JPA，EJB错误HHH000262：找不到表：员工

时间：2015-08-30 09:35:37

标签： java hibernate maven jpa ejb

我有一个简单的maven项目，使用jpa和ejb，它运行在服务器glassfish 4.1

上

我的persistence.xml文件是：

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last pid: 22963;  load averages:  0.56,  0.20,  0.12    up 1+02:30:06  

11:39:54
139 processes: 1 running, 127 sleeping, 10 stopped, 1 zombie
CPU:     % user,     % nice,     % system,     % interrupt,     % idle
Mem: 384M Active, 331M Inact, 198M Wired, 2716K Cache, 87M Buf, 4995M Free
Swap: 4096M Total, 4096M Free

  PID USERNAME    THR PRI NICE   SIZE    RES STATE   C   TIME    WCPU COMMAND
  789 root         45  20    0  1051M   343M wait    3   2:48   0.00% java
22894 _relayd       3  52    0   132M 67504K nanslp  0   1:03   0.00% relayd
22893 _relayd       3  52    0   128M 64464K nanslp  3   1:02   0.00% relayd
22892 _relayd       3  52    0   132M 68212K nanslp  3   1:01   0.00% relayd
22891 _relayd       3  52    0   132M 70368K nanslp  3   0:58   0.00% relayd
  674 root          1  20    0 12080K  1688K select  0   0:42   0.00% syslogd
  726 root          2  20    0 28904K  4844K select  0   0:23   0.00% monit
  892 pgsql         1  20    0   186M 28876K sbwait  1   0:23   0.00% postgres
  890 pgsql         1  20    0   182M 24872K sbwait  3   0:23   0.00% postgres
  891 pgsql         1  20    0   182M 24132K sbwait  2   0:20   0.00% postgres
  762 root          1  20    0 12088K  1596K select  0   0:17   0.00% powerd
22888 root          1  52    0 90356K 30196K kqread  0   0:06   0.00% relayd
  759 root          1  20    0 22264K  3764K select  2   0:05   0.00% ntpd
  779 pgsql         1  52    0   178M 17360K select  2   0:04   0.00% postgres
  816 root          1  20    0 20344K  4880K select  0   0:04   0.00% sendmail
  785 pgsql         1  20    0 37700K  7072K select  2   0:03   0.00% postgres
  784 pgsql         1  20    0   178M 18352K select  0   0:02   0.00% postgres
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我的实体文件Employee.java：

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<?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="EmployeeService" transaction-type="JTA">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <class>com.bkstorm.jpa.model.Employee</class>
        <properties>
            <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/jpa" />
            <property name="javax.persistence.jdbc.user" value="root" />
            <property name="javax.persistence.jdbc.password" value="123456a@" />
            
            <property name="hibernate.show_sql" value="true"/>
            <property name="hibernate.format_sql" value="true"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
            <property name="hibernate.hbm2ddl.auto" value="validate"/>
            <!-- Configuring Connection Pool -->
            <property name="hibernate.c3p0.min_size" value="5"/>
            <property name="hibernate.c3p0.max_size" value="20"/>
            <property name="hibernate.c3p0.timeout" value="500"/>
            <property name="hibernate.c3p0.max_statements" value="50"/>
            <property name="hibernate.c3p0.idle_test_period" value="2000"/>
            <property name="javax.persistence.schema-generation.database.action" value="create"/>
        </properties>
    </persistence-unit>
</persistence>
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我有一个ejb会话bean： EmployeeService.java

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@Entity
@Table(name = "employee")
public class Employee implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "emp_id")
    private int id;
    @Column(name = "name")
    private String name;
    @Column(name = "sal")
    private int salary;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getSalary() {
        return salary;
    }

    public void setSalary(int salary) {
        this.salary = salary;
    }

    @Override
    public String toString() {
        return "Employee id: " + getId() + " name: " + getName() + " salary: " + getSalary();
    }
}
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和实现EmployeeService的EmployeeServiceBean.java

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public interface EmployeeService {

    public Employee createEmployee(String name, int salary);

    public Collection<Employee> findAllEmployees();
}
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的pom.xml

