blocks|key|145840|text|您需要将SongsTableSeeder放入DatabaseSeeder.php文件所在目录下的SongsTableSeeder.php文件中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|145841|并且你需要在你的控制台中运行：|145842|composer+dump-autoload|code-block|syntax|javascript|145843|要生成新的类映射，然后运行：|145844|php+artisan+db:seed|145845|我刚刚测试过了。它在Laravel+5中可以正常工作|145846|entityMap^0|4|G|M|I|1C|K|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|15|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|T|$]]

You need to put <code>SongsTableSeeder</code> into file <code>SongsTableSeeder.php</code> in the same directory where you have your <code>DatabaseSeeder.php</code> file.

And you need to run in your console:

<pre><code>composer dump-autoload
</code></pre>

to generate new class map and then run:

<pre><code>php artisan db:seed
</code></pre>

I've just tested it. It is working without a problem in Laravel 5

blocks|key|2938974|text|我正在运行最新的Laravel+5dev版本，如果您更改了名称空间，则需要像这样调用您的种子类：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2938975|$this->call('\todoparrot\TodolistTableSeeder');|code-block|syntax|javascript|2938976|显然，您需要将todoparrot替换为您指定的名称空间。否则，我会收到原始问题中指出的相同错误。|offset|length|style|CODE|2938977|entityMap^0|0|0|7|A|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I'm running the very latest Laravel 5 dev release, and if you've changed the namespace you'll need to call your seed class like this:

<pre><code>$this-&gt;call('\todoparrot\TodolistTableSeeder');
</code></pre>

Obviously you'll need to replace <code>todoparrot</code> with your designated namespace. Otherwise I receive the same error indicated in the original question.

blocks|key|149826|text|如果我们的CustomTableSeeder和DatabaseSeeder在同一个目录中，我们应该使用如下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|149827|$this->call('database\seeds\CustomTableSeeder');|code-block|syntax|javascript|149828|在我们的DatabaseSeeder文件中；然后会抛出另一个错误：“找不到DB类”，然后我们应该将DB外观添加到我们的CustomTableSeeder文件中，如下所示：|149829|use+Illuminate\Support\Facades\DB;|149830|它对我起作用了！|149831|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

If our CustomTableSeeder is in same directory with DatabaseSeeder we should use like below:

<pre><code>$this-&gt;call('database\seeds\CustomTableSeeder');
</code></pre>

in our DatabaseSeeder File;
then another error will be thrown that says: 'DB Class not found'
then we should add our DB facade to our CustomTableSeeder File like below: 

<pre><code>use Illuminate\Support\Facades\DB;
</code></pre>

it worked for me!

blocks|key|148335|text|我只使用了一个文件，里面有两个类，如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|148336|use+Illuminate\Database\Seeder;
use+Illuminate\Database\Eloquent\Model;
use+App\Lesson;

use+Faker\Factory+as+Faker;

class+DatabaseSeeder+extends+Seeder+{

/**
+*+Run+the+database+seeds.
+*
+*+@return+void
+*/
public+function+run()
{
++++//Lesson::truncate();

++++Model::unguard();

++++$this->call("LessonsTableSeeder");


}

}

class+LessonsTableSeeder+extends+Seeder+{

/**
+*+Run+the+database+seeds.
+*
+*+@return+void
+*/
public+function+run()
{

++++$faker+=+Faker::create();

++++foreach(range(1,30)+as+$index)+{

++++++++Lesson::create(['title'+=>+$faker->sentence(5),+'body'+=>+$faker->paragraph(4)]);

++++}

}

}|code-block|syntax|javascript|148337|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I have used only SINGLE FILE with TWO classes in it following :

<pre><code>use Illuminate\Database\Seeder;
use Illuminate\Database\Eloquent\Model;
use App\Lesson;

use Faker\Factory as Faker;

class DatabaseSeeder extends Seeder {

/**
 * Run the database seeds.
 *
 * @return void
 */
public function run()
{
 //Lesson::truncate();

 Model::unguard();

 $this-&gt;call("LessonsTableSeeder");


}

}

class LessonsTableSeeder extends Seeder {

/**
 * Run the database seeds.
 *
 * @return void
 */
public function run()
{

 $faker = Faker::create();

 foreach(range(1,30) as $index) {

 Lesson::create(['title' =&gt; $faker-&gt;sentence(5), 'body' =&gt; $faker-&gt;paragraph(4)]);

 }

}

}
</code></pre>

blocks|key|149841|text|我遇到了同样的“反射异常”错误。对我来说，解决方案是将类文件从dev复制到服务器。愚蠢的错误，但考虑到我们处理的文件太多，每次都很容易忘记将它们复制到服务器上。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|149842|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had the same "reflection exception" error. The solution was to copy the class file to the server, from dev, for me. dumb mistake, but given how many files we deal with its easy to forget to copy them over to the server every time.

