postgresql - Glassfish 4 和 Postgres ConnectionPool 上的 JSF 2.2 + EJB 3 + JPA

Question

我的应用程序基于带有 Postgres 9.2 DB 的 Glassfish 4 上的 JSF 2.2 EJB 3 JPA。我在 Glassfish 上创建了一个 ConnectionPool 和 Datasource，并通过相关的 Datasource JNDI 名称在我的应用程序中使用它。我有两个 Facelets 页面:

• login.xhtml 调用 BackingBean LoginBacking，后者调用 UserManagement EJB 上的登录方法，后者使用 JPA 持久性单元检查登录。在这种情况下，一切正常，用户可以登录，如果电子邮件已经存在，系统会通知用户他已经注册。

• registration.xhtml 调用 BackingBean RegistrationBacking，后者调用 UserManagement EJB 上的 register 方法，使用 JPA 持久性单元将用户持久保存到数据库中。注册无效!通过查看 Glassfish 日志，我发现了以下异常:

          Finer:   client acquired: 553217772
  Finer:   TX binding to tx mgr, status=STATUS_ACTIVE
  Finer:   acquire unit of work: 218748741
  Finer:   begin unit of work flush
  Finer:   end unit of work flush
  Finest:   Execute query ReadAllQuery(referenceClass=MomUser sql="SELECT id, classname, company, email, firstname, insertion_date, lastname, password, status, systemuser FROM momuser WHERE (email = ?)")
  Finest:   Connection acquired from connection pool [read].
  Finest:   reconnecting to external connection pool
  Fine:   SELECT id, classname, company, email, firstname, insertion_date, lastname, password, status, systemuser FROM momuser WHERE (email = ?)
  bind => [1 parameter bound]
  Finest:   Connection released to connection pool [read].
  Finer:   TX beforeCompletion callback, status=STATUS_ACTIVE
  Finer:   begin unit of work commit
  Finer:   TX afterCompletion callback, status=COMMITTED
  Finer:   end unit of work commit
  Finer:   release unit of work
  Finer:   client released
  Finer:   client acquired: 1869986747
  Finer:   TX binding to tx mgr, status=STATUS_ACTIVE
  Finer:   acquire unit of work: 76560055
  Finer:   TX afterCompletion callback, status=ROLLEDBACK
  Finer:   release unit of work
  Finer:   client released
  Warning:   EJB5184:A system exception occurred during an invocation on EJB MomUserManager, method: public void eu.fabrig.mom.session.MomUserManager.registerUser(eu.fabrig.mom.jpa.entity.MomUser) throws eu.fabrig.mom.exception.UserExistsException
  Warning:   javax.ejb.EJBException
      at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:748)
      at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:698)
  ...
  at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
  at java.lang.Thread.run(Thread.java:744)
  Caused by: java.lang.IllegalArgumentException: Object: MomUser{id=null, classname=MOMUser, status=A, systemuser=null, insertionDate=null, email=a@c.it, password=098f6bcd4621d373cade4e832627b4f6, firstname=test, lastname=test, company=Test S.p.A.} is not a known entity type.
      at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4222)
  ...
      at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
      ... 54 more
  
  Severe:   javax.ejb.EJBException
      at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:748)
      at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:698)
  ...
      at java.lang.Thread.run(Thread.java:744)    
  Caused by: java.lang.IllegalArgumentException: Object: MomUser{id=null, classname=MOMUser, status=A, systemuser=null, insertionDate=null, email=a@c.it, password=098f6bcd4621d373cade4e832627b4f6, firstname=test, lastname=test, company=Test S.p.A.} is not a known entity type.
      at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4222)
      at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:496)
  ...
      at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
      ... 54 more
  
  Info:   ### You can do the cleanup here
  

在我的 persistence.xml 下:

<?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="eu.fabrig_MOM.PU" transaction-type="JTA">
    <jta-data-source>myDataSource</jta-data-source>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <!-- <class>eu.fabrig.mom.jpa.entity.MomUser</class> -->
    <properties>
      <property name="eclipselink.logging.level" value="FINEST"/>
    </properties>
  </persistence-unit>
</persistence>

我的实体和托管 Bean 类:

