Question

致命错误：在C：\ xampp \ htdocs \ jsms \ sms.php中显示消息“无法设置COM端口，检查它是否正确”的未捕获异常'异常'：堆栈跟踪：＃0 C：\ xampp \ htdocs \ jsms \ sms.php（17）：gsm_send_sms-＆gt; init（）＃1 {main}在第61行的C：\ xampp \ htdocs \ jsms \ sms.php中抛出     public function init（）{

    $this->debugmsg("Setting up port: \"{$this->port} @ \"{$this->baud}\" baud");

    exec("MODE {$this->port}: BAUD={$this->baud} PARITY=N DATA=8 STOP=1", $output, $retval);

    if ($retval != 0) 
    {
        throw new Exception('Unable to setup COM port, check it is correct');
    }

    $this->debugmsg(implode("\n", $output));
    $this->debugmsg("Opening port");

    //Open COM port
    $this->fp = fopen($this->port . ':', 'r+');

    //Check port opened
    if (!$this->fp) {
        throw new Exception("Unable to open port \"{$this->port}\"");
    }

Answer 1

你没有抓住你抛出的异常：

if ($retval != 0) 
{
    throw new Exception('Unable to setup COM port, check it is correct');
}

如果

，则抛出

exec("MODE {$this->port}: BAUD={$this->baud} PARITY=N DATA=8 STOP=1", $output, $retval);

返回错误int（任何！= 0）。

使用：

try {
    exec("MODE {$this->port}: BAUD={$this->baud} PARITY=N DATA=8 STOP=1", $output, $retval);
    if ($retval != 0) 
    {
        throw new Exception('Unable to setup COM port, check it is correct');
    }
} catch (Exception $e) {
    // do whatever you want to handle the error
}

致命错误：未捕获异常'Exception'，消息'无法设置COM端口，检查是否正确'

1 个答案: