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java - jpa + hibernate + 独立

转载 作者：行者123 更新时间：2023-12-01 13:19:23 30 4
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我无法理解为什么这种关系没有被持久化，并且程序不会正常退出，但在 Eclipse 中继续运行。

下面是我的代码，排除了包名:

主要:

import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.util.Date;

import PanelDao;
import Panel;
import Panelbinary;


public class PanelService {
    static byte[] file;
    /**
     * @param args
     */
    public static void main(String[] args) {
        try {
            // TODO Auto-generated method stub
            InputStream in = new Object().getClass().getClassLoader().getSystemResourceAsStream("Astrology.zip");
            BufferedInputStream bin = new BufferedInputStream(in);
            byte[] ba = new byte[1024];
            ByteArrayOutputStream bout = new ByteArrayOutputStream();
            int n = -1;
            while(-1 != (n = bin.read(ba))) {
                bout.write(ba, 0, n);
            }
            file = bout.toByteArray();
            System.out.println("Astrology.zip bytes:" + file.length);

            if(file.length > 0) {
                Panel p = new PanelService().uploadAstrologoyPanel();
                System.out.println("panel id=" + p.getId());
                System.out.println("panelbinaryid=" + p.getPanelbinaries().get(0).getId());

            }

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


    }

    public Panel uploadAstrologoyPanel() {
        Panel p = new Panel();
        PanelDao pd = new PanelDao();

        Date d = new Date();
        p.setPanelcategoryid(new BigDecimal(1));//books
        p.setPanelbinarytypeid(new BigDecimal(5));//json
        p.setDescription("Astrology");
        p.setDisplayname("Astrology");
        p.setFilterid(new BigDecimal(1));//all devices
        p.setLabel("Astrology");
        p.setPackagename("com.jio.panel.astrology");
        p.setCreated(d);
        p.setModified(d);
        pd.create(p);

        Panelbinary pb = new Panelbinary();
        pb.setActive(new BigDecimal(0));
        pb.setArtifact(file);
        pb.setArtifactsize(new BigDecimal(file.length));
        pb.setUserversion("1");
        pb.setWidget(new BigDecimal(0));
        pb.setCreated(d);
        pb.setModified(d);
        pb.setIncversion(new BigDecimal(1));
        p.addPanelbinary(pb);
        //pb.setPanel(p);

        p = pd.update(p);
        pd.entityManager.close();
        return p;

    }   

}

PanelBinary 实体

import java.io.Serializable;
import java.math.BigDecimal;
import java.sql.Timestamp;
import java.util.Date;

import javax.persistence.*;


import org.hibernate.annotations.ForeignKey;


/**
 * The persistent class for the PANELBINARY_ database table.
 * 
 */
@Entity
@Table(
        name = "PANELBINARY_",
        uniqueConstraints = { @UniqueConstraint(
                name = "PB_PID_IV_UK",
                columnNames = { "PANELID", "INCVERSION" }),
                @UniqueConstraint(
                        name = "PB_PID_UV_UK",
                        columnNames = { "PANELID", "USERVERSION" }) })
@SequenceGenerator(
        name = "PANELBINARYSEQ",
        sequenceName = "PANELBINARYSEQ",
        allocationSize = 1,
        initialValue = 1)
@SuppressWarnings("serial")
public class Panelbinary implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(generator = "PANELBINARYSEQ", strategy = GenerationType.SEQUENCE)
    private long id;

    @Column(name = "ACTIVE", nullable = false)
    private BigDecimal active;

    @Lob
    @Basic(optional = false, fetch = FetchType.LAZY)
    @Column(name = "ARTIFACT", nullable = false)    private byte[] artifact;

    @Column(name = "ARTIFACTSIZE", nullable = true)
    private BigDecimal artifactsize;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "CREATED", nullable = false)
    private Date created;

    @Lob
    private byte[] icon;

    private BigDecimal iconsize;

    @Column(name = "INCVERSION", nullable = false)
    private BigDecimal incversion;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "MODIFIED", nullable = false)
    private Date modified;

    @Lob
    private byte[] thumbnail;

    private BigDecimal thumbnailsize;


    @Column(name = "USERVERSION", nullable = false, length = 50)
    private String userversion;

    @Column(name = "WIDGET", nullable = true)
    private BigDecimal widget;

