fish2018/pansou · warning

no posts found

Error message

no posts found

What it means

Empty-result error in GetTopicDetail (plugin/discourse/discourse.go:500): the JSON parsed fine but PostStream.Posts is empty, so there is no post from which to extract pan links. Fires for topics that exist yet contain no posts the endpoint returned (empty or restricted topic).

Solutions

1. Verify the topic actually has posts by opening it in a browser
2. Check whether the topic requires login; authenticate the scraper session if so
3. Update DetailResponse struct to match the forum's current Discourse API schema
4. Treat as an empty result and skip the topic instead of failing hard

Example fix

// before
if len(detailResp.PostStream.Posts) == 0 {
    return nil, fmt.Errorf("no posts found")
}
// after
if len(detailResp.PostStream.Posts) == 0 {
    return nil, nil // empty topic; nothing to extract
}

// check the topic has content before extracting links
resp, _ := http.Get(baseURL + "/t/" + id + ".json")
var probe struct{ PostsCount int `json:"posts_count"` }
json.NewDecoder(resp.Body).Decode(&probe)
if probe.PostsCount == 0 {
    return nil // skip empty topic
}

func hasPosts(d DetailResponse) bool { return len(d.PostStream.Posts) > 0 }

links, err := plugin.GetTopicDetail(id)
if err != nil {
    if err.Error() == "no posts found" {
        log.Printf("topic %d has no posts; skipping", id)
        return nil, nil
    }
    return nil, err
}

When it happens

Trigger: Detail JSON parsed successfully but post_stream.posts array is empty — e.g. topic is empty/deleted, access restricted so posts are withheld, or the JSON shape changed so posts land elsewhere.

Common situations: 主题仅含标题无正文；API 返回了被审核删除后的空帖列表。

Understand the failure class

Background: EmptyResultError / "no results found": when an API or scraper succeeds but returns zero rows — this error's family across 9 libraries.

Related errors

• 下载链接JSON解析失败
• [ ] parse json failed on page
• parse json failed
• [ ] API JSON 解析失败
• [ ] 解析搜索响应失败

AI-assisted analysis of fish2018/pansou@beaa561337 (2026-09-07). Data as JSON: /api/errors/4dcce21fa9d7126f. Report an issue: GitHub.

Appendix: source

Thrown at plugin/discourse/discourse.go:500

	if resp.StatusCode != 200 {
		return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
	}

	// 读取响应体
	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("read response failed: %w", err)
	}

	// 解析JSON响应
	var detailResp DetailResponse
	if err := json.Unmarshal(body, &detailResp); err != nil {
		return nil, fmt.Errorf("parse json failed: %w", err)
	}

	// 提取第一个帖子的链接
	if len(detailResp.PostStream.Posts) == 0 {
		return nil, fmt.Errorf("no posts found")
	}

	mainPost := detailResp.PostStream.Posts[0]
	
	// 从 link_counts 中提取网盘链接
	var links []model.Link
	for _, linkCount := range mainPost.LinkCounts {
		// 跳过内部链接
		if linkCount.Internal {
			continue
		}
		
		// 判断是否为网盘链接并解析
		link := p.parseNetDiskLink(linkCount.URL)
		if link != nil {
			links = append(links, *link)
		}
	}

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