这是我第一次玩hibernate/JPA2。我收到“无法构建 EntityManagerFactory”。你能告诉我问题出在哪里吗？
这是我的persistence.xml：
<?xml version="1.0" encoding="UTF-8"?><persistence version="2.0" 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_2_0.xsd">
<persistence-unit name="pdfEx" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>iw.pdfEx.persistence.Pdf</class>
<class>iw.pdfEx.persistence.XmlConversion</class>
<properties>
<property name="hibernate.connection.username" value="icite"/>
<property name="hibernate.connection.password" value="${hpass}"/>
<property name="hibernate.connection.url" value="${hurl}"/>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
</properties>
</persistence-unit>
这是我的测试课：
public class PersistenceTest {
private static EntityManagerFactory emf;
private static EntityManager em;
private static String randomPDFname;
private static String randomGITversion;
private static long sysTime = 0;
@BeforeClass
public static void createEntityManagerFactory() {
Logger.getLogger(FileConverter.class.getName()).log(Level.INFO, "hibernate URL is "+System.getProperty("hurl"));
Logger.getLogger(FileConverter.class.getName()).log(Level.INFO, "the path to pdf2xml is "+System.getProperty("pdf2xml"));
emf = Persistence.createEntityManagerFactory("pdfEx");
Logger.getLogger(FileConverter.class.getName()).log(Level.INFO, "PersistenceTest: EM factory created!");
randomPDFname = "random-pdf-name-"+UUID.randomUUID().toString();
randomGITversion = "random-git-version-"+UUID.randomUUID().toString();
sysTime = Math.round(System.currentTimeMillis()/((10^3)*3600));//systime in hours, rather than millisecs
}
@Before
public void beginTransaction() {
em = (EntityManager) Persistence.createEntityManagerFactory("pdfEx").createEntityManager();
em.getTransaction().begin();
}
@After
public void rollbackTransaction() {
if (em.getTransaction().isActive())
em.getTransaction().rollback();
if (em.isOpen())
em.close();
}
@AfterClass
public static void closeEntityManagerFactory() {
emf.close();
}
@Test
public void dbTest() {
//fail("Not yet implemented");
Pdf testPdf = new Pdf();
testPdf.setName(randomPDFname);
testPdf.setSize(sysTime);
//check that testPDF is, indeed, not yet in the DB:
Query getPDF = em.createNamedQuery("Pdf.Queries.PdfByNameAndSize");
getPDF.setParameter("pdfname", testPdf.getName());
getPDF.setParameter("pdfsize", testPdf.getSize());
List foundPDFs = getPDF.getResultList();
assertTrue("Random PDF "+randomPDFname+" is already in the DB", foundPDFs == null || foundPDFs.size() == 0 );
//persist testPdf in the DB
em.persist(testPdf);
//em.flush();
Logger.getLogger(FileConverter.class.getName()).log(Level.INFO, "Persisted testPdf");
//retrieve testPdf from the DB
Pdf thePDF = (Pdf) getPDF.getSingleResult();//trying to re-run the query
//and use it as a reference in a new XmlConversion
XmlConversion testXml = new XmlConversion();
testXml.setGitVersion(randomGITversion);
testXml.setPdf(thePDF);
testXml.setXmlOutputSize(sysTime);
//verify there is no such XmlConversion
Query getXML = em.createNamedQuery("XmlConversion.Queries.XmlByPdfAndGit");
getXML.setParameter("pdfname", testXml.getPdf());
getXML.setParameter("gitversion", testXml.getGitVersion());
List foundXMLs = getXML.getResultList();
assertTrue("XmlConversion is already in the DB", foundXMLs == null || foundXMLs.size() == 0 );
//store XmlConversion in the DB
em.persist(testXml);
//em.flush();
//retrieve XmlConversion from the DB
foundXMLs = getXML.getResultList();
assertTrue("XmlConversion is not in the DB", foundXMLs.size() == 1);
Logger.getLogger(FileConverter.class.getName()).log(Level.INFO, "PersistenceTest successful!");
}
}
这是可持久实体之一：
@Entity @NamedQuery(
name="Pdf.Queries.PdfByNameAndSize",
query="SELECT c FROM Pdf c WHERE c.name = :pdfname AND c.size = :pdfsize") @Table(name = "t_pdf") public class Pdf implements java.io.Serializable { @Column(nullable=false)
private Integer id;
@Column(nullable=false)
private String name;
@Column(nullable=false)
private Long size;
private Set<XmlConversion> xmlConversions = new HashSet<XmlConversion>(0);
public Pdf() {
}
public Pdf(String name, Long size) {
this.name = name;
this.size = size;
}
public Pdf(String name, Long size, Set<XmlConversion> xmlConversions) {
this.name = name;
this.size = size;
this.xmlConversions = xmlConversions;
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public Integer getId() {
return this.id;
}
public void setId(Integer id) {
this.id = id;
}
@Column(name = "name", nullable = false, length = 245)
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
@Column(name = "size", nullable = false, length = 16777215)
public Long getSize() {
return this.size;
}
public void setSize(Long size) {
this.size = size;
}
@OneToMany(fetch = FetchType.LAZY, mappedBy = "pdf")
public Set<XmlConversion> getXmlConversions() {
return this.xmlConversions;
}
public void setXmlConversions(Set<XmlConversion> xmlConversions) {
this.xmlConversions = xmlConversions;
}
这里是另一个：
@Entity @NamedQuery(
name="XmlConversion.Queries.XmlByPdfAndGit",
query="SELECT c FROM XmlConversion c WHERE c.pdf = :pdfname AND c.gitVersion = :git" ) @Table(name = "t_xml_conversion") public class XmlConversion implements java.io.Serializable {
private Integer id;
private Pdf pdf;
private Long xmlOutputSize;
private String gitVersion;
private Integer durationMillisec;
private Date createdAt;
public XmlConversion() {
}
public XmlConversion(Pdf pdf, String gitVersion) {
this.pdf = pdf;
this.gitVersion = gitVersion;
}
public XmlConversion(Pdf pdf, Long xmlOutputSize, String gitVersion,
Integer durationMillisec) {
this.pdf = pdf;
this.xmlOutputSize = xmlOutputSize;
this.gitVersion = gitVersion;
this.durationMillisec = durationMillisec;
}
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public Integer getId() {
return this.id;
}
public void setId(Integer id) {
this.id = id;
}
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "PDF_id", nullable = false)
public Pdf getPdf() {
return this.pdf;
}
public void setPdf(Pdf pdf) {
this.pdf = pdf;
}
@Column(name = "xml_output_size")
public Long getXmlOutputSize() {
return this.xmlOutputSize;
}
public void setXmlOutputSize(Long xmlOutputSize) {
this.xmlOutputSize = xmlOutputSize;
}
@Column(name = "git_version", nullable = false, length = 45)
public String getGitVersion() {
return this.gitVersion;
}
public void setGitVersion(String gitVersion) {
this.gitVersion = gitVersion;
}
@Column(name = "duration_millisec")
public Integer getDurationMillisec() {
return this.durationMillisec;
}
@Column(name = "created_at", nullable = false, columnDefinition="TIMESTAMP DEFAULT CURRENT_TIMESTAMP")
public Date getCreatedAt() {
return this.createdAt;
}
public void setDurationMillisec(Integer durationMillisec) {
this.durationMillisec = durationMillisec;
}
以下是maven依赖项：
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.directory.studio</groupId>
<artifactId>org.apache.commons.io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.25</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.2.3.Final</version>
<scope>runtime</scope>
</dependency>
当我尝试“maven test”时，我得到：
iw.pdfEx.PersistenceTest Time elapsed: 3.156 sec <<< ERROR! javax.persistence.PersistenceException: [PersistenceUnit: pdfEx] Unable to build EntityManagerFactory
at org.hibernate.property.BasicPropertyAccessor.createSetter(BasicPropertyAccessor.java:252)
at org.hibernate.property.BasicPropertyAccessor.getSetter(BasicPropertyAccessor.java:245)
at org.hibernate.mapping.Property.getSetter(Property.java:326)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildPropertySetter(PojoEntityTuplizer.java:444)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:201)
at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:82)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:135)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:188)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:341)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:507)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:146)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at org.hibernate.persister.internal.PersisterFactoryImpl.create(PersisterFactoryImpl.java:163)
at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:135)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:385)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1769)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:96)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:914)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:899)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:59)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
at iw.pdfEx.PersistenceTest.createEntityManagerFactory(PersistenceTest.java:42)
这是我在surefire报告中找到的测试输出：
Jul 28, 2013 12:11:25 PM iw.pdfEx.PersistenceTest createEntityManagerFactory
INFO: hibernate URL is jdbc:mysql://localhost:8600/icite Jul 28, 2013 12:11:25 PM iw.pdfEx.PersistenceTest createEntityManagerFactory
INFO: the path to pdf2xml is /home/nikolay/Documents/invoiceFairy/pdf2xml/pdftoxml.linux64.exe.1.2_7 Jul 28, 2013 12:11:26 PM org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.2.Final} Jul 28, 2013 12:11:26 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.2.3.Final} Jul 28, 2013 12:11:26 PM org.hibernate.cfg.Environment <clinit> INFO: HHH000206: hibernate.properties not found Jul 28, 2013 12:11:26 PM org.hibernate.cfg.Environment buildBytecodeProvider INFO: HHH000021: Bytecode provider name : javassist Jul 28, 2013 12:11:27 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!) Jul 28, 2013 12:11:27 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000115: Hibernate connection pool size: 20 Jul 28, 2013 12:11:27 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000006: Autocommit mode: true Jul 28, 2013 12:11:27 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000401: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:8600/icite] Jul 28, 2013 12:11:27 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000046: Connection properties: {user=icite, password=****, autocommit=true, release_mode=auto} Jul 28, 2013 12:11:27 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect Jul 28, 2013 12:11:28 PM org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService
INFO: HHH000268: Transaction strategy: org.hibernate.engine.transaction.internal.jdbc.JdbcTransactionFactory Jul 28, 2013 12:11:28 PM org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init>
INFO: HHH000397: Using ASTQueryTranslatorFactory