我似乎无法在spring mvc中使用注入的entitymgr在数据库中持久化数据。 我看到了多个类似的问题(如EntityManager cannot use persist to save element to database),但没有一个答案似乎解决了我的问题。 这里是我的配置:spring mvc + jpa + hibernate +事务问题
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<!-- datasource -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close"
p:driverClassName="${driver}"
p:url="${url}"
p:username="contact" p:password="contact" />
<context:property-placeholder location="classpath:jdbc.properties" />
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
p:dataSource-ref="dataSource"
p:packagesToScan="com.rd.web"> <!-- scans for entities (model) -->
<property name="persistenceProvider">
<bean class="org.hibernate.ejb.HibernatePersistence" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQL5Dialect
</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
p:entityManagerFactory-ref="entityManagerFactory" />
<tx:annotation-driven transaction-manager="transactionManager"/>
<context:component-scan base-package="com.rd.web" />
<bean id="contactService" class="com.rd.web.service.ContactServiceImpl"/>
</beans>
我有以下代码(在网络控制器,但目前转移到测试服务):
TEST_CASE1(使用Spring的事务):
@Transactional
public Contact setContact(Contact c){
if(c.getId() == null){
getEMgr().persist(c);
}else{
getEMgr().merge(c);
}
return c;
}
==>没有错误,实体只是没有插入,在日志中也没有插入语句。
TEST_CASE2(使用弹簧交易):
@Transactional
public Contact setContact(Contact c){
if(c.getId() == null){
getEMgr().persist(c);
}else{
getEMgr().merge(c);
}
getEMgr().flush();
return c;
}
==>异常我:没有事务正在进行
TEST_CASE3:
public Contact setContact(Contact c){
getEMgr().getTransaction().begin();
try{
if(c.getId() == null){
getEMgr().persist(c);
}else{
getEMgr().merge(c);
}
getEMgr().flush();
getEMgr().getTransaction().commit();
return c;
}catch(Throwable t){
getEMgr().getTransaction().setRollbackOnly();
}
return null;
}
==>抛出错误: java.lang.IllegalStateException:不允许在共享EntityManager上创建事务 - 使用Spring事务或EJB CMT代替
它不应该是春天的AOP问题,因为操作是公开的,并从另一个组件(注入服务)中调用。 此外,appcontext将事务定义为annotion驱动程序。 我真的不明白为什么我的交易没有开始。
当我使用相同的applicationcontext.xml,只是触发加载contactservice并创建联系人的测试类时,联系人被正确保存。
而且我在web.xml中添加以下过滤器,但无济于事:
<filter>
<filter-name>SpringOpenEntityManagerInViewFilter</filter-name>
<filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>SpringOpenEntityManagerInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
任何提示,将不胜感激。干杯。
增加了一些额外的信息:
@Muel,该entitymgr被注射使用persistencecontext:
@Transactional
@Service( “的ContactService”) 公共类ContactServiceImpl实现IContactService {
// @Autowired // private IEntityMgrProvider eMgrPovider;
@PersistenceContext EntityManager eMgr;
@Transactional
public Contact getContactByID(long id) {
return getEMgr().find(Contact.class, id);
}
@Transactional
public List<Contact> getAllContacts() {
TypedQuery<Contact> qry = getEMgr().createNamedQuery("findAll", Contact.class);
return qry.getResultList();
}
@Transactional
public Contact setContact(Contact c){
if(c.getId() == null){
getEMgr().persist(c);
// getEMgr().flush();
}else{
getEMgr().merge(c);
}
return c;
}
@Transactional(readOnly=true)
public void deleteContact(long id){
getEMgr().remove(getEMgr().find(Contact.class, id));
}
private EntityManager getEMgr(){
// return eMgrPovider.getEMgr();
return eMgr;
}
public static void main(String[] args) {
ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("appctx.xml");
IContactService contactService = ctx.getBean("contactService", IContactService.class);
Contact c= new Contact();
c.setBirthDate(new Date());
c.setFirstName("P1");
c.setLastName("P2");
ContactTelDetail tel = new ContactTelDetail();
tel.setContact(c);
tel.setTelNumber("056776650");
tel.setTelType("landline");
c = contactService.setContact(c);
System.out.println(c.getId());
}
}
我意识到这getEmgr()方法是没有必要的,但最初的eMgr来自其他地方(其中也有人注射,但没关系,就目前而言) BTW,当我运行的主要方法,我可以实际上插入联系人...
