Java org.hibernate.HibernateException：无法实例化默认 tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
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org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
提问by Sandeep Chatterjee
I am trying to learn to insert a simple record to a MySQL database using hibernate and I was following this articlefrom Mkyong and I am stuck at the last step,i.e,when running App.Java.
我正在尝试学习使用 hibernate 将一个简单的记录插入到 MySQL 数据库中，我正在关注Mkyong 的这篇文章，但我被困在最后一步，即运行 App.Java 时。
Please help.Thanks in advance.
请帮忙。提前致谢。
pom.xml:
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>com.mkyong.common</groupId>
<artifactId>HibernateExample</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>HibernateExample</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- MySQL database driver -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.9</version>
</dependency>
<!-- Hibernate framework -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.6.3.Final</version>
</dependency>
<!-- Hibernate library dependency start -->
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2</version>
</dependency>
<!-- Hibernate library dependency end -->
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>1.1</version>
</dependency>
</dependencies>
</project>
Exception Stacktrace:
异常堆栈跟踪：
Maven + Hibernate + MySQL
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Initial SessionFactory creation failed.org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.mkyong.persistence.HibernateUtil.buildSessionFactory(HibernateUtil.java:18)
at com.mkyong.persistence.HibernateUtil.<clinit>(HibernateUtil.java:8)
at com.mkyong.common.App.main(App.java:11)
Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:108)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:133)
at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:80)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:322)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:485)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:133)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:84)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:286)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1845)
at com.mkyong.persistence.HibernateUtil.buildSessionFactory(HibernateUtil.java:13)
... 2 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:105)
... 11 more
Caused by: java.lang.NoClassDefFoundError: javassist/util/proxy/MethodFilter
at org.hibernate.bytecode.javassist.BytecodeProviderImpl.getProxyFactoryFactory(BytecodeProviderImpl.java:49)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactoryInternal(PojoEntityTuplizer.java:205)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:183)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:167)
at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:77)
... 16 more
Caused by: java.lang.ClassNotFoundException: javassist.util.proxy.MethodFilter
at java.net.URLClassLoader.run(Unknown Source)
at java.net.URLClassLoader.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
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)
... 21 more
采纳答案by Peter Keller
In Hibernate 3.6.3.final the javassist runtime dependency is missing and must be added in your pom.xmlas stated here:
在 Hibernate 3.6.3.final 中，缺少 javassist 运行时依赖项，必须按照此处的pom.xml说明添加：
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.12.1.GA</version>
</dependency>
回答by Florescent Ticker
The hibernate dependency even requires slf4j dependency. Try adding slf4j dependencyin pom.xml
休眠依赖甚至需要 slf4j 依赖。尝试在pom.xml 中添加slf4j 依赖项
回答by ravi ranjan
javassist jar is missing in your project.
您的项目中缺少 javassist jar。
For ant based project just download it and put it in your libs
对于基于 ant 的项目，只需下载它并将其放入您的库中
http://www.java2s.com/Code/Jar/j/Downloadjavassistjar.htm
http://www.java2s.com/Code/Jar/j/Downloadjavassistjar.htm
for maven projects use its repository, add its dependency
对于 maven 项目，使用其存储库，添加其依赖项
http://mvnrepository.com/artifact/javassist/javassist/3.12.1.GA
http://mvnrepository.com/artifact/javassist/javassist/3.12.1.GA
回答by cstroe
I got this error when using Spring Boot 2.0.5 with Hibernate on Java 11 (JDK11). To fix it, I had to force an upgrade of the javassist library (this is for Gradle):
在 Java 11 (JDK11) 上使用 Spring Boot 2.0.5 和 Hibernate 时出现此错误。为了修复它，我不得不强制升级 javassist 库（这是针对 Gradle 的）：
compile('org.javassist:javassist:3.23.1-GA') {force = true}
For more info on migrating to JDK11, I found thisblog post useful. Alternatively, upgrading to Spring Boot to 2.1 will fix this issue.
有关迁移到 JDK11 的更多信息，我发现这篇博文很有用。或者，升级到 Spring Boot 到 2.1 将解决此问题。
