上面是我的代碼

加了前綴屬性就無法運行，注釋掉就正常

我是跟著老師的視頻走的，其他代碼一致

求大神拯救

ps:加了前綴屬性后

最后給一個

ERROR: HHH000099: an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.hibernate.AssertionFailure: null id in pojo.Student entry (don't flush the Session after an exception occurs)

啥意思？

我手動設置id=1不行，id為null不行，不設置id也不行

不要前綴屬性就咋都行（設置id沒有用，自動增長的）

package?pojo;

import?java.util.Date;

public?class?Student?implements?java.io.Serializable?{

	//?Fields

	private?int?id;
	private?String?name;
	private?String?gender;
	private?Date?birthday;
	private?String?address;

	//?Constructors

	/**?default?constructor?*/
	public?Student()?{
	}

	/**?full?constructor?*/
	public?Student(String?name,?String?gender,?Date?birthday,?String?address)?{
		this.name?=?name;
		this.gender?=?gender;
		this.birthday?=?birthday;
		this.address?=?address;
	}

	//?Property?accessors

	public?Integer?getId()?{
		return?this.id;
	}

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

	public?String?getName()?{
		return?this.name;
	}

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

	public?String?getGender()?{
		return?this.gender;
	}

	public?void?setGender(String?gender)?{
		this.gender?=?gender;
	}

	public?Date?getBirthday()?{
		return?this.birthday;
	}

	public?void?setBirthday(Date?birthday)?{
		this.birthday?=?birthday;
	}

	public?String?getAddress()?{
		return?this.address;
	}

	public?void?setAddress(String?address)?{
		this.address?=?address;
	}

	/*?(non-Javadoc)
	?*?@see?java.lang.Object#toString()
	?*/
	@Override
	public?String?toString()?{
		return?"Student?[id="?+?id?+?",?name="?+?name?+?",?gender="?+?gender
				+?",?birthday="?+?birthday?+?",?address="?+?address?+?"]";
	}
	
	
}

上面是類
下面是映射

<?xml?version="1.0"?encoding="utf-8"?>
<!DOCTYPE?hibernate-mapping?PUBLIC?"-//Hibernate/Hibernate?Mapping?DTD?3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!--?
????Mapping?file?autogenerated?by?MyEclipse?Persistence?Tools
-->
<hibernate-mapping>
????<class?name="pojo.Student"?table="student"?catalog="xiele007">
????????<id?name="id"?type="java.lang.Integer">
????????????<column?name="id"?/>
????????????<generator?class="native"?/>
????????</id>
????????<property?name="name"?type="java.lang.String">
????????????<column?name="name"?length="16"?/>
????????</property>
????????<property?name="gender"?type="java.lang.String">
????????????<column?name="gender"?length="32"?/>
????????</property>
????????<property?name="birthday"?type="java.util.Date">
????????????<column?name="birthday"?length="10"?/>
????????</property>
????????<property?name="address"?type="java.lang.String">
????????????<column?name="address"?/>
????????</property>
????</class>
</hibernate-mapping>