsers.sendMessageToUsersByText("秒杀活动已开始");
        Map<String, Object> map = new ConcurrentHashMap<>();
        map.put("notification_type", NotificationTypeConstant.SECKILL);
        map.put("notification_time", LocalDateTime.now());
        map.put("message_type", "start");
        String msg = objectMapper.writeValueAsString(map);
        WebSocketUsers.sendMessageToUsersByText(msg);
        log.info("===================>发送websocket通知，消息体{}", msg);
    }

    /**
@@ -171,7 +185,7 @@
     * @param seckillId 秒杀id
     */
    @Override
    public void endSeckill(Long seckillId) {
    public void endSeckill(Long seckillId) throws JsonProcessingException {
        log.info(">>>>>>>>>>>>>>>>>>>>{}秒杀结束<<<<<<<<<<<<<<<<<<<<", seckillId);
        GoodsSeckill goodsSeckill = this.getById(seckillId);
        if (StringUtils.isNotNull(goodsSeckill)
@@ -182,7 +196,12 @@
//            将秒杀商品从缓存中移除
            redisService.deleteObject(CacheConstants.SECKILL_GOODS + goodsSeckill.getId());
        }
        //TODO websocket 推送秒杀结束消息
        WebSocketUsers.sendMessageToUsersByText("秒杀活动已结束");
        Map<String, Object> map = new ConcurrentHashMap<>();
        map.put("notification_type", NotificationTypeConstant.SECKILL);
        map.put("notification_time", LocalDateTime.now());
        map.put("message_type", "end");
        String msg = objectMapper.writeValueAsString(map);
        WebSocketUsers.sendMessageToUsersByText(msg);
        log.info("===================>发送websocket通知，消息体{}", msg);
    }
}