Hibernate AbstractMethodError

Question

我正在一个gradle项目上使用spring、hibernate和spring data jpa的最新版本，但是我遇到了AbstractMethoderRor异常。下面是堆栈跟踪的一部分

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'EntityManagerFactory' defined in class path resource [com/ashken/config/JPADataConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is java.lang.AbstractMethodError
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[na:na]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123) ~[na:na]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018) ~[na:na]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[na:na]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[na:na]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[na:na]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[na:na]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[na:na]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[na:na]
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351) ~[na:na]
    ... 93 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is java.lang.AbstractMethodError
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[na:na]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[na:na]
    ... 102 common frames omitted
Caused by: java.lang.AbstractMethodError: null
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:278) ~[na:na]
    at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444) ~[na:na]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:802) ~[na:na]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:60) ~[na:na]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:343) ~[na:na]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:319) ~[na:na]
    at com.ashken.config.JPADataConfig.entityManagerFactory(JPADataConfig.java:56) ~[na:na]
    at com.ashken.config.JPADataConfig$$EnhancerBySpringCGLIB$$a3ded6c2.CGLIB$entityManagerFactory$1(<generated>) ~[na:na]
    at com.ashken.config.JPADataConfig$$EnhancerBySpringCGLIB$$a3ded6c2$$FastClassBySpringCGLIB$$91e60d8f.invoke(<generated>) ~[na:na]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[na:na]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:355) ~[na:na]
    at com.ashken.config.JPADataConfig$$EnhancerBySpringCGLIB$$a3ded6c2.entityManagerFactory(<generated>) ~[na:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0]
    at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[na:na]

这是gradle档案

apply plugin: 'java'
apply plugin: 'eclipse-wtp'
apply plugin: 'org.akhikhl.gretty'
apply plugin: "war"
war {
    baseName = 'Test'
    version = '1.0'
}

//sourceCompatibility = 1.7

repositories {
    mavenLocal()
    mavenCentral()
     maven { url "http://repository.pentaho.org/artifactory/repo/" }
    maven { url "https://repo.spring.io/libs-release" }
}

dependencies {
  // Dependencies goes here

  compile 'javax.servlet:javax.servlet-api:3.1.0'
  compile 'org.springframework:spring-webmvc:4.2.5.RELEASE'
  compile 'org.springframework:spring-context-support:4.2.5.RELEASE'
  compile 'org.springframework:spring-orm:4.2.5.RELEASE'
  compile 'org.springframework:spring-jdbc:4.2.5.RELEASE'
  compile 'org.springframework:spring-tx:4.2.5.RELEASE'
  compile 'org.springframework:spring-aop:4.2.5.RELEASE'

  compile 'org.springframework.security:spring-security-core:4.0.4.RELEASE'
  compile 'org.springframework.security:spring-security-web:4.0.4.RELEASE'
  compile 'org.springframework.security:spring-security-config:4.0.4.RELEASE'
  compile 'org.springframework.security.oauth:spring-security-oauth2:2.0.8.RELEASE'

  compile 'org.springframework.data:spring-data-jpa:1.9.4.RELEASE'
  compile 'org.springframework.data:spring-data-mongodb:1.8.2.RELEASE'
  compile 'org.springframework.data:spring-data-envers:0.3.0.RELEASE'

  compile 'javax.servlet:jstl:1.2'
  compile 'org.hibernate:hibernate-core:5.1.0.Final'
  compile 'org.hibernate:hibernate-entitymanager:5.1.0.Final'
  compile 'org.hibernate:hibernate-validator:5.2.4.Final'

  compile 'org.apache.commons:commons-dbcp2:2.1.1'

  compile 'mysql:mysql-connector-java:5.1.38'
  compile 'org.postgresql:postgresql:9.4.1207.jre7'


  compile 'com.fasterxml.jackson.core:jackson-core:2.7.3'
  compile 'com.fasterxml.jackson.core:jackson-databind:2.7.3'
  compile 'com.fasterxml.jackson.core:jackson-annotations:2.7.3'

  compile 'org.apache.poi:poi:3.13'
  compile 'net.sf.jasperreports:jasperreports:6.2.0'

  compile 'org.apache.logging.log4j:log4j-core:2.5'
  compile 'org.apache.logging.log4j:log4j-api:2.5'
  compile 'commons-fileupload:commons-fileupload:1.3.1'
  compile 'commons-io:commons-io:2.4'
  compile 'commons-logging:commons-logging:1.2'

  compile 'com.itextpdf:itextpdf:5.5.8'
  compile 'com.lowagie:itext:2.1.7'
  compile 'org.olap4j:olap4j:1.1.0'

  compile 'org.thymeleaf:thymeleaf-spring4:3.0.0.BETA01'
}

//Gretty Embedded Jetty
buildscript {
  repositories {
    jcenter()
  }

  dependencies {
    classpath 'org.akhikhl.gretty:gretty:+'
  }
}
gretty {
  port = 8080
  contextPath = '/'
  servletContainer = 'jetty9' //tomcat7 or tomcat8
}

eclipse {

  wtp {
    component {

      //define context path, default to project folder name
      contextPath = '/'

