I'm trying to make a web application with JSP and servlets that access to a
MySQL data base. When I call to one of the servlets that access to the DB, the
browser (mozilla) works for a few seconds but at the end it show nothing (a
totally blank page) and in the browser status bar appear the following
message: "Finished". What I have to do in order to it works?
My Enviroment:
Linux Red Hat
Tomcat 5.0.25
MySQL 4.0.17
More information:
********************************************************************************
server.xml (conf) ---->
<?xml version='1.0' encoding='utf-8'?>
<Server>
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
<Listener
className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
<GlobalNamingResources>
<Environment name="simpleValue" type="java.lang.Integer" value="30"/>
<Resource auth="Container" description="User database that can be updated
and saved" name="UserDatabase" type="org.apache.catalina.UserDatabase"/>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>
<Service name="Catalina">
<Connector acceptCount="100" connectionTimeout="20000"
disableUploadTimeout="true" port="80" redirectPort="8443">
</Connector>
<Connector port="8009" protocol="AJP/1.3"
protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler"
redirectPort="8443">
</Connector>
<Engine defaultHost="localhost" name="Catalina">
<Host appBase="webapps" name="localhost">
<DefaultContext
className="org.apache.catalina.core.StandardDefaultContext" reloadable="true">
</DefaultContext>
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_log." suffix=".txt" timestamp="true"/>
</Host>
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina_log." suffix=".txt" timestamp="true"/>
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>
</Engine>
</Service>
</Server>
********************************************************************************
*********************************
web.xml (WEB_INF) --->
<?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>
<display-name>
Agendita
</display-name>
<description>
Es un ejemplo que muestra el funcionamiento de los Java Servlets con
MySQL
</description>
<servlet-mapping>
<servlet-name>invoker</servlet-name>
<url-pattern>/servlet/*</url-pattern>
</servlet-mapping>
</web-app>
********************************************************************************
***********************************
[EMAIL PROTECTED] root]# echo $CLASSPATH
/opt/SUNWappserver/jdk/lib:/usr/local/jakarta-tomcat-
5.0.25/common/lib:/usr/local/mysql-connector-java-3.0.14-
production:/usr/local/jakarta-tomcat-5.0.25/common/lib/servlet-
api.jar:/usr/local/jakarta-tomcat-5.0.25/common/lib/mysql-connector-java-3.0.14-
production-bin.jar:/opt/SUNWappserver/jdk/lib:/usr/local/jakarta-tomcat-
5.0.25/common/lib:/usr/local/mysql-connector-java-3.0.14-
production:/usr/local/jakarta-tomcat-5.0.25/common/lib/servlet-
api.jar:/usr/local/jakarta-tomcat-5.0.25/common/lib/mysql-connector-java-3.0.14-
production-bin.jar:/opt/SUNWappserver/jdk/lib:/usr/local/jakarta-tomcat-
5.0.25/common/lib:/usr/local/mysql-connector-java-3.0.14-
production:/usr/local/jakarta-tomcat-5.0.25/common/lib/servlet-
api.jar:/usr/local/jakarta-tomcat-5.0.25/common/lib/mysql-connector-java-3.0.14-
production-bin.jar:
[EMAIL PROTECTED] root]# echo $CLASSPATH
/opt/SUNWappserver/jdk/lib:
/usr/local/jakarta-tomcat-5.0.25/common/lib:
/usr/local/mysql-connector-java-3.0.14-production:
/usr/local/jakarta-tomcat-5.0.25/common/lib/servlet-api.jar:
/usr/local/jakarta-tomcat-5.0.25/common/lib/mysql-connector-java-3.0.14-
production-bin.jar:
/usr/local/jakarta-tomcat-5.0.25/common/lib/servlet-api.jar:
/usr/local/jakarta-tomcat-5.0.25/common/lib/servlet-api.jar:
********************************************************************************
***********************************
[EMAIL PROTECTED] root]# netstat -tlnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
PID/Program name
tcp 0 0 0.0.0.0:32768 0.0.0.0:* LISTEN
3529/rpc.statd
tcp 0 0 127.0.0.1:32769 0.0.0.0:* LISTEN
3691/xinetd
tcp 0 0 127.0.0.1:8005 0.0.0.0:* LISTEN
4385/java
tcp 0 0 0.0.0.0:8009 0.0.0.0:* LISTEN
4385/java
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN
3807/mysqld
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
3510/portmap
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
4385/java
tcp 0 0 0.0.0.0:6000 0.0.0.0:* LISTEN
3922/X
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
3677/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
3635/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
3717/sendmail: acce
Thanks in advance
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