Rust??Actix Web?œ??e?A?v???̈ꗗ??ʂ??J?????悤?FWeb?A?v???????Ŋw?ԁA????Ŗ𗧂?Rust????i2?j

?@?쐬?????v???W?F?N?g?ɂ?"Hello, world!"??\??????R?[?h???u????Ă??邾???Ȃ̂ŁA??????폜???ă??X?g1?̃R?[?h?Œu???????܂??B????́Alocalhost?̃|?[?g8000??HTTP???N?G?X?g??҂??󂯂āAURL?p?X?Ƀ??[?g?u/?v???w?肳?ꂽ??"Hello, Actix Web!"?ƕԂ??????̃R?[?h?ɂȂ?܂??B

use std::io::Result;
use actix_web::{App, HttpServer, Responder, HttpResponse, get};
#[get("/")]						(1)
async fn index() -> impl Responder {			(2)
    HttpResponse::Ok().body("Hello, Actix Web!")	(3)
}
#[actix_rt::main]					(4)
async fn main() -> Result<()> {				(5)
    HttpServer::new(|| {				(6)
        App::new()
            .service(index)
    })
    .bind("127.0.0.1:8000")?.run().await		(7)
}

?@cargo run?R?}???h?Ńr???h???Ď??s???܂??B?G???[?̂Ȃ????Ƃ??m?F???āAWeb?u???E?U?Łuhttps://localhost:8000/?v???J???Ă݂܂??B?}2?̂悤?ɕ\???????΃A?v????{?`?̍쐬?͐????ł??B

?}2?@Actix Web?ɂ??V???v????Web?A?v??

Web?A?v???̃R?[?h??ǂ?ł݂?

?@???X?g1?̓V???v???ȃR?[?h?ł????AActix Web?𗘗p???邽?߂̊?{?I?ȃ??[???????ڂł??B?܂??A?d?v?Ȃ̂̓??[?e?B???O???[???ƃn???h???[?֐??ł??BActix Web?ł́A???N?G?X?g???ꂽHTTP???\?b?h??URL?p?^?[???ƃn???h???[?֐??̑Ή???ێ????Ă??āA??v????֐????Ăяo???Ƃ????̂???{?ł??i?}3?j?B????𓥂܂??āA???X?????Ȃ?܂??????ԂɌ??Ă????܂??傤?B

?}3?@???[?e?B???O???[???ƃn???h???[?֐?

?@?i1?j?́A???[?e?B???O???[?????w?肷?钍?߂ł??B?????֐????AHTTP???\?b?h??GET?AURL?p?X?????[?g?u/?v?ł???ꍇ?ɌĂяo?????n???h???[?֐??ł??邱?Ƃ𖾎????܂??B???[?e?B???O???[???̎w????@?ɂ́A???߂̑??Ɋ?‚??̕??@?ƃp?^?[????????܂????A????ȍ~?œ??e?A?v?????g?????Ȃ??珇???Љ?Ă????܂??B

?@?i2?j?̓n???h???[?֐??̒?`?ł???Aasync?L?[???[?h???t??????Ă???ʂ?񓯊??֐??ƂȂ?܂??BActix Web???񓯊????????T?|?[?g????̂ŁA???̂悤??async??t???邾???Ŕ񓯊??֐??ƂȂ?܂??B?߂?l??impl Responder?́AResponder?g???C?g???????????^?̒l??߂??A?Ƃ????Ӗ??ɂȂ?܂??B

?@?i3?j?????̖߂?l?ł??BHttpResponse?́AResponder?g???C?g???????????\???̂ł??BHTTP???X?|???X???AHTTP?X?e?[?^?XOK?iOk???\?b?h?j?Ń??X?|???X?{?f?B?[?ibody???\?b?h?j??"Hello, Actix Web!"?Ƃ??Ė߂??A?Ƃ????Ӗ??ɂȂ?܂??Bbody???\?b?h???Ԃ??̂͂????܂ł????X?|???X?{?f?B?[?ł???AHTML???^?O?Ƃ͖??֌W?Ȃ̂Œ??ӂ??Ă????????B?Ȃ??A???̗??index?֐??͈??????󂯎??܂??񂪁A?Ⴆ?Έ?????HttpRequest?̃C???X?^???X??n???ƁA???N?G?X?g?p?????[?^?[?Ȃǂɉ????????????”\?ł??B???̂???????A????ȍ~?ŏЉ?Ă????܂??B