@ user2264997 这是我的servlet上下文:
<?xml version="1.0" encoding="UTF-8"?>
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd“>
<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>
<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Processes application requests -->
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>SpringOpenEntityManagerInViewFilter</filter-name>
<filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>SpringOpenEntityManagerInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
我只是添加了最后两个过滤器进行测试,我不认为它是必需的(似乎最后一个过滤器只是用于支持延迟加载或某种东西,但是试过它......)
@Martin Frey
我会看看你可以做些什么。
@ mdeinum.wordpress.com
服务在webcontroller注射用@Autowired。 服务实现和web.xml见上面。对于调度的servlet(allthough似乎有相关信息,不,也许这可能是问题但是;) 配置文件):
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<!-- use this dispatcher servlet for root -->
<!-- <default-servlet-handler/> -->
<resources location="/, classpath:/META-INF/web-resources/" mapping="/resources/**"/>
<interceptors>
<beans:bean class="org.springframework.web.servlet.theme.ThemeChangeInterceptor"/>
<beans:bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor"
p:paramName="lang"/>
</interceptors>
<beans:bean
class="org.springframework.ui.context.support.ResourceBundleThemeSource"
id="themeSource" />
<beans:bean class="org.springframework.web.servlet.theme.CookieThemeResolver"
id="themeResolver" p:cookieName="theme" p:defaultThemeName="standard" />
<beans:bean
class="org.springframework.context.support.ReloadableResourceBundleMessageSource"
id="messageSource" p:basenames="WEB-INF/i18n/messages,WEB-INF/i18n/application"
p:fallbackToSystemLocale="false" />
<beans:bean class="org.springframework.web.servlet.i18n.CookieLocaleResolver"
id="localeResolver" p:cookieName="locale"/>
<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<!-- <resources location="/resources/" mapping="/resources/**" /> -->
<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<!-- now using tiles in stead ==> different view resolver -->
<!-- <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> -->
<!-- <beans:property name="prefix" value="/WEB-INF/views/" /> -->
<!-- <beans:property name="suffix" value=".jsp" /> -->
<!-- </beans:bean> -->
<context:component-scan base-package="com.rd.web" />
<!-- Add the following beans -->
<!-- Tiles Configuration -->
<beans:bean class="org.springframework.web.servlet.view.UrlBasedViewResolver"
id="tilesViewResolver">
<beans:property name="viewClass"
value="org.springframework.web.servlet.view.tiles2.TilesView" />
</beans:bean>
<beans:bean
class="org.springframework.web.servlet.view.tiles2.TilesConfigurer"
id="tilesConfigurer">
<beans:property name="definitions">
<beans:list>
<beans:value>/WEB-INF/layouts/layouts.xml</beans:value>
<!-- Scan views directory for Tiles configurations -->
<beans:value>/WEB-INF/views/**/views.xml</beans:value>
</beans:list>
</beans:property>
</beans:bean>
</beans:beans>
我会尝试配置休眠适配器,让你知道如何它会...
干杯
您可以粘贴“ContactServiceImpl”的完整代码吗?具体来说,我对'getEMgr()'实现感兴趣。 – Muel
你能告诉我们你的servlet上下文xml吗? – ikumen
我建议你通过设置以下记录器来调试hibernate事务和SQL:org.hibernate.transaction,org.hibernate.SQL。 (在hibernate 4.2上面使用org.hibernate.engine.transaction)。 – gerrytan