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Json

Struct Json 

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pub struct Json<T>(pub T);
Available on crate features http and json only.
Expand description

A JSON wrapper for request and response bodies.

Wraps a value of type T and serializes it as JSON when used as a response, automatically setting the Content-Type: application/json header.

§Examples

use spin_sdk::http::{Json, Request};
use spin_sdk::http_service;
use serde::Serialize;

#[derive(Serialize)]
struct User { name: String }

#[http_service]
async fn handler(_req: Request) -> impl IntoResponse {
    Json(User { name: "Alice".into() })
}

Tuple Fields§

§0: T

Trait Implementations§

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impl<T> Freeze for Json<T>
where T: Freeze,

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impl<T> RefUnwindSafe for Json<T>
where T: RefUnwindSafe,

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impl<T> Send for Json<T>
where T: Send,

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impl<T> Sync for Json<T>
where T: Sync,

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impl<T> Unpin for Json<T>
where T: Unpin,

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impl<T> UnsafeUnpin for Json<T>
where T: UnsafeUnpin,

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impl<T> UnwindSafe for Json<T>
where T: UnwindSafe,

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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, 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> Same for T

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type Output = T

Should always be Self
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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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V