    //bi-directional many-to-one association to Panel
    @ManyToOne(optional = false)
    @JoinColumn(name = "PANELID", nullable = false)
    @ForeignKey(name = "PB_PID_FK")
    private Panel panel;

    public Panelbinary() {
    }

    public long getId() {
        return this.id;
    }

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

    public BigDecimal getActive() {
        return this.active;
    }

    public void setActive(BigDecimal active) {
        this.active = active;
    }

    public byte[] getArtifact() {
        return this.artifact;
    }

    public void setArtifact(byte[] artifact) {
        this.artifact = artifact;
    }

    public BigDecimal getArtifactsize() {
        return this.artifactsize;
    }

    public void setArtifactsize(BigDecimal artifactsize) {
        this.artifactsize = artifactsize;
    }

    public Date getCreated() {
        return this.created;
    }

    public void setCreated(Date created) {
        this.created = created;
    }

    public byte[] getIcon() {
        return this.icon;
    }

    public void setIcon(byte[] icon) {
        this.icon = icon;
    }

    public BigDecimal getIconsize() {
        return this.iconsize;
    }

    public void setIconsize(BigDecimal iconsize) {
        this.iconsize = iconsize;
    }

    public BigDecimal getIncversion() {
        return this.incversion;
    }

    public void setIncversion(BigDecimal incversion) {
        this.incversion = incversion;
    }

    public Date getModified() {
        return this.modified;
    }

    public void setModified(Date modified) {
        this.modified = modified;
    }

    public byte[] getThumbnail() {
        return this.thumbnail;
    }

    public void setThumbnail(byte[] thumbnail) {
        this.thumbnail = thumbnail;
    }

    public BigDecimal getThumbnailsize() {
        return this.thumbnailsize;
    }

    public void setThumbnailsize(BigDecimal thumbnailsize) {
        this.thumbnailsize = thumbnailsize;
    }

    public String getUserversion() {
        return this.userversion;
    }

    public void setUserversion(String userversion) {
        this.userversion = userversion;
    }

    public BigDecimal getWidget() {
        return this.widget;
    }

    public void setWidget(BigDecimal widget) {
        this.widget = widget;
    }

    public Panel getPanel() {
        return this.panel;
    }

    public void setPanel(Panel panel) {
        this.panel = panel;
    }

}

面板实体

import java.io.Serializable;
import java.math.BigDecimal;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.persistence.*;


/**
 * The persistent class for the PANEL_ database table.
 * 
 */
@Entity
@Table(
    name = "PANEL_",
    uniqueConstraints = @UniqueConstraint(
        name = "P_LABEL_PACKAGENAME_UK",
        columnNames = { "LABEL", "PACKAGENAME" }))
@SequenceGenerator(
    name = "PANELSEQ",
    sequenceName = "PANELSEQ",
    allocationSize = 1,
    initialValue = 1)
@SuppressWarnings("serial")
public class Panel implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(generator = "PANELSEQ", strategy = GenerationType.SEQUENCE)
    private long id;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "CREATED", nullable = false)
    private Date created;

    @Column(name = "DESCRIPTION", length = 250)
    private String description;

    @Column(name = "DISPLAYNAME", length = 64)
    private String displayname;

    private BigDecimal filterid;

    private BigDecimal initialstateid;

    @Column(name = "LABEL", nullable = false, length = 100)
    private String label;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "MODIFIED", nullable = false)
    private Date modified;

    @Column(name = "PACKAGENAME", nullable = false, length = 250)
    private String packagename;

    private BigDecimal panelbinarytypeid;

    private BigDecimal panelcategoryid;

    private BigDecimal panelorder;

    //bi-directional many-to-one association to Panelbinary
    @OneToMany(mappedBy="panel")
    private List<Panelbinary> panelbinaries;

    public Panel() {
    }

    public long getId() {
        return this.id;
    }

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

    public Date getCreated() {
        return this.created;
    }

    public void setCreated(Date created) {
        this.created = created;
    }

    public String getDescription() {
        return this.description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getDisplayname() {
        return this.displayname;
    }

    public void setDisplayname(String displayname) {
        this.displayname = displayname;
    }

    public BigDecimal getFilterid() {
        return this.filterid;
    }

    public void setFilterid(BigDecimal filterid) {
        this.filterid = filterid;
    }

