voit25
发贴: 7
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于 2006-04-28 14:38
<%@ page contentType="text/html; charset=GBK" %> <%@page import="java.sql.*"%> <html> <% String url="jdbc:odbc:zms"; Connection conn=null; String s=null; try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
conn=DriverManager.getConnection(url,"","");
} catch(java.lang.Exception ex){ex.printStackTrace();}
if(conn.equals(null)){s="不对!";}else{s="可以的!";} %>
<%=s %> </html>
错误是:::
Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372) 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.lang.NullPointerException org.apache.jsp.co_jsp._jspService(co_jsp.java:60) 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/5.0.29 logs.
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