Enum AppError 

pub enum AppError {
    ErrCode {
        domain: &'static str,
        code: i32,
        message: &'static str,
    },
    WithContext {
        domain: &'static str,
        code: i32,
        message: &'static str,
        context: String,
    },
    Internal(Error),
}

统一错误类型。

所有错误统一走这一种类型，Result<T, AppError> 贯穿全栈。 不实现 Clone（因为 anyhow::Error 不是 Clone）。

Variants

ErrCode

业务错误码（归一化值类型，零堆分配）

Fields

domain: &'static str

code: i32

message: &'static str

WithContext

带上下文的业务错误（错误码 + 动态信息）

Fields

domain: &'static str

code: i32

message: &'static str

context: String

Internal(Error)

内部错误（IO / JSON / 配置 / 第三方库 / anyhow） 插件直接用 anyhow::Result + ? 即可自动走这条路径。

Implementations

impl AppError

pub fn from_code<C>(code: C) -> AppError

where C: CodeMsg,

从业务错误码构造

pub fn with_context<C>(code: C, context: impl Into<String>) -> AppError

where C: CodeMsg,

带上下文构造

pub fn from_anyhow(err: Error) -> AppError

从 anyhow 构造内部错误

impl AppError

pub fn domain(&self) -> &'static str

pub fn code(&self) -> i32

pub fn message(&self) -> &str

获取错误消息。

• 对 ErrCode / WithContext 返回静态消息字符串
• 对 Internal 返回 "Internal error"（不泄漏内存）

如需包含 Internal 错误的完整信息，请使用 full_message()。

pub fn context(&self) -> Option<&str>

获取上下文（如果有）

pub fn internal(&self) -> Option<&Error>

获取内部错误（如果是 Internal）

pub fn full_message(&self) -> String

完整消息（静态消息 + 上下文，或内部错误链）

pub fn err_code(&self) -> AppErrCode

获取 AppErrCode（丢弃上下文和内部错误细节）

pub fn is_same_kind(&self, other: &AppError) -> bool

是否为同一类错误

pub fn is_internal(&self) -> bool

是否为内部错误

Trait Implementations

impl Debug for AppError

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for AppError

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Eq for AppError

impl Error for AppError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<&str> for AppError

fn from(s: &str) -> AppError

Converts to this type from the input type.

impl From<AppError> for ApiR<()>

AppError → ApiRes 转换

fn from(err: AppError) -> ApiR<()>

Converts to this type from the input type.

impl From<DiErr> for AppError

fn from(e: DiErr) -> AppError

Converts to this type from the input type.

impl From<DiErr> for AppError

fn from(e: DiErr) -> Self

Converts to this type from the input type.

impl From<Error> for AppError

fn from(err: Error) -> AppError

Converts to this type from the input type.

impl From<Error> for AppError

fn from(err: Error) -> AppError

Converts to this type from the input type.

impl From<Error> for AppError

fn from(err: Error) -> AppError

Converts to this type from the input type.

impl From<Error> for AppError

fn from(err: Error) -> AppError

Converts to this type from the input type.

impl From<String> for AppError

fn from(s: String) -> AppError

Converts to this type from the input type.

impl PartialEq for AppError

fn eq(&self, other: &AppError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.