I am trying to create a test application that accesses a postgres database using JavaEE and Wildly 9.
So I downloaded Wildfly 9 and followed these instructions to add the driver to it. When I run
/subsystem=datasources:installed-drivers-list
I get
{
"driver-name" => "postgresql-9.4-1201.jdbc41.jar",
"deployment-name" => "postgresql-9.4-1201.jdbc41.jar",
"driver-module-name" => undefined,
"module-slot" => undefined,
"driver-datasource-class-name" => undefined,
"driver-xa-datasource-class-name" => undefined,
"driver-class-name" => "org.postgresql.Driver",
"driver-major-version" => 9,
"driver-minor-version" => 4,
"jdbc-compliant" => false
}
so it seems ok.
I also copied the jar ( postgresql-9.4-1201.jdbc41.jar ) file to the deployment folder in Wildfly.
I added this dependency to my pom.xml:
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.4-1201-jdbc41</version>
</dependency>
and this is my persistence.xml:
<persistence xmlns="http://java.sun.com/xml/ns/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">
<persistence-unit name="postgres">
<properties>
<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/test" />
<property name="hibernate.connection.username" value="test" />
<property name="hibernate.connection.password" value="test" />
<!-- <property name="hibernate.show_sql" value="true"/>
<property name="hibernate.flushMode" value="FLUSH_AUTO" />
<property name="hibernate.hbm2ddl.auto" value="update" />-->
</properties>
</persistence-unit>
</persistence>
But overtime I try to run my application I get:
java.lang.ClassNotFoundException: Could not load requested class :
org.postgresql.Driver
What am I missing? I can't find any other procedure to do in order to make it work. I am sitting in this problem for some hours now and I can't see anything else I can do.
edit: I created a data source and it works (so the dependencies are all there, there must be something wrong with the persistence.xml itself). I would rather have it working using the persistence.xml file, due to configurability.
here is my datasource as configured in the standalone.xml
<datasource jta="true" jndi-name="java:/PostgresDS" pool-name="PostgresDS" enabled="true" use-ccm="true">
<connection-url>jdbc:postgresql://localhost:5432/stats</connection-url>
<driver-class>org.postgresql.Driver</driver-class>
<driver>postgresql</driver>
<security>
<user-name>test</user-name>
<password>test</password>
</security>
<validation>
<valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLValidConnectionChecker"/>
<background-validation>true</background-validation>
<exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLExceptionSorter"/>
</validation>
</datasource>
Related
I have troubles with character encoding in my JPA test class.
In my h2 in memory database I have this insert query :
INSERT INTO MYTABLE (ID,FIELD1,FIELD2) VALUES (100,'ABC','Réclamation');
(please notice the "é" character in "Réclamation")
In my JUnit Test, I try to assert that the value of FIELD2 column is equal to "Réclamation" (which is the case as you can see)
But it fails with the following error :
org.junit.ComparisonFailure: expected:R[é]clamation but
was: R[�]clamation
I wonder if there is a way to specify character encoding in persistence.xml file (maybe ? or somewhere else)
Here is my persistence.xml test file :
<?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="myTestPU">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.myproject.myclass1</class>
<class>com.myproject.myclass2</class>
<properties>
<property
name="javax.persistence.schema-generation.database.action"
value="none" />
<property
name="javax.persistence.sharedCache.mode"
value="ENABLE_SELECTIVE" />
<property
name="javax.persistence.jdbc.url"
value="jdbc:h2:mem:test;INIT=RUNSCRIPT FROM 'classpath:ddl/schema.sql'\;RUNSCRIPT FROM 'classpath:ddl/data.sql'" />
<property
name="javax.persistence.jdbc.driver"
value="org.h2.Driver" />
<property
name="hibernate.dialect"
value="org.hibernate.dialect.H2Dialect" />
<property
name="hibernate.show_sql"
value="true" />
<property
name="hibernate.format_sql"
value="true" />
</properties>
</persistence-unit>
</persistence>
I've already tried these solutions :
adding the following properties in persistence.xml test file :
<property
name="hibernate.connection.characterEncoding"
value="utf8" />
<property
name="hibernate.connection.useUnicode"
value="true" />
<property
name="hibernate.connection.charSet"
value="UTF-8" />
adding ?useUnicode=yes&characterEncoding=UTF-8 in my URL property
None of them worked for me...
NB : I don't use spring framework in my application
I had my insert queries in an import.sql file and those values were encoded incorrectly.
Adding the property
<property name="hibernate.hbm2ddl.charset_name" value="UTF-8" />
fixed it for me.
