Develop Reference

Why does my Java app work in local but when delivering to IBM Cloud it gives this error

I have created an app that uses JPA as well as servlets with JAX-RS.
When I run the app locally, I am able to query my server with curl and get the proper response for all the GET and POST requests. However, when I host the server on IBM Cloud and I query it with curl I get the error: "No Persistence provider for EntityManager".
What's causing the discrepancy between the local and remote (IBM Cloud) environments and what can I do to fix it?
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="ibmcloud">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<non-jta-data-source>java:comp/DefaultDataSource</non-jta-data-source>
<class>entities.Comment</class>
<properties>
<property name="javax.persistence.schema-generation.database.action" value="drop-and-create"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.use_sql_comments" value="true"/>
</properties>
</persistence-unit>
</persistence>
.travis.yml
language: java
jdk: oraclejdk8
sudo: false
before_install:
mvn install -DskipTests=true -Dmaven.javadoc.skip=true -B -V
before_deply:
cf login -u $BLUEMIX_USER -o $BLUEMIX_ORG
script:
mvn test -B
language: java
git:
depth: 1
dist: trusty
cache:
directories:
- "$HOME/.m2"
deploy:
edge: true
provider: bluemixcloudfoundry
username: $BLUEMIX_USER
password: $BLUEMIX_PASSWORD
organization: $BLUEMIX_ORG
space: $BLUEMIX_SPACE
manifest: manifest.yml
app_name: ibmcloudapp
region: eu-gb
api: https://api.eu-gb.bluemix.net
skip_cleanup: true
manifest.yml
applications:
- name: ibmcloud
path: target/ibmcloud.war
instances: 1
random-route: true
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.dotheminimum</groupId>
<artifactId>ibmcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/javax.ws.rs/javax.ws.rs-api -->
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.4.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.4.0</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate.javax.persistence/hibernate-jpa-2.1-api -->
<!-- <dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.2.Final</version>
</dependency> -->
<!-- https://mvnrepository.com/artifact/javax.persistence/javax.persistence-api -->
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>javax.persistence-api</artifactId>
<version>2.2</version>
</dependency>
</dependencies>
<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
</plugins>
</build>
</project>
The source code for the app is hosted here

The problem was that my "persistence.xml" file was under "src/main/java/META-INF" instead of "src/main/resources/META-INF".
My local environment was able to find the file, but IBM Cloud didn't. After changing the path of "persistence.xml", the file was detected by IBM Cloud.
If I had been exhaustive, I would have been able to find my solution in the comments of the first result of the search linked to by Billy Frost (No Persistence provider for EntityManager named)

