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一、域模型
先从最底层开始,把域模型建立起来,创建一个Plug-in
project -
domain里面的logic,引用了dao,dao也引用了domain,会导致一个错误,于是将logic做为一个独立的bundle,就称为域逻辑吧
二、域逻辑
创建一个Plug-in project - org.phrancol.osgi.jpetstore.domain.logic,不创建Activator,创建一个同名package,将jpetstore\src\org\springframework\samples\jpetstore\domain\logic里面的java文件copy进去,在MANIFEST.MF里面把依赖包导入
三、DAO
该做dao部分了,创建一个 Plug-in project - org.phrancol.osgi.jpetstore.dao 并创建一个同名package,将jpetstore\src\org\springframework\samples\jpetstore\dao里面的东西全部copy进去,在MANIFEST.MF里面导入依赖包(有一些包需要导入成bundle,例如 spring-jdbc,spring-ibatis),启动看看,发现spring-ibatis和persistence没有启动,手动启动spring-ibatis,发现缺少ibatis,于是 New-> Other -> Plug-in from existing JAR archives ,导入ibatis,再启动,发现少 javax.transaction,于是用相同方法导入。
四、配置文件
关于spring的配置文件,只有3个
petstore-servlet.xml - 用于mvc的,定义dispatch bean
applicationContext.xml - 用于域逻辑的
dataAccessContext-local.xml - 用于DAO的,定义了DataSource
(一)dataAccessContext-local.xml
1,将 jdbc.properties和sql-map-config.xml拷贝到META-INF目录里,sql-map-config.xml里面的资源路径可能需要修改一下,maps里面的模型的class属性也需要改一下
2,在META-INF目录中创建一个目录spring,将dataAccessContext-local.xml拷贝进去,将applicationContext.xml里面的加载jdbc.properties的bean移植过来,放在DataSource的上面
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>META-INF/jdbc.properties</value>
</list>
</property>
</bean>
<property name="locations">
<list>
<value>META-INF/jdbc.properties</value>
</list>
</property>
</bean>
再把dataAccessContext-local.xml里面的dao-bean->class属性值修改一下,再把sqlMapClient的configLocation的值修改成META-INF/sql-map-config.xml,例如
<!-- SqlMap setup for iBATIS Database Layer -->
<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
<property name="configLocation" value="META-INF/sql-map-config.xml"/>
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- ========================= DAO DEFINITIONS: IBATIS IMPLEMENTATIONS ========================= -->
<bean id="accountDao" class="org.phrancol.sogi.jpetstore.dao.ibatis.SqlMapAccountDao">
<property name="sqlMapClient" ref="sqlMapClient"/>
</bean>
3,启动,报错,找不到ibatis的某个类,报错信息如下<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
<property name="configLocation" value="META-INF/sql-map-config.xml"/>
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- ========================= DAO DEFINITIONS: IBATIS IMPLEMENTATIONS ========================= -->
<bean id="accountDao" class="org.phrancol.sogi.jpetstore.dao.ibatis.SqlMapAccountDao">
<property name="sqlMapClient" ref="sqlMapClient"/>
</bean>
org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.orm.ibatis.SqlMapClientFactoryBean]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com.ibatis.sqlmap.engine.transaction.external.ExternalTransactionConfig
Caused by: java.lang.NoClassDefFoundError: com.ibatis.sqlmap.engine.transaction.external.ExternalTransactionConfig
at org.springframework.orm.ibatis.SqlMapClientFactoryBean.class$(SqlMapClientFactoryBean.java:72)
看来是spring-ibatis找不到com.ibatis.sqlmap.engine.transaction.external.ExternalTransactionConfig,来看看spring-ibatis的MANIFEST.MF,Dependencies的Import
Packages,
加上com.ibatis.sqlmap.engine.transaction.external,再启动,找不到DBCP,导入common-DBCP和common-pool,再启动,正常,SS一下,还是正常Caused by: java.lang.NoClassDefFoundError: com.ibatis.sqlmap.engine.transaction.external.ExternalTransactionConfig
at org.springframework.orm.ibatis.SqlMapClientFactoryBean.class$(SqlMapClientFactoryBean.java:72)
(二)applicationContext.xml
