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HTTP Status 500 – Internal Server Error
Type Exception Report
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
java.lang.NullPointerExceptiondao.UserDao.isUserExist(UserDao.java:16)service.SignInServlet.doPost(SignInServlet.java:28)javax.servlet.http.HttpServlet.service(HttpServlet.java:661)javax.servlet.http.HttpServlet.service(HttpServlet.java:742)org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Note The full stack trace of the root cause is available in the server logs.
Apache Tomcat/8.5.20
2017年09月12日 07点09分
1
Type Exception Report
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
java.lang.NullPointerExceptiondao.UserDao.isUserExist(UserDao.java:16)service.SignInServlet.doPost(SignInServlet.java:28)javax.servlet.http.HttpServlet.service(HttpServlet.java:661)javax.servlet.http.HttpServlet.service(HttpServlet.java:742)org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Note The full stack trace of the root cause is available in the server logs.
Apache Tomcat/8.5.20