提交前页面加载时的Servlet Null指针异常

my servlet below is firing a null pointer exception, but the server console is not detailing where the exception is firing from. Also the page for which the form linked to the servlet is on doesn't load and just displays a HTTP Status 500 error about the null pointer exception. Below i have copied my servlet and database connection code but can really see where the error would originate from?my servlet below is firing a null pointer excep