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@Stateless
public class EmployeeServiceBean implements EmployeeService {

    @PersistenceContext(unitName = "EmployeeService")
    protected EntityManager em;

    @Override
    public Employee createEmployee(String name, int salary) {
        Employee emp = new Employee();
        emp.setName(name);
        emp.setSalary(salary);
        em.persist(emp);
        return emp;
    }

    @Override
    public Collection<Employee> findAllEmployees() {
        Query query = em.createQuery("SELECT e FROM Employee e");
        return (Collection<Employee>) query.getResultList();
    }

}
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这是我的错误记录：

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.bkstorm.jpa</groupId>
    <artifactId>autoIdGeneration</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>autoIdGeneration</name>

    <dependencies>
        <!-- JPA -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>4.3.11.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>4.3.2.Final</version>
        </dependency>
        
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.3.11.Final</version>
        </dependency>

        <!-- For connection pooling -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-c3p0</artifactId>
            <version>4.3.11.Final</version>
        </dependency>

        <!-- Database -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.36</version>
        </dependency>

        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>7.0</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.6</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>
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我不知道错误的来源。任何想法，谢谢！

更新1： 改变＆＃34;验证＆＃34;到＆＃34;更新＆＃34;没有解决我的问题。 employee表存在于我的数据库中。 当我运行glassfish服务器时，它会显示log：

