//User.java
在企业中model类的属性可能有几百个而且还可能继承了很多属性，这样的model如果手写映射文件岂不是很大的工程！
这里介绍Ant+XDoclet配合来自动生成映射文件。
必备：Ant和XDocle的jar包。
操作很简单，自己写一个model类例如People.java,但是要自动生成映射文件这个类需要有注释，写一个build.xml文件，
下载Xdoclet，网址：http://xdoclet.sourceforge.net/
新建包com.test.model，存放实体类Group，User
package dbdemo;import java.util.Date;import java.util.Set;/** * @hibernate.class table="Users" * * @author Ethan * * Represents a User */public class User { private String userID; private String userName; private String password; private String emailAddress; private Date lastLogon; private Set contacts; private Set books; private Address address; /** * @hibernate.property column="EmailAddress" type="string" * @return String */ public String getEmailAddress() { return emailAddress; } /** * @hibernate.property column="LastLogon" type="date" * @return Date */ public Date getLastLogon() { return lastLogon; } /** * @hibernate.property column="Password" type="string" * @return String */ public String getPassword() { return password; } /** * @hibernate.id generator-class="assigned" type="string" * column="LogonID" * @return String */ public String getUserID() { return userID; } /** * @hibernate.property column="Name" type="string" * @return String */ public String getUserName() { return userName; } /** * @param string */ public void setEmailAddress(String string) { emailAddress = string; } /** * @param string */ public void setLastLogon(Date date) { lastLogon = date; } /** * @param string */ public void setPassword(String string) { password = string; } /** * @param string */ public void setUserID(String string) { userID = string; } /** * @param string */ public void setUserName(String string) { userName = string; } /** * @hibernate.set role="contacts" table="Contacts" * cascade="all" readonly="true" * @hibernate.collection-key column="User_ID" * @hibernate.collection-one-to-many class="dbdemo.Contact" * @return java.util.Set */ public Set getContacts() { return contacts; } /** * @param set */ public void setContacts(Set set) { contacts = set; } /** * @hibernate.set role="books" table="Book_User_Link" * cascade="all" eadonly="true" * @hibernate.collection-key column="UserID" * @hibernate.collection-many-to-many * class="dbdemo.Book" column="BookID" * @return java.util.Set */ public Set getBooks() { return books; } /** * @param set */ public void setBooks(Set set) { books = set; } /** * @hibernate.one-to-one class="dbdemo.Address" * @return dbdemo.Address */ public Address getAddress() { return address; } /** * @param address */ public void setAddress(Address address) { this.address = address; }}
//在test目录下建立build.xml，其中为你所解压的xdoclet目录。 Ant build File build.xml
执行过程:Windows–>ShowView–>Other–>Ant文件里面(Ant)–>在Ant空白处右键 –>Add Buildfiles–>选择你要生成配置文件的bulild.xml文件点击OK,让后分别执行,所要生成的文件即可.赶快试试吧…
