Question

我试过

if (DB::connection()) { 
    //
}

但这会产生错误：

[PDOException]
SQLSTATE[HY000] [1045] Access denied for user 'homestead'@'localhost' (using password: YES)

我想从代码中测试连接是否正常，但没有错误，我正在寻找解决方案而不尝试捕捉.....

Answer 1

正如@Luke指出的那样，你最好的选择之一是使用try和catch。

try{
    Schema::hasTable('mytable');
    // or \DB::statement('show Databases');
}catch(\PDOException $e){
    //This means there is definitely error connecting to database
    //I don't understand why you don't want to catch me :(
}

您可以在帮助函数或特征中使用上述代码，或者您选择的任何理智的想法。其他可能性使用shell_exec()或system()等

Answer 2

您可以在try catch语句中使用此代码，以便您可以捕获异常，然后输出更好的消息，或重定向到其他位置。

供参考：

http://php.net/manual/en/language.exceptions.php http://www.w3schools.com/php/php_exception.asp

Answer 3

只做简单的工匠命令。

debug: websocket writing 1::
debug: setting request GET /socket.io/1/websocket/SFePun_Ug5ycS5EVIrSO
debug: set heartbeat interval for client SFePun_Ug5ycS5EVIrSO
debug: discarding transport
debug: cleared heartbeat interval for client SFePun_Ug5ycS5EVIrSO
debug: setting request GET /socket.io/1/websocket/SFePun_Ug5ycS5EVIrSO
debug: set heartbeat interval for client SFePun_Ug5ycS5EVIrSO
debug: discarding transport
debug: cleared heartbeat interval for client SFePun_Ug5ycS5EVIrSO
debug: setting request GET /socket.io/1/websocket/SFePun_Ug5ycS5EVIrSO
debug: set heartbeat interval for client SFePun_Ug5ycS5EVIrSO
debug: discarding transport
(repeated a couple of times)
...
IIS Detailed Error - 503.13 - Number of active WebSocket requests has reached the maximum concurrent WebSocket requests allowed.

socket.connect("http://myapp.azurewebsites.net/", this);

如何测试laravel中的连接是否正常？

3 个答案: