java中org.apache.*是怎么加进去

java中org.apache.*包是怎么加进去的啊，还有这些包用不用下载？我用i从哪里找到后加进去的？请高手解决下，呵呵,还有能帮忙介绍下spring框架怎么用最好，谢谢

如果是WEB项目可以把包放在项目下WEB-INF/lib目录下.若是J2SE或J2ME项目则放在与src同级的lib目录下.学习深入后也可自己定义包的存放目录.至于spring框架的用法.是要看项目与团队的编程习惯而定.只要不错怎么用都行. 以下我就给个Spring的实例:<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=" http://www.springframework.org/schema/beans"
xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop=" http://www.springframework.org/schema/aop"
xmlns:tx=" http://www.springframework.org/schema/tx"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd"
default-autowire="byName" default-lazy-init="true"> <bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName">
<value>${hibernate.connection.driver}</value>
</property>
<property name="url">
<value>${hibernate.connection.url}</value>
</property>
<property name="username">
<value>${hibernate.connection.username}</value>
</property>
<property name="password">
<value>${hibernate.connection.password}</value>
</property>
</bean>

<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mappingDirectoryLocations">
<list>
<value>classpath*:/com/wxc/entity/model</value>
</list>
</property> <property name="schemaUpdate" value="true" /> <property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
${hibernate.dialect}
</prop>
<prop key="hibernate.connection.pool_size">5</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.cglib.use_reflection_optimizer">
true
</prop>
<prop key="hibernate.cache.provider_class">
org.hibernate.cache.EhCacheProvider
</prop>
<prop key="hibernate.hibernate.cache.use_query_cache">
true
</prop>
</props>
</property>
</bean>

<bean id="hibernateInterceptor" class="org.springframework.orm.hibernate3.HibernateInterceptor">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<!-- setup transaction manager -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean> <bean name="publicManager" class="com.wxc.manager.PublicManager"/>
<!-- 支持 @AspectJ 标记-->
<aop:aspectj-autoproxy />
<!-- 以AspectJ方式 定义 AOP -->
<aop:config proxy-target-class="true">
<aop:advisor pointcut="execution(* com.wxc.dao.*Dao.*(..))" advice-ref="txAdvice" />
<aop:advisor pointcut="execution(* com.wxc.manager.*.*Manager.*(..))" advice-ref="txAdvice" />
<!--
-->
</aop:config>
<!-- 基本事务定义,使用transactionManager作事务管理,默认get*方法的事务为readonly,其余方法按默认设置.
默认的设置请参考Spring文档事务一章. -->
<tx:advice id="txAdvice">
<tx:attributes>
<tx:method name="get*" read-only="true" />
<tx:method name="find*" read-only="true" />
<tx:method name="count*" read-only="true" />
<tx:method name="remove*" read-only="true" />
<tx:method name="*" rollback-for="RuntimeException" />
</tx:attributes>
</tx:advice></beans>

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