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不知道为什么不能建？？他们抛出这个异常：org.hibernate.hql.ast.QuerySyntaxException: product is not mapped [from product]

我的示例代码：

public Product[] searchProductByCatalog(String catalogid, String keyword) {
    String sql = "from product where 1";

        if (keyword.trim().equals("") == false) {
            sql += " and product_name like '%" + keyword + "%'";
        }
        if (catalogid.trim().equals("-1") == false) {
            sql += " and catalog_id = " + Integer.parseInt(catalogid);
        }
    try {

        session.getTransaction().begin();
        Query query = session.createQuery(sql);
        List listProduct = query.list();
        Product[] product = new Product[listProduct.size()];
        listProduct.toArray(product);
        session.flush();
        session.getTransaction().commit();
        return product;
    } catch (Exception e) {
        if (session.getTransaction().isActive()) {
            session.getTransaction().rollback();
        }
        e.printStackTrace();
    }
    return null;
}

这是我的映射：产品映射：

<class name="pojo.Product" table="product" catalog="shoesshopdb">
    <id name="idProduct" type="java.lang.Integer">
        <column name="id_product" />
        <generator class="assigned" />
    </id>
    <many-to-one name="catalog" class="pojo.Catalog" fetch="select" lazy="true">
        <column name="catalog_id" />
    </many-to-one>
    <property name="productName" type="string">
        <column name="product_name" length="45" />
    </property>
    <property name="date" type="date">
        <column name="date" length="10" />
    </property>
    <property name="author" type="string">
        <column name="author" length="45" />
    </property>
    <property name="price" type="java.lang.Integer">
        <column name="price" />
    </property>
    <property name="linkimage" type="string">
        <column name="linkimage" length="45" />
    </property>
</class>

目录映射：

<class name="pojo.Catalog" table="catalog" catalog="shoesshopdb">
    <id name="idCatalog" type="java.lang.Integer">
        <column name="ID_CATALOG" />
        <generator class="assigned" />
    </id>
    <property name="catalogName" type="string">
        <column name="Catalog_Name" length="45" />
    </property>
    <set name="products" inverse="true">
        <key>
            <column name="catalog_id" />
        </key>
        <one-to-many class="pojo.Product" />
    </set>
</class>
4

1 回答 1

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类名是Product，不是product。案件很重要。

于 2013-10-04T14:18:33.497 回答