Struct AppError 

pub struct AppError {
    pub code: String,
    pub message: String,
    pub message_detail: Option<String>,
    pub context: Value,
    pub source: Option<Error>,
}

应用程序统一错误类型

Fields

code: String

错误代码

message: String

错误消息

message_detail: Option<String>

详细错误信息

context: Value

上下文信息

source: Option<Error>

原始异常和堆栈追踪

Implementations

impl AppError

pub fn new(code: &str, message: &str) -> Self

创建新的错误实例

pub fn code(&self) -> &str

获取错误代码

pub fn message(&self) -> &str

获取错误消息

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

获取详细错误信息

pub fn with_message_detail(self, detail: &str) -> Self

设置详细错误信息

pub fn with_attribute(self, key: &str, value: impl Into<Value>) -> Self

添加上下文信息

pub fn get_attribute(&self, key: &str) -> Option<&Value>

获取上下文信息

pub fn source(&self) -> Option<&AnyhowError>

获取原始异常信息

pub fn with_context(self, context: Value) -> Self

设置完整的上下文信息

pub fn with_source(self, source: AnyhowError) -> Self

设置原始异常信息

pub fn from_error<E: Error + Send + Sync + 'static>( code: &str, message: &str, err: E, ) -> Self

从其他错误类型创建AppError

pub fn from_anyhow(code: &str, message: &str, err: AnyhowError) -> Self

从anyhow::Error创建AppError

pub fn from_display<E: Display>(code: &str, message: &str, err: E) -> Self

从Display类型创建AppError

pub fn from_display_with_source<E: Display + Error + Send + Sync + 'static>( code: &str, message: &str, err: E, ) -> Self

从Display类型创建AppError并保存原始错误

pub fn get_cause(&self) -> Option<String>

获取完整的错误堆栈信息

Trait Implementations

impl Clone for AppError

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AppError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AppError

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for AppError

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

Formats the value using the given formatter.

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<AppError> for Error

从AppError转换为std::io::Error

支持在返回 std::io::Result 的函数中使用 ? 操作符

示例

use knife_util::AppError;
use std::fs::File;
 
fn read_file() -> std::io::Result<String> {
    let mut file = File::open("nonexistent.txt")?; // 自动转换为 AppError
    // ... 其他操作
    Ok("content".to_string())
}

fn from(err: AppError) -> Self

Converts to this type from the input type.

impl From<Error> for AppError

从std::io::Error转换为AppError

支持通过 ? 操作符自动处理 IOError

示例

use knife_util::AppError;
use std::fs::File;
 
fn read_file() -> Result<String, AppError> {
    let mut file = File::open("nonexistent.txt")?; // 自动转换为 AppError
    // ... 其他操作
    Ok("content".to_string())
}

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<TryInitError> for AppError

从TryInitError转换为AppError

fn from(err: TryInitError) -> Self

Converts to this type from the input type.

impl Serialize for AppError

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.