Spring與休眠JPA - 運行時錯誤

-1

我想在Glassfish 4.1.1服務器上使用Spring和Hibernate JPA開發一個簡單的Web應用程序。Spring與休眠JPA - 運行時錯誤

我有一個實體類：

package entity; 

import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.GeneratedValue; 
import javax.persistence.Id; 
import javax.persistence.Table; 

@Entity 
@Table(name = "USERS") 
public class User { 
    @Id 
    @GeneratedValue 
    @Column(name = "ID") 
    private long id; 
    private String firstName; 
    private String lastName; 
    private String email; 
    private String login; 
    private String password; 

    public User() { 
    } 

    public User(long id, String firstName, String lastName, String email, String login, String password) { 
     this.id = id; 
     this.firstName = firstName; 
     this.lastName = lastName; 
     this.email = email; 
     this.login = login; 
     this.password = password; 
    } 

    getters and setters... 
}

然後控制器類：

package controller; 

import ... 

@Controller 
public class LoginController { 
    @Autowired 
    private UserService userService; 

    @RequestMapping(value = "/login", method = RequestMethod.POST) 
    public ModelAndView executeLogin(HttpServletRequest request, HttpServletResponse response, @ModelAttribute("user") User user) { 
      userService.addUser(new User(20, "a", "b", "dgsd", "sfadf", "sdfsdf")); 
    } 
}

UserService：

package service; 

import dao.UserDao; 
import entity.User; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.stereotype.Service; 

@Service 
public class UserService { 
    @Autowired 
    UserDao userDao; 

    public void addUser(User user) { 
     userDao.insert(user); 
    } 
}

userDAO的：

package dao; 

import entity.User; 
import javax.persistence.EntityManager; 
import javax.persistence.PersistenceContext; 
import org.springframework.stereotype.Repository; 

@Repository("userDao") 
public class UserDao { 
    @PersistenceContext 
    private EntityManager entityManager; 


    public void insert(User user) { 
     entityManager.persist(user); 
    } 
}

這是我persistance.xml

<?xml version="1.0" encoding="UTF-8"?> 
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence"> 
    <persistence-unit name="LibraryPU" transaction-type="JTA"> 
    <provider>org.hibernate.ejb.HibernatePersistence</provider> 
    <jta-data-source>java:app/library</jta-data-source> 
    </persistence-unit> 
</persistence>

的web.xml

<?xml version="1.0" encoding="UTF-8"?> 
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"> 
    <context-param> 
     <param-name>contextConfigLocation</param-name> 
     <param-value>/WEB-INF/applicationContext.xml</param-value> 
    </context-param> 

    <listener> 
     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
    </listener> 

    <servlet> 
     <servlet-name>dispatcher</servlet-name> 
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
     <load-on-startup>2</load-on-startup> 
    </servlet> 

    <servlet-mapping> 
     <servlet-name>dispatcher</servlet-name> 
     <url-pattern>/</url-pattern> 
    </servlet-mapping> 
</web-app>

調度-servlet.xml中

<?xml version='1.0' encoding='UTF-8' ?> 
<!-- was: <?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:p="http://www.springframework.org/schema/p" 
     xmlns:context="http://www.springframework.org/schema/context" 
     xmlns:aop="http://www.springframework.org/schema/aop" 
     xmlns:tx="http://www.springframework.org/schema/tx" 
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd 
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 

    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/> 


    <bean id="viewResolver" 
      class="org.springframework.web.servlet.view.InternalResourceViewResolver" 
      p:prefix="/WEB-INF/jsp/" 
      p:suffix=".jsp" /> 


