🦀 JSON 转 Rust 结构体（serde）JSON to Rust Struct (serde)

使用说明与常见问题How-to & FAQ

「JSON 转 Rust 结构体（serde）」是什么？What is the JSON to Rust Struct (serde) tool?

根据 JSON 生成 Rust 结构体，带 serde 的 Serialize / Deserialize 派生和 #[serde(rename)] 属性；可空或缺失字段用 Option，混合类型用 serde_json::Value。Generate Rust structs from JSON with serde Serialize/Deserialize derives and #[serde(rename)] attributes; nullable or missing fields use Option and mixed types use serde_json::Value.

如何使用「JSON 转 Rust 结构体（serde）」？How do I use the JSON to Rust Struct (serde)?

粘贴 JSON，选择整数类型，下方生成 Rust 代码。在 Cargo.toml 加上 serde（features = ["derive"]）和 serde_json，用 serde_json::from_str::(text) 解析。Paste JSON and choose the integer type to get Rust code. Add serde (features = ["derive"]) and serde_json to Cargo.toml, then parse with serde_json::from_str::(text).

键名是 Rust 关键字怎么办？What if a key is a Rust keyword?

例如 "type" 会生成原始标识符 r#type，序列化时仍使用原来的键名；含连字符或驼峰的键会转成 snake_case 并加 #[serde(rename = "...")]。A key such as "type" becomes the raw identifier r#type and still serializes under its original name; hyphenated or camelCase keys become snake_case with #[serde(rename = "...")].

为什么有的字段带 skip_serializing_if？Why do some fields have skip_serializing_if?

在数组的部分对象中缺失的字段会用 Option 并加上 #[serde(default, skip_serializing_if = "Option::is_none")]，这样反序列化缺字段不会报错，序列化时也不会输出 null。Fields missing from some objects use Option with #[serde(default, skip_serializing_if = "Option::is_none")], so missing keys deserialize fine and None is not written back as null.

「JSON 转 Rust 结构体（serde）」免费吗？数据会上传吗？Is the JSON to Rust Struct (serde) free? Is my data uploaded?

「JSON 转 Rust 结构体（serde）」完全免费，无需注册或安装，手机和电脑都能用；所有处理都在你的浏览器本地完成，输入的内容和文件不会上传到服务器。The JSON to Rust Struct (serde) is completely free with no sign-up or install and works on phones and desktops; everything runs locally in your browser and nothing you enter is uploaded.