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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `Handler` trait in crate `actix_web`."><meta name="keywords" content="rust, rustlang, rust-lang, Handler"><title>actix_web::dev::Handler - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script></head><body class="rustdoc trait"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><p class='location'>Trait Handler</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#associated-types">Associated Types</a><div class="sidebar-links"><a href="#associatedtype.Result">Result</a></div><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.handle">handle</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>actix_web</a>::<wbr><a href='index.html'>dev</a></p><script>window.sidebarCurrent = {name: 'Handler', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press S to search, ? for more options…" type="search"><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>&#x2212;</span>]</a></span><a class='srclink' href='../../src/actix_web/handler.rs.html#15-21' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='../index.html'>actix_web</a>::<wbr><a href='index.html'>dev</a>::<wbr><a class="trait" href=''>Handler</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub trait Handler&lt;S&gt;: 'static {
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type <a href='#associatedtype.Result' class="type">Result</a>: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a>;
fn <a href='#tymethod.handle' class='fnname'>handle</a>(&amp;self, req: &amp;<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a>&lt;S&gt;) -&gt; Self::<a class="type" href="../../actix_web/dev/trait.Handler.html#associatedtype.Result" title="type actix_web::dev::Handler::Result">Result</a>;
}</pre></div><div class='docblock'><p>Trait defines object that could be registered as route handler</p>
</div>
<h2 id='associated-types' class='small-section-header'>
Associated Types<a href='#associated-types' class='anchor'></a>
</h2>
<div class='methods'>
<h3 id='associatedtype.Result' class='method'><span id='Result.t' class='invisible'><code>type <a href='#associatedtype.Result' class="type">Result</a>: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a></code></span></h3><div class='docblock'><p>The type of value that handler will return.</p>
</div></div>
<h2 id='required-methods' class='small-section-header'>
Required Methods<a href='#required-methods' class='anchor'></a>
</h2>
<div class='methods'>
<h3 id='tymethod.handle' class='method'><span id='handle.v' class='invisible'><code>fn <a href='#tymethod.handle' class='fnname'>handle</a>(&amp;self, req: &amp;<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a>&lt;S&gt;) -&gt; Self::<a class="type" href="../../actix_web/dev/trait.Handler.html#associatedtype.Result" title="type actix_web::dev::Handler::Result">Result</a></code></span></h3><div class='docblock'><p>Handle request</p>
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</div></div><h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'><h3 id='impl-Handler%3CS%3E' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;F, R, S&gt; Handler&lt;S&gt; for F <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(&amp;<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a>&lt;S&gt;) -&gt; R + 'static,<br>&nbsp;&nbsp;&nbsp;&nbsp;R: <a class="trait" href="../../actix_web/trait.Responder.html" title="trait actix_web::Responder">Responder</a> + 'static,&nbsp;</span></code><a href='#impl-Handler%3CS%3E' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/handler.rs.html#203-213' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='docblock'><p>Handler<S> for Fn()</p>
</div><div class='impl-items'><h4 id='associatedtype.Result-1' class="type"><span id='Result.t-1' class='invisible'><code>type <a href='#associatedtype.Result-1' class="type">Result</a> = R</code></span></h4>
<h4 id='method.handle' class="method"><span id='handle.v-1' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='#method.handle' class='fnname'>handle</a>(&amp;self, req: &amp;<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a>&lt;S&gt;) -&gt; R</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/handler.rs.html#210-212' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4></div><h3 id='impl-Handler%3CS%3E-1' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;S&gt; Handler&lt;S&gt; for <a class="struct" href="../../actix_web/http/struct.NormalizePath.html" title="struct actix_web::http::NormalizePath">NormalizePath</a></code><a href='#impl-Handler%3CS%3E-1' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/helpers.rs.html#86-167' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='associatedtype.Result-2' class="type"><span id='Result.t-2' class='invisible'><code>type <a href='#associatedtype.Result-2' class="type">Result</a> = <a class="struct" href="../../actix_web/struct.HttpResponse.html" title="struct actix_web::HttpResponse">HttpResponse</a></code></span></h4>
<h4 id='method.handle-1' class="method"><span id='handle.v-2' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='#method.handle-1' class='fnname'>handle</a>(&amp;self, req: &amp;<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a>&lt;S&gt;) -&gt; Self::<a class="type" href="../../actix_web/dev/trait.Handler.html#associatedtype.Result" title="type actix_web::dev::Handler::Result">Result</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/helpers.rs.html#89-166' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4></div><h3 id='impl-Handler%3CS%3E-2' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;S:&nbsp;'static, C:&nbsp;'static + <a class="trait" href="../../actix_web/fs/trait.StaticFileConfig.html" title="trait actix_web::fs::StaticFileConfig">StaticFileConfig</a>&gt; Handler&lt;S&gt; for <a class="struct" href="../../actix_web/fs/struct.StaticFiles.html" title="struct actix_web::fs::StaticFiles">StaticFiles</a>&lt;S, C&gt;</code><a href='#impl-Handler%3CS%3E-2' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/fs.rs.html#776-785' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='associatedtype.Result-3' class="type"><span id='Result.t-3' class='invisible'><code>type <a href='#associatedtype.Result-3' class="type">Result</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="struct" href="../../actix_web/dev/struct.AsyncResult.html" title="struct actix_web::dev::AsyncResult">AsyncResult</a>&lt;<a class="struct" href="../../actix_web/struct.HttpResponse.html" title="struct actix_web::HttpResponse">HttpResponse</a>&gt;, <a class="struct" href="../../actix_web/error/struct.Error.html" title="struct actix_web::error::Error">Error</a>&gt;</code></span></h4>
<h4 id='method.handle-2' class="method"><span id='handle.v-3' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='#method.handle-2' class='fnname'>handle</a>(&amp;self, req: &amp;<a class="struct" href="../../actix_web/struct.HttpRequest.html" title="struct actix_web::HttpRequest">HttpRequest</a>&lt;S&gt;) -&gt; Self::<a class="type" href="../../actix_web/dev/trait.Handler.html#associatedtype.Result" title="type actix_web::dev::Handler::Result">Result</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/actix_web/fs.rs.html#779-784' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4></div></div><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
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