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自媒体文章上下架功能完成

需求分析

流程说明

接口定义

	说明
接口路径	/api/v1/news/down_or_up
请求方式	POST
参数	DTO
响应结果	ResponseResult

DTO

@Data
public class WmNewsDto {private Integer id;/*** 是否上架  0 下架  1 上架*/private Short enable;}

ResponseResult

自媒体文章上下架-功能实现

接口定义

在heima-leadnews-wemedia工程下的WmNewsController新增方法

@PostMapping("/down_or_up")
public ResponseResult downOrUp(@RequestBody WmNewsDto dto){return null;
}

在WmNewsDto中新增enable属性 ，完整的代码如下：

package com.heima.model.wemedia.dtos;import lombok.Data;import java.util.Date;
import java.util.List;@Data
public class WmNewsDto {private Integer id;/*** 标题*/private String title;/*** 频道id*/private Integer channelId;/*** 标签*/private String labels;/*** 发布时间*/private Date publishTime;/*** 文章内容*/private String content;/*** 文章封面类型  0 无图 1 单图 3 多图 -1 自动*/private Short type;/*** 提交时间*/private Date submitedTime; /*** 状态 提交为1  草稿为0*/private Short status;/*** 封面图片列表 多张图以逗号隔开*/private List<String> images;/*** 上下架 0 下架  1 上架*/private Short enable;
}

9.4.2)业务层编写

在WmNewsService新增方法

/*** 文章的上下架* @param dto* @return*/
public ResponseResult downOrUp(WmNewsDto dto);

实现方法

/*** 文章的上下架* @param dto* @return*/
@Override
public ResponseResult downOrUp(WmNewsDto dto) {//1.检查参数if(dto.getId() == null){return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);}//2.查询文章WmNews wmNews = getById(dto.getId());if(wmNews == null){return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"文章不存在");}//3.判断文章是否已发布if(!wmNews.getStatus().equals(WmNews.Status.PUBLISHED.getCode())){return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID,"当前文章不是发布状态，不能上下架");}//4.修改文章enableif(dto.getEnable() != null && dto.getEnable() > -1 && dto.getEnable() < 2){update(Wrappers.<WmNews>lambdaUpdate().set(WmNews::getEnable,dto.getEnable()).eq(WmNews::getId,wmNews.getId()));}return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
}

9.4.3)控制器

@PostMapping("/down_or_up")
public ResponseResult downOrUp(@RequestBody WmNewsDto dto){return wmNewsService.downOrUp(dto);
}

9.4.4)测试

消息通知article端文章上下架

在heima-leadnews-common模块下导入kafka依赖

<!-- kafkfa -->
<dependency><groupId>org.springframework.kafka</groupId><artifactId>spring-kafka</artifactId>
</dependency>
<dependency><groupId>org.apache.kafka</groupId><artifactId>kafka-clients</artifactId>
</dependency>

9.5.2)在自媒体端的nacos配置中心配置kafka的生产者

spring:kafka:bootstrap-servers: 172.20.10.2:9092producer:retries: 10key-serializer: org.apache.kafka.common.serialization.StringSerializervalue-serializer: org.apache.kafka.common.serialization.StringSerializer

9.5.3)在自媒体端文章上下架后发送消息

//发送消息，通知article端修改文章配置
if(wmNews.getArticleId() != null){Map<String,Object> map = new HashMap<>();map.put("articleId",wmNews.getArticleId());map.put("enable",dto.getEnable());kafkaTemplate.send(WmNewsMessageConstants.WM_NEWS_UP_OR_DOWN_TOPIC,JSON.toJSONString(map));
}

常量类：

public class WmNewsMessageConstants {public static final String WM_NEWS_UP_OR_DOWN_TOPIC="wm.news.up.or.down.topic";
}

9.5.4)在article端的nacos配置中心配置kafka的消费者

spring:kafka:bootstrap-servers: 172.20.10.2:9092consumer:group-id: ${spring.application.name}key-deserializer: org.apache.kafka.common.serialization.StringDeserializervalue-deserializer: org.apache.kafka.common.serialization.StringDeserializer

9.5.5)在article端编写监听，接收数据

package com.heima.article.listener;import com.alibaba.fastjson.JSON;
import com.heima.article.service.ApArticleConfigService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;import java.util.Map;@Component
@Slf4j
public class ArtilceIsDownListener {@Autowiredprivate ApArticleConfigService apArticleConfigService;@KafkaListener(topics = WmNewsMessageConstants.WM_NEWS_UP_OR_DOWN_TOPIC)public void onMessage(String message){if(StringUtils.isNotBlank(message)){Map map = JSON.parseObject(message, Map.class);apArticleConfigService.updateByMap(map);log.info("article端文章配置修改，articleId={}",map.get("articleId"));}}
}

9.5.6)修改ap_article_config表的数据

新建ApArticleConfigService

package com.heima.article.service;import com.baomidou.mybatisplus.extension.service.IService;
import com.heima.model.article.pojos.ApArticleConfig;import java.util.Map;public interface ApArticleConfigService extends IService<ApArticleConfig> {/*** 修改文章配置* @param map*/public void updateByMap(Map map);
}

实现类：

package com.heima.article.service.impl;import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.article.mapper.ApArticleConfigMapper;
import com.heima.article.service.ApArticleConfigService;
import com.heima.model.article.pojos.ApArticleConfig;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;import java.util.Map;@Service
@Slf4j
@Transactional
public class ApArticleConfigServiceImpl extends ServiceImpl<ApArticleConfigMapper, ApArticleConfig> implements ApArticleConfigService {/*** 修改文章配置* @param map*/@Overridepublic void updateByMap(Map map) {//0 下架 1 上架Object enable = map.get("enable");boolean isDown = true;if(enable.equals(1)){isDown = false;}//修改文章配置update(Wrappers.<ApArticleConfig>lambdaUpdate().eq(ApArticleConfig::getArticleId,map.get("articleId")).set(ApArticleConfig::getIsDown,isDown));}
}