奇怪的问题

Question

从数据库中读取一条记录时出现错误，把其中一个字段取消就能正常显示，也就是说当有这个字段是给出错误提示，不显示该字段只显示其他几个字段是能正常显示，请问为什么？

Answer 1

HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: No data found
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.yqjview_jsp._jspService(yqjview_jsp.java:187)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.sql.SQLException: No data found
sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7139)
sun.jdbc.odbc.JdbcOdbc.SQLGetDataString(JdbcOdbc.java:3908)
sun.jdbc.odbc.JdbcOdbcResultSet.getDataString(JdbcOdbcResultSet.java:5702)
sun.jdbc.odbc.JdbcOdbcResultSet.getString(JdbcOdbcResultSet.java:356)
sun.jdbc.odbc.JdbcOdbcResultSet.getString(JdbcOdbcResultSet.java:413)
org.apache.jsp.yqjview_jsp._jspService(yqjview_jsp.java:155)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.27 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.0.27