FileNotFoundException in Spring

I am not able to resolve the issue am getting.
Full stacktrace:
12:14:08.172 [main] DEBUG o.s.core.env.StandardEnvironment - Adding [systemProperties] PropertySource with lowest search precedence
12:14:08.178 [main] DEBUG o.s.core.env.StandardEnvironment - Adding [systemEnvironment] PropertySource with lowest search precedence
12:14:08.178 [main] DEBUG o.s.core.env.StandardEnvironment - Initialized StandardEnvironment with PropertySources [systemProperties,systemEnvironment]
12:14:08.183 [main] INFO o.s.c.s.ClassPathXmlApplicationContext - Refreshing org.springframework.context.support.ClassPathXmlApplicationContext#24273305: startup date [Thu Mar 16 12:14:08 GMT 2017]; root of context hierarchy
12:14:08.222 [main] DEBUG o.s.core.env.StandardEnvironment - Adding [systemProperties] PropertySource with lowest search precedence
12:14:08.223 [main] DEBUG o.s.core.env.StandardEnvironment - Adding [systemEnvironment] PropertySource with lowest search precedence
12:14:08.223 [main] DEBUG o.s.core.env.StandardEnvironment - Initialized StandardEnvironment with PropertySources [systemProperties,systemEnvironment]
12:14:08.233 [main] INFO o.s.b.f.xml.XmlBeanDefinitionReader - Loading XML bean definitions from class path resource [org/postprocessor/config/dataSupport.xml]
Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [org/postprocessor/config/dataSupport.xml]; nested exception is java.io.FileNotFoundException: class path resource [org/postprocessor/config/dataSupport.xml] cannot be opened because it does not exist
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:344)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:252)
at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:127)
at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:93)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)
at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:612)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:513)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at org.postprocessor.dao.DaoMain.main(DaoMain.java:12)
Caused by: java.io.FileNotFoundException: class path resource [org/postprocessor/config/dataSupport.xml] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:330)
... 13 more
Bean config file dataSupport.xml is here:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- <bean/> definitions here -->
<context:annotation-config />
<context:component-scan base-package="org.postprocessor.dao" />
<context:component-scan base-package="org.postprocessor.model" />
<context:component-scan base-package="org.postprocessor.util" />
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="org.apache.derby.jdbc.EmbeddedDriver"
/> <property name="url" value="jdbc:derby:postprocessor;create=true;" />
<!-- <property name="driverClassName" value="org.apache.derby.jdbc.ClientDriver" />
<property name="url" value="jdbc:derby://localhost:1527/db;create=true;" /> -->
<property name="initialSize" value="1" />
<property name="maxActive" value="1" />
</bean>
<bean id="daoImpl" class="org.postprocessor.dao.DaoImpl" scope="prototype">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basenames">
<list>
<value>resourceBundles/general</value>
<value>resourceBundles/codeLists/codelist_eortcqlqc30</value>
<value>resourceBundles/codeLists/codelist_eortcqlqlc13</value>
<value>resourceBundles/codeLists/codelist_eq5d3l</value>
<value>resourceBundles/codeLists/codelist_eq5d5l</value>
<value>resourceBundles/codeLists/codelist_noncompletedquestionnaires</value>
<value>resourceBundles/codeLists/codelist_pgis</value>
<value>resourceBundles/codeLists/codelist_silc</value>
</list>
</property>
</bean>
snipped from pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SBP</groupId>
<artifactId>SBP</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>gt20047</name>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.1.RELEASE</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-asm -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-asm</artifactId>
<version>3.1.4.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/asm/asm-all -->
<dependency>
<groupId>asm</groupId>
<artifactId>asm-all</artifactId>
<version>3.3.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.derby/derbynet -->
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derbynet</artifactId>
<version>10.12.1.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.derby/derbyclient -->
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derbyclient</artifactId>
<version>10.12.1.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>2.0.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-pool/commons-pool -->
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.6</version>
</dependency>
<dependency>
<groupId>com.opencsv</groupId>
<artifactId>opencsv</artifactId>
<version>3.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-io -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>19.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-collections/commons-collections -->
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-csv</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>net.lingala.zip4j</groupId>
<artifactId>zip4j</artifactId>
<version>1.3.2</version>
</dependency>
</dependencies>
<build>
<finalName>gt20047</finalName>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.3</version>
<configuration>
<archive>
<manifest>
<!-- Jar file entry point -->
<mainClass>org.postprocessor.dao.DaoMain</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
am not able to figure out where is the issue, my jar file doesn't have this config folder
DaoMain.java
package org.postprocessor.dao;
import java.io.File;
import org.postprocessor.util.FileZipper;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class DaoMain {
public static void main(String[] args) {
ApplicationContext ctx= new ClassPathXmlApplicationContext("classpath:/org/postprocessor/config/dataSupport.xml");
DaoImpl daoImpl=null;
FileZipper fileZipper=null;
try{
daoImpl= ctx.getBean("daoImpl",DaoImpl.class);
fileZipper= ctx.getBean("fileZipper",FileZipper.class);
daoImpl.startProcess();
fileZipper.zipFile(new File("").getAbsolutePath()+"/output");
}
catch(Exception e){
e.printStackTrace();
}
finally{
((ClassPathXmlApplicationContext) ctx).close();
}
}
}
How to solve this issue?

