我使用 Spring 3.0.6、GlassFish 3.1、EJB 3、JPA 2,我的提供者是 EclipseLink (JPA 2.0)
我的 webApplication 有这些配置文件:
持久性.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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_2_0.xsd">
<persistence-unit name="ejbPU" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>tranEnterprise</jta-data-source>
<properties>
<property name="eclipselink.target-server" value="SunAS9"/>
<property name="eclipselink.logging.level" value="FINEST"/>
<property name="eclipselink.target-database" value="org.eclipse.persistence.platform.database.MySQLPlatform"/>
</properties>
</persistence-unit>
</persistence>
应用程序上下文.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
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/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
">
<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="tranEnterprise"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="persistenceUnitName" value="ejbPU"/>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.glassfish.GlassFishLoadTimeWeaver"/>
</property>
<property name="jpaVendorAdapter">
<bean
class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="showSql" value="true" />
</bean>
</property>
<property name="jpaDialect">
<bean
class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect" />
</property>
</bean>
<tx:jta-transaction-manager />
<bean id="persistenceAnnotation" class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
</beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>redirect.jsp</welcome-file>
</welcome-file-list>
</web-app>
该项目显示数据,但不将数据保存在数据库中。我搜索了一周,但找不到任何答案。
我的控制器:
@EJB
private ContractBeanLocal contractBean;
@Transactional
@RequestMapping(method = RequestMethod.POST)
public String onSubmit(@ModelAttribute("contract") Contract contract)
{
try
{
contractBean.createContract(contract);
} catch (Exception e)
{
e.printStackTrace();
}
return "someThing";
}
@Local
public interface ContractBeanLocal
{
public void createContract(Contract contract);
}
@Stateful
@Local(ContractBeanLocal.class)
public class ContractBean implements ContractBeanLocal {
@PersistenceContext(unitName = "ejbPU")
private EntityManager em;
@Override
public void createContract(Contract contract) {
try {
em.persist(contract);
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
我还尝试不使用 EJB 并使其由 Spring 管理
持久性.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" 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">
<persistence-unit name="JavaApplication2PU" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>entity.Contract</class>
</persistence-unit>
</persistence>
应用程序上下文.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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="JavaApplication2PU"/>
<property name="dataSource" ref="dataSource"/>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/>
</property>
<property name="jpaVendorAdapter">
<bean
class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="showSql" value="true" />
</bean>
</property>
<property name="jpaDialect">
<bean
class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect" />
</property>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/transport2"/>
<property name="username" value="root"/>
<property name="password" value="123456"/>
</bean>
<bean id="ContractDaoImpl" class="dao.ContractDaoImpl"/>
<tx:jta-transaction-manager />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="dataSource" ref="dataSource"/>
</bean>
<bean id="persistenceAnnotation" class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
</beans>
这是合同实体:
@Entity
@Table(name = "contract")
@XmlRootElement
public class Contract implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@Basic(optional = false)
@Column(name = "contractNumber")
private String contractNumber;
@Column(name = "companyName")
private String companyName;
public Contract() {
}
public Contract(String contractNumber) {
this.contractNumber = contractNumber;
}
public Contract(String contractNumber, String companyName) {
this.contractNumber = contractNumber;
this.companyName = companyName;
}
public String getContractNumber() {
return contractNumber;
}
public void setContractNumber(String contractNumber) {
this.contractNumber = contractNumber;
}
public String getCompanyName() {
return companyName;
}
public void setCompanyName(String companyName) {
this.companyName = companyName;
}
@Override
public int hashCode() {
int hash = 0;
hash += (contractNumber != null ? contractNumber.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof Contract)) {
return false;
}
Contract other = (Contract) object;
if ((this.contractNumber == null && other.contractNumber != null) || (this.contractNumber != null && !this.contractNumber.equals(other.contractNumber))) {
return false;
}
return true;
}
@Override
public String toString() {
return contractNumber;
}
}
package dao;
import java.util.List;
import entity.Contract;
public interface ContractDao
{
void createContract(Contract contract);
List<Contract> getAllContract();
void deleteContract(Contract contract);
}
package dao;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.springframework.transaction.annotation.Transactional;
import entity.Contract;
public class ContractDaoImpl implements ContractDao
{
@PersistenceContext
private EntityManager entityManager;
@Transactional
@Override
public void createContract(Contract contract)
{
try
{
entityManager.persist(contract);
} catch (Exception e)
{
e.printStackTrace();
}
}
@Override
public List<Contract> getAllContract()
{
return entityManager.createQuery("SELECT c FROM Contract c where c.removed <> 1").getResultList();
}
@Transactional
@Override
public void deleteContract(Contract contract)
{
entityManager.remove(contract);
}
}
package javaapplication2;
import dao.ContractDao;
import entity.Contract;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class JavaApplication2
{
public static void main(String[] args)
{
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("config/applicationContext.xml");
ContractDao contractDao = (ContractDao) applicationContext.getBean("ContractDaoImpl");
Contract contract = new Contract();
contract.setCompanyName("Freddy");
contract.setContractNumber("Freddy");
contractDao.createContract(contract);
System.out.println("Contract is successfully created");
System.out.println("Contract Number is: " + contractDao.getAllContract());
}
}
我可以获取数据,但是当我尝试持久化时,将引发以下异常:
java.lang.IllegalArgumentException: Object: contractNumber= Freddy is not a known entity type.
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4158)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:440)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(Exte ndedEntityManagerCreator.java:365)
at $Proxy8.persist(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
at $Proxy8.persist(Unknown Source)
at dao.ContractDaoImpl.createUser(ContractDaoImpl.java:36)
at javaapplication2.JavaApplication2.main(JavaApplication2.java:28)