Cannot Register JDBC Driver on host,Java Programming,Java Essentials

# 2

Oh my godness!

I have tried my web.xml file:

I really don't know why this happened, if I remove the bold text below, I can start my tomcat server and it run well. Otherwise, if I keep my testSer, my tomcat server cannot start?

web.xml

-

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app

PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

<servlet>

<servlet-name>testSer</servlet-name>

<servlet-class>testSer</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>testSer</servlet-name>

<url-pattern>/hello</url-pattern>

</servlet-mapping>

<servlet-name>ProductServlet</servlet-name>

<servlet-class>ProductServlet</servlet-class>

<init-param>

<param-name>root</param-name>

<param-value>http://www.myweb.com</param-value>

</init-param>

<init-param>

<param-name>base</param-name>

<param-value>http://www.myweb.com/site</param-value>

</init-param>

<init-param>

<param-name>driver</param-name>

<param-value>com.mysql.jdbc.Driver</param-value>

</init-param>

<init-param>

<param-name>imageUrl</param-name>

<param-value>http://www.myweb.com/images</param-value>

</init-param>

<init-param>

<param-name>host</param-name>

<param-value>localhost</param-value>

</init-param>

<init-param>

<param-name>db</param-name>

<param-value>mydb_com_-_alpha</param-value>

</init-param>

<init-param>

<param-name>username</param-name>

<param-value></param-value>

</init-param>

<init-param>

<param-name>password</param-name>

<param-value></param-value>

</init-param>

</servlet>

<servlet-mapping>

<servlet-name>ProductServlet</servlet-name>

<url-pattern>/site</url-pattern>

</servlet-mapping>

</web-app>

baodinha at 2007-7-8 1:35:46 >

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# 4

Yes, i had a servlet named testSer.class , and I put it in WEB-INF/classes/ Right?Let me try to put it in package

baodinha at 2007-7-8 1:35:46 >

# 6

However, something I visit the page and I got this error (1/10), this never happened when I test local.

--

pache Tomcat/4.0.6 - HTTP Status 500 - Internal Server Error

--

type Exception report

message Internal Server Error

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

exception

javax.servlet.ServletException: org/apache/jasper/runtime/JspException

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:481)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:683)

at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:431)

at org.apache.catalina.core.ApplicationDispatcher.access$000(ApplicationDispatcher.java:115)

at org.apache.catalina.core.ApplicationDispatcher$PrivilegedForward.run(ApplicationDispatcher.java:130)

at java.security.AccessController.doPrivileged(Native Method)

at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:347)

at FOGBean.ProductServlet.doPost(ProductServlet.java:80)

at FOGBean.ProductServlet.doGet(ProductServlet.java:59)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)

at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:98)

at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:176)

at java.security.AccessController.doPrivileged(Native Method)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:172)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)

at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)

at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)

at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)

at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)