Enum Error 

pub enum Error {
    Database(Error),
    Pool(String),
    Transaction(String),
    Query(String),
    Conversion(String),
    Config(String),
    Other(Error),
    RowNotFound,
}

核心错误类型

定义了框架中使用的主要错误类型， 包含了所有可能出现的错误情况。

Variants

Database(Error)

数据库错误

来自 SQLx 的原始数据库错误

Pool(String)

连接池错误

连接池管理相关的错误

Transaction(String)

事务错误

事务处理过程中的错误

Query(String)

查询错误

SQL 查询执行过程中的错误

Conversion(String)

值转换错误

数据类型转换过程中的错误

Config(String)

配置错误

配置相关的错误

Other(Error)

其他错误

未分类的通用错误

RowNotFound

记录未找到错误

查询结果为空时的错误

Implementations

impl Error

pub fn is_not_found(&self) -> bool

检查是否为记录未找到错误

返回 true 如果错误类型为 RowNotFound

pub fn is_unique_violation(&self) -> bool

检查是否为唯一约束违反错误

返回 true 如果错误是由唯一约束违反导致的

pub fn is_foreign_key_violation(&self) -> bool

检查是否为外键约束违反错误

返回 true 如果错误是由外键约束违反导致的

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.