?@?i4?j?́Amain?֐???actix-rt?ɂ???Ď??s?????񓯊??֐??ł??邱?Ƃ????????߂ł??BActix Web?????ڌĂяo???֐??ɂ͂??̒??߂??K?v?ł??B

?@?i5?j?͂???main?֐??ł????A?񓯊??֐??Ƃ??邽?߂ɂ??????async?L?[???[?h??t?????܂??B?߂?l??std::io::Result?́A?i7?j?ŌĂяo???Ă???bind???\?b?h?̃G???[???Ăяo?????ɈϏ????邽?߂ł??Bbind???\?b?h?̌Ăяo???Ɂu??v???t???Ă??邱?Ƃɒ??ӂ??Ă????????B

?@?i6?j????́AHTTP?T?[?o?ł???HttpServer?̃C???X?^???X?????A?ҋ@????IP?A?h???X?ƃ|?[?g?̎w??ibind???\?b?h?j?A?T?[?o?̊J?n?irun???\?b?h?j?ƂȂ?܂??B?Ō??await?͔񓯊??Ăяo???Ƃ???w??ł??B

?@HttpServer?̃R???X?g???N?^?ɓn???Ă???App?I?u?W?F?N?g?́A?????ʂ?Web?A?v???P?[?V?????̂??߂̃I?u?W?F?N?g?ł???A???̏ꍇ?͐??????service???\?b?h??index?֐???o?^????A?Ƃ????Ӗ??ɂȂ?܂??B?A?v???P?[?V?????ɐV???ȃ??[?g??o?^????ꍇ?ɂ́Aservice???\?b?h?????\?b?h?`?F?[???ł‚Ȃ??ł????܂??B?Ȃ??A???[?g?̓o?^?ɂ???‚????@??????̂ŁA???????????ȍ~?ŏ????Љ?Ă????܂??B

?@Actix Web?̃A?v???̊?{?`?́A???[?e?B???O???[???̓o?^?ƁA?Ăяo?????n???h???[?֐??̒?`?ł??邱?Ƃ????????Ă????܂??傤?B

???e?A?v???̍쐬

?@????????Aactix-sample?????Ƃɂ??????e?A?v?????\?z???Ă????܂??Bactix-posts?v???W?F?N?g??V???ɍ쐬???Aactix-web?N???[?g??actix-rt?N???[?g???v???W?F?N?g?̈ˑ??֌W?ɉ????āAsrc/main.rs?t?@?C????actix-sample????R?s?[???Ă????Ă????????B?ȍ~?Aactix-posts?ɃJ?????g?t?H???_???ړ????????̂Ƃ??ĉ????i?߂܂??B

???K?[?????????Ă???

?@?g???u???V???[?e?B???O?ɔ????āA???K?[?????炩???ߑg?ݍ???ł????܂??傤?B???K?[?Ƃ??ẮARust?̕W???I?ȃ??K?[?ł???log?ƁAActix Web?Ƀ~?h???E?F?A?Ƃ??ėp?ӂ???Ă???Logger???g???܂??B???????g?????߂ɁAlog?N???[?g?Aenv_logger?N???[?g???ȉ??̃R?}???h?Ńv???W?F?N?g?̈ˑ??֌W?ɉ????Ă????????B

% cargo add log env_logger

?@?????āAsrc/main.rs?t?@?C???Ƀ??X?g2?̂悤??use????ύX?A?lj????Amain?֐??ɃR?[?h??NjL???܂??B

?c???c
use actix_web::{App, HttpServer, Responder, HttpResponse, get, 
    middleware::Logger};
use env_logger::Env;
?c???c
#[actix_rt::main]
async fn main() -> Result<()> {
    env_logger::init_from_env(Env::default().default_filter_or("info"));	(1)
    HttpServer::new(|| {
        App::new()
            .service(index)
            .wrap(Logger::default())	(2)
    })
    .bind("127.0.0.1:8000")?.run().await
}

?@?i1?j?̓??K?[?̐ݒ?ŁA?f?t?H???g?̃??O???x???̎w??ł??B???O???x???Ƃ́A?d?v?x??p?r?ɉ????????O?o?͂̊?ŁARust??log?N???[?g?ł͏d?v?x?̍???????error?Awarn?Ainfo?Adebug?Atrace??5?i?K???w??ł??܂??B?????ł́A??ʓI?ȏ??ɑ???????info???w?肵?Ă??܂??B

