數據庫配置：根目錄下/.env，

?

單個數據庫

.env配置

DB_CONNECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=shop DB_USERNAME=root DB_PASSWORD=root DB_PREFIX=ds_

config/database.php

'mysql' => ['driver' => 'mysql','host' => env('DB_HOST', '127.0.0.1'),'port' => env('DB_PORT', '3306'),'database' => env('DB_DATABASE', 'forge'),'username' => env('DB_USERNAME', 'forge'),'password' => env('DB_PASSWORD', ''),'unix_socket' => env('DB_SOCKET', ''),'charset' => 'utf8mb4','collation' => 'utf8mb4_unicode_ci','prefix' => env('DB_PREFIX', ''),'prefix_indexes' => true,'strict' => true,'engine' => null,'options' => array_filter([PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),]),

?

控制器取數據

public function index(){$res = DB::table('goods')->get();print_r($res);}

?

多個數據庫

.env配置

DB_WRITE_CONNECTION=read DB_WRITE_HOST=192.168.0.132 DB_WRITE_PORT=3306 DB_WRITE_DATABASE=shop DB_WRITE_USERNAME=root DB_WRITE_PASSWORD=root DB_WRITE_PREFIX=st_DB_READ_CONNECTION=read DB_READ_HOST=192.168.0.134 DB_READ_PORT=3306 DB_READ_DATABASE=shop DB_READ_USERNAME=root DB_READ_PASSWORD=root DB_READ_PREFIX=st_

config/database.php

'mysql' => ['driver' => 'mysql','host' => env('DB_HOST', '127.0.0.1'),'port' => env('DB_PORT', '3306'),'database' => env('DB_DATABASE', 'forge'),'username' => env('DB_USERNAME', 'forge'),'password' => env('DB_PASSWORD', ''),'unix_socket' => env('DB_SOCKET', ''),'charset' => 'utf8mb4','collation' => 'utf8mb4_unicode_ci','prefix' => env('DB_PREFIX', ''),'prefix_indexes' => true,'strict' => true,'engine' => null,'options' => array_filter([PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),]),], 'read' => ['driver' => 'mysql','host' => env('DB_READ_HOST', '127.0.0.1'),'port' => env('DB_READ_PORT', '3306'),'database' => env('DB_READ_DATABASE', 'forge'),'username' => env('DB_READ_USERNAME', 'forge'),'password' => env('DB_READ_PASSWORD', ''),'unix_socket' => env('DB_READ_SOCKET', ''),'charset' => 'utf8mb4','collation' => 'utf8mb4_unicode_ci','prefix' => env('DB_PREFIX', ''),'prefix_indexes' => true,'strict' => true,'engine' => null,'options' => array_filter([PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),]),],'write' => ['driver' => 'mysql','host' => env('DB_WRITE_HOST', '127.0.0.1'),'port' => env('DB_WRITE_PORT', '3306'),'database' => env('DB_WRITE_DATABASE', 'forge'),'username' => env('DB_WRITE_USERNAME', 'forge'),'password' => env('DB_WRITE_PASSWORD', ''),'unix_socket' => env('DB_WRITE_SOCKET', ''),'charset' => 'utf8mb4','collation' => 'utf8mb4_unicode_ci','prefix' => env('DB_PREFIX', ''),'prefix_indexes' => true,'strict' => true,'engine' => null,'options' => array_filter([PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),]),],

?

控制器取數據

public function index(){ // 默認數據庫 (mysql)$res = DB::table('goods')->get();// 從read取數據$read = DB::connection('read')->table('goods')->get();// 從write取數據$write = DB::connection('write')->table('goods')->get();print_r($res);}

?

?

同理，緩存(redis、memcache多庫)配置方法一樣

來源：https://www.cnblogs.com/wesky/p/10444470.html

總結

以上是生活随笔為你收集整理的laravel5.8笔记八：数据库（单库和多库）的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。