我用 jpa 发送了一个客户端(检查了服务的值,然后调用 dao 将客户端保存在数据库中,该过程毫无异常(exception)地完成,但客户端没有使用实体管理器保存
Controller
@RequestMapping(value="/enregistrer")
public String enregistrerClient(Model model, Client client){
if(client == null){
System.out.println("client is null");
}else{
System.out.println("name : "+client.getNom()+" prenom "+client.getPrenom());
client = clientService.save(client);
}
return "redirect:/clients/";
}
服务(所有方法都是事务性的)
public Client save(Client entity) {
//entity.setIdClient(4);
Client c = dao.save(entity);
System.out.println("saved element "+c.getNom());
return c;
}
和道
@PersistenceContext
EntityManager em;
@Override
public E save(E entity) {
try{
em.persist(entity);
}catch(Exception e){
e.printStackTrace();
}
return entity;
}
它没有打印任何异常
这是我的应用程序上下文
<bean name="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/gestion_stock_mvc?createDatabaseIfNotExist=true"></property>
<property name="username" value="root"></property>
<property name="password" value=""></property>
</bean>
<bean name="persistenceUnitManager" class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
<property name="persistenceXmlLocations">
<list>
<value>classpath*:META-INF/persistence.xml</value>
</list>
</property>
<property name="defaultDataSource" ref="dataSource"></property>
</bean>
<bean name="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitManager" ref="persistenceUnitManager"></property>
<property name="persistenceUnitName" value="UP_GESTION_DE_STOCK_MVC"></property>
</bean>
<bean name="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"></property>
</bean>
<context:component-scan base-package="stock.mvc" />
<context:annotation-config/>
和我的持久单元
<?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" version="1.0"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="UP_GESTION_DE_STOCK_MVC"
transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
最佳答案
通过添加以下配置解决
<tx:annotation-driven transaction-manager="transactionManager" />
<context:annotation-config ></context:annotation-config>
关于java - 实体管理器未持久保存在数据库中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/60777618/