500 Servlet Exception
java.lang.NullPointerException
at com.comgi.share.db.Mysql.executeQuery(Mysql.java:90)
at _index__jsp._jspService(/index.jsp:241)
at com.caucho.jsp.JavaPage.service(JavaPage.java:75)
at com.caucho.jsp.Page.subservice(Page.java:506)
at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:182)
at com.caucho.server.http.Invocation.service(Invocation.java:315)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:253)
at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:170)
at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
at java.lang.Thread.run(Thread.java:595)
java.lang.NullPointerException
at com.comgi.share.db.Mysql.executeQuery(Mysql.java:90)
at _index__jsp._jspService(/index.jsp:241)
at com.caucho.jsp.JavaPage.service(JavaPage.java:75)
at com.caucho.jsp.Page.subservice(Page.java:506)
at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:182)
at com.caucho.server.http.Invocation.service(Invocation.java:315)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:253)
at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:170)
at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
at java.lang.Thread.run(Thread.java:595)
是不是你调用的类的方法是空值
去你的服务器work目录下,
找工程下的index.jsp的241行
(at _index__jsp._jspService(/index.jsp:241) ),应该是你的程序出了问题
你看下这个方法里面,有个对象是nullpoint,所以用的时候就会异常。