Spring JPA没有正在进行的事务

zvms9eto  于 2022-11-21  发布在  Spring
关注(0)|答案(5)|浏览(198)

我是Spring和JPA的新手，浪费了5天时间搜索互联网，没有结果。我想将对象保存到SQL SERVER，连接正确，但当我编写.flush（）时，我得到异常
嵌套的异常是javax.persistence。没有正在进行的事务
这是我的jpaContext.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:context="http://www.springframework.org/schema/context"
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/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">

<context:annotation-config />
<context:component-scan base-package="com.misha.service"/>
<context:component-scan base-package="com.misha.repository"/>
<context:component-scan base-package="com.misha.model"/>

<bean
    class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

<bean id="myEntityManager"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="packagesToScan" value="com.misha.model"/>
    <property name="persistenceUnitName" value="test" /> 
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
    </property>
    <property name="jpaProperties">
        <props>
            <prop key="hibernate.format_sql">true</prop>
            <prop key="hibernate.hbm2ddl.auto">create</prop>
            <prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
        </props>
    </property>
</bean>
<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="net.sourceforge.jtds.jdbc.Driver" />
    <property name="url"
        value="jdbc:jtds:sqlserver://127.0.0.1;instance=SQLEXPRESS;DatabaseName=misha" />
    <property name="username" value="sa" />
    <property name="password" value="root" />
</bean>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="myEntityManager" />
</bean>

  <tx:annotation-driven transaction-manager="transactionManager"/>  

</beans>

这是我的persistence.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
    <persistence-unit name="test" >
        <class>com.misha.model.Table1</class>
    </persistence-unit> 
</persistence>

这是我的服务实现：

@Service("manService")
public class SaveManImpl implements SaveMan {
//  
    @Autowired
    private ManRepositoryImpl manRepo;

    @Transactional
    public Table1 save(Table1 table) {
        manRepo.save(table);
        return null;
    }

}

最后是我的Repository实现：

@Repository("manRepository")
public class ManRepositoryImpl implements ManRepository {

    @PersistenceContext
    private EntityManager em;   

    public Table1 save(Table1 table){
        em.persist(table);
        em.flush();
        return table;
    }
}

从异常中，Spring看不到@Transactional注解，我说的对吗？我试着把注解放在仓库保存方法上面，没有结果，在这个上面的Service保存方法之后，这里也一样。提前感谢

我在控制器中调用保存方法

package com.misha.controllers;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.RequestMapping;

import com.misha.model.Table1;
import com.misha.service.SaveMan;

@Controller
public class ManController {
    @Autowired 
    SaveMan saveMan; // this is service interface

    @RequestMapping(value="/test1")
    public String saveMan(){
        Table1 tab = new Table1();
        tab.setName("name");
        saveMan.save(tab);          
        return "saveMan";
    }   
}

错误堆栈：

SEVERE: Servlet.service() for servlet [fitTrackerServlet] in context with path [/test] threw exception [Request processing failed; nested exception is javax.persistence.TransactionRequiredException: no transaction is in progress] with root cause
javax.persistence.TransactionRequiredException: no transaction is in progress
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.checkTransactionNeeded(AbstractEntityManagerImpl.java:1171)
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:1332)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:365)
    at com.sun.proxy.$Proxy20.flush(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
    at com.sun.proxy.$Proxy20.flush(Unknown Source)
    at com.misha.repository.ManRepositoryImpl.save(ManRepositoryImpl.java:21)
    at com.misha.service.SaveManImpl.save(SaveManImpl.java:19)
    at com.misha.controllers.ManController.saveMan(ManController.java:21)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:421)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:409)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:774)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
    at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)

Spring配置文件

<?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"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.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-3.1.xsd">

    <mvc:annotation-driven />
    <!--<mvc:resources location="pdfs" mapping="/pdfs/**" />
    <mvc:resources location="/resources" mapping="/resources/**"/> -->
    <context:component-scan base-package="com.misha.controllers"></context:component-scan>
    <context:component-scan base-package="com.misha.repository" />
    <context:component-scan base-package="com.misha.service" />

    <context:annotation-config/>

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
        <property name="order" value="0"></property>
    </bean>

<bean id="contentNegotiatingViewResolver"
class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
  <property name="order" value="1" />
  <property name="mediaTypes">
    <map>
      <entry key="json" value="application/json" />
      <entry key="xml" value="application/xml" />
      <entry key="request" value="text/html" />
    </map>
  </property>
  <property name="favorPathExtension" value="false" />
  <property name="favorParameter" value="true" />
  <property name="defaultViews">
    <list>

    </list>
  </property>
</bean>

<bean class="org.springframework.context.support.ResourceBundleMessageSource"  >
    <property name="basename" value="WEB-INF/messages"></property>

</bean>

</beans>
spring

5条答案

按热度按时间
c86crjj0

c86crjj01#

您有两个Spring上下文：
1.其中来自服务和存储库包的bean被扫描，并由事务拦截器代理。

  1. mvc上下文，由另一个xml文件（您没有为其命名）配置，该文件的作用是描述应用程序的MVC部分，即定义和配置控制器bean、视图解析器等。此上下文是主上下文的子上下文。
    问题是您还要扫描此子上下文中的服务和系统信息库包。因此，您最终得到每个服务和系统信息库的两个示例：
  • 一个在主上下文中，它是事务性的
  • 一个在子上下文中，而后者不是（因为子上下文不关心事务管理）

因此，控制器被注入来自与控制器相同的上下文的服务：非事务性的。
要确认这一点，可以在bean的构造函数中添加跟踪，并查看它们被示例化的次数。
而要避免这个问题，有两种解决方案：

  • 避免扫描MVC上下文中的储存库和服务包：这个上下文应该只关心与mvc相关的bean。当Spring在控制器中注入一个服务时，它不会在mvc上下文中找到该服务，因此它会查找它，并在主上下文中找到它。因此事务服务将被注入。
  • 使用单个上下文：其中定义了应用程序中的所有bean。
赞(0）分享  回复(0）举报  2022-11-21
lnvxswe2

lnvxswe22#

您应该将实体管理器引入到事务管理器中，以便在使用@Transactional注解函数时，它会从池中加载示例

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="myEmf" />
</bean>
<tx:annotation-driven />

嘘！

赞(0）分享  回复(0）举报  2022-11-21
neekobn8

neekobn83#

简单地说，尝试在方法的开头添加@Transactional，这在我的例子中是一个问题。

赞(0）分享  回复(0）举报  2022-11-21
7gcisfzg

7gcisfzg4#

我遇到了同样的问题，在我的例子中，我使用了一个带有用@Transactional标注的DAO的库，但它不是Spring中的org.springframework.transaction.annotation.Transactional，而是javax.transaction.Transactional，它不能被命名，所以你不能指定TransactionManager：

@Transactional("transactionManagerName")
public class DaoImpl implements Dao {...}

获取它的事务管理器，如下所示，在我的例子中是从配置文件中获取的：

@Bean("transactionManagerName")
    public PlatformTransactionManager transactionManager() 
    throws SQLException, NamingException {
        final HibernateTransactionManager transactionManager = new HibernateTransactionManager();
        transactionManager.setSessionFactory(this.sessionFactory().getObject());
        return transactionManager;
    }
赞(0）分享  回复(0）举报  2022-11-21
elcex8rz

elcex8rz5#

用于Hibernate属性

properties.put（“允许更新外部事务”，“true”）;

赞(0）分享  回复(0）举报  2022-11-21
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