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XDoclet的build.xml写法 zz

jinfeng_wang — Thu, 20 Mar 2008 01:52:00 GMT

http://gocom.primeton.com/showblogarticle.php?cat_id=all&articleId=&blogId=14478&?PHPSESSID=0d485ace30025757c7b9a22da013c1a0&page=4&PHPSESSID=1370043e8b6d902ac0f6fdc3fe7776a8

XDoclet的build.xml写法

�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝�Q�＝

/**
* @spring.bean id="UserDAO"
* @spring.property name="dataSource" ref="dataSource"
* @spring.property name="sqlMapClient" ref="sqlMapClient"
*
* @author Conan
*
*/
public class UserDAOIbatis extends BaseDAOIBatis implements UserDAO {....}

-------------------------------------------

/**
* @spring.bean id="UserService"
* @spring.property name="userDao" ref="UserDAO"
*
* @author Conan
*
*/
public class UserServiceImpl extends BaseManager implements UserService {...}

---------------------------------------------

/**
*
* @struts.action path="/add" name="UserForm" input="/add.jsp"
* type="org.springframework.web.struts.DelegatingActionProxy"
* validate="true" scope="request"
*
* @struts.action-forward name="success" path="/success.jsp" redirect="true"
* @struts.action-forward name="failure" path="/failure.jsp" redirect="true"
*
* @struts.action-form name="UserForm"
*
* @spring.bean
* name="/add"
* @spring.property
* name="userService"
* ref="UserService"
*
*/
public final class AddAction extends BaseAction {...}

------------------------------------------

/**
* @struts.form name="UserForm"
*/
public class UserForm extends BaseForm{
/**
* @struts.validator type="required"
* @struts.validator type="mask" msgkey="error.age"
* @struts.validator-var name="mask" value="^[0-9]*$"
*/
public void setAge(Integer age) {
this.age = age;
}
}

jinfeng_wang 2008-03-20 09:52 发表评论

XDoclet Spring+Struts HowTo zz

jinfeng_wang — Thu, 20 Mar 2008 01:42:00 GMT

http://www.logemann.org/day/archives/000148.html

For all those out there using Spring together with Struts, i created a small howTo regarding automatic generation of relevant files, especially the boring action-servlet-xml file which must be in synch with your struts-config.xml, at least for all Struts actions which should be injected by Spring.

Lets start with the Action class:

/**

            * Action to delete a Client

            * Date: 09.02.2005

            * Time: 15:29:15

            *

            * @author Logemann - Logentis e.K. (ml@logentis.de)

            * @version $Id$

            * @struts.action path="clientDelete" validate="false"

            *            type="org.springframework.web.struts.DelegatingActionProxy"

            *            name="emptyform"

            * @struts.action-forward name="back" 

            *             path="/clientManager.html" redirect="true"

            * @spring.bean name="clientDelete"

            */

            public class ClientDeleteAction extends Action {

            

                ClientManager clientManagerService;
            

            

                /**

            

            * Spring injection

            

            *

            

            * @param clientManagerService clientManagerService

            

            * @spring.property ref="clientManagerService"

            

            */

            

            public void setClientManagerService(ClientManager clientManagerService) {

            

            this.clientManagerService = clientManagerService;

            

            }

            

            [..]

With this tags, the ant build target outlined below will create a struts-config.xml and the necessary action-servlet.xml needed by Spring. Lets see how the target looks:

classname="xdoclet.modules.spring.SpringDocletTask"
classpathref="classpath"/>

classname="xdoclet.modules.web.WebDocletTask"
classpathref="classpath"/>

Be sure to modify the classpath definition and the destDir values of springdoclet and webdoclet to suit your needs. Right now the Spring task only searches for Actions in order to create action-servlet.xml, if you also want to create your normal service beans like ClientManagerService, you should create another springdoclet task and output things to applicationContext.xml if you like.

But this is mostly users choice, as you know, Spring supports from one to many bean definition files and its up to you how you want to have your spring xml world.

This will be created when you run the mentioned target:

(action-servlet.xml)

"-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">

default-autowire="no"
default-lazy-init="false"
default-dependency-check="none"
>

name="clientDelete"
class="de.logentis.versysng.action.clientmanager.ClientDeleteAction"
>

(struts-config.xml)

path="clientDelete"
type="org.springframework.web.struts.DelegatingActionProxy"
name="emptyform"
scope="request"
unknown="false"
validate="false"
>
name="back"
path="/clientManager.html"
redirect="true"
/>

jinfeng_wang 2008-03-20 09:42 发表评论

Pro Spring: Spring and EJB (zz)

jinfeng_wang — Fri, 18 Mar 2005 06:35:00 GMT

摘要: Pro Spring: Spring and EJB Learn how to use Spring with EJB applictions Summary--> SummaryIn traditional J2EE applications, Enterprise JavaBeans (EJB) often forms the cornerstone of an application'... 阅读全文

jinfeng_wang 2005-03-18 14:35 发表评论

jinfeng_wang — Sun, 06 Mar 2005 06:46:00 GMT

PART 1 �?�?�?Getting Started with Spring
CHAPTER 1 Introducing Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CHAPTER 2 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
CHAPTER 3 The Sample Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
PART 2 �?�?�?Spring Basics
CHAPTER 4 Introducing Inversion of Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
CHAPTER 5 Beyond the Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
PART 3 �?�?�?Aspect Oriented Programming
with Spring
CHAPTER 6 Introducing Spring AOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
CHAPTER 7 More on Spring AOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
PART 4 �?�?�?Data Access with Spring
CHAPTER 8 Spring JDBC Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
CHAPTER 9 Using Hibernate in Spring Applications . . . . . . . . . . . . . . . . . . . . . . . 279
CHAPTER 10 iBATIS Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
vi ■CONTENTS AT A GLANCE
PART 5 �?�?�?Spring in the Middle Tier
CHAPTER 11 Designing and Implementing Spring-Based Applications . . . . . . 353
CHAPTER 12 Transaction Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
CHAPTER 13 Spring and J2EE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
CHAPTER 14 Job Scheduling with Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 487
CHAPTER 15 Mail Support in Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 517
CHAPTER 16 Using Spring Remoting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549
PART 6 �?�?�?Web Applications with Spring
CHAPTER 17 Web Applications with Spring MVC . . . . . . . . . . . . . . . . . . . . . . . . . . 599
CHAPTER 18 Beyond JSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 645
CHAPTER 19 Spring and Struts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 679
PART 7 �?�?�?Appendixes
APPENDIX A Testing with Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 697
APPENDIX B The Spring Rich Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 711
APPENDIX C Spring IDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 729
APPENDIX D The Future of Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 743

jinfeng_wang 2005-03-06 14:46 发表评论

Spring Transaction

jinfeng_wang — Fri, 04 Mar 2005 06:15:00 GMT

Spring Transaction�Q�通过Template+Callback机制�Q�实现对各种事务的统一��装�?/SPAN>

�?/SPAN>JDBC Transaction的封�?/SPAN>

class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

dataSource">

�?/SPAN>Hibernate事务的封�?/SPAN>

class="org.springframework.orm.hibernate.HibernateTransactionManager">

sessionFactory">

�?/SPAN>JDO事务的封�?/SPAN>

class="org.springframework.orm.jdo.JdoTransactionManager">

persistenceManagerFactory">

�?/SPAN>JTA 事务的封�?/SPAN>

class="org.springframework.transaction.jta.JtaTransactionManager">

transactionManagerName">

java:/TransactionManager

利用AOP�Q�将TransactionManager和普通的Service�~�织��h��Q�实��C��务�?/SPAN>

class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">

proxyInterfaces">//�~�织后对外的接口

com.springinaction.training.service.CourseService

target">//目标

courseServiceTarget"/>

transactionManager">//植入的事务管理�?/SPAN>

transactionManager"/>

//事务的参敎ͼ�隔离度，�Ҏ��名等�Q?/SPAN>

jinfeng_wang 2005-03-04 14:15 发表评论

Spring��装Hibernate

jinfeng_wang — Thu, 03 Mar 2005 08:58:00 GMT

Spring��装Hibernate�Q?/SPAN>

有两�U�手�D�：1、��?/SPAN>HibernateTemplate�Q?/SPAN>2、��?/SPAN>HibernateDaoSupport�Q�实际上�Q?/SPAN>HibernateDaoSupport本��n��是�?/SPAN>HibernateTemplate的一个封装）

一切尽在代码中�Q�查�?/SPAN>API唉！

注意�Q�hibernate 2.X和hibernate3.X的区别，我用的是2.X �?nbsp;

package com.company.example.dao;

import java.util.List;

import com.company.example.model.Student;

public interface StudentDao {

public abstract Student getStudent(final Integer id);

public abstract void updateStudent(Student student);

public abstract List findStudentsByLastName(String lastName);

}

==================

package com.company.example.dao.hibernateImpl;

import java.util.List;

import net.sf.hibernate.Hibernate;

import net.sf.hibernate.HibernateException;

import net.sf.hibernate.Session;

import org.springframework.orm.hibernate.HibernateCallback;

import org.springframework.orm.hibernate.HibernateTemplate;

import com.company.example.dao.StudentDao;

import com.company.example.model.Student;

public class StudentDaoHibernate implements StudentDao {

HibernateTemplate hibernateTemplate;

public static void main(String[] args) {

}

public HibernateTemplate getHibernateTemplate() {

return hibernateTemplate;

}

public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {

this.hibernateTemplate = hibernateTemplate;

}

public Student getStudent(final Integer id) {

return (Student) hibernateTemplate.execute(new HibernateCallback() {

public Object doInHibernate(Session session)

throws HibernateException {

return session.load(Student.class, id);

}

});

}

public Student getStudent2(Integer id) {

return (Student) hibernateTemplate.load(Student.class, id);

}

public void updateStudent(Student student) {

hibernateTemplate.update(student);

}

public List findStudentsByLastName(String lastName) {

return hibernateTemplate.find("from Student student "

+ "where student.lastName = ?", lastName, Hibernate.STRING);

}

public class StudentDaoHibernate extends HibernateDaoSupport

implements StudentDao {

...........

}
======The Spring XML Configuration===========

"

   class="org.springframework.jndi.JndiObjectFactoryBean">

   java:comp/env/jdbc/trainingDatasource







    net.sf.hibernate.dialect.MySQLDialect




    Student.hbm.xml
    Course.hbm.xml





    classpath:/com/springinaction/training/model



   class="org.springframework.orm.hibernate.HibernateTemplate">

jinfeng_wang 2005-03-03 16:58 发表评论

Spring JDBC DAO的两个example

jinfeng_wang — Thu, 03 Mar 2005 06:40:00 GMT

摘要: import java.sql.CallableStatement;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Types;import java.uti... 阅读全文

jinfeng_wang 2005-03-03 14:40 发表评论

jinfeng_wang — Thu, 03 Mar 2005 05:04:00 GMT

Spring DAO的哲学：

��装所有的数据库访问实玎ͼ�包括JDBC,JDO,Hibernate�{��?/SPAN>

Spring的异�怸�般都�?/SPAN>RuntimeException�Q�数据访问的根异常是DataAccessException�Q�所有的Spring的数据访问异帔R��l�承DataAccessException。此�?/SPAN>DataAccessException�?/SPAN>nestedRuntimeException子类中，已经��所有的异常栈都�q�行了记录�?/SPAN>

Spring�?/SPAN>DAO异常�Ҏ��有底层的DAO讉K��实现层的异常�q�行了统一的封装，�q�给��Z��更�ؓ有意义的异常�?/SPAN>

CleanupFailureDataAccessException�Q�清除失败异�?/SPAN>

DataAccessResourceFailureException�Q�资源访问异�?/SPAN>

DataIntegrityViolationException�Q�完整性约束异�?/SPAN>

DataRetrievalFailureException�Q�数据获取异�?/SPAN>

DeadlockLoserDataAccessException�Q�死锁访问异�?/SPAN>

IncorrectUpdateSemanticsDataAccessException�Q�更新出错异�?/SPAN>

InvalidDataAccessApiUsageException�Q�无效数据访�?/SPAN>API使用异常

InvalidDataAccessResourceUsageException�Q�无效数据访问资源��用异�?/SPAN>

OptimisticLockingFailureException�Q�乐观锁��p�|异常

TypeMismatchDataAccessException�Q�类型匹配失败异�?/SPAN>

UncategorizedDataAccessException�Q�其他原因异�?BR>

Spring使用Template�?/SPAN>Callback模式完成了对底层实现的统一��装�Q�其�?/SPAN>Template负责完成那些通用的功能（处理事务、管理资源、处理异常）�Q?/SPAN>Callback则完成变化的那部分内容（创徏statement、设定参�?/SPAN>parameter、生成数据集result�Q�。参考图4.2�?/SPAN>4.3太重要了�?/SPAN>

jinfeng_wang 2005-03-03 13:04 发表评论

Spring AOP中的Introduction

jinfeng_wang — Thu, 03 Mar 2005 02:49:00 GMT

Spring AOP中的Introduction�Q?/SPAN>

正如前面已经提到的，Introduction和前面的四个advice是有很大的区别的�Q?/SPAN>introduction用于�l?/SPAN>target引入新的接口�Q�例如锁�Q�状态等功能�Q�，生成一�?/SPAN>mix-in的接口。而普通的advice只是在原有接口基��上增加附加内宏V�?/SPAN>

�?/SPAN>Spring中，完成一�?/SPAN>introduction需要三个内容：1、将要添加的新接口的定义�Q?/SPAN>2、该新接口的实现�Q�在实现�?/SPAN>class中，必须实现Spring�?/SPAN>IntroductionInterceptor接口�Q?/SPAN>Spring in action原文有误�Q�，3�?/SPAN>IntroductionAdvisor接口的实�?/SPAN>�?/SPAN>

public interface IntroductionInterceptor extends MethodInterceptor {

boolean implementsInterface(Class intf);

java.lang.Object invoke(MethodInvocation invocation) //此方法来源于MethodInterceptor

}

其中implementsInterface�Ҏ��q�回一�?/SPAN>boolean��|��此方法用于判断该introduction实现是否实现了某个接口―�?/SPAN>intf参数。所有对intf接口的调用都会�{发给invoke�Ҏ��Q�由invoke�Ҏ��完成相应的�Q务。下面给��Z��子（�l�某个类��d��是否auditable功能�Q�：

public interface Auditable {//1�?/SPAN>auditable接口的定�?/SPAN>

void setLastModifiedDate(Date date);

Date getLastModifiedDate();

}

public class AuditableMixin

implements IntroductionInterceptor, Auditable {//2�?/SPAN>auditable接口的实玎ͼ�同时要实�?/SPAN>IntroductionInterceptor接口

public boolean implementsInterface(Class intf) {

return intf.isAssignableFrom(Auditable.class); // AuditableMixin实现�?/SPAN>Auditable�cȝ��功能

}

public Object invoke(MethodInvocation m) throws Throwable {

if (implementsInterface(m.getMethod().getDeclaringClass())) {

//�?/SPAN>invoke的参�?/SPAN>m�q�行判断�Q�当前的调用是否�?/SPAN>implementsInterface范围内，卻I��当前的调用是否是auditable接口中的�Ҏ��Q?/SPAN>

return m.getMethod().invoke(this, m.getArguments());

//�q�里�?/SPAN>this��是自己�Q�调用引入的�Ҏ��Q�属�?/SPAN>auditable接口的方法）�Q�这样也��q��target��d��了新�?/SPAN>auditable接口�?/SPAN>

} else {

return m.proceed();//其他�Ҏ��的调用�?/SPAN>

}

private Date lastModifiedDate; //实现auditable接口�?/SPAN>

public Date getLastModifiedDate() {

return lastModifiedDate;

}

public void setLastModifiedDate(Date lastModifiedDate) {

this.lastModifiedDate = lastModifiedDate;

}

�?/SPAN>Spring中，除了上面直接实现IntroductionInterceptor接口之外�Q�还可以通过�l�承DelegatingIntroductionInterceptor�c�d��现。其�?/SPAN>DelegatingIntroductionInterceptor�l�出�?/SPAN>IntroductionInterceptor接口中的两个�Ҏ��Q?/SPAN>implementsInterface�Q?/SPAN>invoke�Q�的默认实现�Q�你仅需要实�?/SPAN>auditable接口卛_��?/SPAN>

通过跟踪Spring源代码可以发玎ͼ�DelegatingIntroductionInterceptor�?/SPAN>implementsInterface �Q�在IntroductionInfoSupport�c�M��Q�和invoke�Ҏ��与上面的代码的�Ş式基本一致。下面是利用DelegatingIntroductionInterceptor写出�?/SPAN>AuditableMixin�Q?/SPAN>

public class AuditableMixin

extends DelegatingIntroductionInterceptor implements Auditable {

private Date lastModifiedDate;

public Date getLastModifiedDate() {

return lastModifiedDate;

}

public void setLastModifiedDate(Date lastModifiedDate) {

this.lastModifiedDate = lastModifiedDate;

}

注意��C��点：上面的两�?/SPAN>AuditableMixin的实现都仅仅是给Target��d��行�ؓ�Q�但是未曾改�?/SPAN>Target的原有行为（因�ؓ�?/SPAN>invoke�Ҏ��的实��C��Q�还是会转发�l?/SPAN>Target�Q�。如果需要改�?/SPAN>Target的行�?SPAN style="COLOR: red">�Q�例如给Target增加lock接口�Q�一旦处�?/SPAN>locked状态，那么再调�?/SPAN>Target的方法就会出现异常）�Q�这��需要自己写代码修改invoke�Ҏ��?/SPAN>

public class ImmutableMixin

extends DelegatingIntroductionInterceptor implements Immutable {

private boolean immutable;

public void setImmutable(boolean immutable) {

this.immutable = immutable;

}

public Object invoke(MethodInvocation mi) throws Throwable {

String name = mi.getMethod().getName();

if (immutable && name.indexOf("set") == 0) { //�q�里一旦已�l�是immutable了，那么��׃��可以调用setXXX�Ҏ��了，�q�也��改变了Target的行为，而不是前面的仅增加接口�?/SPAN>

throw new IllegalModificationException();

}

return super.invoke(mi);

}

Spring中的Introduction需要有自己�?/SPAN>advisor: IntroductionAdvisor

剩下的也��是和前面一��L��xml文�g的编写了�?BR>

Spring中��用Introduction需要注意的问题�Q?BR> �׃��Spring使用的是动态AOP,�q�没有象AspectJ使用静态的代码预编译的方式生成AOP代码�Q�因此只有你从Spring的BeanFactory中得到的Introduction Bean才会已经被introducted�Q�而直接在代码中new出来的target对象则不��h��Intorduction功能�?你可以��用一个Factory�Q�封装对Introduction的创建�?/SPAN>

jinfeng_wang 2005-03-03 10:49 发表评论

Spring AOP中的pointcut

jinfeng_wang — Wed, 02 Mar 2005 09:33:00 GMT

Spring AOP中的pointcut�Q?/SPAN>

PointCuts用于定义所需要“拦截”的class及其method。分为静态、动态两�U?/SPAN>pointcut。其中静�?/SPAN>pointcuts仅和class name, method name相关�Q�可以在配置文�g中通过正则表达式进行部�|Ԍ��因此它们都可以在�q�行前进行确认。而动�?/SPAN>pointcuts则需要考虑到方法的参数�Q�在�q�行时动态的��认pointcuts。一般来��_��都是�Ҏ��method�?/SPAN>class的名字来�q�行。其涉及到的接口如下定义�Q?/SPAN>

public interface Pointcut {

ClassFilter getClassFilter();

MethodMatcher getMethodMatcher();

}

public interface ClassFilter {

boolean matches(Class clazz);

}

public interface MethodMatcher {

boolean matches(Method m, Class targetClass);

boolean isRuntime();

boolean matches(Method m, Class targetClass, Object[] args);

}

两种静�?/SPAN>pointcut的实玎ͼ�

NameMatchMethodPointcut�Q�只能对�Ҏ��名进行判别�?/SPAN>

RegexpMethodPointcut�Q�可以对�c�d��、方法名使用正则表达式判别�?/SPAN>

class="com.springinaction.chapter03.cleaning.MaidService"/>

class="org.springframework.aop.support.RegExpPointcutAdvisor">

.*get.+By.+

class="org.springframework.aop.framework.ProxyFactoryBean">

com.springinaction.chapter03.cleaning.MaidService

queryPointcutAdvisor

一�U�动�?/SPAN>pointcut的实玎ͼ�

ControlFlowPointcut�Q�根据当前运行栈的情况，军_��当前�?/SPAN>advice是否需要被触发。因为它完全��Z��q�行时栈的情况做决策�Q�所以运行速度肯定会变慢�?/SPAN>

javax.servlet.http.HttpServlet

MyService

servletAdvisor

jinfeng_wang 2005-03-02 17:33 发表评论

SpringAOP中的advisor

jinfeng_wang — Wed, 02 Mar 2005 09:32:00 GMT

SpringAOP中的advisor�Q?/SPAN>

前面已经提到�Q?/SPAN>advisor是是PointCut�?/SPAN>Advice的综合体�Q�完整描�q�C��一�?/SPAN>advice��会�?/SPAN>pointcut所定义的位�|�被触发。也��是��_��它包含了pointcut�?/SPAN>advice两项内容�Q�这两项内容则用于分别给�?/SPAN>advice调用所发生的位�|�和发生的内宏V��其接口如下�Q?/SPAN>

public interface PointcutAdvisor {

Pointcut getPointcut();

Advice getAdvice();

}

jinfeng_wang 2005-03-02 17:32 发表评论

Spring AOP中的四个Advice

jinfeng_wang — Wed, 02 Mar 2005 09:31:00 GMT

1�?SPAN style="FONT: 7pt 'Times New Roman'"> around advice�Q�所�?/SPAN>around advice必须实现MethodInterceptor接口�Q�注�?/SPAN>invoke�Ҏ��的参�?/SPAN>invocation�?/SPAN>MethodInvocation接口�Q�在此中包含了许多信息，包括其所��装的方法及其参敎ͼ�AOP proxy�?/SPAN>Jointcut�{��?/SPAN>

public interface MethodInterceptor extends Interceptor {

Object invoke(MethodInvocation invocation) throws Throwable;

}

在实�?/SPAN>around advice�Ӟ��?/SPAN>before advice�?/SPAN>after advice有着两个很大的区别：1、必��d��invoke�Ҏ��中调�?/SPAN>MethodInvocation.proceed()�Q�这��h��能将所有调用�g�l�下去，调用target对象�?/SPAN>method�Q?/SPAN>2、必��自��p��回一�?/SPAN>object�Q�该object甚至可以�?/SPAN>target’s method的返回��g��一栗��?/SPAN>

2�?SPAN style="FONT: 7pt 'Times New Roman'"> before advice�Q�在jointcut执行之前�Q�运�?/SPAN>advice。必��d��?/SPAN>MethodBeforeAdvice接口�?/SPAN>

public interface MethodBeforeAdvice extends BeforeAdvice {

void before(Method m, Object[] args, Object target) throws Throwable;

}

3�?SPAN style="FONT: 7pt 'Times New Roman'"> after advice�Q�在jointcut执行之后�Q�运�?/SPAN>advice。必��d��?/SPAN>AfterReturningAdvice接口�?/SPAN>

public interface AfterReturningAdvice extends Advice {

void afterReturning(Object returnValue, Method m, Object[] args, Object target)

throws Throwable;

}

4�?SPAN style="FONT: 7pt 'Times New Roman'"> throws advice�Q�在jointcut执行出现异常的时候，�q�行�?/SPAN>advice。必��d��?/SPAN>ThrowsAdvice接口。但是此接口只是一个标识接口，必须实现此外实现下面的方法：

afterThrowing([Method], [args], [target], subclassOfThrowable)

此外�Q�在jointcut出现异常�Ӟ��具体调用哪个afterThrowing�Ҏ��Q�这��涉及到�c�d��判别�Q�最�W�合�c�d��判别的将会被调用�?/SPAN>

jinfeng_wang 2005-03-02 17:31 发表评论

Spring AOP 概念

jinfeng_wang — Wed, 02 Mar 2005 09:30:00 GMT

切面�Q?/SPAN>Aspect�Q�：对象操作�q�程中的截面�Q�也��是某方面的��d��Q�例如事务、日志�?/SPAN>

�q�接点（JoinPoint�Q�：�E�序�q�行�q�程中的某个阶段炏V��如某个�Ҏ��调用�Q�或者某个异常被抛出�?/SPAN>

处理逻辑�Q?/SPAN>Advice�Q�：在某个连接点所采用的处理逻辑。处理逻辑的调用模式通常有三�U�：

i. Around�Q�在�q�接点前后插入预处理�q�程和后处理�q�程�?/SPAN>

ii. Before�Q�仅在连接点之前插入预处理过�E��?/SPAN>

iii. After�Q�在�q�接点之后进行处理�?/SPAN>

iv. Throw�Q�在�q�接�Ҏ��出异常时�q�行异常处理�?/SPAN>

切点�Q?/SPAN>PointCut�Q�：一�p�d��q�接点的集合�Q�它指明处理方式�Q?/SPAN>Advice�Q�将在何处被触发�Q�可以��用正则表辑ּ�表达�?/SPAN>

Advisor�Q�是PointCut�?/SPAN>Advice的综合体�Q�完整描�q�C��一�?/SPAN>advice��会�?/SPAN>pointcut所定义的位�|�被触发�?/SPAN>

Introduction�Q��ؓadvised object加上一定的�Ҏ��或者数据成员。与Advice属于�q�列的概念，但有着一定的区别�?/SPAN>Advice只是�l?/SPAN>target附加上其他的功能�Q��用者甚臛_��以觉察不刎ͼ�但是Introduction则添加了其他的功能，例如�l?/SPAN>target赋予�?/SPAN>lock功能�Q�状态等�?/SPAN>

jinfeng_wang 2005-03-02 17:30 发表评论

jinfeng_wang — Wed, 02 Mar 2005 03:48:00 GMT

Spring的配�|�文�?/SPAN>

1�?SPAN style="FONT: 7pt 'Times New Roman'"> 对于那些使用到有限外部资源的bean�Q�无非必要，请尽量��?/SPAN>singleton

2�?SPAN style="FONT: 7pt 'Times New Roman'"> init-method�?/SPAN>Bean创徏开始时调用�Q?/SPAN>destory-method在销毁时调用.Spring自己提供�?/SPAN>InitializingBean�Q?/SPAN>DisposableBean.�q�两个接口完成这两个功能�Q�一�?/SPAN>Bean对象实现了这两个接口�Q�则无需�q�行��M��配置�Q�容器就会实现这两个功能。（当然�Q�这也就使得你的应用�?/SPAN>Spring API捆绑��C��一��P��

3�?SPAN style="FONT: 7pt 'Times New Roman'"> Innner Bean�Q�这��L��配置使得inner bean只能�?/SPAN>wrapper bean所引用。这点在AOP中尤其有用：BeanFactory只能讉K��AOProxy�Q�而不能直接得�?/SPAN>AOProxy所��装�?/SPAN>target object�?/SPAN>

4�?SPAN style="FONT: 7pt 'Times New Roman'"> 集合元素

àjava.awt.List, arrays

àjava.awt.Set

àjava.awt.Map

àjava.awt.Properties

5�?SPAN style="FONT: 7pt 'Times New Roman'"> 讄��I��|��

6�?SPAN style="FONT: 7pt 'Times New Roman'"> 构造函数注入：用于那些必须的�?/SPAN>final的参数。如果构造函数的参数可能引�v冲突�Q�可以在配置文�g中给各参数加�?/SPAN>type�?/SPAN>

7�?SPAN style="FONT: 7pt 'Times New Roman'"> autowiring�Q�它会带来一定的问题�Q�因为无论如�?/SPAN>autowiring�Q�都无法保证其结果一定正��，很可能会出现许多与预期不一致的地方�?/SPAN>

jinfeng_wang 2005-03-02 11:48 发表评论

Spring中Container��理Bean

jinfeng_wang — Wed, 02 Mar 2005 02:36:00 GMT

�?/SPAN>Spring中，含有两个重要�?/SPAN>Container�Q�用于管理这�?/SPAN>javabean他们�?/SPAN>BeanFactory�?/SPAN>ApplicationContext。其�?/SPAN>ApplicationContext�l�承�?/SPAN>BeanFactory的所有功能，�q�提供了i18n、统一载入资源、事件分发等功能�?/SPAN>

�?/SPAN>BeanFactory中，所有的bean对象的创建都�?/SPAN>lazy的，包括那些singleton bean。只�?/SPAN>javabean对象必须被��用的时候，才会创徏该对象，才会正式的解析相应的xml标记�Q�解析该bean�?/SPAN>property�{�。但是在ApplicationContext�Q�它可以预先载入sigleton bean�Q�而不是直��C��用时才创建�?/SPAN>

BeanFactory最常用的实现是XmlBeanFactory�Q�蝲入“定�?/SPAN>xml”文�Ӟ��

BeanFactory factory = new XmlBeanFactory(new FileInputStream("beans.xml"));

ApplicationContext有三�U�实玎ͼ�ClassPathXmlApplicationContext�Q?/SPAN>FileSystemXmlApplicationContext�Q?/SPAN>XmlWebApplicationContext。其中前两者也是基于�\径的�Q�和BeanFactory�?/SPAN>xml文�g定位方式一致�?/SPAN>

ApplicationContext context =new FileSystemXmlApplicationContext("c:/foo.xml");

ApplicationContext context = new ClassPathXmlApplicationContext("foo.xml");

BeanFactory��理Bean对象的生命周期：

1�?SPAN style="FONT: 7pt 'Times New Roman'"> 使用构造函数创�?/SPAN>Bean对象

2�?SPAN style="FONT: 7pt 'Times New Roman'"> Bean对象autowire被执�?/SPAN>

3�?SPAN style="FONT: 7pt 'Times New Roman'"> Bean对象调用各项setXXX�Ҏ��

4�?SPAN style="FONT: 7pt 'Times New Roman'"> 如果�?/SPAN>Bean实现�?/SPAN>BeanNameAware接口�Q�则调用该对象的setBeanName()�Ҏ��Q�设�|�其ID�Q�已�l�在xml配置文�g中写好了�Q?/SPAN>

5�?SPAN style="FONT: 7pt 'Times New Roman'"> 如果�?/SPAN>Bean实现�?/SPAN>BeanFactoryAware接口�Q�则调用该对象的setBeanFactory()�Ҏ��Q�传�?/SPAN>BeanFactory对象自��n

6�?SPAN style="FONT: 7pt 'Times New Roman'"> 如果已经配置�?/SPAN>BeanPostProcessor�Q�那么调�?/SPAN>BeanPostProcessors�?/SPAN>pre-

ProcessBeforeInitialization()�Ҏ��Q�对该Bean对象�q�行处理�Q?/SPAN>

7�?SPAN style="FONT: 7pt 'Times New Roman'"> 如果�?/SPAN>bean自定义了init()�Ҏ��Q�那么调用此�Ҏ��

8�?SPAN style="FONT: 7pt 'Times New Roman'"> 如果已经配置�?/SPAN>BeanPostProcessor�Q�那么调用该BeanPostProcessors�?/SPAN>post

ProcessBeforeInitialization()�Ҏ��Q�对该Bean对象�q�行处理

9�?SPAN style="FONT: 7pt 'Times New Roman'"> 正常使用

10�?SPAN style="FONT: 7pt 'Times New Roman'"> �pȝ��销毁，如果�?/SPAN>bean对象实现�?/SPAN>DisposableBean接口�Q�则调用�?/SPAN>destory()�Ҏ��Q?/SPAN>

11�?SPAN style="FONT: 7pt 'Times New Roman'"> 最后调用用户在配置文�g中编写的destroy-method

jinfeng_wang 2005-03-02 10:36 发表评论

Sping Live�W�记一

jinfeng_wang — Tue, 01 Mar 2005 09:39:00 GMT

整个Web应用分�ؓ四部�?/SPAN>

1�?SPAN style="FONT: 7pt 'Times New Roman'"> 单独�?/SPAN>DAO�Q�负责数据访问，执行CUID(create, update, insert ,delete)�Q?SPAN style="COLOR: red">完成O/R映射。不涉及��M��的其他逻辑�Q�仅执行�q�以上的操作�Q�如果有唯一性检查、事务也不需要做。（可以在数据库端加一�?/SPAN>trigger,constraint�Q��?SPAN style="COLOR: red">该层需要定�?/SPAN>DAO接口�Q?/SPAN>DAO实现(hibernate�Q?/SPAN>ibaits�Q?/SPAN>JDBC�{?/SPAN>)�?/SPAN>

2�?SPAN style="FONT: 7pt 'Times New Roman'"> ��单的Logic Object�Q?/SPAN>Java Bean�Q�，data field+setter+getter+Other Logic�Q�可以将一些共有的操作提取到父�c�M��Q�减��代码�?/SPAN>

3�?SPAN style="FONT: 7pt 'Times New Roman'"> Business Sevice�Q�实��C��务逻辑�Q�在此��?/SPAN>DAO�?/SPAN>Logic Object完成业务操作�?/SPAN>�q�里当��用到DAO�Ӟ��只需�?/SPAN>IOC注入�Q�真实对象由外界�Q?/SPAN>Web容器调用Spring容器�Q�注入�?/SPAN>

4�?SPAN style="FONT: 7pt 'Times New Roman'"> �~�写Action�Q�将用户界面的操作映��到Busibess service�?/SPAN>

使用Spring MVC的具体配�|�：

1�?/SPAN>�?/SPAN>web.xml�?/SPAN>, 增加dispatcher的定义，配置�?/SPAN>URL Mapping分发用户调用�?/SPAN>

action

org.springframework.web.servlet.DispatcherServlet

action

*.html

�~�写相应�?/SPAN>action-servlet.xml

2、如果��用了多个context文�g�Q?/SPAN>Spring的配�|�文�Ӟ��Q�则需要在Web.xml中进行配�|�，具体如下�Q?/SPAN>

<context-param>

<param-name>contextConfigLocationparam-name>

<param-value>

/WEB-INF/applicationContext1.xml

/WEB-INF/applicationContext2.xml

param-value>

context-param>

其位�|�在�?/SPAN>sitemesh filter”之后，但是�?/SPAN>filter-mapping之前�?/SPAN>

3. 增加ContextLoaderListener.

org.springframework.web.context.ContextLoaderListener

对照了Spring in action,那个讲的更好哦。从spring的基��开始讲��P��很不错�?/P>

jinfeng_wang 2005-03-01 17:39 发表评论

Spring利用dynamic proxy实现AOP

jinfeng_wang — Sun, 20 Feb 2005 14:17:00 GMT

quote="firebody" ]
至于上面所说的动态代理，�l�你一个更��单的说法�Q�比如Spring里的TransactionProxyFactoryBean�Q�他是对支持事务��理的一个代理FactoryBean�Q�利用动态代理，�q�个�c�d��以不依赖于具体的target 接口�Q�用户可以随意选择target 接口。也不需要用户再手工�Ҏ��自己的target 接口扩展一个TransactionProxyFactoryBean�?�q�样的一个用到java.lang.reflect的动态代理机�Ӟ��使得用户需要编写的代码量大大减��，也��得整个框枉��|��用趋于一致。[/quote]

java代码:

        class="org.springframework.aop.framework.ProxyFactoryBean"> 
            
                 ISomeInterface  
                        
                                lockMixinAdvisor

我奇怪的是，既然有下面这个，

java代码:

class="org.springframework.aop.framework.ProxyFactoryBean"> 

那么�E�序代码中，怎么可以�q�样写？

java代码:

ISomeInterface someObjectProxy = (ISomeInterface) context 
                .getBean("someObjectProxy"); 

注意�Q�这里返回的是ISomeInterface �Q�而且�q�个someObjectProxy 对象已经��h��了ILock�Q�ISomeInterface 的功能，�q�且在行��现的完全和ISomeInterface 一致�?

如果Spring的代码是预编译的�Q�那可以产生stub之类的，可这里是怎么实现的，��人奇怪哦�Q�谁能解释一下么�Q?

�{�案 �Q?http://www.javajia.com/article.php?id=919

只是在这上面再封装的完美�|�了�Q�好好研�I�dynamic proxy的实现吧�?/P>

此外�Q�还有这一�D�哦 �Q�）

AOP的作用可以简单如下所��_��“在一个组件的前后加上一些固定的内容。�?抛开AOP不说�Q�我们自己如果想要写�q�东西，无非两种方式�Q�一个是proxy实现�Q�然后在proxy的前后添加内容；�q�有一�U�就是template实现�?
所以在我看来，数据库层的模板其实也��是一�U�“AOP”�?不知道有没�h�Ҏ��有些意见和评�q�ͼ�

jinfeng_wang 2005-02-20 22:17 发表评论

jinfeng_wang — Sun, 20 Feb 2005 08:25:00 GMT

下蝲了spring ide, 其具体的使用�Ҏ��?/P>

Usage

Fresh Installation

Add Spring Beans project nature
- select open project nodes in Eclipse resource navigator�Q?or JDT package explorer
- 在Eclipse的resource navigator�H�口中打开��目�Q�（或者在 JDT package explorer�H�口�Q?
- activate context menu item "Add Spring Beans Project Nature" on selected projects -> these projects are now decorated with a small 'S' in the upper right corner (overwriting other decorators, e.g. Java project decorator 'J')
- 在所打开的项目中�Q�右键项目名�Q�选择“Add Spring Beans Project Nature”，�q�时该项目就会在右上角挂上了“S�? :)
Add references to other Spring projects
- open project's properties dialog in Eclipse resource navigator or JDT package explorer
- 右键��目名，查看其properties,�q�就打开�?project properties"�H�口
- select the properties page "Project References" from the list
- �q�时��可以选择 "Project References"
- select Spring project(s) containing Spring Beans config files which are referenced from within in this project's Spring Beans config sets
- 选择所依赖引用的项�?/LI>
Add Spring Beans factory config files
- open project's properties dialog in Eclipse resource navigator or JDT package explorer or via double-clicking a project in the Spring Beans view
- 同样�Q�再�ơ打开��目的属性对话框�Q�或者也可以打开“Spring Beans View�?�q�个�H�口可以在window->slow view里面打开)
- select the properties page "Spring Beans Project" from the list
- 在项目的属性窗口中选择"Spring Beans Project"
- use button "Add..." to open a selector dialog and select all Spring Beans config files -> added Spring Beans config files are decorated with a small 'S' in the upper right corner
- 通过“Add”按钮选择Spring配置文�g�?
- (optionally) combine config files into config sets with the second tab of the property page (use "New..." to create a new config set and select the config files; use "Move Up" and "Move Down" to change the order of the config files)
Open Spring Beans view
- select from within any of the added Spring Beans config files opened in an Eclipse editor the menu item "Navigate/Show In/Spring Beans" -> Spring Beans view is opened and the corresponding Spring Beans config file is selected in the view's model
- Double clicking on an entry in the view navigates to the corresponding location in the config file
Validate Spring Beans config file
- save any of the added Spring Beans config files from within an open Eclipse editor -> all errors occured during validation create a problem marker in Eclipse's task view
- 保存Spring配置文�g�Q�这时就可以看到错误�?�Q�俺没有能够在task�H�口中看刎ͼ�但在Bean.xml文�g的编辑窗口看��C��Q�嘻嘻～～～�Q?
- 另外�Q�可以观察一�?Spring beans"那个�H�口�Q�在其上面有三个按钮�Q�第三个�?show in property sheet", �q�个功能不错哦，可以试一下。当然了�Q�直接看xml文�g也是挺好的�?/LI>

6、非常好的一个功能，在Spring Beans那个�H�口中添加好你的Spring配置文�g之后�Q�在其中右键你的配置文�g�Q�选择“show graph”，it's such a wonderful function~~~~

在线安装地址�Q? http://springframework.sourceforge.net/spring-ide/eclipse/updatesite/.

注意哦，在安装的时候，一定要选“Spring framework�?然后才可以装“Spring IDE�?��是Beans Configuration Support啦�?

jinfeng_wang 2005-02-20 16:25 发表评论

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XDoclet的build.xml写法 zz

XDoclet Spring+Struts HowTo zz

Pro Spring: Spring and EJB (zz)

Spring Transaction

Spring���装Hibernate

Spring JDBC DAO的两个example

Spring AOP中的Introduction

Spring AOP中的pointcut

SpringAOP中的advisor

Spring AOP中的四个Advice

Spring AOP 概念

Spring中Container���理Bean

Sping Live�W�记一

Spring利用dynamic proxy实现AOP

Usage

Fresh Installation

Spring��装Hibernate

Spring中Container��理Bean