JavaWeb_LeadNews_Day9-Redis实现用户行为

网关配置

nacos: leadnews-app-gateway

# 用户行为微服务
- id: leadnews-behavior
    uri: lb://leadnews-behavior
    predicates:
    - Path=/behavior/**
    filters:
    - StripPrefix= 1

nacos: leadnews-behavior
在配置文件中去除数据源自动配置

spring:
  # redis配置
  redis:
    host: localhost
    # password: 
    port: 6379
  autoconfigure:
    exclude: org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration

点赞

• 当前登录的用户点击了”赞“,就要保存当前行为数据
• 可以取消点赞

public ResponseResult likesBehavior(LikesBehaviorDto dto) {
    // 1. 检查参数
    if(dto == null || dto.getArticleId() == null || checkParam(dto)){
        return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }

    // 2. 是否登录
    ApUser user = AppThreadLocalUtil.getUser();
    if(user == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
    }

    // 3. 点赞, 保存数据
    if(dto.getOperation() == 0){
        // 点赞
        Object obj = cacheService.hGet(BehaviorConstants.LIKE_BEHAVIOR + dto.getArticleId().toString(), user.getId().toString());
        if(obj != null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "已点赞");
        }
        // 保存当前key
        log.info("保存当前key:{} ,{}, {}", BehaviorConstants.LIKE_BEHAVIOR+dto.getArticleId(), user.getId(), dto);
        cacheService.hPut(BehaviorConstants.LIKE_BEHAVIOR + dto.getArticleId().toString(), user.getId().toString(), JSON.toJSONString(dto));
    }else{
        // 取消点赞
        // 删除当前key
        log.info("删除当前key:{}, {}", BehaviorConstants.LIKE_BEHAVIOR+dto.getArticleId(), user.getId());
        cacheService.hDelete(BehaviorConstants.LIKE_BEHAVIOR + dto.getArticleId().toString(), user.getId().toString());
    }
    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
}

private boolean checkParam(LikesBehaviorDto dto) {
    if(dto.getType() > 2 || dto.getType() < 0 || dto.getOperation() > 1 || dto.getOperation() < 0){
        return true;
    }
    return false;
}

阅读

• 当用户查看了某一篇文章，需要记录当前用户查看的次数

public ResponseResult readBehavior(ReadBehaviorDto dto) {
    // 1. 检查次数
    if(dto == null || dto.getArticleId() == null || dto.getCount() == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }

    // 2. 是否登录
    ApUser user = AppThreadLocalUtil.getUser();
    if(user == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
    }

    // 3. 阅读, 保存数据
    // 3.1 更新阅读次数
    String readBehaviorJson = (String) cacheService.hGet(BehaviorConstants.READ_BEHAVIOR + dto.getArticleId().toString(), user.getId().toString());
    if(StringUtils.isNotBlank(readBehaviorJson)){
        ReadBehaviorDto readBehaviorDto = JSON.parseObject(readBehaviorJson, ReadBehaviorDto.class);
        dto.setCount(readBehaviorDto.getCount()+dto.getCount());
    }
    // 3.2 保存数据
    // 保存当前key
    log.info("保存当前key:{} {} {}", BehaviorConstants.READ_BEHAVIOR+dto.getArticleId(), user.getId(), dto);
    cacheService.hPut(BehaviorConstants.READ_BEHAVIOR+dto.getArticleId().toString(), user.getId().toString(), JSON.toJSONString(dto));
    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
}

不喜欢

用户点击了不喜欢, 就不再给当前用户推荐这一类型的文章信息

public ResponseResult unLikesBehavior(UnLikesBehaviorDto dto) {
    // 1. 检查次数
    if(dto == null || dto.getArticleId() == null || dto.getType() > 1 || dto.getType() < 0){
        return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }

    // 2. 是否登录
    ApUser user = AppThreadLocalUtil.getUser();
    if(user == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
    }

    // 3. 不喜欢文章, 保存数据
    if(dto.getType() == 0){
        // 不喜欢
        Object o = cacheService.hGet(BehaviorConstants.UN_LIKE_BEHAVIOR + dto.getArticleId().toString(), user.getId().toString());
        if(o != null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "已经不喜欢");
        }
        log.info("保存当前key:{} ,{}, {}", BehaviorConstants.UN_LIKE_BEHAVIOR+dto.getArticleId(), user.getId(), dto);
        cacheService.hPut(BehaviorConstants.UN_LIKE_BEHAVIOR + dto.getArticleId().toString(), user.getId().toString(), JSON.toJSONString(dto));
    }else{
        // 取消不喜欢
        log.info("删除当前key:{}, {}", BehaviorConstants.UN_LIKE_BEHAVIOR+dto.getArticleId(), user.getId());
        cacheService.hDelete(BehaviorConstants.UN_LIKE_BEHAVIOR + dto.getArticleId().toString(), user.getId().toString());
    }
    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
}