?@?i2?j??wrap???\?b?h?́ALogger?~?h???E?F?A???A?v???P?[?V?????ɒlj????܂??B???̒lj????@???ƁA?S?Ẵ??N?G?X?g?ɑ΂??ă??O?o?͂??K?p????܂??B

?@?A?v???ւ̈?ʂ?̎??????I?????????_?ŁAURL?p?X?u/posts?v??Web?u???E?U????A?N?Z?X????ƁA?ȉ??̂悤?Ƀ??O???^?[?~?i???ɏo?͂???܂??B

[2023-10-14T23:14:26Z INFO  actix_server::builder] starting 16 workers
[2023-10-14T23:14:26Z INFO  actix_server::server] Actix runtime found; starting in Actix runtime
[2023-10-14T23:14:34Z INFO  actix_posts::handler] Called index		(1)
[2023-10-14T23:14:34Z INFO  actix_web::middleware::logger] 127.0.0.1 "GET /posts HTTP/1.1" 200 1353 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36" 0.001263
	(2)

?@?i1?j?̓n???h???[?֐????ŔC?ӂŏo?͂??Ă??镶????A?i2?j?̓??N?G?X?g?̏????I???ɂ???Ď????ŏo?͂????s?ł??B???N?G?X?g?????y?[?W?????[?e?B???O???[???̂?????ɂ??}?b?`???Ȃ??Ɓi1?j?i2?j?͏o?͂???܂??񂵁A?i1?j?̃n???h???[?֐??Ɓi2?j??"GET /posts HTTP/1.1"???????z?肵???Ή??ƈقȂ??Ă??邩??????܂???B???[?e?B???O???[????lj???????ҏW?????肵?????A?v???悤?Ƀn???h???[?֐????Ăяo????Ȃ??Ƃ????ꍇ?ɂ́A???̂悤?Ƀ??O?????p???Ċm?F???܂??傤?B

?w?b?_?ƃt?b?^???쐬???Ă???

?@?S?Ẵy?[?W?ɕ\???????w?b?_?ƃt?b?^???A???ʃR???e???c?Ƃ??Ă??炩???ߏ??????Ă????A?e?y?[?W?̐??????Ɏ?荞?ނ悤?ɂ??܂??B????ɂ??A?n???h???[?֐??ɋ??ʕ??𐶐?????R?[?h?𒀈ꏑ???Ȃ??ōς݂܂????A?y?[?W?f?U?C???̓??ꂪ?e?ՂɂȂ?܂??B

?@?w?b?_?iheader.html?j?̓??e???^?O?ƃA?v???̃^?C?g???A?t?b?^?ifooter.html?j?̓??e?͒??쌠?̏??ł??B?f?U?C???̒??????e?ՂɂȂ?悤?ɁAWeb?f?U?C???t???[?????[?NBootstrap??g?ݍ???ł??܂??B

?@?t?@?C???́A?v???W?F?N?g???[?g??static?t?H???_???쐬???āA?\?[?X?t?@?C???Ƃ͕ʂɔz?u???܂??B?Ȃ??A?????̃t?@?C???͎????œK?p?????킯?ł͂Ȃ??A?n???h???[?֐????t?@?C????ǂݍ??݁A?R???e???c?̈ꕔ?Ƃ??ė??p????Ƃ??????Ƃɒ??ӂ??Ă????????i?}4?j?B?t?@?C?????e?̌f?ڂ͊??????܂??̂ŁA?z?z?T???v?????Q?Ƃ??Ă????????B

?}4?@?y?[?W?R???e???c?̐???

?ꗗ?\???̃n???h???[?֐???p?ӂ???

?@?܂??́A?S???e???ꗗ?\??????n???h???[?֐??????????Ă݂܂??傤?BWeb?A?v???ɂǂ̂悤?ȏ?????p?ӂ??邩?ɂ????܂????A?n???h???[?֐??͐????????Ȃ?̂???ʓI?Ȃ̂ŁA?ώG????????邽?߂ɕʃN???[?g???쐬???Ĕz?u???邱?Ƃɂ??܂??B?v???W?F?N?g??src?t?H???_?ɐV????handler.rs?t?@?C?????쐬???A?????Ɉꗗ?\???̃n???h???[?֐?index??main.rs?t?@?C??????ړ??A???X?g3?̂悤?ɏ????????܂??B

use log::info;
use actix_web::{Responder, HttpResponse, web, get, post};
#[get("/posts")]				(1)
pub async fn index() -> impl Responder {	(2)
    info!("Called index");			(3)
    HttpResponse::Ok().body("Called index")	(4)
}