1,在org.phrancol.osgi.jpetstore.domain.logic的META-INF目录中创建一个目录spring,将applicationContext.xml拷贝进去,并改名为 logic-context.xml,删除propertyConfigurer这个bean,因为它已经被移到了dataAccessContext-local.xml里面,将里面的bean的class属性修改一下,启动,发现缺少org.aspectj,导入一个,再启动,报错
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'accountDao' is defined
无法找到
accountDao,accountDao被定义在org.phrancol.osgi.jpetstore.dao里面了,于是现在需要使用spring-osgi
来进行跨bundle的引用了。2,org.phrancol.osgi.jpetstore.dao/META-INF/spring目录中创建一个spring配置文件dataAccessContext-local-osgi.xml,使用<osgi:service>将accountDao和其他被引用的DAO注册成为OSGI Service
<?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:osgi="http://www.springframework.org/schema/osgi"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd">
<osgi:service id="accountDaoOsgi" ref="accountDao"
interface="org.phrancol.osgi.jpetstore.dao.AccountDao">
</osgi:service>
<osgi:service id="categoryDaoOsgi" ref="categoryDao"
interface="org.phrancol.osgi.jpetstore.dao.CategoryDao">
</osgi:service>
<osgi:service id="productDaoOsgi" ref="productDao"
interface="org.phrancol.osgi.jpetstore.dao.ProductDao">
</osgi:service>
<osgi:service id="itemDaoOsgi" ref="itemDao"
interface="org.phrancol.osgi.jpetstore.dao.ItemDao">
</osgi:service>
<osgi:service id="orderDaoOsgi" ref="orderDao"
interface="org.phrancol.osgi.jpetstore.dao.OrderDao">
</osgi:service>
</beans>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:osgi="http://www.springframework.org/schema/osgi"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd">
<osgi:service id="accountDaoOsgi" ref="accountDao"
interface="org.phrancol.osgi.jpetstore.dao.AccountDao">
</osgi:service>
<osgi:service id="categoryDaoOsgi" ref="categoryDao"
interface="org.phrancol.osgi.jpetstore.dao.CategoryDao">
</osgi:service>
<osgi:service id="productDaoOsgi" ref="productDao"
interface="org.phrancol.osgi.jpetstore.dao.ProductDao">
</osgi:service>
<osgi:service id="itemDaoOsgi" ref="itemDao"
interface="org.phrancol.osgi.jpetstore.dao.ItemDao">
</osgi:service>
<osgi:service id="orderDaoOsgi" ref="orderDao"
interface="org.phrancol.osgi.jpetstore.dao.OrderDao">
</osgi:service>
</beans>
3,在org.phrancol.osgi.jpetstore.domain.logic/META-INF/spring 也创建一个spring配置文件logic-context-osgi.xml,使用<osgi:reference>获取服务
<?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:osgi="http://www.springframework.org/schema/osgi"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd">
<osgi:reference id="accountDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.AccountDao"/>
<osgi:reference id="categoryDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.CategoryDao"/>
<osgi:reference id="productDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.ProductDao"/>
<osgi:reference id="itemDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.ItemDao"/>
<osgi:reference id="orderDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.OrderDao"/>
</beans>
将logic-context.xml里面的bean petStore的属性引用修改一下<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:osgi="http://www.springframework.org/schema/osgi"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd">
<osgi:reference id="accountDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.AccountDao"/>
<osgi:reference id="categoryDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.CategoryDao"/>
<osgi:reference id="productDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.ProductDao"/>
<osgi:reference id="itemDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.ItemDao"/>
<osgi:reference id="orderDaoOsgi" interface="org.phrancol.osgi.jpetstore.dao.OrderDao"/>
</beans>
