在线等，急： The server encountered an internal error () that prevented it from fulfil

[Checksoft]

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:541)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
com.ec.survey.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:56)
root cause

java.lang.NullPointerException
com.swufe.sql.SQLCommand.queryRowSet(SQLCommand.java:92)
com.swufe.sql.SQLCommand.queryScalar(SQLCommand.java:121)
com.ec.survey.dao.mssqlimpl.AdminDAOimpl.checkPwd(AdminDAOimpl.java:47)
org.apache.jsp.login_jsp._jspService(login_jsp.java:64)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
com.ec.survey.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:56)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.13 logs.

Apache Tomcat/6.0.13
大神，这个怎么解决？在线等，急。

[孟子E章]

java.lang.NullPointerException com.swufe.sql.SQLCommand.queryRowSet(SQLCommand.java:92) SQLCommand.java文件的92行代码，里面有对象为 null了。