無法解決休眠錯誤QuerySyntaxException：設計未映射[來自設計]

Question

我爲我的最終項目使用hibernate。我有一張名爲designs的表格，用於存儲藝術品的所有細節。在探索頁面中，我需要使用hibernate從數據庫中獲取所有設計。所以，我創建了一個名爲designModal.java的Java類，

public class designModal { 

SessionFactory sf; 

public designModal() { 
    sf = connection.NewHibernateUtil.getSessionFactory(); 

} 

public String[] getAllDesigns() { 
    String result[] = new String[8]; 
    try { 
     Session ses = sf.openSession(); 
     Transaction tr = ses.beginTransaction(); 
     List<Designs> designList = ses.createQuery("from designs").list(); 
     for (Designs designs : designList) { 
      result[0]= designs.getDesignId().toString(); 
      result[1]= designs.getTitle(); 
      result[2]= designs.getImage(); 
      result[3]= designs.getDescription(); 
      result[4]= designs.getPrice().toString(); 
      result[5]= designs.getViews().toString(); 
      result[6]= designs.getLikes().toString(); 
      result[7]= designs.getDesigners().toString(); 
     } 
     tr.commit(); 
     ses.flush(); 
     ses.close(); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    System.out.println(result[0]+""+result[1]+""+result[3]); 
    return result; 
} 

} 

然後，我在我的頁面調用此方法，

<%@page import="modal.designModal"%> 
<% 
    String result[] = new designModal().getAllDesigns(); 
    out.print(result.length); 
%> 

，但我得到一個例外：QuerySyntaxException: designs is not mapped [from designs]

我跟一些所謂的問題，但該沒有幫助。所以我創建了一個新的Web項目，但仍未解決。這裏有什麼問題？謝謝

Design.hbm.xml

<?xml version="1.0"?> 
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> 
<!-- Generated Oct 11, 2016 1:11:09 PM by Hibernate Tools 3.6.0 --> 
<hibernate-mapping> 
    <class name="pojos.Designs" table="designs" catalog="design"> 
     <id name="designId" type="java.lang.Integer"> 
      <column name="design_id" /> 
      <generator class="identity" /> 
     </id> 
     <many-to-one name="designers" class="pojos.Designers" fetch="select"> 
      <column name="designer_id" not-null="true" /> 
     </many-to-one> 
     <many-to-one name="galleries" class="pojos.Galleries" fetch="select"> 
      <column name="gallery_id" not-null="true" /> 
     </many-to-one> 
     <property name="title" type="string"> 
      <column name="title" length="45" /> 
     </property> 
     <property name="image" type="string"> 
      <column name="image" length="100" /> 
     </property> 
     <property name="description" type="string"> 
      <column name="description" length="500" /> 
     </property> 
     <property name="price" type="java.lang.Double"> 
      <column name="price" precision="22" scale="0" /> 
     </property> 
     <property name="views" type="java.lang.Integer"> 
      <column name="views" /> 
     </property> 
     <property name="likes" type="java.lang.Integer"> 
      <column name="likes" /> 
     </property> 
     <set name="buysRegisters" table="buys_register" inverse="true" lazy="true" fetch="select"> 
      <key> 
       <column name="design_id" not-null="true" /> 
      </key> 
      <one-to-many class="pojos.BuysRegister" /> 
     </set> 
    </class> 
</hibernate-mapping> 

Design.java

package pojos; 
// Generated Oct 11, 2016 1:11:09 PM by Hibernate Tools 3.6.0 


import java.util.HashSet; 
import java.util.Set; 

/** 
* Designs generated by hbm2java 
*/ 
public class Designs implements java.io.Serializable { 


    private Integer designId; 
    private Designers designers; 
    private Galleries galleries; 
    private String title; 
    private String image; 
    private String description; 
    private Double price; 
    private Integer views; 
    private Integer likes; 
    private Set buysRegisters = new HashSet(0); 

    public Designs() { 
    } 


    public Designs(Designers designers, Galleries galleries) { 
     this.designers = designers; 
     this.galleries = galleries; 
    } 
    public Designs(Designers designers, Galleries galleries, String title, String image, String description, Double price, Integer views, Integer likes, Set buysRegisters) { 
     this.designers = designers; 
     this.galleries = galleries; 
     this.title = title; 
     this.image = image; 
     this.description = description; 
     this.price = price; 
     this.views = views; 
     this.likes = likes; 
     this.buysRegisters = buysRegisters; 
    } 

    public Integer getDesignId() { 
     return this.designId; 
    } 

    public void setDesignId(Integer designId) { 
     this.designId = designId; 
    } 
    public Designers getDesigners() { 
     return this.designers; 
    } 

    public void setDesigners(Designers designers) { 
     this.designers = designers; 
    } 
    public Galleries getGalleries() { 
     return this.galleries; 
    } 

    public void setGalleries(Galleries galleries) { 
     this.galleries = galleries; 
    } 
    public String getTitle() { 
     return this.title; 
    } 

    public void setTitle(String title) { 
     this.title = title; 
    } 
    public String getImage() { 
     return this.image; 
    } 

    public void setImage(String image) { 
     this.image = image; 
    } 
    public String getDescription() { 
     return this.description; 
    } 

    public void setDescription(String description) { 
     this.description = description; 
    } 
    public Double getPrice() { 
     return this.price; 
    } 

    public void setPrice(Double price) { 
     this.price = price; 
    } 
    public Integer getViews() { 
     return this.views; 
    } 

    public void setViews(Integer views) { 
     this.views = views; 
    } 
    public Integer getLikes() { 
     return this.likes; 
    } 

    public void setLikes(Integer likes) { 
     this.likes = likes; 
    } 
    public Set getBuysRegisters() { 
     return this.buysRegisters; 
    } 

    public void setBuysRegisters(Set buysRegisters) { 
     this.buysRegisters = buysRegisters; 
    } 
} 

HibernateUtil.java

package connection; 


public class NewHibernateUtil { 

    private static final SessionFactory sessionFactory; 

    static { 
     try { 
      // Create the SessionFactory from standard (hibernate.cfg.xml) 
      // config file. 
      sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory(); 
     } catch (Throwable ex) { 
      // Log the exception. 
      System.err.println("Initial SessionFactory creation failed." + ex); 
      throw new ExceptionInInitializerError(ex); 
     } 
    } 

    public static SessionFactory getSessionFactory() { 
     return sessionFactory; 
    } 
} 

Answer 1

更改：

List<Designs> designList = ses.createQuery("from designs").list(); 

到：

List<Designs> designList = ses.createQuery("from Designs d").list();