blocks|key|145897|text|我通过这样做解决了这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|145898|145899|复制文件content.|ordered-list-item|145900|Remove文件。|145901|运行命令:+php+artisan+make:seeder。|145902|将文件内容复制回此文件。|145903|145904|这是因为我更改了文件名。我不知道为什么它在改变后不起作用。|145905|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|T|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|U|8|@]|9|@]|A|$]]|$1|J|3|K|5|E|7|V|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

I solved it by doing this:

<ol>
<li>Copy the file content.</li>
<li>Remove file.</li>
<li>Run command: php artisan make:seeder .</li>
<li>Copy the file content back in this file.</li>
</ol>

This happened because I made a change in the filename. I don't know why it didn't work after the change.

blocks|key|148363|text|文件SongsTableSeeder.php应位于database/seeds目录或其子目录中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|148364|您需要运行以下命令：|148365|composer+dump-autoload|code-block|syntax|javascript|148366|然后：|148367|php+artisan+db:seed|148368|或者：|148369|php+artisan+db:seed+--class=SongsTableSeeder|148370|entityMap^0|2|K|P|E|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|15|8|@]|D|@]|E|$]]|$1|S|3|T|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|U|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|V|$]]

File SongsTableSeeder.php should be in database/seeds directory or in its subdirectory.

You need to run:

<pre><code>composer dump-autoload
</code></pre>

and then:

<pre><code>php artisan db:seed
</code></pre>

or:

<pre><code>php artisan db:seed --class=SongsTableSeeder
</code></pre>

blocks|key|2726750|text|SongsTableSeeder.php应在数据库/种子目录中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2726751|控制台命令步骤：|2726752|composer+dump-autoload|code-block|syntax|javascript|2726753|然后：|2726754|php+artisan+cache:clear|2726755|2726756|php+artisan+optimize|2726757|2726758|php+artisan+db:seed|2726759|或者：|2726760|php+artisan+db:seed+--class=SongsTableSeeder|2726761|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|M|3|J|5|6|7|13|8|@]|9|@]|A|$]]|$1|N|3|O|5|F|7|14|8|@]|9|@]|A|$G|H]]|$1|P|3|J|5|6|7|15|8|@]|9|@]|A|$]]|$1|Q|3|R|5|F|7|16|8|@]|9|@]|A|$G|H]]|$1|S|3|T|5|6|7|17|8|@]|9|@]|A|$]]|$1|U|3|V|5|F|7|18|8|@]|9|@]|A|$G|H]]|$1|W|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|X|$]]

SongsTableSeeder.php should be in database/seeds directory 

Console command steps:

<pre><code>composer dump-autoload
</code></pre>

and then:

<pre><code>php artisan cache:clear
</code></pre>

and then:

<pre><code>php artisan optimize
</code></pre>

and then:

<pre><code>php artisan db:seed
</code></pre>

or:

<pre><code>php artisan db:seed --class=SongsTableSeeder
</code></pre>

blocks|key|149892|text|不要忘记，composer+dump-autoload与composer.json的自动加载/类映射部分一起工作。如果您需要更改seeders目录或使用多个目录来存储seeders，请注意这一点。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|149893|"autoload":+{
++++"classmap":+[
++++++"database/seeds",
++++++"database/factories"
++++],
},|code-block|syntax|javascript|149894|entityMap^0|5|M|S|D|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

Do not forgot that the <code>composer dump-autoload</code> works in relation with the autoload 
 / classmap section of <code>composer.json</code>. Take care about that if you need to change seeders directory or use multiple directories to store seeders.

<pre><code>"autoload": {
 "classmap": [
 "database/seeds",
 "database/factories"
 ],
},
</code></pre>

blocks|key|2726786|text|如果您已经从任何其他项目复制了seeders文件，那么您需要运行artisan命令php+artisan+db:seed，否则就可以了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2726787|entityMap^0|15|J|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

If you have copied the seeders files from any other project then you need to run the artisan command <code>php artisan db:seed</code> otherwise it is fine.

blocks|key|2726948|text|我也得到了[ReflectionException]+Class+Seeder+does+not+exist，当我使用composer+dump-autoload时，我在运行它时得到了一个错误的preg_match():+JIT+compilation+failed:+no+more+memory。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2726949|我所做的是在php.ini中将;pcre.jit=1更改为pcre.jit=Off！您可以在您的终端中使用php+--ini找到路径！|BOLD|2726950|我使用的是带有php+7.3的mac！|2726951|entityMap^0|5|1D|1N|M|2P|1G|0|6|7|F|B|T|C|1H|9|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@$9|U|A|V|B|H]|$9|W|A|X|B|C]|$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@]|E|$]]|$1|I|3|J|5|6|7|12|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|L|$]]

i got <code>[ReflectionException] Class Seeder does not exist</code> too and when i use <code>composer dump-autoload</code>, i got an error <code>preg_match(): JIT compilation failed: no more memory</code> when i run it. 