@Entity
@Table(name = "momuser")
@Named
@RequestScoped
@XmlRootElement
public class MomUser implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "user_seq_gen")
@SequenceGenerator(name = "user_seq_gen", sequenceName = "mom_seq_id")
@Basic(optional = false)
@Column(name = "id")
private Integer id;
@Basic(optional = false)
@Size(min = 1, max = 100)
@Column(name = "classname")
private String classname = "MOMUser";
@Column(name = "status")
private Character status = 'A';
@Size(max = 100)
@Column(name = "systemuser")
private String systemuser;
@Basic(optional = false)
@Column(name = "insertion_date", insertable = false, updatable = false)
@Temporal(TemporalType.TIMESTAMP)
private Date insertionDate;
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 255)
@Column(name = "email")
private String email;
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 255)
@Column(name = "password")
private String password;
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 255)
@Column(name = "firstname")
private String firstname;
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 255)
@Column(name = "lastname")
private String lastname;
@Size(max = 100)
@Column(name = "company")
private String company;
...
// Getters and Setters

在 EJB 方法下面:

@Override
public void registerUser(MomUser user) throws UserExistsException {
    try {
        user.setPassword(generateMD5Hash(user.getPassword()));
        em.persist(user);
    } catch (UnsupportedEncodingException | NoSuchAlgorithmException ex) {
        Logger.getLogger(MomUserManager.class.getName()).log(Level.SEVERE, null, ex);
    }
}

Backing bean 方法:

public String register(){
    try {
        MomUser currentMomUser = (MomUser) evaluateEL("#{momUser}", MomUser.class);
        MomUser momUser = userManager.getUser(currentMomUser.getEmail());
        if (momUser != null) {
            getContext().addMessage(null, new FacesMessage(EMAIL_ALREADY_EXISTS));
            return null;
        }
        try {
            userManager.registerUser(currentMomUser);
        } catch (UserExistsException ex) {
            Logger.getLogger(RegistrationBacking.class.getName()).log(Level.SEVERE, null, ex);
            getContext().addMessage(null, new FacesMessage(EMAIL_ALREADY_EXISTS));
            return null;
        }
    } catch (Exception ex) {
        Logger.getLogger(RegistrationBacking.class.getName()).log(Level.SEVERE, null, ex);
        getContext().addMessage(null, new FacesMessage(SYSTEM_ERROR));
        return null;            
    }

    return "login";
}

以及注册Facelet:

            <f:facet name="header">
                <h:outputText value="#{bundle['application.registerpage.registrationMessage']}"/>
            </f:facet>

            <h:outputText value="#{bundle['momuser.email']}"/><h:inputText id="email"
                         value="#{momUser.email}"
                         required="true"
                         requiredMessage="#{bundle['momuser.email.validation']}" 
                         validatorMessage="#{bundle['momuser.email.invalid']}">
                <f:validateRegex pattern="[\w\.-]*[a-zA-Z0-9_]@[\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]"/> 
            </h:inputText>
            <h:message for="email" styleClass="errorMessage"/>

            <h:outputText value="#{bundle['momuser.password']}"/>
            <h:inputSecret id="password"
                           value="#{momUser.password}"
                           required="true"
                           requiredMessage="#{bundle['momuser.password.validation']}"></h:inputSecret>
            <h:message for="password" styleClass="errorMessage"/>

            <h:outputText value="#{bundle['momuser.firstname']}"/>
            <h:inputText id="firstname"
                         value="#{momUser.firstname}"
                         required="true"
                         requiredMessage="#{bundle['momuser.firstname.validation']}"/>
            <h:message for="firstname" styleClass="errorMessage"/>

            <h:outputText value="#{bundle['momuser.lastname']}"/>
            <h:inputText id="lastname"
                         value="#{momUser.lastname}"
                         required="true"
                         requiredMessage="#{bundle['momuser.lastname.validation']}"/>
            <h:message for="lastname" styleClass="errorMessage"/>

            <h:outputText value="#{bundle['momuser.company']}"/>
            <h:inputText id="company"
                         value="#{momUser.company}"
                         required="false"/>
            <h:message for="company" styleClass="errorMessage"/>

            
            <f:facet name="footer">
                <h:panelGroup style="display:block; text-align:center">
                    <h:commandButton value="#{bundle['application.registrationpage.proceed']}" action="/registration/registrationconfirm?faces-redirect=true"/>
                    <h:commandButton value="Register" action="#{registrationBacking.register}"/>
                    <h:link value="#{bundle['application.registrationpage.gotologin']}" outcome="/login"/>
                    <h:messages globalOnly="true" styleClass="errorMessage"/>
                </h:panelGroup>
            </f:facet>
        </h:panelGrid>
    </h:form>

你有什么想法吗？为什么我可以登录但无法注册新用户？

谢谢

Answer 1

感谢@unwichtich 的回答，但我终于找到了问题所在，这是我疏忽造成的!我导入了错误的@SessionScope，它带有 JSF 上下文 (javax.faces.bean.SessionScoped)，而不是带有企业上下文 (javax.enterprise.context.SessionScoped) 的。现在可以注册了!