type Exception reportmessage description The server encountered an internal error that prevented it from fulfilling this request.exception java.lang.NullPointerException
com.alex.restrantol.dao.UserDao.findUserIsExist(UserDao.java:105)
com.alex.restrantol.servlet.LoginServlet.service(LoginServlet.java:27)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.36 logs.
com.alex.restrantol.dao.UserDao.findUserIsExist(UserDao.java:105)
com.alex.restrantol.servlet.LoginServlet.service(LoginServlet.java:27)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.36 logs.
com.alex.restrantol.servlet.LoginServlet.service(LoginServlet.java:27)应该是没获取到值。