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@@ -8,8 +8,11 @@ import org.slf4j.LoggerFactory;
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import org.springframework.stereotype.Service;
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import org.springframework.beans.factory.annotation.Autowired;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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+import org.springframework.util.CollectionUtils;
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+import java.util.ArrayList;
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import java.util.List;
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+import java.util.stream.Collectors;
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/**
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* AlbumFavoriteService服务实现类
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@@ -37,4 +40,17 @@ public class AlbumFavoriteServiceImpl extends ServiceImpl<AlbumFavoriteDao,Album
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.eq(AlbumFavorite::getUserId, studentId)
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.list();
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}
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+
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+ @Override
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+ public List<Long> selectFavorite(Long userId, List<Long> albumIds) {
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+ List<AlbumFavorite> list = this.lambdaQuery()
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+ .in(AlbumFavorite::getAlbumId, albumIds)
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+ .eq(AlbumFavorite::getUserId, userId)
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+ .list();
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+
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+ if (CollectionUtils.isEmpty(list)) {
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+ return new ArrayList<>();
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+ }
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+ return list.stream().map(AlbumFavorite::getAlbumId).collect(Collectors.toList());
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+ }
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}
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