Looks like the main problem is at this line:
new ClassPathXmlApplicationContext("classpath:/org/postprocessor/config/dataSupport.xml");
You are trying to build context from classpath. Thus you have to locate your config file accessible from a classpath of your project.
You using Maven for building your project. Maven has defined project structure for code sources:
/src/main/java
and for resources:
/src/main/resorces
You can find more here: Introduction to the Standard Directory Layout
If you want to make your file accessible from classpath you have to put it exactly under - resources/ folder:
Now you main() will be, something like:
public static void main(String[] args) {
ApplicationContext ctx= new ClassPathXmlApplicationContext("classpath:config/dataSupport.xml");
Object dataSource = ctx.getBean("userRepo");
System.out.println(dataSource.getClass().getName());
// use your beans here
I created just demo bean. And here is output:
2017-03-20 15:22:40 INFO ClassPathXmlApplicationContext - Refreshing org.springframework.context.support.ClassPathXmlApplicationContext#16f65612: startup date [Mon Mar 20 15:22:40 EET 2017]; root of context hierarchy
2017-03-20 15:22:40 INFO XmlBeanDefinitionReader - Loading XML bean definitions from class path resource [config/dataSupport.xml]
demo.repository.UserRepository
BTW you can use try with resources for application context:
try(ClassPathXmlApplicationContext ctx =
new ClassPathXmlApplicationContext("classpath:config/dataSupport.xml")) {
// use your beans here
}
Additional resources:
using classpath: in spring
Java Spring - How to use classpath to specify a file location?

Your XML files are not well formed.
While I do not know if this is the issue, it may be the root cause of why your project is not taking the files correctly in the first place.
Your <beans> tag does not have a closing tag. Try putting </beans> at the end of the file.
Also, your pom.xml file has the same issue. The <project> is not closed. Try putting </project> at the end of the file.

I think the following should work:
ApplicationContext ctx= new ClassPathXmlApplicationContext("org/postprocessor/config/dataSupport.xml");
You don't need to specify "classpath" since you already use ClassPathXmlApplicationContext, and you have extra slash in the beginning.

move:
src/org/postprocessor/config/dataSupport.xml
to:
src/main/resources/org/postprocessor/config/dataSupport.xml

By default maven-compiler-plugin not includes non-java files. which left you with two options.
1. move your resource files (.properties, .xml etc) to "src/main/resources" (recomended.)
2. use maven resource plugin
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>2.6</version>
<executions>
<execution>
<id>copy-resources</id>
<phase>validate</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<outputDirectory>${basedir}/path/where/you/want</outputDirectory>
<resources>
<resource>
<directory>${basedir}</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
</configuration>
</execution>
</executions>
</plugin>

Hibernate 5.2.2: No Persistence provider for EntityManager

What has changed between Hibernate 5.1.1 and 5.2.2? If I use 5.2.2 I'll get an error message "No Persistence provider for EntityManager named pu". Exactly the same configuration works with 5.1.1. How should I change my code to get 5.2.2 to work?
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>jpatest</groupId>
<artifactId>jpatest</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<hibernate.version>5.2.2.Final</hibernate.version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.4.1209.jre7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate.version}</version>
</dependency>
</dependencies>
</project>
persistence.xml in src/main/resources/META-INF
<?xml version="1.0" encoding="UTF-8" ?>
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0" xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="pu" >
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.archive.autodetection" value="class" />
<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
<property name="hibernate.connection.driver_class" value="org.postgresql.Driver" />
<property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/mydb" />
<property name="hibernate.default_schema" value="myschema" />
<property name="hibernate.connection.username" value="xxx" />
<property name="hibernate.connection.password" value="zzz" />
<!-- <property name="hibernate.show_sql" value="true"/> -->
<property name="hibernate.flushMode" value="FLUSH_AUTO" />
<property name="hibernate.hbm2ddl.auto" value="validate" />
</properties>
</persistence-unit>
</persistence>
creating EntityManager
factory = Persistence.createEntityManagerFactory("pu");
em = factory.createEntityManager();
tx = em.getTransaction();

The class org.hibernate.ejb.HibernatePersistence does not exist in the hibernate-release-5.2.2.Final.zip bundle file. That's why the provider can't be found, because the class can't (at the project library jars). Instead, I used the class org.hibernate.jpa.HibernatePersistenceProvider, which CAN be found at hibernate-core-5.2.2.Final.jar (that comes with hibernate-release-5.2.2.Final.zip bundle), by changing the provider at persistence.xml to <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>. Doing so, it worked fine! Hope the problem is only this.

I had the same error.
I changed version of
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
</dependency>
from 5.3.1.Final to 5.3.6.Final and error disappeared.

Sometimes simply forgetting to add the persistence.xml file to build path causes this problem. Follow the following steps:
Right click on persistence.xml file.
Click on Build Path
Add to build path
Then it should work.

Error while initializing persistence.xml

I'm working on a project made with :
Web Dynamic Project + JPA 2.1 / EclipseLink 2.5.2
Tomcat 8.0.28 / JRE 1.8.0_66
Eclipse Luna
JPA part of the project was running fine when executed in a simple JPA project as a Java Application.
I made no changes on that part of the code.
I wanted to print some request results in a JSP. I generated a servlet and tried to print the name of a user already created in the database. For hours I had errors about JDBC driver and persistence.xml not found.
In order to solve dependancies problems I added Maven.
Now, my user is printed in the JSP and that's fine, but my "Run.java" class I used previously doesn't work anymore.
I'm quiet lost with the error I get when running my app as a "Java Application" :
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.<clinit>(EntityManagerFactoryProvider.java:55)
at org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactoryImpl(PersistenceProvider.java:92)
at org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:188)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:79)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)
at dao.LayerDAO.<init>(LayerDAO.java:16)
at exec.Run.main(Run.java:18)
Caused by: java.lang.NullPointerException
at org.eclipse.persistence.platform.server.NoServerPlatformDetector.checkPlatform(NoServerPlatformDetector.java:28)
at org.eclipse.persistence.platform.server.ServerPlatformUtils.detectServerPlatform(ServerPlatformUtils.java:58)
at org.eclipse.persistence.internal.jpa.IsolatedHashMap.<clinit>(IsolatedHashMap.java:48)
... 7 more
Clearly the error occurs when I'm creating the EntityManagerFactory in the DAO class (the same one that is working with the JSP).
Here is my POM :
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>CitizenWeb</groupId>
<artifactId>com.citizenweb</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<sourceDirectory>src</sourceDirectory>
<resources>
<resource>
<directory>src</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<!-- Generic properties -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Web -->
<jsp.version>2.2</jsp.version>
<jstl.version>1.2</jstl.version>
<servlet.version>2.5</servlet.version>
<!-- Logging -->
<logback.version>1.0.13</logback.version>
<slf4j.version>1.7.5</slf4j.version>
<!-- Test -->
<junit.version>4.11</junit.version>
</properties>
<dependencies>
<!-- Other Web dependencies -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${servlet.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp.version}</version>
<scope>provided</scope>
</dependency>
<!-- Logging with SLF4J & LogBack -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<scope>runtime</scope>
</dependency>
<!-- EclipseLink -->
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.core</artifactId>
<version>2.5.2</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa</artifactId>
<version>2.5.2</version>
</dependency>
<!-- MySQL DB -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.37</version>
</dependency>
</dependencies>
</project>
If needed, here is my persistence.xml :
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="CitizenWeb" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<mapping-file>META-INF/orm.xml</mapping-file>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/citizen"/>
<property name="javax.persistence.jdbc.user" value="user"/>
<property name="javax.persistence.jdbc.password" value="user"/>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
<property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
</properties>
</persistence-unit>
</persistence>
Entities mapping is managed with an orm.xml
Here's also the beginning of the DAO class :
package dao;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.Persistence;
import javax.persistence.Query;
import entities.Address;
import entities.GroupAssoc;
import entities.RightsGranted;
import entities.User;
public class LayerDAO implements IFLayerDAOLocal {
EntityManager em = Persistence.createEntityManagerFactory("CitizenWeb").createEntityManager();
public void createUser(User user) {
System.out.println("DAO > addUser > "+em.hashCode());
em.getTransaction().begin();
em.persist(user);
em.getTransaction().commit();
}
Nothing has been changed here, neither in the persistence.xml
The "only" changes are in the build.path because of the change in the nature of project (JPA -> Web Dynamic+JPA). Maven has solved the problem with the webserver and the mysql connector, but now the app side is broken.
Do you see something I don't ?
Thanx.

