Question

我在运行项目时遇到此错误，无法确定正在进行的操作。

java.lang.NoClassDefFoundError：无法初始化类 com.sepa.util.HibernateUtil at com.sepa.controller.InicioBean.getProvincias（InicioBean.java:27）at at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）在 sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:498）at javax.el.BeanELResolver.getValue（BeanELResolver.java:363）at at com.sun.faces.el.DemuxCompositeELResolver._getValue（DemuxCompositeELResolver.java:176）在 com.sun.faces.el.DemuxCompositeELResolver.getValue（DemuxCompositeELResolver.java:203）在com.sun.el.parser.AstValue.getValue（AstValue.java:140）at com.sun.el.parser.AstValue.getValue（AstValue.java:204）at at com.sun.el.ValueExpressionImpl.getValue（ValueExpressionImpl.java:226）在 org.jboss.weld.el.WeldValueExpression.getValue（WeldValueExpression.java:50）在 com.sun.faces.facelets.el.TagValueExpression.getValue（TagValueExpression.java:109）在 javax.faces.component.ComponentStateHelper.eval（ComponentStateHelper.java:194）在 javax.faces.component.ComponentStateHelper.eval（ComponentStateHelper.java:182）在 javax.faces.component.UISelectItem.getItemValue（UISelectItem.java:208）在 com.sun.faces.renderkit.SelectItemsIterator.initializeItems（SelectItemsIterator.java:197）在 com.sun.faces.renderkit.SelectItemsIterator.hasNext（SelectItemsIterator.java:135）在 com.sun.faces.renderkit.html_basic.MenuRenderer.renderOptions（MenuRenderer.java:762）在 com.sun.faces.renderkit.html_basic.MenuRenderer.renderSelect（MenuRenderer.java:847）在 com.sun.faces.renderkit.html_basic.MenuRenderer.encodeEnd（MenuRenderer.java:297）在 javax.faces.component.UIComponentBase.encodeEnd（UIComponentBase.java:920）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1863）在javax.faces.render.Renderer.encodeChildren（Renderer.java:176）at javax.faces.component.UIComponentBase.encodeChildren（UIComponentBase.java:890）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1856）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1859）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1859）在 com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView（FaceletViewHandlingStrategy.java:458）在 com.sun.faces.application.view.MultiViewHandler.renderView（MultiViewHandler.java:134）在 javax.faces.application.ViewHandlerWrapper.renderView（ViewHandlerWrapper.java:337）在 com.sun.faces.lifecycle.RenderResponsePhase.execute（RenderResponsePhase.java:120）在com.sun.faces.lifecycle.Phase.doPhase（Phase.java:101）at com.sun.faces.lifecycle.LifecycleImpl.render（LifecycleImpl.java:219）在javax.faces.webapp.FacesServlet.service（FacesServlet.java:659）at org.apache.catalina.core.StandardWrapper.service（StandardWrapper.java:1682）在 org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:318）在 org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:160）在 org.apache.catalina.core.StandardPipeline.doInvoke（StandardPipeline.java:734）在 org.apache.catalina.core.StandardPipeline.invoke（StandardPipeline.java:673）在com.sun.enterprise.web.WebPipeline.invoke（WebPipeline.java:99）at org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:174）在 org.apache.catalina.connector.CoyoteAdapter.doService（CoyoteAdapter.java:416）在 org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:283）在 com.sun.enterprise.v3.services.impl.ContainerMapper $ HttpHandlerCallable.call（ContainerMapper.java:459）在 com.sun.enterprise.v3.services.impl.ContainerMapper.service（ContainerMapper.java:167）在 org.glassfish.grizzly.http.server.HttpHandler.runService（HttpHandler.java:206）在 org.glassfish.grizzly.http.server.HttpHandler.doHandle（HttpHandler.java:180）在 org.glassfish.grizzly.http.server.HttpServerFilter.handleRead（HttpServerFilter.java:235）在 org.glassfish.grizzly.filterchain.ExecutorResolver $ 9.execute（ExecutorResolver.java:119）在 org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter（DefaultFilterChain.java:283）在 org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart（DefaultFilterChain.java:200）在 org.glassfish.grizzly.filterchain.DefaultFilterChain.execute（DefaultFilterChain.java:132）在 org.glassfish.grizzly.filterchain.DefaultFilterChain.process（DefaultFilterChain.java:111）在 org.glassfish.grizzly.ProcessorExecutor.execute（ProcessorExecutor.java:77）在 org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent（TCPNIOTransport.java:536）在 org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent（AbstractIOStrategy.java:112）在 org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0（WorkerThreadIOStrategy.java:117）在 org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access $ 100（WorkerThreadIOStrategy.java:56）在 org.glassfish.grizzly.strategies.WorkerThreadIOStrategy $ WorkerThreadRunnable.run（WorkerThreadIOStrategy.java:137）在 org.glassfish.grizzly.threadpool.AbstractThreadPool $ Worker.doWork（AbstractThreadPool.java:591）在 org.glassfish.grizzly.threadpool.AbstractThreadPool $ Worker.run（AbstractThreadPool.java:571）在java.lang.Thread.run（Thread.java:745）

