如何在 Symfony 4 中将数据库连接 "localhost" 更改为“127.0.0.1”?

How can I change database connection "localhost" to "127.0.0.1" in Symfony 4?

根据本题的解析...

What is the Symfony firewall doing that takes so long?

...我尝试在 .env 文件中更改

DATABASE_URL=mysql://root:root@localhost/project

DATABASE_URL=mysql://root:root@127.0.0.1/project

以获得更好的性能。

但是我得到一个错误:

An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused

Uncaught PHP Exception Doctrine\DBAL\Exception\ConnectionException: "An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused" at /Users/work/project/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 112

检查数据库本身的用户权限,您的用户可能只允许通过本地主机访问。

SELECT * FROM mysql.user where user = '<username>';

检查主机列。如果你只得到主机 'localhost' 的一行,那么你可以添加另一个具有相同详细信息但对于 127.0.0.1 主机

CREATE USER '<username>'@'127.0.0.1';
SET PASSWORD FOR '<username>'@'localhost' = PASSWORD('<password>');
FLUSH PRIVILEGES;

sql 超出了我的想象,您可能需要仔细检查一下。