【发布时间】：2016-08-31 11:51:15
【问题描述】：
我是春天的新手。我正在从javapoint 学习spring。在从javapoint 和spring docs 学习了一些spring 的基础知识后，我转向使用spring 学习hibernate，但在第一次尝试（示例）时，我坚持使用例外：NoClassDefFoundExpetion: javax/persistence/PersistenceContext。为了解决这个异常，我在 this 和 this 上搜索并寻找类似的情况（及其解决方案），但没有任何帮助。Here 是我的异常的完整 stacktrace:
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.context.annotation.internalPersistenceAnnotationProcessor': Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: javax/persistence/PersistenceContext
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:207)
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:697)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:526)
at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84)
at test.Test.main(Test.java:15)
Caused by: java.lang.NoClassDefFoundError: javax/persistence/PersistenceContext
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.<clinit>(PersistenceAnnotationBeanPostProcessor.java:172)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:142)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1098)
... 12 more
我正在使用eclipse-neon IDE、spring-framework 4.3.2 RELEASE、Hibernate-5.2.2 Final 和Oracle 10G（数据库）。我的数据库中有一个 STUDENT 表，其中包含 4-5 个条目。我还使用简单（控制台基础）java project 和 NOT 使用任何构建工具编写了spring 代码。 Here 是我目前正在使用的完整代码和库列表：
Student.java
public class Student {
private Integer rollNo;
private String name;
/**
* @param rollNo
* @param name
*/
public Student(Integer rollNo, String name) {
super();
this.rollNo = rollNo;
this.name = name;
}
//Getter and setter ....
StudentDAO.java
public class StudentDAO {
private HibernateTemplate hibernateTemplate;
public StudentDAO(HibernateTemplate hibernateTemplate) {
this.hibernateTemplate = hibernateTemplate;
}
public void setHibernateTemplate(HibernateTemplate template) {
this.hibernateTemplate = template;
}
public void saveStudent(Student student) {
hibernateTemplate.save(student);
}
public List<Student> readAll() {
return hibernateTemplate.loadAll(Student.class);
}
}
我正在使用基于 java 注释的配置，所以我的 AppConfig.java 是：
@Configuration
public class AppConfig {
@Bean
public DriverManagerDataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource("jdbc:oracle:thin:@localhost:1521/xe", "user", "password");
dataSource.setDriverClassName("oracle.jdbc.driver.OracleDriver");
return dataSource;
}
@Bean
public LocalSessionFactoryBean sessionFactoryBean() {
LocalSessionFactoryBean bean = new LocalSessionFactoryBean();
bean.setDataSource(dataSource());
bean.setMappingResources("xml/student.hbm.xml");
Properties prop = new Properties();
prop.setProperty("hibernate.dialect", "org.hibernate.dialect.Oracle9Dialect");
prop.setProperty("hibernate.hbm2ddl.auto", "update");
prop.setProperty("hibernate.show_sql", "true");
bean.setHibernateProperties(prop);
return bean;
}
@Bean
public HibernateTemplate hibernateTemplate() {
HibernateTemplate template = new HibernateTemplate((SessionFactory) sessionFactoryBean());
return template;
}
@Bean
public StudentDAO DAO() {
return new StudentDAO(hibernateTemplate());
}
}
Student.hbm.xml XML 文件：
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="bean.Student" table="student">
<rollNo name="rollNo">
<generator class="assigned"></generator>
</rollNo>
<property name="name"></property>
</class>
</hibernate-mapping>
这是我的 Main-Method 类
public class Test {
public static void main(String[] args) {
ApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);
StudentDAO dao = context.getBean(StudentDAO.class);
List<Student> list = dao.readAll();
for(Student s: list)
System.out.println(s);
}
}
这是我在项目中包含的库（带有 jar 文件）的列表：
春天
休眠
Commons logging 和 ORALCE 10G 驱动程序
如何解决上述异常，library 我必须添加/删除或者我可以尝试解决问题的其他方法。
后悔问了这么长的问题
示例参考
本示例基于源代码，可在javapoint获取
【问题讨论】：
-
你需要为 Student.java 添加注解..... 例如：@Entity..
-
我还需要添加什么实体。
-
导入名为 javax.persistence 包的包，您需要从该包中声明上述类名..@Entity...
-
我已经导入了 javax.persistence 包，并且还使用 @Entity 注解将 Student.java 声明为实体类，但问题仍然存在
-
我已经在使用 hibernate-jpa-2.1-api-1.0.0.Final.jar 它有更高版本然后提到..
标签： java spring hibernate spring-mvc