Struct JsonConfig

pub struct JsonConfig { /* private fields */ }

Json extractor configuration

use actix_web::{error, web, App, FromRequest, HttpResponse};
use serde::Deserialize;
use actix_web_validator::{Json, JsonConfig};
use validator::Validate;

#[derive(Deserialize, Validate)]
struct Info {
    #[validate(length(min = 3))]
    username: String,
}

/// deserialize `Info` from request's body, max payload size is 4kb
async fn index(info: Json<Info>) -> String {
    format!("Welcome {}!", info.username)
}

fn main() {
    let json_config = JsonConfig::default().limit(4096)
        .content_type(|mime| {  // <- accept text/plain content type
            mime.type_() == mime::TEXT && mime.subtype() == mime::PLAIN
        })
        .error_handler(|err, req| {  // <- create custom error response
            error::InternalError::from_response(err, HttpResponse::Conflict().finish()).into()
        });
    let app = App::new().service(
        web::resource("/index.html")
            .app_data(json_config)
            .route(web::post().to(index))
    );
}

Implementations

impl JsonConfig

pub fn limit(self, limit: usize) -> Self

Change max size of payload. By default max size is 32Kb

pub fn error_handler<F>(self, f: F) -> Self

where F: Fn(Error, &HttpRequest) -> Error + Send + Sync + 'static,

Set custom error handler

pub fn content_type<F>(self, predicate: F) -> Self

where F: Fn(Mime) -> bool + Send + Sync + 'static,

Set predicate for allowed content types

Trait Implementations

impl Clone for JsonConfig

fn clone(&self) -> JsonConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for JsonConfig

fn default() -> Self

Returns the “default value” for a type.