# json: invalid character '\xff' looking for beginning of value

- **ID:** `go/json-invalid-utf8`
- **Domain:** go
- **Category:** data_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

JSON数据包含无效的UTF-8字节

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 1.19 | active | — | — |

## Workarounds

1. **** (90% success)
   ```
   使用utf8.Valid检查数据
   ```
2. **** (70% success)
   ```
   使用json.Decoder的DisallowUnknownFields
   ```

## Dead Ends

- **** — 可能破坏JSON结构 (50% fail)
- **** — 导致解析失败 (90% fail)