fish2018/pansou · error

[ ] JSON解析失败

Error message

[%s] JSON解析失败: %w

What it means

ikantv plugin's doSearch throws this when json.Unmarshal(body, &apiResp) fails to decode the response into apiResponse. The body is not valid JSON or its field types conflict with the apiResponse struct.

Solutions

1. Dump/log the raw body on failure to see whether it is JSON, HTML, or empty.
2. Compare the body against the apiResponse struct — update field names/types if the API schema changed.
3. Check whether the API now requires different headers/cookies and update the request.
4. Add content-type validation before unmarshalling to give a clearer error on HTML responses.

Example fix

// before
var apiResp apiResponse
if err := json.Unmarshal(body, &apiResp); err != nil {
	return nil, fmt.Errorf("[%s] JSON解析失败: %w", p.Name(), err)
}
// after
var apiResp apiResponse
if err := json.Unmarshal(body, &apiResp); err != nil {
	return nil, fmt.Errorf("[%s] JSON解析失败: %s...: %w", p.Name(), string(body[:min(200, len(body))]), err)
}

// verify the response is JSON before decoding
if !strings.Contains(resp.Header.Get("Content-Type"), "json") {
	return fmt.Errorf("ikantv returned non-JSON content-type: %q", resp.Header.Get("Content-Type"))
}

func isJSONBody(b []byte) bool {
	t := bytes.TrimSpace(b)
	return len(t) > 0 && (t[0] == '{' || t[0] == '[')
}

results, err := p.doSearch(ctx, keyword)
if err != nil && strings.Contains(err.Error(), "JSON解析失败") {
	// log the raw body once to determine HTML-vs-schema drift, then update the struct
	log.Printf("ikantv response not JSON — check API contract: %v", err)
}

When it happens

Trigger: The 200-status body is HTML (anti-bot interstitial), empty, truncated, or JSON with mismatched types (e.g. code delivered as string not number), so unmarshalling into apiResponse errors.

Common situations: Site changed its API shape or now serves a challenge page instead of JSON; CDN/WAF injects HTML; an upstream outage returns an error page with status 200.

Understand the failure class

Background: "failed to unmarshal" / json.Unmarshal errors: why parsing a response into a Go struct fails and how to fix it — this error's family across 23 libraries.

Related errors

• decode response failed
• JSON解析失败
• [ ] 网盘第 页JSON解析失败
• [ ] hsid= 链接JSON解析失败
• 解析接口响应失败

AI-assisted analysis of fish2018/pansou@beaa561337 (2026-09-07). Data as JSON: /api/errors/c84a4c7fdbc3aa90. Report an issue: GitHub.

Appendix: source

Thrown at plugin/ikantv/ikantv.go:100

	resp, err := p.doRequestWithRetry(req, client)
	if err != nil {
		return nil, fmt.Errorf("[%s] 搜索请求失败: %w", p.Name(), err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("[%s] 请求返回状态码: %d", p.Name(), resp.StatusCode)
	}

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("[%s] 读取响应失败: %w", p.Name(), err)
	}

	var apiResp apiResponse
	if err := json.Unmarshal(body, &apiResp); err != nil {
		return nil, fmt.Errorf("[%s] JSON解析失败: %w", p.Name(), err)
	}
	if apiResp.Code != 0 {
		return nil, fmt.Errorf("[%s] API错误: %s", p.Name(), apiResp.Message)
	}

	results := convertResults(apiResp.Data)
	return plugin.FilterResultsByKeyword(results, keyword), nil
}

func convertResults(items []apiItem) []model.SearchResult {
	results := make([]model.SearchResult, 0, len(items))
	for _, item := range items {
		result, ok := convertResult(item)
		if !ok {
			continue
		}
		results = append(results, result)
	}

View on GitHub (pinned to beaa561337)