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Info:   HV000001: Hibernate Validator 5.0.0.Final
Info:   HHH000204: Processing PersistenceUnitInfo [
	name: EmployeeService
	...]
Info:   HHH000412: Hibernate Core {5.0.0.Final}
Info:   HHH000206: hibernate.properties not found
Info:   HHH000021: Bytecode provider name : javassist
Info:   HCANN000001: Hibernate Commons Annotations {5.0.0.Final}
Info:   HHH000400: Using dialect: org.hibernate.dialect.MySQL5InnoDBDialect
Info:   HHH000229: Running schema validator
Info:   HHH000262: Table not found: employee
Info:   HHH000262: Table not found: employee
Severe:   Exception while invoking class org.glassfish.persistence.jpa.JPADeployer prepare method
Severe:   javax.persistence.PersistenceException: [PersistenceUnit: EmployeeService] Unable to build Hibernate SessionFactory
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:877)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:805)
	at org.hibernate.jpa.HibernatePersistenceProvider.createContainerEntityManagerFactory(HibernatePersistenceProvider.java:135)
	at org.glassfish.persistence.jpa.PersistenceUnitLoader.loadPU(PersistenceUnitLoader.java:199)
	at org.glassfish.persistence.jpa.PersistenceUnitLoader.<init>(PersistenceUnitLoader.java:107)
	at org.glassfish.persistence.jpa.JPADeployer$1.visitPUD(JPADeployer.java:223)
	at org.glassfish.persistence.jpa.JPADeployer$PersistenceUnitDescriptorIterator.iteratePUDs(JPADeployer.java:510)
	at org.glassfish.persistence.jpa.JPADeployer.createEMFs(JPADeployer.java:230)
	at org.glassfish.persistence.jpa.JPADeployer.prepare(JPADeployer.java:168)
	at com.sun.enterprise.v3.server.ApplicationLifecycle.prepareModule(ApplicationLifecycle.java:925)
	at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:434)
	at com.sun.enterprise.v3.server.ApplicationLoaderService.processApplication(ApplicationLoaderService.java:406)
	at com.sun.enterprise.v3.server.ApplicationLoaderService.postConstruct(ApplicationLoaderService.java:243)
	at org.jvnet.hk2.internal.ClazzCreator.postConstructMe(ClazzCreator.java:329)
	at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:377)
	at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:461)
	at org.glassfish.hk2.runlevel.internal.AsyncRunLevelContext.findOrCreate(AsyncRunLevelContext.java:227)
	at org.glassfish.hk2.runlevel.RunLevelContext.findOrCreate(RunLevelContext.java:84)
	at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2258)
	at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:105)
	at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:87)
	at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$QueueRunner.oneJob(CurrentTaskFuture.java:1162)
	at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$QueueRunner.run(CurrentTaskFuture.java:1147)
	at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$UpOneLevel.run(CurrentTaskFuture.java:753)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: missing table [employee]
	at org.hibernate.tool.schema.internal.SchemaValidatorImpl.validateTable(SchemaValidatorImpl.java:67)
	at org.hibernate.tool.schema.internal.SchemaValidatorImpl.doValidation(SchemaValidatorImpl.java:50)
	at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:91)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:484)
	at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:802)
	... 25 more
Severe:   Exception while preparing the app
Severe:   Exception during lifecycle processing
javax.persistence.PersistenceException: [PersistenceUnit: EmployeeService] Unable to build Hibernate SessionFactory
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:877)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:805)
	at org.hibernate.jpa.HibernatePersistenceProvider.createContainerEntityManagerFactory(HibernatePersistenceProvider.java:135)
	at org.glassfish.persistence.jpa.PersistenceUnitLoader.loadPU(PersistenceUnitLoader.java:199)
	at org.glassfish.persistence.jpa.PersistenceUnitLoader.<init>(PersistenceUnitLoader.java:107)
	at org.glassfish.persistence.jpa.JPADeployer$1.visitPUD(JPADeployer.java:223)
	at org.glassfish.persistence.jpa.JPADeployer$PersistenceUnitDescriptorIterator.iteratePUDs(JPADeployer.java:510)
	at org.glassfish.persistence.jpa.JPADeployer.createEMFs(JPADeployer.java:230)
	at org.glassfish.persistence.jpa.JPADeployer.prepare(JPADeployer.java:168)
	at com.sun.enterprise.v3.server.ApplicationLifecycle.prepareModule(ApplicationLifecycle.java:925)
	at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:434)
	at com.sun.enterprise.v3.server.ApplicationLoaderService.processApplication(ApplicationLoaderService.java:406)
	at com.sun.enterprise.v3.server.ApplicationLoaderService.postConstruct(ApplicationLoaderService.java:243)
	at org.jvnet.hk2.internal.ClazzCreator.postConstructMe(ClazzCreator.java:329)
	at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:377)
	at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:461)
	at org.glassfish.hk2.runlevel.internal.AsyncRunLevelContext.findOrCreate(AsyncRunLevelContext.java:227)
	at org.glassfish.hk2.runlevel.RunLevelContext.findOrCreate(RunLevelContext.java:84)
	at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2258)
	at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:105)
	at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:87)
	at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$QueueRunner.oneJob(CurrentTaskFuture.java:1162)
	at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$QueueRunner.run(CurrentTaskFuture.java:1147)
	at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$UpOneLevel.run(CurrentTaskFuture.java:753)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: missing table [employee]
	at org.hibernate.tool.schema.internal.SchemaValidatorImpl.validateTable(SchemaValidatorImpl.java:67)
	at org.hibernate.tool.schema.internal.SchemaValidatorImpl.doValidation(SchemaValidatorImpl.java:50)
	at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:91)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:484)
	at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:802)
	... 25 more
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然后，我执行EmployeeServiceBean.fillAllEmployees，发生错误。 我不知道发生了什么！

3 个答案:

答案 0 :(得分：7)

从＆＃39;验证＆＃39;更改hibernate.hbm2ddl.auto值更新＆＃39;并且hibernate为你创建表。

<property name="hibernate.hbm2ddl.auto" value="update"/>

答案 1 :(得分：2)

试试这个，它对我有用：

<property name="hibernate.hbm2ddl.auto" value="create"/>

答案 2 :(得分：0)

对我而言，定义两个属性看起来很可疑：

type Tree' a = Maybe (Tree'' a)

data Tree'' t = Node' t (Tree' t) (Tree' t)
   deriving (Functor)

instance Comonad Tree'' where
  extract (Node' x _ _) = x
  duplicate t@(Node' _ b1 b2) = Node' t (fmap duplicate b1) (fmap duplicate b2)

和

<property name="hibernate.hbm2ddl.auto" value="validate"/>

这两个属性用于告诉JPA提供程序如何处理架构。 后者从JPA 2.1开始存在，现在是首选的可移植方式，因此我建议删除hibernate特定的属性。

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