    }

  }
}

和我的jpa配置类，它从来不会给我的工件的旧版本带来问题

package com.ashken.config;

import java.util.Properties;

import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;

import org.apache.commons.dbcp2.BasicDataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.annotation.EnableTransactionManagement;



@Configuration
@EnableJpaRepositories(entityManagerFactoryRef="EntityManagerFactory",transactionManagerRef="TransactionManager", basePackages="com.ashken.repositories")
@EnableTransactionManagement
public class JPADataConfig {

    @Autowired 
    Environment environment;

    @Bean(name = "DataSource")
    public DataSource getAuthDataSource()
    {
        BasicDataSource ds = new BasicDataSource();
        ds.setDriverClassName("com.mysql.jdbc.Driver");
        ds.setUrl("jdbc:mysql://localhost:3306/ngo");
        ds.setUsername("root");
        ds.setPassword("");
        return ds;
    }

    @Autowired
    @Bean(name="EntityManagerFactory")
    EntityManagerFactory entityManagerFactory(@Qualifier("DataSource") DataSource dataSource) {

        LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactoryBean.setDataSource(dataSource);
        entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
        entityManagerFactoryBean.setPackagesToScan("com.ashken.entities");

        Properties jpaProperties = new Properties();
        jpaProperties.put("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect");
        jpaProperties.setProperty("hibernate.hbm2ddl.auto", "update");
        jpaProperties.setProperty("hibernate.connection.autocommit", "false");
        //jpaProperties.setProperty("hibernate.show_sql", "true");
        entityManagerFactoryBean.setJpaProperties(jpaProperties);
        entityManagerFactoryBean.afterPropertiesSet();

        return entityManagerFactoryBean.getObject();
    }


     @Autowired
     @Bean(name = "TransactionManager")
        JpaTransactionManager transactionManager(@Qualifier("EntityManagerFactory") EntityManagerFactory entityManagerFactory) {
            JpaTransactionManager transactionManager = new JpaTransactionManager();
            transactionManager.setEntityManagerFactory(entityManagerFactory);
            return transactionManager;
        }

}

Answer 1

您可能知道，AbstractMethodError有时是由JAR不可压缩性引起的。我尝试了自己的gradle构建，并通过查看WAR文件发现了可能导致此问题的原因：

>

您使用旧版本的hibernate-envers。您不是要求这样做，而是声明了对spring-data-envers的依赖关系（因此spring-data-envers需要hibernate-envers JAR)，这可能会导致问题。

我看到您有重复的bcmail-jdk14-138.jar、bcprov-jdk14-138.jar和stax-api-1.0.x.jar。移除其中一个可能解决您的问题。

编辑：这些jar中的一些来自名为传递依赖关系的东西，这在maven和Gradle中都是非常常见和自然的。当不同的库/框架对具有不同版本的另一个库具有相同的依赖关系时，就会出现冲突。

例如，hibernate和spring对cglib具有相同的依赖关系。但是hibernate声明它们依赖于cglib-1.2，而spring决定依赖于cglib-1.0。最后，当您构建WAR（或JAR及其依赖项）时，您的构建将同时带来cglib-1.0和cglib-1.2。

我怎么摆脱他们

您可以尝试执行：

gradle dependencies

或者使用任何提供的变体，然后排除重复的JAR，并在构建中声明依赖项。gradle如下所示：

compile ('com.lowagie:itext:2.1.7') {
  exclude group: 'org.bouncycastle', module: 'bcmail-jdk14'
}

如果您发现您不习惯使用命令行来区分重复的依赖项，您可以尝试：

>

将apply plugin：“maven”添加到build.gradle，然后执行gradle install命令。

在 /build 中，将pom-default.xml复制到 /pom.xml 。

<代码><排除>....

将已在pom.xml中声明的排除的libs/jar转换为build.gradle。

希望能有所帮助。