Struct JsonRejection 

pub struct JsonRejection { /* private fields */ }

Rejection returned when JSON deserialization fails.

This rejection provides structured information about the deserialization error, including the path to the failing field when available.

Example

use tower_mcp::extract::JsonRejection;

let rejection = JsonRejection::new("missing field `name`");
assert!(rejection.message().contains("name"));

Implementations

impl JsonRejection

pub fn new(message: impl Into<String>) -> Self

Create a new JSON rejection from a serde error.

pub fn with_path(message: impl Into<String>, path: impl Into<String>) -> Self

Create a JSON rejection with a path to the failing field.

pub fn message(&self) -> &str

Get the error message.

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

Get the path to the failing field, if available.

Trait Implementations

impl Clone for JsonRejection

fn clone(&self) -> JsonRejection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsonRejection

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

Formats the value using the given formatter.

impl Display for JsonRejection

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

Formats the value using the given formatter.

impl Error for JsonRejection

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 JsonRejection

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<JsonRejection> for Error

fn from(rejection: JsonRejection) -> Self

Converts to this type from the input type.