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我正在尝试使用 hibernate 将本地数据库连接到我的应用程序。我收到以下错误:
Jul 02, 2019 9:20:08 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {[WORKING]}
Exception in thread "main" java.lang.NoClassDefFoundError: net/bytebuddy/NamingStrategy$SuffixingRandom$BaseNameResolver
at org.hibernate.orm.core@5.4.3.Final/org.hibernate.cfg.Environment.buildBytecodeProvider(Environment.java:345)
at org.hibernate.orm.core@5.4.3.Final/org.hibernate.cfg.Environment.buildBytecodeProvider(Environment.java:337)
at org.hibernate.orm.core@5.4.3.Final/org.hibernate.cfg.Environment.<clinit>(Environment.java:230)
at org.hibernate.orm.core@5.4.3.Final/org.hibernate.boot.registry.StandardServiceRegistryBuilder.<init>(StandardServiceRegistryBuilder.java:78)
at org.hibernate.orm.core@5.4.3.Final/org.hibernate.boot.registry.StandardServiceRegistryBuilder.<init>(StandardServiceRegistryBuilder.java:67)
at org.hibernate.orm.core@5.4.3.Final/org.hibernate.boot.registry.StandardServiceRegistryBuilder.<init>(StandardServiceRegistryBuilder.java:58)
at ProjectDBTest/ProjectDBTest2.HibernateUtil.getSessionFactory(HibernateUtil.java:28)
at ProjectDBTest/ProjectDBTest2.App.main(App.java:28)
Caused by: java.lang.ClassNotFoundException: net.bytebuddy.NamingStrategy$SuffixingRandom$BaseNameResolver
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 8 more
任何有关如何解决此问题的帮助将不胜感激。
最初,我收到“java.lang.NoClassDefFoundError:java/sql/SQLException”异常,因此在 Stack Overflow 上其他地方看到这是建议的解决方案后,我添加了“需要 java.sql”,但现在描述了异常出现上述情况。我不确定我的代码哪里出了问题或者缺少什么。
这是我的 module-info.java 文件:
module ProjectDBTest {
requires java.persistence;
//requires lombok;
requires javafx.graphics;
requires org.hibernate.orm.core;
requires java.naming;
requires java.sql;
exports ProjectDBTest2.DB;
}
主类:
package ProjectDBTest2;
import ProjectDBTest2.DB.Vocabulary;
import org.hibernate.Session;
import org.hibernate.Transaction;
import java.util.List;
/**
* Hello world!
*
*/
public class App
{
public static void main( String[] args )
{
Vocabulary word1 = new Vocabulary();
word1.setUnitID(1);
word1.setWord("test");
word1.setVocabClass("noun");
word1.setVocabDefinition("this is a test");
word1.setVocabID(7);
System.out.println(word1.getUnitID());
Transaction transaction = null;
try (Session session = HibernateUtil.getSessionFactory().openSession()) {
transaction = session.beginTransaction();
session.save(word1);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
e.printStackTrace();
}
try (Session session = HibernateUtil.getSessionFactory().openSession()) {
List< Vocabulary > students = session.createQuery("from Vocabulary ", Vocabulary.class).list();
students.forEach(s -> System.out.println(s.getWord()));
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
e.printStackTrace();
}
}
}
Hibernate 实用程序文件:
package ProjectDBTest2;
import org.hibernate.SessionFactory;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
public class HibernateUtil {
private static StandardServiceRegistry registry;
private static SessionFactory sessionFactory;
public static SessionFactory getSessionFactory() {
if (sessionFactory == null) {
try {
// Create registry
registry = new StandardServiceRegistryBuilder().configure().build();
// Create MetadataSources
MetadataSources sources = new MetadataSources(registry);
// Create Metadata
Metadata metadata = sources.getMetadataBuilder().build();
// Create SessionFactory
sessionFactory = metadata.getSessionFactoryBuilder().build();
} catch (Exception e) {
e.printStackTrace();
if (registry != null) {
StandardServiceRegistryBuilder.destroy(registry);
}
}
}
return sessionFactory;
}
public static void shutdown() {
if (registry != null) {
StandardServiceRegistryBuilder.destroy(registry);
}
}
}
持久性数据类:
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
//@Data
@Entity
@Table(name = "vocabulary")
public class Vocabulary {
@Id
@Column(name = "V_ID")
private int vocabID;
@Column(name = "V_WORD")
private String word;
@Column(name = "V_CLASS")
private String vocabClass;
@Column(name = "V_DEFINITION")
private String vocabDefinition;
@Column(name = "U_ID")
private int unitID;
public int getVocabID() {
return vocabID;
}
public void setVocabID(int vocabID) {
this.vocabID = vocabID;
}
public String getWord() {
return word;
}
public void setWord(String word) {
this.word = word;
}
public String getVocabClass() {
return vocabClass;
}
public void setVocabClass(String vocabClass) {
this.vocabClass = vocabClass;
}
public String getVocabDefinition() {
return vocabDefinition;
}
public void setVocabDefinition(String vocabDefinition) {
this.vocabDefinition = vocabDefinition;
}
public int getUnitID() {
return unitID;
}
public void setUnitID(int unitID) {
this.unitID = unitID;
}
}
pom.xml:
<?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>ProjectDBTest2</groupId>
<artifactId>ProjectDBTest2.0</artifactId>
<version>1.0-SNAPSHOT</version>
<name>ProjectDBTest2.0</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/net.bytebuddy/byte-buddy -->
<dependency>
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy</artifactId>
<version>1.9.13</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.16</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.3.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok-->
<!--
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
<scope>provided</scope>
</dependency> -->
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>1.3.0.Final</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-graphics</artifactId>
<version>13-ea+9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.openjfx/javafx -->
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx</artifactId>
<version>13-ea+9</version>
<type>pom</type>
</dependency>
<!-- https://mvnrepository.com/artifact/org.openjfx/javafx-base -->
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-base</artifactId>
<version>13-ea+9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.openjfx/javafx-controls -->
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-controls</artifactId>
<version>13-ea+9</version>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>3.0.0</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
我使用的是 intelliJ Ultimate 2019.1,语言级别设置为 11。
最佳答案
我终于通过更新我的 module-info.java 文件来解决这个问题:
module AlienDB {
requires static lombok;
requires java.persistence;
requires org.hibernate.orm.core;
requires java.naming;
requires java.sql;
requires com.sun.xml.bind;
requires net.bytebuddy;
opens Aliens to org.hibernate.orm.core;
exports Aliens;
}
之前我添加了 java.xml.bind,这导致了进一步的问题。
关于java - "Exception in thread "主要如何解决这个异常 : "java.lang.NoClassDefFoundError: net/bytebuddy/NamingStrategy...",我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56859664/
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