    public BigDecimal getInitialstateid() {
        return this.initialstateid;
    }

    public void setInitialstateid(BigDecimal initialstateid) {
        this.initialstateid = initialstateid;
    }

    public String getLabel() {
        return this.label;
    }

    public void setLabel(String label) {
        this.label = label;
    }

    public Date getModified() {
        return this.modified;
    }

    public void setModified(Date modified) {
        this.modified = modified;
    }

    public String getPackagename() {
        return this.packagename;
    }

    public void setPackagename(String packagename) {
        this.packagename = packagename;
    }

    public BigDecimal getPanelbinarytypeid() {
        return this.panelbinarytypeid;
    }

    public void setPanelbinarytypeid(BigDecimal panelbinarytypeid) {
        this.panelbinarytypeid = panelbinarytypeid;
    }

    public BigDecimal getPanelcategoryid() {
        return this.panelcategoryid;
    }

    public void setPanelcategoryid(BigDecimal panelcategoryid) {
        this.panelcategoryid = panelcategoryid;
    }

    public BigDecimal getPanelorder() {
        return this.panelorder;
    }

    public void setPanelorder(BigDecimal panelorder) {
        this.panelorder = panelorder;
    }

    public List<Panelbinary> getPanelbinaries() {
        if(null == panelbinaries) {
            panelbinaries = new ArrayList<Panelbinary>();
        }
        return this.panelbinaries;
    }

    public void setPanelbinaries(List<Panelbinary> panelbinaries) {
        this.panelbinaries = panelbinaries;
    }

    public Panelbinary addPanelbinary(Panelbinary panelbinary) {
        getPanelbinaries().add(panelbinary);
        panelbinary.setPanel(this);

        return panelbinary;
    }

    public Panelbinary removePanelbinary(Panelbinary panelbinary) {
        getPanelbinaries().remove(panelbinary);
        panelbinary.setPanel(null);

        return panelbinary;
    }

}

DAO

import Panel;

public class PanelDao extends GenericDaoJpaImpl<Panel, Integer> {

    @Override
    public Panel create(Panel t) {

        try {
            entityManager.getTransaction().begin();
            super.create(t);
            entityManager.getTransaction().commit();
        } catch (Exception e) {
            e.printStackTrace();
            entityManager.getTransaction().rollback();
        }
        return t;
    }



    @Override
    public Panel update(Panel t) {
        try {
            entityManager.getTransaction().begin();
            super.update(t);
            entityManager.getTransaction().commit();
        } catch (Exception e) {
            e.printStackTrace();

            entityManager.getTransaction().rollback();
        }
        return t;
    }

    @Override
    public void delete(Panel t) {
        try {
            entityManager.getTransaction().begin();
            super.delete(t);
            entityManager.getTransaction().commit();
        } catch (Exception e) {
            e.printStackTrace();

            entityManager.getTransaction().rollback();
        }
    }
}

DAO super 类

import java.io.Serializable;
import java.lang.reflect.ParameterizedType;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.PersistenceContext;

public class GenericDaoJpaImpl<T, PK extends Serializable> 
implements GenericDao<T, PK> {
    static {
    EntityManagerFactory factory = Persistence
            .createEntityManagerFactory("dev2db");
          entityManager = factory.createEntityManager();
    }
    protected Class<T> entityClass;

    @PersistenceContext
    public static EntityManager entityManager;

    public GenericDaoJpaImpl() {
        ParameterizedType genericSuperclass = (ParameterizedType) getClass()
                .getGenericSuperclass();
        this.entityClass = (Class<T>) genericSuperclass
                .getActualTypeArguments()[0];
    }

    @Override
    public T create(T t) {
        this.entityManager.persist(t);
        return t;
    }

    @Override
    public T read(PK id) {
        return this.entityManager.find(entityClass, id);
    }

    @Override
    public T update(T t) {
        return this.entityManager.merge(t);
    }

    @Override
    public void delete(T t) {
        t = this.entityManager.merge(t);
        this.entityManager.remove(t);
    }
}

super dao接口(interface)

import java.io.Serializable;

public interface GenericDao<T, PK extends Serializable> {
    T create(T t);
    T read(PK id);
    T update(T t);
    void delete(T t);
}

持久性.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="dev2db" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <properties>
            <property name="hibernate.archive.autodetection" value="class, hbm"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
            <property name="hibernate.hbm2ddl.auto" value="validate" />

