You can also configure DBCP to do some connection pooling, without much
effort. I'd recommend avoiding the root user for your DB connection.
The error message you saw is a poor one, but common.
In your global resources:
<Resource
name="jdbc/BuilderDB"
type="javax.sql.DataSource"
driverClassName="com.mysql.jdbc.Driver"
factory="org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory"
maxActive="10"
maxIdle="1"
maxWait="5000"
minIdle="1"
initialSize="10"
removeAbandoned="true"
removeAbandonedTimeout="60"
logAbandoned="true"
validationQuery="select count(*) from test"
username="root"
password="admin"
url="jdbc:mysql://localhost/builder"
/>
A DataSource in your <Context...>
<ResourceLink
debug="5"
name="jdbc/BuilderDB"
global="jdbc/BuilderDB"
type="javax.sql.DataSource"/>
A Realm in your <Engine...> or <Host...>
<Realm className="org.apache.catalina.realm.DataSourceRealm"
dataSourceName="jdbc/BuilderDB"
roleNameCol="role_name"
userNameCol="user_name"
userCredCol="user_pass"
userRoleTable="user_roles"
userTable="users"/>
Pid wrote:
> You need a ResourceLink in the Host or Context, to make the global
> resource available.
>
> Does the Context xml file contain this?
>
>
>
> Scott Purcell wrote:
>> Hello,
>>
>>
>>
>> I am receiving errors when configuring a JNDI resource for my database
>> using Tomcat 5.5 on a Windoz box. I used the admin interface and entered
>> the following data:
>>
>> in admin screen
>>
>> under Data Sources
>>
>> JNDI Name= jdbc/BuilderDB
>>
>> Driver com.mysql.jdbc.Driver
>>
>> Data Source URL=jdbc:mysql://localhost/builder
>>
>> JDBC Driver Class=com.mysql.jdbc.Driver
>>
>>
>>
>> Then I made sure my driver was in
>>
>> common/lib/mysql-connector-java-3.1.12
>>
>>
>>
>>
>>
>> Then went to the web.xml file added my resource
>>
>> web.xml
>>
>> <resource-ref>
>> <description>DB Connection</description>
>> <res-ref-name>jdbc/BuilderDB</res-ref-name>
>> <res-type>javax.sql.DataSource</res-type>
>> <res-auth>Container</res-auth>
>> </resource-ref>
>>
>>
>>
>>
>>
>> After committing the change in the admin module, it updated the
>> server.xml and added this the <Resource (see below).
>>
>> When I try and get a jndi connection doing a lookup, I get this error
>> (see below).
>>
>>
>>
>> As I read the docs for 5.5, and I do not see any examples. Does anyone
>> see any problems with this, or know what may cause this error?
>>
>>
>>
>>
>>
>> Thanks,
>>
>> Scott
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> error
>>
>> org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC
>> driver of class '' for connect URL 'null'
>> at
>> org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSo
>> urce.java:780)
>> at
>> org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSourc
>> e.java:540)
>> at foo.DBTest.init(DBTest.java:23)
>> at org.apache.jsp.test_jsp._jspService(test_jsp.java:51)
>> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>> at
>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja
>> va:332)
>> at
>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
>> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
>> tionFilterChain.java:252)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
>> erChain.java:173)
>> at
>> com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.
>> java:142)
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Server.xml
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <Server>
>> <Listener className="org.apache.catalina.core.AprLifecycleListener"/>
>> <Listener
>> className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/
>> <Listener
>> className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"
>> />
>> <Listener
>> className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
>> <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"
>> pathname="conf/tomcat-users.xml"
>> factory="org.apache.catalina.users.MemoryUserDatabaseFactory"/>
>> <Resource
>> name="jdbc/BuilderDB"
>> type="javax.sql.DataSource"
>> password="admin"
>> driverClassName="com.mysql.jdbc.Driver"
>> maxIdle="2"
>> maxWait="5000"
>> validationQuery="select * from test
>> "
>> username="root"
>> url="jdbc:mysql://localhost/builder"
>> maxActive="4"/>
>> </GlobalNamingResources>
>> <Service
>> name="Catalina">
>> <Connector
>> port="8080"
>> redirectPort="8443"
>> minSpareThreads="25"
>> connectionTimeout="20000"
>> maxThreads="150"
>> maxSpareThreads="75">
>> </Connector>
>> <Connector
>> port="8009"
>> redirectPort="8443"
>> protocol="AJP/1.3">
>> </Connector>
>> <Engine
>> defaultHost="localhost"
>> name="Catalina">
>> <Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>
>> <Host
>> appBase="webapps"
>> name="localhost">
>> </Host>
>> </Engine>
>> </Service>
>> </Server>
>>
>>
>>
>>
>>
>>
>
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