没人解决吗！

lihaifeng0412 2007-12-16 04:57:52

我写的jsp为什么有句话老编译不过去？
代码如下：



<%@page import="java.io.*" %>

<%@page isErrorPage="true" %>

<html>

<head>

<title>

Jdbc connect error

</title>

<body>

<h3>

jdbc connect error

</h3>

<table width="600">

<tr><td>

There are several reasons a jdbc connection can fail:

</td></tr>

<tr><td>

<ul>

<li>the sql database is not installed</li>

<li>the sql database is not running</li>

<li>the jdbc driver is not installed</li>



</ul>

</td></tr>

<tr><td>

unfortunagely the above explanations

are probably more lucid

<br>than the usually

cryptic exception message.

</td></tr>

<tr><td>

jdbcSetupTest.jsp threw this exception report:<br>

<%= exception %>

</td></tr>

<tr><td>

stack trace

</td></tr>

<tr><td>

<pre>

<% exception.printStackTrace(new PrintWriter(out)); %>

</pre>

</td></tr>

</table>

</body>

</head>

</html>

<% exception.printStackTrace(new PrintWriter(out)); %>
这句话老编译不过，为什么，怎么改啊！！！！！！（但是去掉后就可以编译通过）出现的错误如下：

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /JdbcConnectError.jsp at line 39

36: </td></tr>
37: <tr><td>
38: <pre>
39: <% exception.printStackTrace(new PrintWriter(out)); %>
40: </pre>
41: </td></tr>
42: </table>

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:524)
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)

root cause

java.lang.NullPointerException
org.apache.jsp.JdbcConnectError_jsp._jspService(JdbcConnectError_jsp.java:97)
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)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.14 logs.

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