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我一天的真氣問題是這樣的：org.hibernate.hql.ast.QuerySyntaxException：該產品不會映射[從產品]
我嘗試使用Hibernate來訪問數據庫。經過一系列錯誤的開始，我放棄了我的特定項目，並選擇使用Netbeans 6.9附帶的示例數據庫和嚮導。
我解僱了NetBeans中，開始樣品Derby數據庫，並遵循本教程中的說明：http://netbeans.org/kb/docs/java/hibernate-java-se.html，跳過關於MySQL數據庫和信息代位爲德比sample數據庫在適當情況下。
我的所有Google使用告訴我，我正在犯一個菜鳥的錯誤，指的是表名而不是類名。我確信自己並非如此[1]。只有很多方法可以參考一堂課。除此之外，我很困惑。除了嚮導之外，我只使用過示例數據庫，除此之外我什麼都找不到。
我右鍵點擊hibernate.cfg.xml，選擇Run HQL Query（就像在教程中），並獲得當我運行查詢from Product
請幫我我的肝給了之前在上面的問題的標題除外。
[1]這是你們其中一個會證明我錯了的地方。
的hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.DerbyDialect</property>
<property name="hibernate.connection.driver_class">org.apache.derby.jdbc.ClientDriver</property>
<property name="hibernate.connection.url">jdbc:derby://localhost:1527/sample</property>
<property name="hibernate.connection.username">app</property>
<property name="hibernate.connection.password">app</property>
<property name="hibernate.show_sql">true</property>
<mapping resource="sample/db/PurchaseOrder.hbm.xml"/>
<mapping resource="sample/db/Customer.hbm.xml"/>
<mapping resource="sample/db/MicroMarket.hbm.xml"/>
<mapping resource="sample/db/ProductCode.hbm.xml"/>
<mapping resource="sample/db/Product.hbm.xml"/>
<mapping resource="sample/db/Manufacturer.hbm.xml"/>
<mapping resource="sample/db/DiscountCode.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Product.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Aug 30, 2010 3:57:50 PM by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
<class name="sample.db.Product" schema="APP" table="PRODUCT">
<id name="productId" type="int">
<column name="PRODUCT_ID"/>
<generator class="assigned"/>
</id>
<property name="manufacturerId" type="int">
<column name="MANUFACTURER_ID" not-null="true"/>
</property>
<property name="productCode" type="string">
<column length="2" name="PRODUCT_CODE" not-null="true"/>
</property>
<property name="purchaseCost" type="big_decimal">
<column name="PURCHASE_COST" precision="12"/>
</property>
<property name="quantityOnHand" type="java.lang.Integer">
<column name="QUANTITY_ON_HAND"/>
</property>
<property name="markup" type="big_decimal">
<column name="MARKUP" precision="4"/>
</property>
<property name="available" type="string">
<column length="5" name="AVAILABLE"/>
</property>
<property name="description" type="string">
<column length="50" name="DESCRIPTION"/>
</property>
</class>
</hibernate-mapping>
Product.java
package sample.db;
// Generated Aug 30, 2010 3:57:50 PM by Hibernate Tools 3.2.1.GA
import java.math.BigDecimal;
/**
* Product generated by hbm2java
*/
public class Product implements java.io.Serializable {
private int productId;
private int manufacturerId;
private String productCode;
private BigDecimal purchaseCost;
private Integer quantityOnHand;
private BigDecimal markup;
private String available;
private String description;
public Product() {
}
public Product(int productId, int manufacturerId, String productCode) {
this.productId = productId;
this.manufacturerId = manufacturerId;
this.productCode = productCode;
}
public Product(int productId, int manufacturerId, String productCode, BigDecimal purchaseCost, Integer quantityOnHand, BigDecimal markup, String available, String description) {
this.productId = productId;
this.manufacturerId = manufacturerId;
this.productCode = productCode;
this.purchaseCost = purchaseCost;
this.quantityOnHand = quantityOnHand;
this.markup = markup;
this.available = available;
this.description = description;
}
public int getProductId() {
return this.productId;
}
public void setProductId(int productId) {
this.productId = productId;
}
public int getManufacturerId() {
return this.manufacturerId;
}
public void setManufacturerId(int manufacturerId) {
this.manufacturerId = manufacturerId;
}
public String getProductCode() {
return this.productCode;
}
public void setProductCode(String productCode) {
this.productCode = productCode;
}
public BigDecimal getPurchaseCost() {
return this.purchaseCost;
}
public void setPurchaseCost(BigDecimal purchaseCost) {
this.purchaseCost = purchaseCost;
}
public Integer getQuantityOnHand() {
return this.quantityOnHand;
}
public void setQuantityOnHand(Integer quantityOnHand) {
this.quantityOnHand = quantityOnHand;
}
public BigDecimal getMarkup() {
return this.markup;
}
public void setMarkup(BigDecimal markup) {
this.markup = markup;
}
public String getAvailable() {
return this.available;
}
public void setAvailable(String available) {
this.available = available;
}
public String getDescription() {
return this.description;
}
public void setDescription(String description) {
this.description = description;
}
}
我不會相信奇才。嘗試運行該應用程序（再次），並分享您得到的異常。 – Bozho 2010-08-30 23:37:54
您使用Hibernate映射文件使用JPA批註的任何特定原因？幾年來，NetBeans嚮導爲我提供了良好的JPA映射。 – 2010-08-30 23:52:58
'SessionFactory'創建時可能存在錯誤，導致Product無法正確映射。以編程方式創建它並查看出現的錯誤（併發布跟蹤。 – 2010-08-31 01:20:41