go encoding_error ai_generated true

json：无效的递归类型：类型 MyStruct 具有递归 JSON 方法

json: invalid recursive type: type MyStruct has recursive JSON method

ID: go/json-marshal-infinite-recursion

其他格式: JSON · Markdown 中文 · English
90%修复率
85%置信度
1证据数
2023-07-12首次发现

版本兼容性

版本状态引入弃用备注
Go 1.15 active — — —
Go 1.16 active — — —
Go 1.17 active — — —
Go 1.18 active — — —
Go 1.19 active — — —
Go 1.20 active — — —
Go 1.21 active — — —
Go 1.22 active — — —
Go 1.23 active — — —

根因分析

类型上的自定义 MarshalJSON 或 UnmarshalJSON 方法对自身调用 json.Marshal 或 json.Unmarshal，导致无限递归。

English

A custom MarshalJSON or UnmarshalJSON method on a type calls json.Marshal or json.Unmarshal on itself, causing infinite recursion.

generic

官方文档

https://pkg.go.dev/encoding/json#Marshaler

解决方案

  1. Define an alias type (type MyStructAlias MyStruct) and marshal the alias instead of the original type
  2. Use a raw byte slice or map[string]interface{} for manual marshaling without calling json.Marshal on self
  3. Implement MarshalJSON by calling json.Marshal on a temporary struct that mirrors the fields without the recursive method

无效尝试

常见但无效的做法:

  1. 95% 失败

    Both functions call the same MarshalJSON method; recursion persists.

  2. 70% 失败

    Loses custom serialization behavior; data may be serialized incorrectly.

  3. 80% 失败

    json package detects recursion before runtime depth limit; counter doesn't prevent detection.