早上好,我仍然是hibernate jpa和spring的新手,这是我制作的第一个项目,每当我尝试执行它时,我都会得到它。这是我的代码
的applicationContext.xml
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<bean id="dao" class="com.talan.springmvc.dao.AdminDaoImpl">
</bean>
<bean id="metier" class="com.talan.springmvc.metier.AdminMetier">
<property name="dao" ref="dao" />
</bean>
<bean id="datasource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"></property>
<property name="url" value="jdbc:oracle:thin:@localhost:1521/XE"></property>
<property name="username" value="system"></property>
<property name="password" value="Islem1992"></property>
</bean>
<bean id="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 id="entityManagerFactory
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitManager" ref="persistenceUnitManager"></property>
<property name="dataSource" ref="datasource" />
<property name="persistenceUnitName" value="myapp"></property>
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">none</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
</props>
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
</bean>
</property>
</bean>
<!-- <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
<property name="persistenceUnitName" value="myapp"></property> </bean> -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"></property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
的persistence.xml
<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="myapp"
transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
</persistence-unit>
</persistence>
Test.java
包裹测试;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.talan.springmvc.entities.Agence;
import com.talan.springmvc.entities.User;
import com.talan.springmvc.metier.IAdminMetier;
public class Test {
public static void main(String[] args){
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml"});
IAdminMetier admin = (IAdminMetier) context.getBean("metier");
User u = new User(1,"islem", "yeddes", "salesAgent");
admin.addUser(u);
}
}
答案 0 :(得分:0)
我忘记发布我的DAO
package com.talan.springmvc.dao;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import com.talan.springmvc.entities.User;
public class AdminDaoImpl implements IAdminDao {
@PersistenceContext
private EntityManager em;
@Override
public User addUser(User u) {
em.persist(u);
return u;
}
}
答案 1 :(得分:0)
首先,您的DataSource存在问题,无法为数据库连接处理数据库池。
org.springframework.jdbc.datasource.DriverManagerDataSource
正在为每个HttpRequest创建一个新的Connection,它仅适用于测试目的......
使用Tomcat中的dbcp:
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-dbcp</artifactId>
<version>8.0.32</version>
</dependency>
或来自c3p0或vibur的其他提供商,可以大大处理这项工作。
其次,您需要添加@Service(&#34; serviceName&#34;)和一些@Autowired注释,以便为Spring IoC机制提供代码依赖性。也许在你的服务中添加一些@ComponentScan(&#34; com.talan.springmvc.dao&#34;)。
在我的一个项目中,我有一个服务,其定义为:
@Service("utilisateurService")
public class UtilisateurService implements UserDetailsService {
public static final Logger logger = LoggerFactory.getLogger(UtilisateurService.class);
private EntityManager entityManager;
@PersistenceContext
public void setEntityManager(EntityManager newEm){
this.entityManager = newEm;
}
@Override
@Transactional
public UserSpringSecurity loadUserByUsername(final String username) throws UsernameNotFoundException {
}
// etc.
}
当然,有一些bean可以定义我的&#34; utitisateurService&#34;。在XML中:
<context:annotation-config />
<context:property-placeholder location="classpath:jdbc.properties" />
<bean id="dsn1" class="org.vibur.dbcp.ViburDBCPDataSource"
init-method="start" destroy-method="terminate">
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="poolInitialSize" value="10" />
<property name="poolMaxSize" value="50" />
<property name="connectionIdleLimitInSeconds" value="30" />
<property name="testConnectionQuery" value="SELECT 1" />
<property name="logQueryExecutionLongerThanMs" value="500" />
<property name="logStackTraceForLongQueryExecution" value="true" />
<property name="statementCacheMaxSize" value="200" />
</bean>
<bean id="crmEmf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" autowire="byName">
<property name="persistenceUnitName" value="crmPersistenceUnit" />
<property name="dataSource" ref="dsn1" />
<property name="packagesToScan" value="crm.db.model" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="crmEmf"></property>
</bean>
<tx:annotation-driven proxy-target-class="true" mode="proxy" />
<bean id="persistenceExceptionTranslationPostProcessor"
class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
<!-- Logging -->
<bean id="loggerListener"
class="org.springframework.security.authentication.event.LoggerListener" />
<bean id="customAuthenticationProvider" class="crm.security.CustomAuthenticationProvider" />
<bean id="utilisateurService" class="crm.service.UtilisateurService"/>
尝试这种方式并告诉我们它是否有效!