fish2018/pansou · error

[ ] JSON序列化失败

Error message

[%s] JSON序列化失败: %w

What it means

searchImpl in the xdyh plugin marshals the request struct to JSON with json.Marshal before sending the POST. Marshaling of plain struct fields virtually never fails, so this error indicates an internal problem (e.g. an unsupported type like chan/func or a cyclic reference in requestBody).

Solutions

1. Inspect the wrapped error to find the offending field/type
2. Remove or change the unsupported field type in the request struct
3. Add a unit test marshaling the request body to catch regressions

Example fix

// before
type requestBody struct {
    Callback func() `json:"cb"` // unsupported
}
// after
type requestBody struct {
    Keyword  string `json:"keyword"`
    SplitLinks bool `json:"splitLinks"`
}

if _, err := json.Marshal(requestBody); err != nil {
    return fmt.Errorf("请求体不可序列化: %w", err)
}

jsonData, err := json.Marshal(requestBody)
if err != nil {
    return nil, fmt.Errorf("[%s] JSON序列化失败: %w", pluginName, err)
}

When it happens

Trigger: json.Marshal on the request body returns an error — practically only if requestBody gains an unsupported field type (chan, func, complex) or a marshaler returns an error.

Common situations: Refactoring adds a field with an unsupported type to the request struct; custom MarshalJSON on a nested value fails.

Understand the failure class

Background: json.Marshal / "failed to marshal" errors in Go: why "unsupported type" happens and how to fix it — this error's family across 22 libraries.

Related errors

• marshal request failed
• marshal request failed
• [ ] 序列化请求体失败
• marshal request failed
• 构造搜索参数失败

AI-assisted analysis of fish2018/pansou@beaa561337 (2026-09-07). Data as JSON: /api/errors/62b74a4d796f5eb4. Report an issue: GitHub.

Appendix: source

Thrown at plugin/xdyh/xdyh.go:126

	if cached, ok := searchCache.Load(cacheKey); ok {
		if results, ok := cached.([]model.SearchResult); ok {
			return results, nil
		}
	}
	
	// 2. 构建请求体
	requestBody := SearchRequest{
		Keyword:    keyword,
		Sites:      nil,  // null表示搜索所有站点
		MaxWorkers: 10,   // API默认并发数
		SaveToFile: false,
		SplitLinks: true,
	}
	
	// 3. JSON序列化
	jsonData, err := json.Marshal(requestBody)
	if err != nil {
		return nil, fmt.Errorf("[%s] JSON序列化失败: %w", pluginName, err)
	}
	
	// 4. 创建带超时的上下文
	ctx, cancel := context.WithTimeout(context.Background(), DefaultTimeout)
	defer cancel()
	
	// 5. 创建请求
	req, err := http.NewRequestWithContext(ctx, "POST", apiURL, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("[%s] 创建请求失败: %w", pluginName, err)
	}
	
	// 6. 设置请求头
	p.setRequestHeaders(req)
	
	// 7. 发送请求
	resp, err := p.doRequestWithRetry(req, client)
	if err != nil {

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