    <context:component-scan base-package="service, controller, dao" /> 

</beans>

當我嘗試部署的應用程序，我我有很多例外。首先是：

Warning: Exception while dispatching an event 
java.lang.NullPointerException 
    at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.getStatus(JtaStatusHelper.java:76) 
    at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.isActive(JtaStatusHelper.java:118) 
    at org.hibernate.engine.transaction.internal.jta.CMTTransaction.join(CMTTransaction.java:149) 
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:1602) 
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.postInit(AbstractEntityManagerImpl.java:210) 
    at org.hibernate.jpa.internal.EntityManagerImpl.<init>(EntityManagerImpl.java:91) 
    at org.hibernate.jpa.internal.EntityManagerFactoryImpl.internalCreateEntityManager(EntityManagerFactoryImpl.java:345) 
    at org.hibernate.jpa.internal.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:313) 
    at org.glassfish.persistence.jpa.JPADeployer$2.visitPUD(JPADeployer.java:451) 
    at org.glassfish.persistence.jpa.JPADeployer$PersistenceUnitDescriptorIterator.iteratePUDs(JPADeployer.java:510) 
    at org.glassfish.persistence.jpa.JPADeployer.iterateInitializedPUsAtApplicationPrepare(JPADeployer.java:492) 
    at org.glassfish.persistence.jpa.JPADeployer.event(JPADeployer.java:398) 
    at org.glassfish.kernel.event.EventsImpl.send(EventsImpl.java:131) 
    at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:487) 
    at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:219) 
    at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:491) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:539) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:535) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at javax.security.auth.Subject.doAs(Subject.java:360) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$2.execute(CommandRunnerImpl.java:534) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:565) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:557) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at javax.security.auth.Subject.doAs(Subject.java:360) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:556) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1464) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1300(CommandRunnerImpl.java:109) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1846) 
    at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1722) 
    at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:534) 
    at com.sun.enterprise.v3.admin.AdminAdapter.onMissingResource(AdminAdapter.java:224) 
    at org.glassfish.grizzly.http.server.StaticHttpHandlerBase.service(StaticHttpHandlerBase.java:189) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571) 
    at java.lang.Thread.run(Thread.java:745)

我在做什麼錯？感謝您的幫助！

來源

2015-12-02 bartex9

你可以顯示你的Hibernate配置嗎？ – dunni

我需要嗎？我在網上找到了很多例子，'.cfg.xml'文件不是必需的。 – bartex9

您至少必須指定例如事務管理器查找類與Glassfish一起工作。見http://docs.jboss.org/hibernate/orm/4.3/manual/en-US/html_single/#jtamanagerlookup – dunni

您的代碼試圖創建一個JTA功能的實體管理器，因爲你配置了持久性單元爲JTA-enabled：

<persistence-unit name="LibraryPU" transaction-type="JTA"> 
    <provider>org.hibernate.ejb.HibernatePersistence</provider> 
    <jta-data-source>java:app/library</jta-data-source> 
</persistence-unit>

但是JTA功能的新興市場通常不被通過的webapps創建。

如果你真的想要一個簡單的web應用程序，你應該最有可能去一個簡單的持久性單元。如果您按照上面的鏈接（章節：有效的RESOURCE_LOCAL單位用法），您將看到有什麼不同。一個簡單的配置可能看起來像這樣：

<persistence> 
    <persistence-unit name="manager1" transaction-type="RESOURCE_LOCAL"> 
     <class>org.hibernate.ejb.test.Cat</class> 
     <class>org.hibernate.ejb.test.Distributor</class> 
     <class>org.hibernate.ejb.test.Item</class> 
     <properties> 
      <property name="javax.persistence.jdbc.driver" value="org.hsqldb.jdbcDriver"/> 
      <property name="javax.persistence.jdbc.user" value="sa"/> 
      <property name="javax.persistence.jdbc.password" value=""/> 
      <property name="javax.persistence.jdbc.url" value="jdbc:hsqldb:."/> 
      <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/ 
      <property name="hibernate.max_fetch_depth" value="3"/> 

      <!-- cache configuration --> 
      <property name="hibernate.ejb.classcache.org.hibernate.ejb.test.Item" value="read-write"/> 
      <property name="hibernate.ejb.collectioncache.org.hibernate.ejb.test.Item.distributors" value="read-write, RegionName"/> 

      <!-- alternatively to <class> and <property> declarations, you can use a regular hibernate.cfg.xml file --> 
      <!-- property name="hibernate.ejb.cfgfile" value="/org/hibernate/ejb/test/hibernate.cfg.xml"/ --> 
     </properties> 
    </persistence-unit> 
    </persistence>

來源

2015-12-03 08:37:13

Spring與休眠JPA - 運行時錯誤

回答

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