Laravel进阶系列笔记--(三)Laravel 快速使用服务提供者

作者：温新

时间：2021-07-05

hi，我是温新，一名PHPer。

服务提供者是Laravel应用启动的中心。服务提供者与容器息息相关，不使用接口单独绑定容器没有任何意义。本篇文章将记录服务提供者的基础使用。

如何快速上手服务提供者的使用是本笔记的目的。

第一步：定义契约接口类

app目录下手动创建Contracts目录

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// app/Contracts/TestContract.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(152, 26, 26)"><?</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">namespace</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">App\Contracts</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 契约接口类</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">interface</span>  <span style="box-sizing: border-box;color: rgb(0, 0, 255)">TestContract</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">say</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">string</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$info</span>):<span style="box-sizing: border-box;color: rgb(0, 0, 0)">string</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

第二步：定义服务实现契约接口类

app目录下手动创建Services目录

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// app/Services/TestService.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(152, 26, 26)"><?</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">namespace</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">App\Services</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">use</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">App\Contracts\TestContract</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 实现契约接口类</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">TestService</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">implements</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">TestContract</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">say</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">string</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$info</span>):<span style="box-sizing: border-box;color: rgb(0, 0, 0)">string</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(0, 0, 0)">dd</span>(<span style="box-sizing: border-box;color: rgb(0, 85, 170)">$info</span> . <span style="box-sizing: border-box;color: rgb(170, 17, 17)">'这里是自如初技术博客'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    }</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

第三步：创建服务提供者

创建服务提供者

php artisan make:provider TestServiceProvider

绑定至服务容器

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// TestServiceProvider.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(152, 26, 26)"><?</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">namespace</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">App\Providers</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">use</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">App\Services\TestService</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">use</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">Illuminate\Support\ServiceProvider</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">TestServiceProvider</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">extends</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">ServiceProvider</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">register</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 方式一</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(170, 85, 0)">/*$this->app->bind('App\Contracts\TestContract', function(){</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span style="box-sizing: border-box;color: rgb(170, 85, 0)">return new TestService();</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(170, 85, 0)">});*/</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 方式二</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$this</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">app</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">bind</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'App\Contracts\TestContract'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'App\Services\TestService'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    }</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">boot</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    }</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

第四步：注册服务提供者

文件位置：config/app.php

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 17, 17)">'providers'</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=></span> [</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 0, 0)">App\Providers\TestServiceProvider</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">],</span>

第五步：测试服务提供者

创建用于测试的控制器

php artisan make:controller TestController

编写控制器方法

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(152, 26, 26)"><?</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">namespace</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">App\Http\Controllers</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">use</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">App\Contracts\TestContract</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">TestController</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">extends</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">Controller</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 方式一</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">test</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">TestContract</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$test</span>)</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$test</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">say</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'www.ziruchu.com'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    }</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

第六步：编写路由

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// web.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">Route</span>::<span style="box-sizing: border-box;color: rgb(0, 0, 0)">get</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'test'</span>, <span style="box-sizing: border-box;color: rgb(170, 17, 17)">'TestController@test'</span>);</span>

第七步：路由访问

根据自己定义的路由来访问。

关于容器简单的演示就到这里。

我是温新

每天进步一点点，就一点点