@Test

public void testSaveStudents(){

//生成学生对象

Students s1 = new Students();//注意顺序

s1.setSname("试试");

s1.setGender("女");

s1.setBirthday(new Date());

Address  address = new Address("6130","63302","大第县");

s1.setAddress(address);

session.save(s1);

}

因为最初运行时显示：could not parse mapping document from resource Students.hbm.xml.然后下面显示是由于：class Address not found while looking for property:postcode.   在网上找了解决方法，就在后面加了类型。但是依然会报错：

 Unable to instantiate default tuplize org.hibernate.tuple.entity.PojoEntityTuplizer]. 

   <component name="address" class="Address" >

        <property name="postcode" column="POSTCODE" type="java.lang.String"/>

        <property name="phone" column="PHONE"  type="java.lang.String"/>

        <property name="address" column="ADDRESS"  type="java.lang.String"/>

        </component>