Struct State 

pub struct State<T>(pub T);

状态提取器

用于从应用状态中提取数据。

示例

use wae_https::extract::State;

async fn handler(State(db_pool): State<DatabasePool>) -> String {
    // 使用 db_pool
}

Tuple Fields

0: T

Trait Implementations

impl<T: Clone> Clone for State<T>

fn clone(&self) -> State<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for State<T>

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

Formats the value using the given formatter.

impl<T, S> FromRequestParts<S> for State<T>

where T: Clone + Send + Sync + 'static, S: Deref<Target = T>,

type Error = ExtractorError

提取过程中可能发生的错误

fn from_request_parts( _parts: &RequestParts, state: &S, ) -> Result<Self, Self::Error>

从请求中提取数据