異常在線程「主」java.lang.NoClassDefFoundError：org/dom4j/io/STAXEventReader

Question

我正在使用JPA +休眠5.我和dom4j有問題。

非常感謝。

類Empleado.java - >

@Entity 
@Table(name = "EMPLEADO") 
public class Empleado implements Serializable { 

    private static final long serialVersionUID = 1L; 

    @Id 
    @Column(name = "COD_EMPLEADO") 
    private Long codigo; 

    @Column(name = "APELLIDOS") 
    private String apellidos; 

    @Column(name = "NOMBRE") 
    private String nombre; 

    @Column(name = "FECHA_NACIMIENTO") 
    private Date fechaNacimiento; 

    public Empleado() { 

    } 

    public Empleado(Long codigo, String apellidos, String nombre, Date fechaNacimiento) { 

     this.codigo = codigo; 
     this.apellidos = apellidos; 
     this.nombre = nombre; 
     this.fechaNacimiento = fechaNacimiento; 
    } 

    public Long getCodigo() { 
     return codigo; 
    } 

    public void setCodigo(Long codigo) { 
     this.codigo = codigo; 
    } 

    public String getApellidos() { 
     return apellidos; 
    } 

    public void setApellidos(String apellidos) { 
     this.apellidos = apellidos; 
    } 

    public String getNombre() { 
     return nombre; 
    } 

    public void setNombre(String nombre) { 
     this.nombre = nombre; 
    } 

    public Date getFechaNacimiento() { 
     return fechaNacimiento; 
    } 

    public void setFechaNacimiento(Date fechaNacimiento) { 
     this.fechaNacimiento = fechaNacimiento; 
    } 

    @Override 
    public String toString() { 
     return "Empleado [codigo=" + codigo + ", apellidos=" + apellidos + ", nombre=" + nombre + ", fechaNacimiento=" 
       + fechaNacimiento + "]"; 
    } 



} 

類TestEmpleado： - >

public class TestEmpleados { 

    private static EntityManager manager; 

    private static EntityManagerFactory emf; 

    @SuppressWarnings("unchecked") 
    public static void main(String[] args) { 

     emf = Persistence.createEntityManagerFactory("Persistencia"); 
     manager = emf.createEntityManager(); 

     List<Empleado> empleados = (List<Empleado>) manager.createQuery("FROM Empleado").getResultList(); 
     System.out.println(empleados.size() + "Empleados"); 


    } 

} 

這是我的persistence.xml： - >

<?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="Persistencia"> 

    <class>es.makigas.hibernate.modelo.Empleado</class> 

     <properties> 
      <property name="javax.persistence.jdbc.driver" value="org.h2.Driver" /> 
      <property name="javax.persistence.jdbc.url" value="jdbc:h2:mem/test" /> 
      <property name="javax.persistence.jdbc.user" value="sa" /> 
      <property name="javax.persistence.jdbc.password" value="" /> 


      <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" /> 
      <property name="hibernate.hbm2ddl.auto" value="create-drop" /> 
     </properties> 
    </persistence-unit> 

</persistence> 

而在最後這是我的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>es.makigas</groupId> 
    <artifactId>hibernate-jpa-ejemplo</artifactId> 
    <version>1.0.0-SNAPSHOT</version> 



    <dependencies> 

    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-entitymanager</artifactId> 
     <version>5.1.0.Final</version> 
    </dependency> 

     <dependency> 
      <groupId>org.hibernate</groupId> 
      <artifactId>hibernate-core</artifactId> 
      <version>5.1.0.Final</version> 
     </dependency> 

     <dependency> 
      <groupId>javax.persistence</groupId> 
      <artifactId>persistence-api</artifactId> 
      <version>1.0.2</version> 
     </dependency> 

     <dependency> 
      <groupId>com.h2database</groupId> 
      <artifactId>h2</artifactId> 
      <version>1.4.191</version> 
     </dependency> 




    </dependencies> 





    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <version>3.6.1</version> 
       <configuration> 
        <source>1.8</source> 
        <target>1.8</target> 
       </configuration> 
      </plugin> 
     </plugins> 

    </build> 

</project> 

當我執行我收到以下錯誤TestEmpleados - >

mar 17, 2017 11:18:07 AM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation 
INFO: HHH000204: Processing PersistenceUnitInfo [ 
    name: Persistencia 
    ...] 
mar 17, 2017 11:18:07 AM org.hibernate.Version logVersion 
INFO: HHH000412: Hibernate Core {5.1.0.Final} 
mar 17, 2017 11:18:07 AM org.hibernate.cfg.Environment <clinit> 
INFO: HHH000206: hibernate.properties not found 
mar 17, 2017 11:18:07 AM org.hibernate.cfg.Environment buildBytecodeProvider 
INFO: HHH000021: Bytecode provider name : javassist 
Exception in thread "main" java.lang.NoClassDefFoundError: org/dom4j/io/STAXEventReader 
    at org.hibernate.boot.spi.XmlMappingBinderAccess.<init>(XmlMappingBinderAccess.java:43) 
    at org.hibernate.boot.MetadataSources.<init>(MetadataSources.java:87) 
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:180) 
    at org.hibernate.jpa.boot.spi.Bootstrap.getEntityManagerFactoryBuilder(Bootstrap.java:34) 
    at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilder(HibernatePersistenceProvider.java:165) 
    at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:114) 
    at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:71) 
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:52) 
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55) 
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39) 
    at es.makigas.hibernate.tests.TestEmpleados.main(TestEmpleados.java:19) 
Caused by: java.lang.ClassNotFoundException: org.dom4j.io.STAXEventReader 
    at java.net.URLClassLoader.findClass(Unknown Source) 
    at java.lang.ClassLoader.loadClass(Unknown Source) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) 
    at java.lang.ClassLoader.loadClass(Unknown Source) 
    ... 11 more 

Answer 1

Hibernate core 5.1.0.Final include dom4j-1.6.1 jar which throws this error. To fix this, need to exclude dom4j-1.6.1 from hibernate-core and include dom4j-1.6 in your pom.

<dependency> 
    <groupId>org.hibernate</groupId> 
    <artifactId>hibernate-core</artifactId> 
    <version>5.1.0.Final</version> 
    <exclusions> 
    <exclusion> 
     <artifactId>jta</artifactId> 
     <groupId>javax.transaction</groupId> 
    </exclusion> 
    <!-- Exclude SLF4j to avoid version conflicts (we have 1.6.6, this drags 
      in 1.6.1) --> 
    <exclusion> 
     <groupId>org.slf4j</groupId> 
     <artifactId>slf4j-api</artifactId> 
    </exclusion> 
    <!-- Exclude dom4j to avoid version conflicts (we have 1.6, this drags 
      in 1.6.1) --> 
    <exclusion> 
     <groupId>dom4j</groupId> 
     <artifactId>dom4j</artifactId> 
    </exclusion> 
    </exclusions> 
</dependency> 

<!-- add dom4j in the correct version --> 
<dependency> 
    <groupId>dom4j</groupId> 
    <artifactId>dom4j</artifactId> 
    <version>1.6</version> 
</dependency> 

Answer 2

我在pom.xml中看到有兩個相關性不匹配 - Hibernate的5.1.0和JPA 1.0 .2 如果您想使用Hibernate 5.1.0，那麼您應該使用JPA 2.1。請做出這個改變，它應該可以正常工作。

<dependency> 
    <groupId>org.eclipse.persistence</groupId> 
    <artifactId>javax.persistence</artifactId> 
    <version>2.1.0</version> 
</dependency>