What i did is that i change <code>;pcre.jit=1</code> to <code>pcre.jit=Off</code> in php.ini!
You can find the path by using <code>php --ini</code> in your terminal!

I am using mac with php 7.3! Hope that help any of you guys out there!

blocks|key|2939245|text|您可能指定了.php扩展，但它找不到您的类。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2939246|我在做什么：|2939247|php+artisan+db:seed+--class=RolesPermissionsTableSeeder.php|code-block|syntax|javascript|2939248|什么解决了我的问题:我在做什么：|2939249|php+artisan+db:seed+--class=RolesPermissionsTableSeeder|2939250|entityMap^0|6|4|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

You probably specify the <code>.php</code> extension and It don't found your class.

What I was doing :

<pre><code>php artisan db:seed --class=RolesPermissionsTableSeeder.php
</code></pre>

What solved my problem :
What I was doing :

<pre><code>php artisan db:seed --class=RolesPermissionsTableSeeder
</code></pre>

blocks|key|2939331|text|如果您迁移到Laravel+8，则必须向seeders类添加一个namespace：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2939332|<?php

namespace+Database\Seeders;

...|code-block|syntax|javascript|2939333|接下来，在composer.json文件中，从autoload部分删除classmap块，并添加新的命名空间类目录映射：|2939334|"autoload":+{
++++"psr-4":+{
++++++++"App\\":+"app/",
++++++++"Database\\Seeders\\":+"database/seeds/"
++++}
},|2939335|最后，做一个composer+dump-autoload。|2939336|欲了解更多信息，请访问：https://laravel.com/docs/8.x/upgrade#seeder-factory-namespaces|2939337|entityMap|0|LINK|mutability|MUTABLE|url|https://laravel.com/docs/8.x/upgrade#seeder-factory-namespaces^0|6|9|K|7|W|9|0|0|5|D|N|8|Z|8|0|0|6|M|0|C|1Q|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]|$9|15|A|16|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|18|8|@$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|1F|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1G|8|@$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1J|8|@]|D|@$9|1K|A|1L|1|1M]]|E|$]]|$1|S|3|-4|5|6|7|1N|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

If you migrated to <code>Laravel 8</code>, you have to add a <code>namespace</code> to the <code>seeders</code> class:
<pre><code>&lt;?php

namespace Database\Seeders;

...
</code></pre>
Next, in your <code>composer.json</code> file, remove <code>classmap</code> block from the <code>autoload</code> section and add the new namespaced class directory mappings:
<pre class="lang-js prettyprint-override"><code>&quot;autoload&quot;: {
 &quot;psr-4&quot;: {
 &quot;App\\&quot;: &quot;app/&quot;,
 &quot;Database\\Seeders\\&quot;: &quot;database/seeds/&quot;
 }
},
</code></pre>
An finally, do a <code>composer dump-autoload</code>.
For more information:
<a href="https://laravel.com/docs/8.x/upgrade#seeder-factory-namespaces" rel="noreferrer">https://laravel.com/docs/8.x/upgrade#seeder-factory-namespaces</a>

When I run php artisan db:seed I am getting the following error: 

<pre><code>[ReflectionException] Class SongsTableSeeder does not exist
</code></pre>

What is going on?

My DatabaseSeeder class:

<pre><code>&lt;?php

use Illuminate\Database\Seeder;
use Illuminate\Database\Eloquent\Model;

class DatabaseSeeder extends Seeder {

 /**
 * Run the database seeds.
 *
 * @return void
 */
 public function run()
 {
 Model::unguard();

 $this-&gt;call('SongsTableSeeder');
 }

}
</code></pre>

My SongsTableSeeder class:

<pre><code>&lt;?php

// Composer: "fzaninotto/faker": "v1.4.0"
use Faker\Factory as Faker;
use Illuminate\Database\Seeder;
use DB;

class SongsTableSeeder extends Seeder {

 public function run()
 {
 $faker = Faker::create();
 $songs = [];
 foreach(range(1, 10) as $index)
 {
 $songs[] = ['title' =&gt; $faker-&gt;words(rand(1,4))];
 }

 DB::table('songs')-&gt;insert($songs);

 }

}
</code></pre>

Laravel 5 - artisan seed [ReflectionException] Class SongsTableSeeder does not exist

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当我运行php artisan db:seed时，我得到以下错误：[ReflectionException] Class SongsTableSeeder does not exist怎么一回事？我的DatabaseSeeder类：<?phpuse Illuminate\Database\Seeder;use Illu...

问Laravel 5-工匠种子[ReflectionException]类SongsTableSeeder不存在
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