JAVAlang.NoClassDefFoundError休眠

Question

我刚开始冬眠。我试图用hibernate制作我的第一个应用程序，但遇到了下一个例外：

Exception in thread "main" java.lang.

NoClassDefFoundError: javax/xml/bind/JAXBException at org.hibernate.boot.cfgxml.internal.ConfigLoader$1.initialize(ConfigLoader.java:41) at org.hibernate.boot.cfgxml.internal.ConfigLoader$1.initialize(ConfigLoader.java:38) at org.hibernate.internal.util.ValueHolder.getValue(ValueHolder.java:55) at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:57) at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:163) at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:152) at Main.main(Main.java:19) Caused by: java.lang.ClassNotFoundException: javax.xml.bind.JAXBException at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496) ... 7 more

我的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>app</groupId>
    <artifactId>qapp</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.2.2.Final</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.10</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.6.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

主要方法

public static void main(String[] args){
   SessionFactory sessionFactory;
   StandardServiceRegistry serviceRegistry =
            new StandardServiceRegistryBuilder().configure().build();
   Metadata metadata =
            new MetadataSources(serviceRegistry)
            .getMetadataBuilder().build();
        sessionFactory = metadata.getSessionFactoryBuilder().build();
}

Answer 1

您缺少依赖项。就您的具体情况而言，它是：

<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.0</version>
</dependency>

您可能会看到类似的其他问题（NoClassDefFoundError），请检查您的依赖项，如果缺少相关的依赖项，请添加相关的依赖项