public function handleRequest(IStudent $student)
{
if ($this->state === $student->getState()) {
$this->process($student);
} else {
echo '请求上级批复...', PHP_EOL;
$this->nextHandler->handleRequest($student);
}
}
public function process(IStudent $student)
{
echo '请假信息：', $student->getMessage(), PHP_EOL;
echo '校长批复...', PHP_EOL;
}