Tôi gặp lỗi này khi cố gắng gọi phương thức "kiên trì" để lưu mô hình thực thể vào cơ sở dữ liệu trong ứng dụng web Spring MVC của tôi. Thực sự không thể tìm thấy bất kỳ bài đăng hoặc trang nào trên internet có thể liên quan đến lỗi cụ thể này. Có vẻ như có gì đó không ổn với EntityManagerFactory bean nhưng tôi khá mới đối với lập trình Spring nên đối với tôi có vẻ như mọi thứ đều được khởi tạo tốt và theo các bài viết hướng dẫn khác nhau trên web.
bộ điều phối-servlet.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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/data/repository
http://www.springframework.org/schema/data/repository/spring-repository-1.5.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-3.2.xsd">
<context:component-scan base-package="wymysl.Controllers" />
<jpa:repositories base-package="wymysl.repositories"/>
<context:component-scan base-package="wymysl.beans" />
<context:component-scan base-package="wymysl.Validators" />
<bean
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean class="org.springframework.orm.hibernate4.HibernateExceptionTranslator"/>
<bean id="passwordValidator" class="wymysl.Validators.PasswordValidator"></bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:xe" />
<property name="username" value="system" />
<property name="password" value="polskabieda1" />
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceXmlLocation" value="classpath:./META-INF/persistence.xml" />
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.H2Dialect" />
<property name="showSql" value="true" />
<property name="generateDdl" value="false" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.jdbc.fetch_size">50</prop>
<prop key="hibernate.jdbc.batch_size">10</prop>
</props>
</property>
</bean>
<mvc:annotation-driven />
<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basename" value="classpath:messages" />
</bean>
<bean name="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<mvc:resources mapping="/resources/**" location="/resources/" />
<mvc:resources mapping="/resources/*" location="/resources/css/"
cache-period="31556926"/>
</beans>Đăng kýControll.java
@Controller
public class RegisterController {
@PersistenceContext
EntityManager entityManager;
@Autowired
PasswordValidator passwordValidator;
@InitBinder
private void initBinder(WebDataBinder binder) {
binder.setValidator(passwordValidator);
}
@RequestMapping(value = "/addUser", method = RequestMethod.GET)
public String register(Person person) {
return "register";
}
@RequestMapping(value = "/addUser", method = RequestMethod.POST)
public String register(@ModelAttribute("person") @Valid @Validated Person person, BindingResult result) {
if(result.hasErrors()) {
return "register";
} else {
entityManager.persist(person);
return "index";
}
}
@Transaction.