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An article explaining how to export PDF with Laravel-snappy
- 藏色散人forward
- 2021-08-30 15:27:292966browse
The following tutorial column from Laravel will introduce to you how to use Laravel-snappy to export PDF. I hope it will be helpful to friends in need!
Preface
There are many articles on how to use Laravel-snappy in the forum, but many of them only focus on installation and basic examples. There is no explanation of usage, and no answers to some questions and doubts, so I will sort it out here and treat it as a record.
Installation
Take ubuntu as an example
1. Execute and install wkhtmltopdf:
composer require h4cc/wkhtmltopdf-amd64 0.12.x composer require h4cc/wkhtmltoimage-amd64 0.12.x
As the name suggests, wkhtmltopdf and wkhtmltopdf are installed respectively. wkhtmltoimage.
2. Copy wkhtmltopdf to the directory of the ubuntu executable command
sudo cp vendor/h4cc/wkhtmltoimage-amd64/bin/wkhtmltoimage-amd64 /usr/local/bin/ sudo cp vendor/h4cc/wkhtmltopdf-amd64/bin/wkhtmltopdf-amd64 /usr/local/bin/ //并使其可执行： sudo chmod +x /usr/local/bin/wkhtmltoimage-amd64 sudo chmod +x /usr/local/bin/wkhtmltopdf-amd64
3. Install laravel-snappy
composer require barryvdh/laravel-snappy
4. Add ServiceProvider to config/app.php In the providers array
Barryvdh\Snappy\ServiceProvider::class
5. Add Facades to the aliases array in config/app.php
'PDF' => Barryvdh\Snappy\Facades\SnappyPdf::class, 'SnappyImage' => Barryvdh\Snappy\Facades\SnappyImage::class,
6. Execute the generated configuration file
php artisan vendor:publish --provider="Barryvdh\Snappy\ServiceProvider"
You can see The default configuration file is config/snappy.php:
return [
'pdf' => [
'enabled' => true,
'binary' => env('WKHTML_PDF_BINARY', '/usr/local/bin/wkhtmltopdf'),
'timeout' => false,
'options' => [],
'env' => [],
],
'image' => [
'enabled' => true,
'binary' => env('WKHTML_IMG_BINARY', '/usr/local/bin/wkhtmltoimage'),
'timeout' => false,
'options' => [],
'env' => [],
],
];Note that there is a pit here. The default binary configuration is /usr/local/bin/wkhtmltopdf and /usr/local/bin/wkhtmltoimage. In the first When used for the first time, an error will be reported that /usr/local/bin/wkhtmltopdf does not exist. This is because under the Linux system, the real paths and names of wkhtmltopdf and wkhtmltoimage are: /usr/local/bin/wkhtmltopdf-amd64 and /usr/ local/bin/wkhtmltoimage-amd64.
Therefore, the configuration information needs to be modified to:
'pdf' => [
...
'binary' => env('WKHTML_PDF_BINARY', '/usr/local/bin/wkhtmltopdf-amd64'),
...
],
'image' => [
...
'binary' => env('WKHTML_IMG_BINARY', '/usr/local/bin/wkhtmltoimage-amd64'),
...
],Start using
//使用方法1 $pdf = \PDF::loadView('welcome', $data); return $pdf->download('welcome.pdf'); //使用方法2 $html = '<html><head><meta charset="utf-8"></head><h1>订单id</h1><h2>12346546</h2></html>'; $pdf = \PDF::loadHTML($html); return $pdf->inline();
Many blogs have not mentioned it, usage method 1 , the following error will be reported:
The exit status code '1' says something went wrong: stderr: "Loading pages (1/6) [> ] 0% [======> ] 10% QSslSocket: cannot resolve CRYPTO_num_locks QSslSocket: cannot resolve CRYPTO_set_id_callback QSslSocket: cannot resolve CRYPTO_set_locking_callback QSslSocket: cannot resolve sk_free QSslSocket: cannot resolve sk_num QSslSocket: cannot resolve sk_pop_free QSslSocket: cannot resolve sk_value QSslSocket: cannot resolve SSL_library_init QSslSocket: cannot resolve SSL_load_error_strings QSslSocket: cannot resolve SSLv3_client_method QSslSocket: cannot resolve SSLv23_client_method QSslSocket: cannot resolve SSLv3_server_method QSslSocket: cannot resolve SSLv23_server_method QSslSocket: cannot resolve X509_STORE_CTX_get_chain QSslSocket: cannot resolve OPENSSL_add_all_algorithms_noconf QSslSocket: cannot resolve OPENSSL_add_all_algorithms_conf QSslSocket: cannot resolve SSLeay QSslSocket: cannot call unresolved function CRYPTO_num_locks QSslSocket: cannot call unresolved function CRYPTO_set_id_callback QSslSocket: cannot call unresolved function CRYPTO_set_locking_callback QSslSocket: cannot call unresolved function SSL_library_init QSslSocket: cannot call unresolved function SSLv23_client_method QSslSocket: cannot call unresolved function sk_num [==================> ] 31% QSslSocket: cannot call unresolved function SSLv23_client_method QSslSocket: cannot call unresolved function SSL_library_init [============================================================] 100% Counting pages (2/6) [============================================================] Object 1 of 1 Resolving links (4/6) [============================================================] Object 1 of 1 Loading headers and footers (5/6) Printing pages (6/6) [> ] Preparing [============================================================] Page 1 of 1 Done Exit with code 1 due to network error: UnknownNetworkError QSslSocket: cannot call unresolved function CRYPTO_num_locks QSslSocket: cannot call unresolved function CRYPTO_set_id_callback QSslSocket: cannot call unresolved function CRYPTO_set_locking_callback " stdout: "" command: /usr/local/bin/wkhtmltopdf-amd64 --lowquality '/tmp/knp_snappy612c3edcdfc855.21787864.html' '/tmp/knp_snappy612c3edcdfce49.80482557.pdf'.
Execution:
sudo apt-get update sudo apt install libssl1.0-dev
The repair is completed and the welcome page is exported.
If you use the save () method to save, it will be saved to the /public folder by default. If the file name is the same, the second save will prompt that the file already exists.
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