Hi Kolinko,
I have now removed the ResourceLink and left with Resource in my context.xml
which is resided at WebContent/META-INF.
And this is C:\Program Files\Apache Software Foundation\Tomcat
8.0\conf\context.xml
<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
--><!-- The contents of this file will be loaded for each web application
--><Context>
<!-- Default set of monitored resources. If one of these changes, the -->
<!-- web application will be reloaded. -->
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>
<!-- Uncomment this to disable session persistence across Tomcat restarts
-->
<!--
<Manager pathname="" />
-->
<!-- Uncomment this to enable Comet connection tacking (provides events
on session expiration as well as webapp lifecycle) -->
<!--
<Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
-->
</Context>
And here's my web.xml :
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns="http://xmlns.jcp.org/xml/ns/javaee";
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"; version="3.1">
<display-name>Hi5S</display-name>
<welcome-file-list>
<welcome-file>Index.jsp</welcome-file>
</welcome-file-list>
<resource-ref>
<description>MySQL Datasource</description>
<res-ref-name>jdbc/hi5</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
The error remains the same and my Tomcat failed to start, despite I cleaned
them etc etc.
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException:
org.apache.catalina.LifecycleException: Failed to start component
[StandardEngine[Catalina].StandardHost[localhost]]
Could you advise how to go about making it work ?
Hope to hear from you soon.
--------------------------------------------
On Fri, 9/22/17, Konstantin Kolinko <knst.koli...@gmail.com> wrote:
Subject: Re: Help needed - JPA probem - No connection specified with project
To: "Tomcat Users List" <users@tomcat.apache.org>, "Karen Goh"
<karenwo...@yahoo.com>
Date: Friday, September 22, 2017, 10:00 PM
2017-09-22 13:35 GMT+03:00 Karen
Goh <karenwo...@yahoo.com.invalid>:
> Hi expert,
>
> I have been trying very hard to nail the
above problem including asking various forums like
CodeRanch, dream in code etc but to no avail.
>
> As such, I am hoping
to get help from the Apache Tomcat user support.
>
> Tools and setting :
Eclipse Mars, Tomcat 1.8, MySQL, OS : Windows 7, Maven, Java
JPA with Hibernate framework 5.1.0
There is no such version as "Tomcat
1.8". I assume that you meant some
version of Tomcat 8.0.x.
> The MySQL setting is
confirmed correct, as I have managed to insert the data via
single JDBC connection.
>
> Project summary : J2ee servlet with JSP,
Java JPA in Hibernate framework. (Hibernate is for pure
insertion of data - many to many relationship)
>
> My purpose is to get
the JNDI datasource working but till now I can't just
get it work.
>
>
Here's my context.xml :
>
> <?xml version="1.0"
encoding="UTF-8"?>
>
<Context path="/Hi5S" docBase="Hi5S"
crossContext="true" reloadable="true"
antiResourceLocking="true"
debug="1">
>
<ResourceLink global="jdbc/hi5"
name="jdbc/hi5"
type="javax.sql.DataSource"/>
> <Resource>
>
name="jdbc/hi5"
>
auth="Container"
>
type="javax.sql.DataSource"
>
maxTotal="8"
>
maxActive="100"
>
maxIdle="30"
>
maxWait="-1"
>
username="root"
>
singleton="true"
>
override="true"
>
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
> password="password"
>
alternateUsernameAllowed="true"
>
driverClassName="com.mysql.jdbc.Driver"
>
url="jdbc:mysql://localhost:3306/hi5" />
> </Resource>
> </Context>
The META-INF/context.xml file of a web
application must have only one
of
<Resource, ResourceLink> elements with the same value
of "name"
attribute.
If you have a
ResourceLink in context.xml, it means that your Resource
element must go into GlobalNamingResources
element of conf/server.xml
file.
http://tomcat.apache.org/tomcat-8.5-doc/config/globalresources.html
BTW, you
should not modify conf/context.xml file. It is the
defaults
file shared by all web
applications. (Modifying it is a common
configuration mistake).
Best regards,
Konstantin Kolinko
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