搞不定了，大家帮忙：CachedRowSetImpl

在JSP页面下调用出错：
java.lang.NullPointerException
java.io.Reader.(Reader.java:61)
java.io.InputStreamReader.(InputStreamReader.java:80)
java.util.Properties.load(Properties.java:266)
java.util.PropertyResourceBundle.(PropertyResourceBundle.java:96)
com.sun.rowset.JdbcRowSetResourceBundle.(Unknown Source)
com.sun.rowset.JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle(Unknown Source)
com.sun.rowset.CachedRowSetImpl.(Unknown Source)
com.hanbaoju.forum.DBOperator.(DBOperator.java:37)
org.apache.jsp.rowset_jsp._jspService(rowset_jsp.java:62)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:285)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:232)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)是我的数据源不对吗？但别的情况下正长啊
应该怎样改正  ？