这是我的InicioBean类

package com.sepa.controller;

import com.sepa.model.Provincia;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;

import java.util.List;

import com.sepa.util.HibernateUtil;

import org.hibernate.Session;
import org.hibernate.Query;

@ManagedBean(name = "inicioBean", eager = true)
@RequestScoped
public class InicioBean {

    private Provincia provincia;
    List<Provincia> provincias;
    String algo;

    public List<Provincia> getProvincias() {
        Session session = null;
        provincias = null;
        try {
            session = HibernateUtil.getSessionFactory().openSession();
            Query query = session.createQuery("from Provincia");
            provincias = (List<Provincia>) query.list();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        } finally {
            if (session != null) {
                session.close();
            }
        }
        return provincias;
    }
}

这是我的HibernateUtil类

package com.sepa.util;

import org.hibernate.cfg.Configuration;
import org.hibernate.SessionFactory;

public class HibernateUtil {

    private static final SessionFactory sessionFactory;

    static {
        try {
            // Create the SessionFactory from standard (hibernate.cfg.xml)
            // config file.
            sessionFactory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Log the exception.
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

这是我的hibernate.cfg.xml

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/SEPA</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">sepaweb</property>
        <mapping class="com.sepa.model.Provincia"/>
    </session-factory>
</hibernate-configuration>

这是我的pom

<?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.sepa</groupId>
    <artifactId>SEPAWeb</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>SEPAWeb</name>

    <dependencies>
        <dependency>
            <groupId>org.glassfish</groupId>
            <artifactId>javax.faces</artifactId>
            <version>2.2.7</version>
        </dependency>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-web-api</artifactId>
            <version>7.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.1.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.1.0.Final</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

我真的不知道发生了什么，我尝试了很多东西，更改了hibernate.cfg.xml的文件夹，尝试了很多HibernateUtil文件但我无法获得这项工作。

Project's structure

感谢！

Answer 1

解决了这个问题。 HibernateUtil不正确。更改为：

import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.SessionFactoryBuilder;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;

public class HibernateUtil {
    private static SessionFactory sessionFactory;

    private static SessionFactory buildSessionFactory() {
        StandardServiceRegistry standardRegistry = new StandardServiceRegistryBuilder().
                configure("hibernate.cfg.xml").build();

        Metadata metadata = new MetadataSources(standardRegistry).getMetadataBuilder().
                build();

        SessionFactoryBuilder sessionFactoryBuilder = metadata.getSessionFactoryBuilder();

        SessionFactory sessionFactory = sessionFactoryBuilder.build();

        return sessionFactory;
    }

    public static SessionFactory getSessionFactory() {
        if (sessionFactory == null) {
            sessionFactory = buildSessionFactory();
        }
        return sessionFactory;
    }
}

如果您正在使用glassfish，则需要在glassfish4 \ glassfish \ modules中粘贴jboss-logging-3.3.0.Final.jar。（重命名为jboss-logging并替换另一个）

无法让HibernateUtil工作

1 个答案: