久久久久亚洲国产AV麻豆,亚洲国产精品久久久久婷婷老年,国产精品亚洲а∨无码播放http://www.tkk7.com/fine/category/11897.htmlzh-cnWed, 13 Jun 2007 23:26:48 GMTWed, 13 Jun 2007 23:26:48 GMT60Spring Mvchttp://www.tkk7.com/fine/archive/2007/06/12/123579.htmlPeter PanPeter PanTue, 12 Jun 2007 05:05:00 GMThttp://www.tkk7.com/fine/archive/2007/06/12/123579.htmlhttp://www.tkk7.com/fine/comments/123579.htmlhttp://www.tkk7.com/fine/archive/2007/06/12/123579.html#Feedback0http://www.tkk7.com/fine/comments/commentRss/123579.htmlhttp://www.tkk7.com/fine/services/trackbacks/123579.htmlDispatcherServlet)、處理器映射(handler mapping)、視圖解析器(view resolver)等等
控制器(Controller)?實現的是MVC中C 那個組成部分。
處理器映射(Handler mapping)包含預處理器(pre-processor),后處理器(post-processor)和控制器的列表,它們在符合某種條件時才被執行(例如符合控制器指定的URL)。
視圖解析器(View resolvers)可以將視圖名解析為對應的視圖。
本地化解析器(Locale resolver)能夠解析用戶正在使用的本地化設置,以提供國際化視圖。
主題解析器(Theme resolver)能夠解析你的web應用所使用的主題,以提供個性化的布局。
上傳文件解析器(multipart file resolver)提供HTML表單文件上傳功能。
處理器異常解析器(Handler exception resolver(s))可以將異常對應到視圖,或者實現更加復雜的異常處理代碼。


Peter Pan 2007-06-12 13:05 發表評論
]]>
Jpa (EJB3 Entity Bean) 好東西就順便拿來了http://www.tkk7.com/fine/archive/2007/04/05/108679.htmlPeter PanPeter PanThu, 05 Apr 2007 05:30:00 GMThttp://www.tkk7.com/fine/archive/2007/04/05/108679.htmlhttp://www.tkk7.com/fine/comments/108679.htmlhttp://www.tkk7.com/fine/archive/2007/04/05/108679.html#Feedback0http://www.tkk7.com/fine/comments/commentRss/108679.htmlhttp://www.tkk7.com/fine/services/trackbacks/108679.htmlJava EE5到底有什么系列 – Java Persistence API 1.0( EJB3 Entity Bean)
作者:黃海波(Charles Huang)

Java EE5作為新一代Java企業開發平臺的規范,從開始設計就引來了整個java開發社區的注目,引起無數的辯論和帶來了眾多的期盼。Java EE5作為J2EE平臺誕生幾近6年后的第4代規范重點關注的是目前java開發的幾個熱點:開發效率,運行效率和企業應用整合。目標也是讓J2EE開發簡單,簡單再簡單。那我們就看看J2EE5規范到底有什么,是否真的能給開發者/企業帶來真正的實惠?

Java EE5規范是一個所謂的雨傘規范(Umbrella),在其下是一系列的子規范,主要包括:

EJB 3.0 (JSR 220)
Java Persistence API 1.0 (JSR 220)
JSP 2.1 (JSR 245)
JSF 1.2 (JSR 252)
JAX-WS 2.0 (JSR 224)
StAX 1.0 (JSR 173)
JAXB 2.0 (JSR 222)
Web Services Annotations 1.0 (JSR 181)
Common Annotations 1.0 (JSR 250)
SAAJ 1.3 maintenance
JTA 1.1 maintenance
JavaMail 1.4 & JAF 1.1 maintenance
JSTL 1.2 maintenance
Java EE Mgmt maintenance
JACC maintenance
Servlet maintenance
Java EE Deployment maintenance
WSEE maintenance


Java Persistence API 1.0( EJB3 Entity Bean) 在Java EE5中, Entity Bean做為EJB規范中負責持久化的組件將逐漸成為一個歷史名詞了,作為J2EE 4規范中最為人所垢病的Entity Bean在Java EE5中被推到重來,取而代之的是java開發的通用持久化規范Java Persistence API 1.0, 其實就是完全重新定義了的Entity Bean規范(目前在很多場合中,由于歷史原因我們仍然使用ejb3持久化來稱呼這個規范)。JPA作為java中負責關系數據持久化的組件已經完全獨立出來成為一個單獨的規范,而不再屬于Enterprise Java Bean的范疇(EJB更多的是指Stateless/Stateful session bean和Message Driven Bean)。

Java Persistence AP(JPA)可以說是java持久化技術的一個集大成者,它吸取了Hiberante,JDO,TopLink等優秀技術和框架,將這幾年發展成熟起來的基于POJO模型的O/R Mapping技術標準化,成為在J2EE和J2SE環境中通用的java持久化API。值得注意的是Java Persistence API并不是J2EE環境專用,而是在java中的通用API。意味著我們可以在任何需要訪問關系數據庫的地方使用JPA,甚至包括swing開發的桌面應用。JPA也不要求一定在J2EE容器中才能運行,而是任何有JVM的環境都可以運用。 這就使得我們可以很容易的把JPA作為一個持久化組件自由的和各種容器/框架(EJB3容器, Spring等等)組合。

JPA如何簡化原來EJB2中Entity Bean的開發,看一個簡單對比:
EJB2.0EJB3.0(JPA)
Business Interface
public inerface HelloWold extends EJBLocalObject{
    Public String getResult();
}
						
無需定義接口
映射配置文件編寫EJB3 Deployment descriptor可選
EJB實現
public class HelloWorldEntityBean 
         implements HelloWold, EntityBean{
    private int id;
    private String result;
    private EntityContext txt;
   
    public HelloWorldEntityBean(){}
    public void setEntityContext( EntityContext text ){ 
        txt = text;
    }
   
    public String getResult(){ 
        Return result; 
    }
        
    public int getId(){
        return id; 
    }
    
    public void setResult( String result ){ 
        this.result = result;
    }
    
    public String cretaeByName( String name ) throws EJBException{
        .....
    }
   
 }						
						
@Entity
@Table(name=”hellotable”)
public class HelloWoldEntity{   
    @Id
    private int id; p
    private String result; 
    
    public HelloWoldEntity(){} 
    
    public String getResult(){ 
        return result;
    }
    
    public int getId(){
        return id;
    }  
    
    public void setResult( String result ){ 
        this.result = result;
    }
}						
						

在JPA 中,ejb3的Entity Bean就是一個簡單的java bean,即POJO( Plain Old Java Object)。不象EJB2中的EntityBean需要跟容器有密切的關聯(EJB2中必須有EntityContext),EJB3 中的entityBean和容器無關,事實上在JPA中,EntityBean也不再稱為EntityBean,而是Entity,和Session Bean/Message Driven Bean的仍然存在的EJB區別開來。

為了簡化O/R Mapping的配置,JPA大量采用JDK1.5的最重要的新特性annotaion直接在java代碼中進行配置的標注。 采用annotation標注O/R Mapping配置可以大幅度減少以往使用xml配置O/R Mapping工作量,提高效率和可維護性。

下面是一個最簡單的一對一關聯關系采用annotation和xml的配置比較。
Java Persistence API(EJB3 Persistence)Hiberante
配置文件可選需要
One-To-One配置可選
<one-to-one        
    name="address"        
    class="com.foo.Address"        
    cascade="All"        
    lazy="false"/>
Java代碼
public class Order{     
	@OneToOne(cascade=CascadeType.ALL,fetch=FetchType.LAZYL)    
	Address address;
    ......	
}
						
public class Order{    
    Address address;
    ......   
}
采用annotation的優勢在于:
  • 減少了配置文件的數量,特別是在實體(Entity)比較多的系統中,維護大量的O/R Mapping xml配置文件是不少的工作量。
  • 減少了配置需要標注的內容。由于annotation由java compiler來編譯解析,很多需要在xml配置中顯式聲明的內容不再需要(比如變量名稱,類型,集合中的對象類型等)。
  • Annotation的編譯期檢查可以避免xml文件中容易出現的配置語法錯誤,在IDE中及時發現和糾正。
  • 無需在xml配置文件和java代碼中切換,較少思維的跳躍,提高了開發效率。
  • annotation被編譯到java bytecode中,省略了xml的解析過程,極大的提升應用的啟動速度和內存占用(特別是Entity多的情況)。
JPA在啟動上做了很多程度的簡化,使我們能夠很容易地在容器內(container)和J2SE環境中使用JPA。JPA擁有一個最基本的工廠類EntityManagerFactory。通過調用這個工廠類的createEntityManager()方法獲得EntityManager。所有對實體(Entity)的操作包括持久化,查詢,刪除等等操作都都定義EntityManager上。
public interface EntityManager {
    public void persist(Object entity);
    public  T merge(T entity);
    public void remove(Object entity);
    public  T find(Class entityClass, Object primaryKey);
    public  T getReference(Class entityClass, Object primaryKey);
    public void flush();
    public void setFlushMode(FlushModeType flushMode);
    public FlushModeType getFlushMode();
    public void lock(Object entity, LockModeType lockMode);
    public void refresh(Object entity);
    public void clear();
    public boolean contains(Object entity);
    public Query createQuery(String ejbqlString);
    public Query createNamedQuery(String name);
    public Query createNativeQuery(String sqlString);
    public Query createNativeQuery(String sqlString, Class result-
    Class);
    public Query createNativeQuery(String sqlString, String result-
    SetMapping);
    public void close();
    public boolean isOpen();
    public EntityTransaction getTransaction();
}
				
				

那又如何獲得EntityManagerFactory呢?不管是在J2EE或者J2SE中,都需要通過一個persistence.xml配置文件對EntityMangaerFactory進行配置。下面是一個最簡單的persistence.xml的范例。
<entity-manager>
    <name>myEntityManager>/name>
    <provider>com.redsoft.ejb3.PersistenceProviderImpl>/provider>
    <class>com.redsoft.samples.HelloEntityBean>/class>
    <properties>
        <property name="ConnectionDriverName" value="com.mysql.jdbc.Driver"/>
        <property name="ConnectionURL" value="jdbc:mysql://localhost/EJB3Test"/>
        <property name="ConnectionUserName" value="ejb3"/>
        <property name="ConnectionPassword" value="ejb3"/>
   >/properties>
</entity-manager>

}
				
				

name – 定了當前這個EntityMangaerFactory的名字,我們可以在一個persistence.xml中定義多個EntityManagerFactory。

Provider – 定了提供EntityManagerFactory的具體實現類。這個實現類由不同的持久化產品開發商提供。例子中采用的是國產紅工場的ejb3持久化實現的 EntityManagerFactory實現類。如如果我們需要更換成其他廠商的產品,就需要更換具體的實現類。

class – 列出所有需要被JPA管理的實體類。為了保證在J2SE/J2EE中的通用性和可移植性,JPA要求這里必須列出所有被JPA管理的實體類。

properties – 由持久化廠商自行定義的屬性。

如果使用JTA事務,也可以使用 myDataSource定義。

在J2EE容器環境中和J2SE環境中,都是通過讀取這個配置文件來初始化EntityMangaerFactory。在J2EE容器環境下,ejb3容器負責讀取persistence.xml并初始化EntityManagerFactory,并將EntityManagerFactory幫定到JDNI中,這樣我們就可以通過訪問JNDI獲得EntityManagerFactory, 進而獲得EntityManager。由于EJB3容器支持IOC模式,我們也可以通過IOC將EntityMangerFactory直接注射給需要的使用JPA持久化的java類。通過IOC注射的方式獲得EntityManagerFactory或者EntityManager是更方便,合理和推薦的方式。

而在J2SE環境中,我們可以通過標準的javax.persistence.Persistence類來獲得EntityManagerFactory。Javax.persistence.Persistence會在當前classpath或者jar包的META-INF/下搜索并讀persistence.xml后初始化EntityManagerFactory。

下面是一個簡單的示例如何在J2SE環境中獲得EntityManagerFactory并獲得EntityManager,運用EntityManager持久化HelloWorldEntityBean.
public class HelloWorld {

    public static void main( final String[] args ){

        /*
         * Obtain an EJB3 entity manager
         */
        final EntityManagerFactory emf = Persistence.createEntityManagerFactory();
        final EntityManager entityManager = emf.createEntityManager();

        // Construct a HelloEntityBean
        final HelloEntityBean hello = new HelloEntityBean( 1, "foo" );
        EntityTransaction trans = entityManager.getTransaction();
        trans.begin();
        entityManager.persist( hello );
        trans.commit();
        System.out.println( "Successfully persist hello: " + hello );

        // Look up the HelloEntityBean by primarky key
        final HelloEntityBean anotherHello = entityManager.find( HelloEntityBean.class, new Integer( hello.getId() ) );
        System.out.println( "Found hello: " + anotherHello );

        // close the EntityManager
        entityManager.close();
        emf.close();
    }
}
				
事實上不管是在J2SE還是J2EE中我們都可以這樣通過javax.persistence.Persistence來初始化EntityManagerFactory。

在上面HelloWorld的例子中我們需要顯式調用javax.persistence.Persistence.createEntityManagerFactory, 并且顯式地開始事務和關閉事務。在今天大量使用IOC托管容器的時代,這樣的編碼已經顯得落后。

作為J2EE一個部分的JPA自然可以利用EJB3的IOC容器托管事務和注射資源,同樣的也可以使用開源IOC容器spring來托管事務和注射資源。紅工場也提供了一個開源的spring DAO擴展 http://sourceforge.net/projects/ejb3daosupport 是來支持JPA和Spring的結合。

下面是一個如何在Spring中托管事務和在DAO中注入EntityManager的配置范例:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "file://spring-beans.dtd">

<beans>
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
		<property name="driverClassName"><value>com.mysql.jdbc.Driver</value></property>
		<property name="url"><value>jdbc:mysql://localhost/EJB3Test</value></property>
		<property name="username"><value>ejb3</value></property>
		<property name="password"><value>ejb3</value></property>
	</bean>
	<bean id="entityManagerFactory"
		class="org.springframework.orm.ejb3.LocalEntityManagerFactoryBean">
		<property name="persistenceInfo"><ref local="persistenceInfo"/></property>
		
	</bean>
	<bean id="persistenceInfo" class="com.redsoft.ejb3.PersistenceInfoImpl">
		<property name="nonJtaDataSource"><ref local="dataSource"/></property>
		<property name="entityManagerName"><value>myEntityManager</value></property>
		<property name="persistenceProviderClassName">
			<value>
				com.redsoft.ejb3.PersistenceProviderImpl
			</value>
		</property>
		<property name="entityClassNames">
		<list>
			<value>com.redsoft.ejb3.spring.Child</value>
			<value>com.redsoft.ejb3.spring.Father</value>
		</list>
		</property>
		<property name="properties">
			<props>
			<prop key="javax.jdo.PersistenceManagerFactoryClass">
				com.redsoft.jdo.PersistenceManagerFactoryImpl
			</prop>
			</props>
		</property>
	</bean>
	<bean id="transactionManager" class="org.springframework.orm.ejb3.EJB3TransactionManager"
		singleton="true">
		<property name="entityManagerFactory">
			<ref local="entityManagerFactory" />
		</property>
	</bean>
	
	<bean id="dao"
		class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
		singleton="true">
		<property name="transactionManager">
			<ref local="transactionManager" />
		</property>
		<property name="target">
			<bean class="com.redsoft.ejb3.spring.DAOImpl">
				<property name="entityManagerFactory">
					<ref local="entityManagerFactory" />
				</property>
			</bean>
		</property>
		<property name="transactionAttributes">
			<props>
				<prop key="save*">PROPAGATION_REQUIRED</prop>
				<prop key="remove*">PROPAGATION_REQUIRED</prop>
				<prop key="del*">PROPAGATION_REQUIRED</prop>
				<prop key="update*">PROPAGATION_REQUIRED</prop>
				<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
				<prop key="query*">PROPAGATION_REQUIRED,readOnly</prop>
			</props>
		</property>
	</bean>
</beans>

				
文中的例子可以從紅工場主頁下載 http://www.redsoftfactory.com/chinese/index.html


Peter Pan 2007-04-05 13:30 發表評論
]]>
No form found under '****Form' in locale 'zh_CN'http://www.tkk7.com/fine/archive/2007/01/19/94952.htmlPeter PanPeter PanFri, 19 Jan 2007 08:22:00 GMThttp://www.tkk7.com/fine/archive/2007/01/19/94952.htmlhttp://www.tkk7.com/fine/comments/94952.htmlhttp://www.tkk7.com/fine/archive/2007/01/19/94952.html#Feedback0http://www.tkk7.com/fine/comments/commentRss/94952.htmlhttp://www.tkk7.com/fine/services/trackbacks/94952.htmlat org.apache.struts.taglib.html.JavascriptValidatorTag.renderJavascript(JavascriptValidatorTag.java:384)
at org.apache.struts.taglib.html.JavascriptValidatorTag.doStartTag(JavascriptValidatorTag.java:349)

<html:javascript formName="employeeForm" cdata="false" dynamicJavascript="true" staticJavascript="false"/>
在validation.xml中缺少了相應的配置
<form name="employeeForm">
????????? <field property="name" depends="required">
????????? ?<arg0 key="employeeForm.name"/>
????????? </field>
?</form>

Peter Pan 2007-01-19 16:22 發表評論
]]>
strutsmenu使用http://www.tkk7.com/fine/archive/2006/10/24/77021.htmlPeter PanPeter PanTue, 24 Oct 2006 08:56:00 GMThttp://www.tkk7.com/fine/archive/2006/10/24/77021.htmlhttp://www.tkk7.com/fine/comments/77021.htmlhttp://www.tkk7.com/fine/archive/2006/10/24/77021.html#Feedback0http://www.tkk7.com/fine/comments/commentRss/77021.htmlhttp://www.tkk7.com/fine/services/trackbacks/77021.html?public ActionForward execute(
???ActionMapping mapping,
???ActionForm form,
???HttpServletRequest request,
???HttpServletResponse response) {
???//創建連接
???Session session=SessionFactory.currentSession();
???//創建事務
???Transaction tx=session.beginTransaction();
???//創建對話
???Query query=session.createQuery("FROM Department");
???List list=query.list();
???//事務提交
???tx.commit();
???if(list.size()<0)
????return mapping.getInputForward();
???MenuRepository repository = new MenuRepository();
???HttpSession httpsession=(HttpSession)request.getSession();
???ServletContext application=(ServletContext)httpsession.getServletContext();
???MenuRepository defaultRepository = (MenuRepository)application.getAttribute(MenuRepository.MENU_REPOSITORY_KEY);
???repository.setDisplayers(defaultRepository.getDisplayers());
? ??for (int i=0; i < list.size(); i++) {
? ???MenuComponent mc = new MenuComponent();
? ???
? ???Department mi=(Department) list.get(i);
? ???
? ???String name = "a" + mi.getDepartmentCode();
???????????? mc.setName(name);
???????????? String parent = "a" + mi.getParentCode();
???????????? System.out.println(name + ", parent is: " + parent);
???????????? if(parent.equals("a0")){
???????????? ?parent = null;
???????????? }
???????????? if (parent != null) {
???????????????? MenuComponent parentMenu = repository.getMenu(parent);
???????????????? if (parentMenu == null) {
???????????????????? System.out.println("parentMenu '" + parent + "' doesn't exist!");
???????????????????? // create a temporary parentMenu
???????????????????? parentMenu = new MenuComponent();
???????????????????? parentMenu.setName(parent);
???????????????????? repository.addMenu(parentMenu);
???????????????? }
???????????????? mc.setParent(parentMenu);
???????????? }
???????????? String title = mi.getDepartmentName();
???????????? mc.setTitle(title);
????????????
??????????
???????????? mc.setLocation("index.jsp");
???????????? repository.addMenu(mc);
???}
? ??request.setAttribute("repository", repository);
???return mapping.findForward("okGo");
??}
jsp中
<%@ page contentType="text/html;charset=UTF-8" language="java"%>
<%@ taglib uri="/WEB-INF/struts-menu.tld" prefix="menu" %>
<%@ taglib uri="/WEB-INF/struts-menu-el.tld" prefix="menu-el" %>
<%@ taglib uri="/WEB-INF/c.tld" prefix="c" %>

??? <link rel="stylesheet" type="text/css" media="all"
??????? href="<c:url value="/styles/menuExpandable.css"/>" />
?? ?
?? ? <script type="text/javascript"
??????? src="<c:url value="/scripts/menuExpandable.js"/>"></script>
??? <link rel="stylesheet" type="text/css" media="all"
??????? href="<c:url value="/styles/xtree.css"/>" />
??? <script type="text/javascript"
??????? src="<c:url value="/scripts/xtree.js"/>"></script>
???????
??? <link rel="stylesheet" type="text/css" media="screen"
??????? href="<c:url value="/styles/global.css"/>" />
???????
???????
??? <script type="text/javascript">
??????? /* Function for showing and hiding elements that use 'display:none' to hide */
??????? function toggleDisplay(targetId) {
??????????? if (document.getElementById) {
??????????????? target = document.getElementById(targetId);
??????????????? if (target.style.display == "none"){
??????????????????? target.style.display = "";
??????????????? } else {
??????????????????? target.style.display = "none";
??????????????? }
??????????? }
??????? }
??? </script>
?? <!--
??? <div class="dynamicMenu tree">
??????? <menu:useMenuDisplayer name="ListMenu" repository="repository">
??????????? <menu:displayMenu name="a01"/>
??????????? <menu:displayMenu name="a02"/>
??????? </menu:useMenuDisplayer>
??? </div>
???
??? <div class="dynamicMenu tree">
??? <script type="text/javascript">
??????? <menu:useMenuDisplayer name="Velocity" config="/templates/xtree.html"
??????????? repository="repository">
????????? <c:forEach var="menu" items="${repository.topMenus}">
??????????? <menu-el:displayMenu name="${menu.name}"/>
????????? </c:forEach>
??????? </menu:useMenuDisplayer>
??? </script>
??? </div>
??? -->
?<div id="content">
?<script type="text/javascript" src="<c:url value="/scripts/coolmenus3.js"/>"></script>
?<script type="text/javascript" src="<c:url value="/scripts/coolmenu-config.js"/>"></script>
??????? <menu:useMenuDisplayer name="CoolMenu"? repository="repository">
??????????? <menu:displayMenu name="a01"/>
??????????? <menu:displayMenu name="a02"/>
??????? </menu:useMenuDisplayer>
??? </div>
menu-config.xml
<?xml version="1.0" encoding="UTF-8" ?>

<MenuConfig>

? <Displayers>
??? <Displayer?? name="DropDown"
???????????????? type="net.sf.navigator.displayer.DropDownMenuDisplayer"/>
??? <Displayer?? name="Simple"
???????????????? type="net.sf.navigator.displayer.SimpleMenuDisplayer"/>
??? <Displayer?? name="CoolMenu"
???????????????? type="net.sf.navigator.displayer.CoolMenuDisplayer"/>
??? <Displayer?? name="CoolMenu4"
???????????????? type="net.sf.navigator.displayer.CoolMenuDisplayer4"/>
??? <Displayer?? name="MenuForm"
???????????????? type="net.sf.navigator.example.PermissionsFormMenuDisplayer"/>
??? <Displayer?? name="ListMenu"
???????????????? type="net.sf.navigator.displayer.ListMenuDisplayer"/>
??? <Displayer?? name="TabbedMenu"
???????????????? type="net.sf.navigator.displayer.TabbedMenuDisplayer"/>
??? <Displayer?? name="Velocity"
???????????????? type="net.sf.navigator.displayer.VelocityMenuDisplayer"/>
? </Displayers>

? <Menus>
?
? </Menus>

</MenuConfig>



Peter Pan 2006-10-24 16:56 發表評論
]]>
xdoclet1.2.3&xdoclet2http://www.tkk7.com/fine/archive/2006/09/27/72349.htmlPeter PanPeter PanWed, 27 Sep 2006 09:30:00 GMThttp://www.tkk7.com/fine/archive/2006/09/27/72349.htmlhttp://www.tkk7.com/fine/comments/72349.htmlhttp://www.tkk7.com/fine/archive/2006/09/27/72349.html#Feedback0http://www.tkk7.com/fine/comments/commentRss/72349.htmlhttp://www.tkk7.com/fine/services/trackbacks/72349.html用xdoclet 和xdoclet2來產生hiberante map文件的一些區別
xdoclet升級到1.2.3了,文檔上說是支持hibernate 3了,實際上,經過今天的檢驗,發現xdoclet 1.2.3只是支持hibernate 3的map文件了,而生成的hibernate 3的config文件,卻還hibernate 2的。
?
一個簡單的例子(就是這個例子:ttp://www.redsaga.com/hibernate-ref/3.1.2/zh-cn/html/tutorial.html#tutorial-firstapp-firstclass,按它上面的介紹,設置好各個目錄結構):
package events;
import java.util.Date;
/**
?*
?* @hibernate.class table="EVENTS"
?*/
public class Event {

??? private Long id;
??? private String title;
??? private Date date;
??? public Event() {
??? }
??? /**
???? * @hibernate.id
???? * generator-class="uuid.hex"
???? * type="java.lang.String"
???? * unsaved-value=""
???? * column="EVENT_ID"
???? */
??? public Long getId() {
??????? return id;
??? }
??? private void setId(Long id) {
??????? this.id = id;
??? }
??? /**
???? * @hibernate.property
???? * column="EVENT_DATE"
???? * type = "timestamp"
???? *
???? *
???? */
??? public Date getDate() {
??????? return date;
??? }
??? public void setDate(Date date) {
??????? this.date = date;
??? }
??? /**
???? * @hibernate.property
???? * column="EVENT_TITLE"
???? * length="20"
???? *
???? */
??? public String getTitle() {
??????? return title;
??? }
??? public void setTitle(String title) {
??????? this.title = title;
??? }
}
?
上面的POJO,已經加上了xdoclet的javadoc tag了,現在用下面的ant文件來產生map和config文件:
?
<project name="xdoclet" default="hibernatedoclet">
??? <property name="sourcedir" value="${basedir}/src"/>
??? <property name="targetdir" value="${basedir}/bin"/>
??? <property name="librarydir" value="${basedir}/lib"/>
??? <path id="libraries">
??????? <fileset dir="${librarydir}">
??????????? <include name="*.jar"/>
??????? </fileset>
??? </path>
??? <target name="clean">
??????? <delete dir="${targetdir}"/>
??????? <mkdir dir="${targetdir}"/>
??? </target>
??? <target name="compile" depends="clean, copy-resources">
??????? <javac srcdir="${sourcedir}"
?????????????? destdir="${targetdir}"
?????????????? classpathref="libraries"/>
??? </target>
??? <target name="copy-resources">
??????? <copy todir="${targetdir}">
??????????? <fileset dir="${sourcedir}">
??????????????? <exclude name="**/*.java"/>
??????????? </fileset>
??????? </copy>
??? </target>
??? <taskdef name="hibernatedoclet" classname="xdoclet.modules.hibernate.HibernateDocletTask">
?????? <classpath>
???????????? <fileset dir="E:/workspace/xdoclet-1.2.3/lib" includes="*.jar"/>
??????? </classpath>
??? </taskdef>
??? <target name="hibernate" depends="compile" description="Generate mapping documents">
????????? <hibernatedoclet
??????????????? destdir="${targetdir}"
??????????????? excludedtags="@version,@author,@todo,@see"
??????????????? force="false"
??????????????? verbose="true">
??????????????? <fileset dir="${sourcedir}">
??????????????????? <include name="**/*.java"/>
??????????????? </fileset>
??????????????? <hibernatecfg
??????????????????????? dialect="net.sf.hibernate.dialect.xxxxx"
??????????????????????? driver="com.mysql.jdbc.Driver"
??????????????????????? jdbcUrl="jdbc:mysql://xxxxx"
??????????????????????? userName="xxxxx"
??????????????????????? password="xxxxx"/>
???????????????????????
???????????????? <hibernate version="3.0"/>
??????????? </hibernatedoclet>
??????? </target>
</project>
?
結果如下:
Event.hbm.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
??? "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
??? "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping
>
??? <class
??????? name="events.Event"
??????? table="EVENTS"
??? >
??????? <id
??????????? name="id"
??????????? column="EVENT_ID"
??????????? type="java.lang.String"
??????????? unsaved-value=""
??????? >
??????????? <generator class="uuid.hex">
????????????? <!--?
????????????????? To add non XDoclet generator parameters, create a file named
????????????????? hibernate-generator-params-Event.xml
????????????????? containing the additional parameters and place it in your merge dir.
????????????? -->
??????????? </generator>
??????? </id>
??????? <property
??????????? name="date"
??????????? type="timestamp"
??????????? update="true"
??????????? insert="true"
??????????? column="EVENT_DATE"
??????? />
??????? <property
??????????? name="title"
??????????? type="java.lang.String"
??????????? update="true"
??????????? insert="true"
??????????? column="EVENT_TITLE"
??????????? length="20"
??????? />
??????? <!--
??????????? To add non XDoclet property mappings, create a file named
??????????????? hibernate-properties-Event.xml
??????????? containing the additional properties and place it in your merge dir.
??????? -->
??? </class>
</hibernate-mapping>
hibernate.cfg.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">
<!-- Generated file - Do not edit! -->
<hibernate-configuration>
?<!-- a SessionFactory instance listed as /jndi/name -->
?<session-factory>
??<!-- properties -->
??<property name="dialect">net.sf.hibernate.dialect.MySQLDialect</property>
??<property name="show_sql">false</property>
??<property name="use_outer_join">false</property>
???<property name="connection.username">hibernate</property>
???<property name="connection.password">aPassword</property>
???<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
???<property name="connection.url">jdbc:mysql://xxx</property>
??<!-- mapping files -->
??<mapping resource="events/Event.hbm.xml"/>
?</session-factory>
</hibernate-configuration>
發現沒有,上面的config文件中的DTD版本還是2.0。
?

對于hibernate3來說,現在多了個選擇,用xdoclet2也可以產生map文件,但是config文件好像沒有辦法。
還是用上面POJO,對應的ant文件如下(注意,簡單起見,要把xdoclet2下面的lib目錄下的jar文件,全部copy到${basedir}/lib下):
<project name="xdoclet2-plugin" default="hibernatedoclet">
??? <property name="sourcedir" value="${basedir}/src"/>
??? <property name="targetdir" value="${basedir}/bin"/>
???? <property name="librarydir" value="${basedir}/lib"/>
?
??? <path id="libraries">
??????? <fileset dir="${librarydir}">
??????????? <include name="*.jar"/>
??????? </fileset>
??? </path>
??? <target name="clean">
??????? <delete dir="${targetdir}"/>
??????? <mkdir dir="${targetdir}"/>
??? </target>
??? <target name="compile" depends="clean, copy-resources">
??????? <javac srcdir="${sourcedir}"
?????????????? destdir="${targetdir}"
?????????????? classpathref="libraries"/>
??? </target>
??? <target name="copy-resources">
??????? <copy todir="${targetdir}">
??????????? <fileset dir="${sourcedir}">
??????????????? <exclude name="**/*.java"/>
??????????? </fileset>
??????? </copy>
??? </target>
??? <target name="hibernatedoclet"
??????????? depends="compile"
??????????? description="Generate Persistence and form classes">
??????????? <taskdef
??????????????? name="xdoclet"
??????????????? classname="org.xdoclet.ant.XDocletTask"
??????????????? classpathref="libraries"
??????????????? />
??????????? <xdoclet>
??????????????? <!-- defines the file handled by xdoclet2 -->
??????????????? <fileset dir="${sourcedir}">
??????????????????? <include name="**/*.java"/>
??????????????? </fileset>
??????????????? <!-- defines the processing of a plugin -->
??????????????? <component
??????????????????? classname="org.xdoclet.plugin.hibernate.HibernateMappingPlugin"
??????????????????? destdir="${targetdir}"
??????????????????? version="3.0"
??????????????????? />
??????????? </xdoclet>
??????? </target>

</project>
?
結果如下:
Event.hbm.xml:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
? <class table="EVENTS" name="events.Event">
??? <id type="java.lang.String" column="EVENT_ID" unsaved-value="" access="method" name="id">
????? <generator class="uuid.hex"/>
??? </id>
??? <property name="date" type="timestamp" access="method" column="EVENT_DATE"/>
??? <property name="title" length="20" access="method" column="EVENT_TITLE"/>
? </class>
</hibernate-mapping>
發現用xdoclet1.2.3和xdoclet2產生的map文件還是有些區別的,包括形式和內容,也許那些區別都無所謂,但是畢竟有不同。從形式來看,明星xdoclet2產生的文件好看些,所以,以后,我看還是應該用xdoclet2來產生map文件。config文件,就手寫吧。
?

?
應用?xdoclet1.2.3和xdoclet2,要注意的最大的一點是:POJO的javadoc tag中的所有@hibernate.collection-xxxxx都已經改變成@hibernate.xxxx了。所以,對已有的POJO應用xdoclet2時,可能要做個簡單的替換工作。


Peter Pan 2006-09-27 17:30 發表評論
]]>
java.lang.NoClassDefFoundError: org/hibernate/cfg/HbmBinder$SecondPasshttp://www.tkk7.com/fine/archive/2006/08/10/62715.htmlPeter PanPeter PanThu, 10 Aug 2006 01:23:00 GMThttp://www.tkk7.com/fine/archive/2006/08/10/62715.htmlhttp://www.tkk7.com/fine/comments/62715.htmlhttp://www.tkk7.com/fine/archive/2006/08/10/62715.html#Feedback1http://www.tkk7.com/fine/comments/commentRss/62715.htmlhttp://www.tkk7.com/fine/services/trackbacks/62715.htmljava.lang.NoClassDefFoundError: org/hibernate/cfg/HbmBinder$SecondPass
Problem with Spring 1.2.6 and Hibernate 3.1 : HbmBinder$SecondPass

今天又遇到了這個問題,真是讓人郁悶了老半天。一心揪出它的根本原因,經過了好半天的刺撓終于找到了就是(hibernate3.jar和hibernate-annotations.jar)的問題,簡單主法把hibernate-annotations.jar直接干掉就OK了。
好果有用到這個包就得去找個高點version的去用了。
不知道大家有沒有更好的解決方法呀

Exception in thread "main" org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext-hibernate.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: org/hibernate/cfg/HbmBinder$SecondPass
java.lang.NoClassDefFoundError: org/hibernate/cfg/HbmBinder$SecondPass
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :620)
at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:124) at java.net.URLClassLoader.defineClass(URLClassLoader .java:260)
at java.net.URLClassLoader.access$100(URLClassLoader. java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 06)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 51)
at java.lang.ClassLoader.loadClassInternal(ClassLoade r.java:319)
at org.hibernate.cfg.Configuration.add(Configuration. java:385)
at org.hibernate.cfg.Configuration.addInputStream(Con figuration.java:426)
at org.springframework.orm.hibernate3.LocalSessionFac toryBean.afterPropertiesSet(LocalSessionFactoryBea n.java:654)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.invokeInitMethods(Abstr actAutowireCapableBeanFactory.java:1059)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:363)
at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:226)
at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:147)
at org.springframework.beans.factory.support.DefaultL istableBeanFactory.preInstantiateSingletons(Defaul tListableBeanFactory.java:269)
at org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:320)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:87)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:72)
at org.stockfi.persistence.orm.hibernate.core.Main.ma in(Main.java:57)
?
?
reason is:It seems that org\hibernate\cfg\HbmBinder$SecondPass.class no longer exists in hibernate3.jar.
Specifically, the hibernate3.jar that ships with Spring 1.2.7 appears to be Hibernate v3.0.5. This version of the jar does indeed include the org/hibernate/cfg/HbmBinder$SecondPass class. When I remove this version of hibernate3.jar and replace it with the latest and greatest hibernate3.jar this problem arises. The latest version of Hibernate (hibernate3.jar) is v3.1.3.

By simply inspecting the contents of the hibernate3.jar files you will see this problem.

This leads me to believe that we must use the hibernate3.jar that ships with Spring v.1.2.7 (or whatever version people are using with respect to 1.2.x).

My immediate concern is that itermixing Hibernate 3.1.3 support/dependency jars with a v3.0.5 hibernate3.jar may cause issues. I suppose I will need to download and use Hibernate 3.0.5 to be safe but I'd like very much to use Hibernate 3.1.3 w/o concern.

Any ideas on whether a patch/update will be made available to get around this issue.

?
See if there's been any issue raised on this topic. I know this topic has been discussed several times but always the solution was using the proper jars (and eliminating old ones which were used as dependencies as already noted in this thread).
I've used spring with HB 3.1.3 and 3.0.5 without problems and by looking at the stacktrace, the problem is with hibernate (which actually calls the missing class) and not with Spring.


Peter Pan 2006-08-10 09:23 發表評論
]]>
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