In the buildpath of the project, I added an alternate "JRE System Library".
I previously had : JDK 1.8.0_66
I added : JRE 1.8.0_66
Now JSP works and also java Run class.

Upgrading hibernate from 3.2.4.sp1 to a suitable version

Kindly provide some details which help to upgrade the hibernate version 3.2.4.sp1 to a suitable version.
We have already updated the Java runtime, Server OS and Database Server as well as some minor changes in the source code.
Following is the details of my Java Swing Application.
Application uses Java web-start technology which communicates with the Servlets running on Tomcat 7.
The Application is created some 8-9 years back. We keep on enhancing and bug fixing the application till date.
DB is SQL Server 2012.
Server Machine: Windows 64 bit 2008 R2 Enterprise Server
Java 7 update 25 64 bit
DB Driver: jtds-1.2
Ehcache version 1.2.3
The observations are as follows:
There is no ehcache.xml file int the project.
We are not using any annotation in Entity class or any other parts in the application.
Found that Ehcache 1.7.2 and above supports Java 1.5 and 1.6 at runtime.
Found that the ehcache some times creates deadlock not sure about aver version but visit the following link: http://jira.terracotta.org/jira/browse/EHC-918.
Following is my hibernate.cfg.xml for reference:
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">net.sourceforge.jtds.jdbc.Driver</property>
<property name="connection.url">jdbc:jtds:sqlserver://<ip>:<port>/TestDB</property>
<property name="connection.username">username</property>
<property name="connection.password">password</property>
<property name="hibernate.jdbc.batch_size">10</property>
<property name="c3p0.acquire_increment">1</property>
<property name="c3p0.max_size">5</property>
<property name="c3p0.max_statements">0</property>
<property name="c3p0.min_size">3</property>
<property name="c3p0.timeout">20</property> <!-- seconds -->
<property name="c3p0.idle_test_period">60</property> <!-- seconds -->
<property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
<property name="show_sql">false</property>
<property name="format_sql">true</property>
<property name="use_sql_comments">true</property>
<property name="generate_statistics">true</property>
<property name="hibernate.connection.provider_class">somepackage.C3P0ConnectionProvider</property>
<!-- Followed by our entity class mapping -->
<mapping resource="Batch.hbm.xml"/>
</session-factory>
</hibernate-configuration>
In this we are not specifying the second level hibernate cache, but I believe we are using some class in ehcache-1.2.3.jar as the cache provider since its there in the class path. When I go through the hibernate changelog I could see the default cache providers are different in some of the versions.
We are facing some performance and deadlock issue in current version of the application.
Kindly advice me a suitable version of hibernate so that I can upgrade to it without any issues.

<modelVersion>4.0.0</modelVersion>
<groupId>com.ranga</groupId>
<artifactId>HibernateApp2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>HibernateApp2</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<!-- JBoss repository for Hibernate -->
<repositories>
<repository>
<id>JBoss repository</id>
<url>http://repository.jboss.org/nexus/content/groups/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
<!-- Hibernate framework -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.1.12.Final</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.12.1.GA</version>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>4.1.12.Final</version>
</dependency>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-core</artifactId>
<version>2.4.0</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.5</version>
</dependency>
</dependencies>