Hibernate 配置1对多,插入等问题的demo

public class BlogUser implements java.io.Serializable {



	private static final long serialVersionUID = 8850445505288137285L;



	private Integer userId;



	private String userName;



	private String passWordOne;



	private Set<BlogFile> blogFile = new HashSet<BlogFile>();

//省略set & get ....

}

public class BlogFile implements java.io.Serializable {



	private static final long serialVersionUID = -1963389377781856294L;



	private Integer fileId;



	private String filePath;



	private String fileName;

	

	private BlogUser blogUser;    //private String createUserId;

//省略set & get ....

}

<hibernate-mapping>

    <class name="model.user.BlogUser" table="BLOG_User" schema="dbo" catalog="Blog"

    		dynamic-update="true"  optimistic-lock="version" >

        <id name="userId" type="java.lang.Integer">

            <column name="userId" />

            <generator class="native" />

        </id>

        <property name="userName" type="java.lang.String">

            <column name="userName" length="50"  />

        </property>

        <property name="passWordOne" type="java.lang.String">

            <column name="passWordOne" length="50"  />

        </property>

        <set name="blogFile" inverse="true" lazy="true" cascade="all-delete-orphan">

            <key>

                <column name="userId" />

            </key>

            <one-to-many class="model.user.BlogFile"/>

        </set>

    </class>

</hibernate-mapping>

<hibernate-mapping>

    <class name="model.user.BlogFile" table="Blog_File" schema="dbo" catalog="Blog">

        <id name="fileId" type="java.lang.Integer">

            <column name="fileId" />

            <generator class="native" />

        </id>

        <property name="filePath" type="java.lang.String">

            <column name="filePath" length="200" />

        </property>

        <property name="fileName" type="java.lang.String">

            <column name="fileName" length="200" />

        </property>

        <many-to-one name="blogUser"

			class="model.user.BlogUser">

			<column name="createUserId" /> <!--createUserId 是blogUser的主键userId -->

		</many-to-one>

    </class>

</hibernate-mapping>

public ActionForward insertUser(ActionMapping mapping, ActionForm form,

			HttpServletRequest request, HttpServletResponse response)

			throws Exception {

		BlogUser blogUser = new BlogUser();

		

		Set<BlogFile> file = new HashSet<BlogFile>();

		

		blogUser.setUserName("mousetsun");

		blogUser.setPassWordOne("111111");

		

		BlogFile blogFile = new BlogFile();

		blogFile.setFileName("aaa");

		blogFile.setFilePath("bbb");

		blogFile.setBlogUser(blogUser);

		file.add(blogFile);

		

		BlogFile blogFile1 = new BlogFile();

		blogFile1.setFileName("ccc");

		blogFile1.setFilePath("ddd");

		blogFile1.setBlogUser(blogUser);

		file.add(blogFile1);

		

		blogUser.setBlogFile(file);

		//spring...service 调用dao

		BlogUserService blogUserService = Locator

				.lookupService(BlogUserService.class);

		BlogUser user = blogUserService.insertUser(blogUser);

		//********

		System.out.println(user.getBlogFile().size());

		

		return mapping.findForward("index");

	}

//GenericDaoHibernateImpl 是我自己写的一些hibernate常用接口方法

public class BlogUserDaoImpl extends GenericDaoHibernateImpl<BlogUser, Integer> implements BlogUserDao{



	public BlogUser insertUser(BlogUser blogUser) {

		// TODO Auto-generated method stub

		this.getHibernateTemplate().clear();

		blogUser = (BlogUser) this.getHibernateTemplate()

				.merge(blogUser);

		this.getHibernateTemplate().flush();

		return blogUser;

	}

}