关注

• 当前登录后的用户可以关注作者，也可以取消关注作者
• 从用户的角度出发：一个用户可以关注其他多个作者 —— 我的关注
• 从作者的角度出发：一个用户（同是作者）也可以拥有很多个粉丝 —— 我的粉丝

public ResponseResult userFollow(UserRelationDto dto) {
    // 1. 检查参数
    if(dto == null || checkParam(dto)){
        return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }

    // 2. 是否登录
    ApUser user = AppThreadLocalUtil.getUser();
    if(user == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
    }

    // 3. 关注, 保存数据
    if(dto.getOperation() == 0){
        // 关注
        // 将作者写入我的关注中
        cacheService.zAdd(BehaviorConstants.APUSER_FOLLOW_RELATION+user.getId(), dto.getAuthorId().toString(), System.currentTimeMillis());
        // 将我写入作者的粉丝中
        cacheService.zAdd(BehaviorConstants.APUSER_FANS_RELATION+dto.getAuthorId(), user.getId().toString(), System.currentTimeMillis());
    }else{
        // 取消关注
        cacheService.zRemove(BehaviorConstants.APUSER_FOLLOW_RELATION+user.getId(), dto.getAuthorId().toString());
        cacheService.zRemove(BehaviorConstants.APUSER_FANS_RELATION+dto.getAuthorId(), user.getId().toString());
    }
    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
}

private boolean checkParam(UserRelationDto dto) {
    if(dto.getArticleId() == null || dto.getAuthorId() == null){
        return true;
    }
    if(dto.getOperation() > 1 || dto.getOperation() < 0){
        return true;
    }
    return false;
}

收藏

• 记录当前登录人收藏的文章

public ResponseResult collectionBehavior(CollectionBehaviorDto dto) {
    // 1. 检查参数
    if(dto == null || checkParam(dto)){
        return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }
    // 2. 是否登录
    ApUser user = AppThreadLocalUtil.getUser();
    if(user == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
    }

    // 3. 文章收藏, 数据保存
    if(dto.getOperation() == 0){
        // 收藏

        // 判断是否已经收藏
        String collectionJson = (String) cacheService.hGet(BehaviorConstants.COLLECTION_BEHAVIOR + dto.getEntryId(), user.getId().toString());
        if(StringUtils.isNotBlank(collectionJson)){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "已收藏");
        }

        log.info("文章收藏，保存key:{},{},{}",BehaviorConstants.COLLECTION_BEHAVIOR + user.getId(),dto.getEntryId().toString(), JSON.toJSONString(dto));
        cacheService.hPut(BehaviorConstants.COLLECTION_BEHAVIOR + user.getId(),dto.getEntryId().toString(), JSON.toJSONString(dto));
    }else{
        // 取消收藏
        log.info("文章收藏，删除key:{},{},{}",BehaviorConstants.COLLECTION_BEHAVIOR + user.getId(),dto.getEntryId().toString());
        cacheService.hDelete(BehaviorConstants.COLLECTION_BEHAVIOR + user.getId(),dto.getEntryId().toString());
    }
    
    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
}

文章详情-行为数据回显

展示文章的关系，app端用户必须登录，判断当前用户是否已经关注该文章的作者、是否收藏了此文章、是否点赞了文章、是否不喜欢该文章等

public ResponseResult loadArticleBehavior(ArticleInfoDto dto) {
    // 1. 检查数据
    if(dto == null || dto.getArticleId() == null || dto.getAuthorId() == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }
    // 2. 是否登录
    ApUser user = AppThreadLocalUtil.getUser();
    if(user == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
    }
    // 3. 回显数据
    Map<String, Boolean> map = new HashMap<>();
    Boolean islike = false, isunlike = false, iscollection = false, isfollow = false;
    // 3.1 是否点赞
    String likeJson = (String) cacheService.hGet(BehaviorConstants.LIKE_BEHAVIOR + dto.getArticleId(), user.getId().toString());
    if(likeJson != null){
        islike = true;
    }
    // 3.2 是否不喜欢
    String unLikeJson = (String) cacheService.hGet(BehaviorConstants.UN_LIKE_BEHAVIOR + dto.getArticleId(), user.getId().toString());
    if(unLikeJson != null){
        isunlike = true;
    }
    // 3.3 是否收藏
    String collectiontJson = (String) cacheService.hGet(BehaviorConstants.COLLECTION_BEHAVIOR + user.getId(), dto.getArticleId().toString());
    if(collectiontJson != null){
        iscollection = true;
    }
    // 3.4 是否关注
    Double score = cacheService.zScore(BehaviorConstants.APUSER_FOLLOW_RELATION + user.getId(), dto.getAuthorId().toString());
    if(score != null){
        isfollow = true;
    }
    map.put("islike", islike);
    map.put("isunlike", isunlike);
    map.put("iscollection", iscollection);
    map.put("isfollow", isfollow);
    return ResponseResult.okResult(map);
}

来源

黑马程序员. 黑马头条

Gitee

https://gitee.com/yu-ba-ba-ba/leadnews