Context

Struct Context 

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pub struct Context { /* private fields */ }
Expand description

包含了每次请求的所有信息以及用户自定义信息

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impl Context

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pub fn param<T>(&self, name: &str) -> Option<T>
where T: FromStr, <T as FromStr>::Err: Debug,

获取路由规则中的命名参数值

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pub fn query<T>(&self, name: &str) -> Option<T>
where T: FromStr, <T as FromStr>::Err: Debug,

获取query参数值

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pub fn header(&self, name: &str) -> Option<String>

获取请求头中的参数值

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pub fn form<T>(&self, name: &str) -> Option<T>
where T: FromStr, <T as FromStr>::Err: Debug,

获取 form 表单提交值

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pub fn data<T>(&self, name: &str) -> Option<T>
where T: FromStr, <T as FromStr>::Err: Debug,

获取自定义数据,前面的处理器可以传给后面的处理器 通过 set_data 设置

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pub fn set_data<T>(&mut self, name: &str, data: T)
where T: FromStr + Display, <T as FromStr>::Err: Debug,

获取 header 中的参数值

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pub fn ip(&self) -> String

返回客户端的ip+端口

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impl Context

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pub fn skip_before_filters(&mut self)

在前置过滤器中调用才有效,调用后会跳过后面的所有前置过滤器

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pub fn is_skip_before_filters(&self) -> bool

判断是否要跳过剩下的前置过滤器

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pub fn skip_after_filters(&mut self)

调用后会跳过后面的所有后置过滤器,在请求处理函数和后置过滤器中调用才有效

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pub fn is_skip_after_filters(&self) -> bool

判断是否要跳过剩下的后置过滤器

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pub fn is_finished(&self) -> bool

是否处理完毕

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impl Context

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pub fn set_header(&mut self, name: &str, value: &str)

设置响应头信息

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pub fn string(&mut self, data: &str)

返回html格式字符串

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pub fn text(&mut self, data: &str)

返回纯文本格式字符串,不会解析html标签

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pub fn json<T>(&mut self, json: T)
where T: Serialize,

返回json格式数据 调用格式

 c.json(json!({"name":"admin","age":18}));

如果实现了 Serialize Trait 的话可以用下面的方式调用

let p = Person{name:"admin", age:18};
c.json(&p);

Trait Implementations§

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impl Default for Context

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fn default() -> Context

Returns the “default value” for a type. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ErasedDestructor for T
where T: 'static,