?@?i1?j?̓??[?e?B???O???[???̕ύX?ł??B?S???e?̈ꗗ?\???́AURL?p?X?u/posts?v?Ƃ??܂??i???̃??[?e?B???O???[???ƃn???h???[?֐??́A????ɉ??߂ďЉ?܂??j?B?i2?j??main?N???[?g????Q?Ƃł???悤??pub?L?[???[?h???֐??ɕt?????Ă??܂??B?i3?j??info???x???Ńn???h???[?֐????Ăяo???ꂽ???Ƃ????????O?o?͂ł??B?i4?j?͉??̃R???e???c?ŁAindex?֐????Ă΂ꂽ???Ƃ?Ԃ??????̂??̂ƂȂ??Ă??܂??B???ۂ̈ꗗ?\???́A???ƂŃR?[?h?̐????ƂƂ??ɏЉ?܂??B

?n???h???[?֐???o?^????

?@?쐬?????n???h???[?֐????A?A?v???P?[?V?????ɓo?^????R?[?h?????X?g4?̂悤?ɒNjL?A?C?????܂??B

?c???c
mod handler;				(1)
?c???c
App::new()
    .service(handler::index)		(2)
    .wrap(Logger::default())
?c???c

?@?i1?j?́Ahandler.rs?t?@?C?????̊֐????Ăяo?????߂ɕK?v??mod???ł??B????ɂ??A?i2?j?̂悤??handler.rs?t?@?C???Œ?`?????֐???service???\?b?h?ɗ^???邱?Ƃ??ł??܂??B

?@?????ŃA?v???P?[?V???????r???h?A???s???AWeb?u???E?U?Łuhttps://localhost:8000/posts?v???J???Ă݂܂??B?}5?̂悤?ɕ\???????΃??[?g?̕ύX??N???[?g?̕????͐????ł??B

?}5?@?S???e?̈ꗗ?\???̉????

?f?[?^?\?[?X?ƃf?[?^?????N???[?g??p?ӂ???

?@???e?A?v???̃f?[?^?\?[?X?́A?{???ł????SQLite??MySQL?Ȃǂ̃f?[?^?x?[?X???g???????Ƃ???ł????A?????Actix Web?̎g?????ɏW?????邽?߁A?ÓI??JSON?f?[?^?t?@?C??data.json??p?ӂ??āA??????Q?ƁA?X?V????Ƃ????悤?Ɋȗ??????܂??B?t?@?C?????e?̌f?ڂ͊???????̂ŁA?z?z?T???v?????Q?Ƃ??Ă????????i?S?????????e??data_base.json?t?@?C?????܂߂Ă???̂ŁA???e?̕????ɗ??p?ł??܂??j?B?Ȃ??ARust?ɂ?????f?[?^?x?[?X?̗??p?ɂ‚??ẮA?{?A?ڂ̌㔼?ŏЉ??\??ł??B

?@?f?[?^?\?[?X?̃R?[?h???A?ʃN???[?g?Ƃ??܂??Bsrc?t?H???_??handler?t?H???_???쐬???Ahandler?̉??ʃ??W???[???Ƃ???data.rs?t?@?C???????X?g5?̓??e?Ŕz?u???܂??B

use std::fs;
use serde::{Serialize, Deserialize};				(1)
#[derive(Serialize, Deserialize, Debug, Clone)]			(2)
pub struct Message {
    pub id: i32,                // ID  
    pub posted: String,         // ???e????
    pub sender: String,         // ???e?Җ?
    pub content: String,        // ???e???e
}
static DATA_FILENAME: &str = "data.json";			(3)
pub fn get_all() -> Vec<Message> {				(4)
    let file = fs::read_to_string(DATA_FILENAME).unwrap();
    let mut json_data: Vec<Message> = serde_json::from_str(&file).unwrap();
    json_data.sort_by(|a, b| b.posted.cmp(&a.posted));
    json_data
}

?@????́AJSON?t?@?C?????f?[?^?\?[?X?Ƃ??Ďg???ꍇ?̍ŏ??\???ƂȂ??Ă??܂??B?֐??Ƃ??ẮA?S???e?f?[?^???擾????get_all?֐??݂̂????????Ă??܂??B

