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J'ai essayé toute la journée et googlé le **** sur le web ... en vain. Vous êtes mon dernier espoir:Impossible de faire fonctionner JPA2 avec Hibernate et Maven
Voici mon code:
L'entité:
package sas.test.model;
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity
public class Employee {
@Id private int id;
private String name;
private long salary;
public Employee() {}
public Employee(int id) { this.id = id; }
public int getId() { return id; }
public void setId(int id) { this.id = id; }
public String getName() { return name; }
public void setName(String name) { this.name = name; }
public long getSalary() { return salary; }
public void setSalary (long salary) { this.salary = salary; }
}
La classe de service:
package sas.test.dao;
import sas.test.model.Employee;
import javax.persistence.*;
import java.util.List;
public class EmployeeService {
protected EntityManager em;
public EmployeeService(EntityManager em) {
this.em = em;
}
public Employee createEmployee(int id, String name, long salary) {
Employee emp = new Employee(id);
emp.setName(name);
emp.setSalary(salary);
em.persist(emp);
return emp;
}
public void removeEmployee(int id) {
Employee emp = findEmployee(id);
if (emp != null) {
em.remove(emp);
}
}
public Employee raiseEmployeeSalary(int id, long raise) {
Employee emp = em.find(Employee.class, id);
if (emp != null) {
emp.setSalary(emp.getSalary() + raise);
}
return emp;
}
public Employee findEmployee(int id) {
return em.find(Employee.class, id);
}
}
Et la classe principale:
package sas.test.main;
import javax.persistence.*;
import java.util.List;
import sas.test.model.Employee;
import sas.test.dao.EmployeeService;
public class ExecuteMe {
public static void main(String[] args) {
EntityManagerFactory emf =
Persistence.createEntityManagerFactory("EmployeeService");
EntityManager em = emf.createEntityManager();
EmployeeService service = new EmployeeService(em);
// create and persist an employee
em.getTransaction().begin();
Employee emp = service.createEmployee(158, "John Doe", 45000);
em.getTransaction().commit();
System.out.println("Persisted " + emp);
// find a specific employee
emp = service.findEmployee(158);
System.out.println("Found " + emp);
// find all employees
// List<Employee> emps = service.findAllEmployees();
// for (Employee e : emps)
// System.out.println("Found employee: " + e);
// update the employee
em.getTransaction().begin();
emp = service.raiseEmployeeSalary(158, 1000);
em.getTransaction().commit();
System.out.println("Updated " + emp);
// remove an employee
em.getTransaction().begin();
service.removeEmployee(158);
em.getTransaction().commit();
System.out.println("Removed Employee 158");
// close the EM and EMF when done
em.close();
emf.close();
}
}
Enfin mes confs.
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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>Test_JPA_CRUD</groupId>
<artifactId>Test_JPA_CRUD</artifactId>
<packaging>jar</packaging>
<version>1.0</version>
<name>Test_JPA_CRUD</name>
<url>http://maven.apache.org</url>
<repositories>
<repository>
<id>maven2-repository.dev.java.net</id>
<name>Java.net Repository for Maven</name>
<url>http://download.java.net/maven/2/
</url>
<layout>default</layout>
</repository>
<repository>
<id>maven.org</id>
<name>maven.org Repository</name>
<url>http://repo1.maven.org/maven2</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.1</version>
<scope>test</scope>
</dependency>
<!--
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>6.0</version>
</dependency>
-->
<!--
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0</version>
</dependency>
-->
<!-- JPA2 provider -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>3.4.0.GA</version>
</dependency>
<!-- JDBC driver -->
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<version>10.5.3.0_1</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.3.2.GA</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>ejb3-persistence</artifactId>
<version>3.3.2.Beta1</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>3.4.0.GA</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.5.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.14</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- compile with mvn assembly:assembly -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.2</version>
</plugin>
<!-- compile with mvn assembly:assembly -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2-beta-2</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>sas.test.main.ExecuteMe</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<phase>package</phase>
</execution>
</executions>
</plugin>
<plugin>
<!-- Force UTF-8 & Java-Version 1.6 -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
<!--<encoding>utf-8</encoding>-->
</configuration>
</plugin>
</plugins>
</build>
</project>
et persistence.xml, qui, je vous le promets, est dans le classpath de la cible:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
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_1_0.xsd
http://java.sun.com/xml/ns/persistence ">
<persistence-unit name="EmployeeService" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>sas.test.model.Employee</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.DerbyDialect"/>
<property name="hibernate.show_sql" value="true"/>
<property name="javax.persistence.jdbc.url" value="jdbc:derby:webdb;create=true"/>
</properties>
</persistence-unit>
</persistence>
Comme vous avez pu le constater à partir du code commenté , J'ai essayé les deux, l'implémentation Hibernate et J2EE 6 de JPA2.0, cependant, les deux ont échoué. Le code mentionné ci-dessus se termine par erreur suivant:
log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.UnsupportedOperationException: The user must supply a JDBC connection
at org.hibernate.connection.UserSuppliedConnectionProvider.getConnection(UserSuppliedConnectionProvider.java:54)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:142)
Toute idée de ce qui se passe mal? Toute démo maven/JPA2 "Hello World" qui fonctionne réellement? Je ne pouvais obtenir aucun de ceux fournis par la recherche de Google en cours d'exécution.
Merci d'avance.
Merci beaucoup! Ça marche! God save stackoverflow et ses participants! –
comment savez-vous quel hibernate-validator est valide pour hibernate 3.5.1-Final? – Phil