Java 冬眠赢了'；即使在sql中显示，也不能创建表

Hibernate不会创建一个名为“Product”的特定表，即使它在sql中显示了CREATETABLE命令

类别表创建得很好

这些是课程

**BaseObject.java**

@MappedSuperclass
public class BaseObject implements Serializable 
{
public static final long serialVersionUID = 1L;

@Id
@GeneratedValue
private Long id;


public Long getId() {
    return id;
}

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

}

Category.java

@Entity
public class Category extends BaseObject {

private String name;

@OneToMany(fetch=FetchType.LAZY,mappedBy="category",orphanRemoval=true)
private List<Product> products;

@OneToOne(optional=true)
private Category parent;



public String getName() {
    return name;
}

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


public List<Product> getProducts() {
    return products;
}

public void setProducts(List<Product> products) {
    this.products = products;
}

public Category getParent() {
    return parent;
}

public void setParent(Category parent) {
    this.parent = parent;
}


}

@Entity
public class Product extends BaseObject{


@ManyToOne
private Category category;

private String jargonCode;

private int order;


private String dataTableJson;


public Category getCategory() {
    return category;
}

public void setCategory(Category category) {
    this.category = category;
}



public String getDataTableJson() {
    return dataTableJson;
}

public void setDataTableJson(String dataTableJson) {
    this.dataTableJson = dataTableJson;
}

public String getJargonCode() {
    return jargonCode;
}

public void setJargonCode(String jargonCode) {
    this.jargonCode = jargonCode;
}

public int getOrder() {
    return order;
}

public void setOrder(int order) {
    this.order = order;
}


}

春季形态

<jee:jndi-lookup id="dataSource" jndi-name="${jdni.dataSource}"
    expected-type="javax.sql.DataSource" />


<bean id="sessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="annotatedClasses">
        <list>
            <value>com.dataCollector.pojo.Category</value>
            <value>com.dataCollector.pojo.Product</value>
        </list>
    </property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">${hibernate.dialect}</prop>
            <prop key="hibernate.show_sql">${hibernate.showSql}</prop>
            <prop key="hibernate.hbm2ddl.auto">${hibernate.action}</prop>
        </props>
    </property>
</bean>

我真的不明白为什么。。我使用MySQL服务器。

---

我尝试将hibernate.hbm2ddl.auto设置为create和createdrop。但什么都没有。有人能帮我吗？

尝试更改“order”列名，这是一个保留字，形式上sql是正确的，因为我在调用列“user”而不是“userId”时遇到了类似的问题。

这可能是由于使用了不正确的方言造成的问题。能否指定MYSQL服务器使用的方言。org.hibernate.dialogue.mysqldialogue看起来不错。。但仍然要看看这是否有助于查看您在配置文件中指定的db用户的权限。对我来说，这不是Hibernate的问题，这是一些错误的相关连接或相关MYSQL。谢谢。但这是订单栏造成的..哈！你是对的。。我从没想过会是这样。。非常感谢。

    Hibernate: alter table Category drop foreign key FK_p6elut499cl32in8b8j8sy2n4
    Hibernate: alter table Product drop foreign key FK_b7afq93qsn7aoydaftixggf14
    Hibernate: drop table if exists Category
    Hibernate: drop table if exists Product
    Hibernate: create table Category (id bigint not null auto_increment, name varchar(255), parent_id bigint, primary key (id))
    Hibernate: create table Product (id bigint not null auto_increment, dataTableJson varchar(255), jargonCode varchar(255), order integer not null, category_id bigint, primary key (id))
    Hibernate: alter table Category add constraint FK_p6elut499cl32in8b8j8sy2n4 foreign key (parent_id) references Category (id)
    Hibernate: alter table Product add constraint FK_b7afq93qsn7aoydaftixggf14 foreign key (category_id) references Category (id)