If you have an older version of hibernate (pre 5.2.3 apparently), maybe try the other solutions in this thread:
Hibernate/JPA import.sql utf8 characters corrupted
I am not able to access the postgresql db properties, which are in small letters. I would like to access the properties using camelCase. Please suggest me the required configuration .
for configure postgreSQL using JPA you can use this persistence.xml
For that you have to create one folder called "META-INF" in your project. and in that folder you have to store this file.
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="give_some_name" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<properties>
<property name="dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
<property name="javax.persistence.jdbc.driver" value="org.postgresql.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:postgresql://localhost:5432/database_name" />
<property name="javax.persistence.jdbc.user" value="username" />
<property name="javax.persistence.jdbc.password" value="password" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.hbm2ddl.auto" value="update" />
</properties>
</persistence-unit>
</persistence>
Or using hibernate.cfg.xml
(Here no need to create "META-INF folder")
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/database_name</property>
<property name="hibernate.connection.username">username</property>
<property name="hibernate.connection.password">password</property>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">create</property>
<mapping resource="hibernate.hbm.xml"/>
</session-factory>
</hibernate-configuration>
I used logging in persistence.xml for EclipseLink JPA implementation, from
stackoverflow reference
but the parameters appears as ? how can i show them properly in my glassfish log output window.
The log level configuration is included in the definition of the persistence unit in the persistence.xml file, as follows:
The logging of SQL parameters can be enabled, or disabled through the following properties:
Disable:
Enable:
<property name="eclipselink.logging.level.sql" value="FINE"/>
<property name="eclipselink.logging.parameters" value="true"/>
full 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="ProjPU" transaction-type="JTA">
<jta-data-source>jdbc/POS</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="eclipselink.weaving" value="static" />
<property name="eclipselink.logging.level.sql" value="FINEST" />
<property name="eclipselink.logging.level" value="FINEST" />
<property name="eclipselink.logging.level.cache" value="FINEST" />
<property name="eclipselink.logging.parameters" value="true" />
</properties>
</persistence-unit>
</persistence>
Note: Setting eclipselink.logging.level to FINE is not sufficient (as of EclipseLink 2.4.0 - Juno), you have to set eclipselink.logging.level.sql to FINE.
This property will also control how parameters are logged in exceptions. By default parameters are only logged for log level < CONFIG.
Refernce:Documentation,Wiki Ecipse link
I am setting up a minimal working example where I use EclipseLink in a Java EE (JSF) project. My example works perfectly with the following configuration and code:
persistence.xml
<persistence
version="2.0"
xmlns="http://java.sun.com/xml/ns/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"
>
<persistence-unit name="issat_PU_Local" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>pro.entity.Utilisateur</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/issat" />
<property name="javax.persistence.jdbc.user" value="java" />
<property name="javax.persistence.jdbc.password" value="JaVa" />
<property name="eclipselink.logging.level.sql" value="FINE" />
<property name="eclipselink.logging.parameters" value="true"/>
</properties>
</persistence-unit>
</persistence>
Since I don't want to use JTA I am using RESOURCE_LOCAL as transaction type and perfectly leaving with "manually" handling transaction inside my DAO.
I now want to use BoneCP connection pool with my example.
How should I precisely modify my persistence.xml to do that? I found many configuration examples in the internet using also Hibernate, but I want to stay with EclipseLink.
I couldn't do it with bonecp, but I could get a pool connection with C3PO.
I followed this link : http://javabeginnerstutorial.com/hibernate/connection-pooling-with-hibernate-4/
I copied the dependency and the properties but, instead of <property name="hibernate.c3p0.min_size">1</property> put the value in the tag like this<property name="hibernate.c3p0.min_size" value="1"/>, otherwise I got an error.
Finally mi persitence.xml look this way:
And created a new user, I have granted it select/update delete rights on specific tables as required.
Will this be enough to use persistence, or will jboss need admin rights as well ?
No, it shouldn't need admin rights.
Easiest answer - try it and see.
No, no need to assign admin rights. It will enough by using persistence.xml
please add following in your persistence.xml
<persistence-unit name="abc" transaction-type="JTA"> and
<jta-data-source>java:jboss/datasources/data_source_name</jta-data-source>
persistence.xml should like this:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/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">
<persistence-unit name="abc" transaction-type="JTA">
<jta-data-source>java:jboss/datasources/data_source_name</jta-data-source>
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<!-- Map entity classes -->
<class> com.packege.classname </class>
<properties>
<!-- Properties for Hibernate -->
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/DB_NAME" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="root" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
and provide the persistence unit name to createEntityManagerFactory method in Hibernate util class.
Persistence.createEntityManagerFactory("abc");