问题描述
use actix_web::{get,post,web,App,HttpResponse,HttpServer,Responder};
use serde::{Deserialize,Serialize};
use serde_json::{json};
use validator::{Validate,ValidationError};
#[derive(Deserialize,Serialize,Validate)]
struct Auth {
#[validate(length(min = 4))]
username: String,password: String,}
#[post("/auth")]
async fn auth(form: web::Json<Auth>) -> Result<serde_json::Value,ValidationError> {
Ok(json!{ "success" })
}
这一直给我这个错误:
error[E0277]: the trait bound `fn(Json<Auth>) -> impl std::future::Future {auth}: Factory<_,_,_>` is not satisfied
--> src/main.rs:77:10
|
77 | async fn auth(form: web::Json<Auth>) -> Result<serde_json::Value,ValidationError> {
| ^^^^ the trait `Factory<_,_>` is not implemented for `fn(Json<Auth>) -> impl std::future::Future {auth}`
我做错了什么?
解决方法
我想通了。将 Result<serde_json::Value,ValidationError>
更改为 HttpResponse
并返回 HttpResponse
中的 json 有效。
#[post("/auth")]
async fn auth(form: web::Json<Auth>) -> HttpResponse {
match form.validate() {
Ok(_) => HttpResponse::Ok().json(json!{ {"success":true}}),Err(e) => HttpResponse::NotAcceptable().body(format!("{}",e))
}
}