?@?i1?j??serde?N???[?g?̍\???̂??g??use???ł??Bserde?́ARust?ɂ?????JSON?f?[?^???g???ۂ̒?ԃN???[?g?iJSON SerDe???C?u?????j?ŁA?i2?j?̂悤?ɍ\???̂𒍎߂??ăV???A???C?Y?iSerialize?j??f?V???A???C?Y?iDeserialize?j?Ȃǂ̋@?\??񋟂??܂??i?????ł͍\???̂̃N???[?????”\?ɂ???Clone???w?肵?Ă??܂??j?B?Ȃ??A?i2?j?͓??e?f?[?^?\????Message?̒?`?ł???Apub?L?[???[?h??t?L???ď?ʃ??W???[??????Q?Ƃł???悤?ɂ??Ă??܂??B?e?t?B?[???h?̖????̓R?????g???Q?Ƃ??Ă????????B

?@?i3?j?́A?f?[?^?t?@?C???̖??O??ÓI?????񃊃e?????Ƃ??Ē?`???Ă??܂??B

?@?i4?j?́A?S???e?f?[?^???擾????֐??{?̂ł??B?t?@?C??????ǂݍ???JSON????????Aserde_json::from_str???\?b?h??Message?^?̃x?N?^?[?Ƃ??Ď擾???܂??B???̍ۂɁAserde?ɂ??f?V???A???C?Y?????s????Ă??܂??B?????āAsort_by???\?b?h?œ??e?????̍~???ŕ??ёւ??āA?֐??̖߂?l?Ƃ??Ă??܂??B

?@?????ŁAdata.rs?t?@?C???Ŏg?p????serde?N???[?g??serde_json?N???[?g???A?v???W?F?N?g?̈ˑ??֌W?Ɉȉ??̃R?}???h?Œlj????Ă????????B?܂??A?lj????Cargo.toml?t?@?C???iserde?s?j???Aderive???߂??g?????߂Ƀ??X?g6?̂悤?ɏC?????Ă????????B

% cargo add serde serde_json

[dependencies]
?c???c
serde = {version = "1.0.188", features = ["derive"] }
serde_json = "1.0.107"

?ꗗ?\???̃n???h???[?֐???????????

?@?????ŁA?n???h???[?֐???S???e?f?[?^?̎擾?ƕ\???ɑΉ????????̂ɏC?????܂??Bhandler.rs?t?@?C????index?֐??????X?g7?̂悤?ɏC?????܂??B

?c???c
mod data;					(1)
#[get("/posts")]
pub async fn index() -> impl Responder {
    let posts = data::get_all();			(2)
    let mut body_str: String = "".to_string();			(3)
    body_str += include_str!("../static/header.html");
    for item in &posts {				(4)
        body_str += &format!("<div><a href=\"/posts/{}\">", item.id);
        body_str += &format!("<div>{} {}</div>", item.sender, item.posted);
        body_str += &format!("<div><p>{}</p></div>", 
            item.content.replace("\n", "<br />"));
        body_str += "</a></div>";
    }
    body_str += "<div><a href=\"/posts/new\">?쐬</a></div>";
    body_str += include_str!("../static/footer.html");
    HttpResponse::Ok().content_type("text/html; charset=utf-8").body(body_str)	(5)
}
?c???c

?@???X?g7?̐????ł??B???̃R?[?h?̏??????e?́A?w?b?_??t?b?^?̃t?@?C???Ǝ擾?????S???e?f?[?^????HTML?𐶐????邱?Ƃł??B

?@?i1?j?́A?f?[?^?\?[?X?̃??W???[???ł???data?̎?荞?݂̎w??ł??B

?@?i2?j?ł́A???݂̑S???e?f?[?^??Message?^?̃x?N?^?[?Ŏ擾???Ă??܂??B

?@?i3?j????́A???X?|???X?{?f?B?[?Ƃ??镶??????쐬???Ă??܂??B???炩???ߗp?ӂ???HTML?t?@?C?????Ainclude_str!?}?N???œǂݍ???ŕ?????ɒlj????Ă????܂??B???̃}?N???́A?????Ŏw?肳???t?@?C???̓??e???u&'static str?v?Ƃ??Ă??̏?ɓW?J???܂??B????ɂ??A?O???̃t?@?C?????R?[?h?ɖ??ߍ??ނ??Ƃ??ł??܂??B

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