java - 无法实例化 [org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter]：构造函数抛出异常；
问题描述
使用 JPA 示例的 Spring
我试图配置一个 Spring Data JPA 项目。但我得到错误请提供解决方案。错误是无法实例化 [org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter]：构造函数抛出异常。
谢谢你。
1.账户.java
package com.rks.beans;
public class Account
{
private int accountNumber;
private String owner;
private double balance;
public Account()
{
}
public Account(int accountNumber,String owner,double balance)
{
this.accountNumber=accountNumber;
this.owner=owner;
this.balance=balance;
}
public int getAccountNumber() {
return accountNumber;
}
public void setAccountNumber(int accountNumber) {
this.accountNumber = accountNumber;
}
public String getOwner() {
return owner;
}
public void setOwner(String owner) {
this.owner = owner;
}
public double getBalance() {
return balance;
}
public void setBalance(double balance) {
this.balance = balance;
}
}
2.账户.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">
<persistence-unit name="ForAccountsDB">
<mapping-file>com/rks/beans/Account.xml</mapping-file>
<class>com.rks.beans.Account</class>
</persistence-unit>
</persistence>
3.AccountsDao.java
package com.rks.beans;
import java.util.List;
import org.springframework.orm.jpa.JpaTemplate;
import org.springframework.transaction.annotation.Transactional;
@Transactional
public class AccountsDao
{
JpaTemplate template;
public void setTemplate(JpaTemplate template) {
this.template = template;
}
public void createAccount(int accountNumber,String owner,double balance){
Account account = new Account(accountNumber,owner,balance);
template.persist(account);
}
public void updateBalance(int accountNumber,double newBalance){
Account account = template.find(Account.class, accountNumber);
if(account != null){
account.setBalance(newBalance);
}
template.merge(account);
}
public void deleteAccount(int accountNumber){
Account account = template.find(Account.class, accountNumber);
if(account != null)
template.remove(account);
}
public List<Account> getAllAccounts(){
List<Account> accounts =template.find("select acc from Account acc");
return accounts;
}
}
4.persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">
<persistence-unit name="ForAccountsDB">
<mapping-file>com/rks/beans/Account.xml</mapping-file>
<class>com.rks.beans.Account</class>
</persistence-unit>
</persistence>
5.spring.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<tx:annotation-driven transaction-manager="jpaTxnManagerBean" proxy-target-class="true"/>
<bean id="dataSourceBean" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"></property>
<property name="url" value="jdbc:oracle:thin:@localhost:1521:system"></property>
<property name="username" value="hr"></property>
<property name="password" value="hr"></property>
</bean>
<bean id="hbAdapterBean" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true"></property>
<property name="generateDdl" value="true"></property>
<property name="databasePlatform" value="org.hibernate.dialect.OracleDialect"></property>
</bean>
<bean id="emfBean" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSourceBean"></property>
<property name="jpaVendorAdapter" ref="hbAdapterBean"></property>
</bean>
<bean id="jpaTemplateBean" class="org.springframework.orm.jpa.JpaTemplate">
<property name="entityManagerFactory" ref="emfBean"></property>
</bean>
<bean id="accountsDaoBean" class="com.rks.beans.AccountsDao">
<property name="template" ref="jpaTemplateBean"></property>
</bean>
<bean id="jpaTxnManagerBean" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="emfBean"></property>
</bean>
</beans>
6.账户客户端.java
package com.rks.beans;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Accountsclient {
public static void main(String[] args)
{
ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
AccountsDao accountsDao = context.getBean("accountsDaoBean",AccountsDao.class);
accountsDao.createAccount(15, "Jai Kumar", 41000);
accountsDao.createAccount(20, "Rishi ", 35000);
System.out.println("Accounts created");
}
}
错误：
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.
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hbAdapterBean' defined in class path resource [spring.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/hibernate/ejb/HibernatePersistence
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1320)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:144)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:85)
at com.rks.beans.Accountsclient.main(Accountsclient.java:10)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/hibernate/ejb/HibernatePersistence
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:213)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1312)
... 13 more
Caused by: java.lang.NoClassDefFoundError: org/hibernate/ejb/HibernatePersistence
at org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter.<init>(HibernateJpaVendorAdapter.java:54)
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:200)
... 15 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.ejb.HibernatePersistence
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 21 more
层次结构的图像