            <property name="javax.persistence.jdbc.driver" value="oracle.jdbc.OracleDriver" />
            <property name="javax.persistence.jdbc.url" value="jdbc:oracle:thin:@host:1521:xxxx" />
            <property name="javax.persistence.jdbc.user" value="xxxx" />
            <property name="javax.persistence.jdbc.password" value="xxxx" />
        </properties>
    </persistence-unit>
</persistence>

日志:

Astrology.zip bytes:267
Mar 04, 2014 1:01:10 PM org.hibernate.ejb.HibernatePersistence logDeprecation
WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
Mar 04, 2014 1:01:10 PM org.hibernate.ejb.HibernatePersistence logDeprecation
WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
Mar 04, 2014 1:01:10 PM org.hibernate.ejb.HibernatePersistence logDeprecation
WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
Mar 04, 2014 1:01:10 PM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
INFO: HHH000204: Processing PersistenceUnitInfo [
    name: dev2db
    ...]
Mar 04, 2014 1:01:10 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.3.1.Final}
Mar 04, 2014 1:01:10 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Mar 04, 2014 1:01:10 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Mar 04, 2014 1:01:11 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.4.Final}
Mar 04, 2014 1:01:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH000402: Using Hibernate built-in connection pool (not for production use!)
Mar 04, 2014 1:01:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH000401: using driver [oracle.jdbc.OracleDriver] at URL [jdbc:oracle:thin:@host:port:sid]
Mar 04, 2014 1:01:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH000046: Connection properties: {user=prodm6_fix, password=****}
Mar 04, 2014 1:01:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH000006: Autocommit mode: false
Mar 04, 2014 1:01:11 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
Mar 04, 2014 1:01:11 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.Oracle10gDialect
Mar 04, 2014 1:01:11 PM org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init>
INFO: HHH000397: Using ASTQueryTranslatorFactory
Mar 04, 2014 1:01:12 PM org.hibernate.tool.hbm2ddl.SchemaValidator validate
INFO: HHH000229: Running schema validator
Mar 04, 2014 1:01:12 PM org.hibernate.tool.hbm2ddl.SchemaValidator validate
INFO: HHH000102: Fetching database metadata
Mar 04, 2014 1:01:12 PM org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000261: Table found: PRODM6_FIX.PANELBINARY_
Mar 04, 2014 1:01:12 PM org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000037: Columns: [icon, thumbnailsize, modified, id, userversion, artifact, thumbnail, created, iconsize, panelid, active, incversion, artifactsize, widget]
Mar 04, 2014 1:01:12 PM org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000261: Table found: xxxx.PANEL_
Mar 04, 2014 1:01:12 PM org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000037: Columns: [panelorder, id, initialstateid, created, panelcategoryid, description, packagename, label, panelbinarytypeid, filterid, modified, displayname]
panel id=13
panelbinaryid=0

我想要得到的是 panel 和 panelbinaryid 都有有效值。我没有看到 panelbinary 被持久保存在数据库中。

即使我关闭实体管理器，插入面板后程序也不会终止。

如果能够通过几行代码和注释轻松添加容器管理的事务，而不是采用全新的方式，那就太好了。

问候，

米滕。

最佳答案

1 - 关于持久性问题，这是因为您的关联由 PanelBinary 管理(由您的属性 @OneToMany(mappedBy="panel") 定义)，并且没有向下级联关系。

要使其正常工作，您需要:

  • 使用 PanelBinary 对象中的面板对象设置面板属性(您已执行此操作并进行了注释!)

  • 用级联属性定义一对多关系

    @OneToMany(cascade=ALL, mappedBy="panel")
    private List<Panelbinary> panelbinaries;

2 - 要使用注释“轻松”设置事务行为，您应该查看 Spring 文档:

http://docs.spring.io/spring/docs/3.0.x/spring-framework-reference/html/transaction.html#transaction-declarative-annotations

基本上，您需要定义一个 Spring 配置文件来定义数据源、事务管理和启用事务注释。还可以在这里找到教程:

http://techannotation.wordpress.com/2012/05/29/5-minutes-with-jpa-transaction/

3 - 没有关于程序未完成的线索..最后的日志显示它到达了主方法的末尾..

关于java - jpa + hibernate + 独立，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22165971/

30 4 0
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