<bean id="petStore" class="org.phrancol.osgi.jpetstore.domain.logic.PetStoreImpl">
<property name="accountDao" ref="accountDaoOsgi"/>
<property name="categoryDao" ref="categoryDaoOsgi"/>
<property name="productDao" ref="productDaoOsgi"/>
<property name="itemDao" ref="itemDaoOsgi"/>
<property name="orderDao" ref="orderDaoOsgi"/>
</bean>
再启动看看,还是报错<property name="accountDao" ref="accountDaoOsgi"/>
<property name="categoryDao" ref="categoryDaoOsgi"/>
<property name="productDao" ref="productDaoOsgi"/>
<property name="itemDao" ref="itemDaoOsgi"/>
<property name="orderDao" ref="orderDaoOsgi"/>
</bean>
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txAdvice': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'transactionManager' is defined
原来是transactionManager的问题,在DAO里面将transactionManager注册成osgi
service,在domain.logic里面引用,然后给txAdvice加上transaction-manager属性<tx:advice id="txAdvice" transaction-manager="transactionManagerOsgi">
<tx:attributes>
<tx:method name="insert*"/>
<tx:method name="update*"/>
<tx:method name="*" read-only="true"/>
</tx:attributes>
</tx:advice>
OK,启动,正常了<tx:attributes>
<tx:method name="insert*"/>
<tx:method name="update*"/>
<tx:method name="*" read-only="true"/>
</tx:attributes>
</tx:advice>
(三)petstore-servlet.xml
最后到spring-mvc的配置文件了,在前面已经将这个配置文件拷贝到org.phrancol.osgi.jpetstore.springmvc/META-INF/dispatcher目录下了,并且做了一些修改,让DispatcherServlet加载用以显示首页
1,新建一个package org.phrancol.osgi.jpetstore.springmvc.controller,将jpetstore\src\org\springframework\samples\jpetstore\web\spring里面的java文件拷贝进去,将依赖包导入,然后在petstore-servlet.xml里面加上一个dispatch-bean,
<bean name="/shop/addItemToCart.do" class="org.phrancol.osgi.jpetstore.springmvc.controller.AddItemToCartController">
<property name="petStore" ref="petStore"/>
</bean>
启动看看效果,报错<property name="petStore" ref="petStore"/>
</bean>
Caused by: java.lang.ClassNotFoundException: org.phrancol.osgi.jpetstore.springmvc.controller.AddItemToCartController
居然找不到这个类,来看看ClassLoaderThread.currentThread().getContextClassLoader() -> org.eclipse.core.runtime.internal.adaptor.ContextFinder
Activator's ClassLoader -> org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader
原来如此,那就这样Activator's ClassLoader -> org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader
Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader())
其实这样也是可以的,但是为了不绕弯路,而且既然是Spring的配置文件,Spring-osgi也提供得有Bundle的ClassLoader
->
org.springframework.osgi.context.support.BundleDelegatingClassLoader
交给Spring的ClassLoader吧2,看一段代码 org.springframework.osgi.context.support.BundleContextAwareProcessor
public boolean postProcessAfterInstantiation(Object bean, String beanName) throws BeansException {
if (bean instanceof BundleContextAware) {
if (this.bundleContext == null) {
throw new IllegalStateException("Cannot satisfy BundleContextAware for bean '" +
beanName + "' without BundleContext");
}
if (logger.isDebugEnabled()) {
logger.debug("Invoking setBundleContext on BundleContextAware bean '" + beanName + "'");
}
((BundleContextAware) bean).setBundleContext(this.bundleContext);
}
return true;
}
if (bean instanceof BundleContextAware) {
if (this.bundleContext == null) {
throw new IllegalStateException("Cannot satisfy BundleContextAware for bean '" +
beanName + "' without BundleContext");
}
if (logger.isDebugEnabled()) {
logger.debug("Invoking setBundleContext on BundleContextAware bean '" + beanName + "'");
}
((BundleContextAware) bean).setBundleContext(this.bundleContext);
}
return true;
}
3,再来看看这个接口org.springframework.osgi.context.BundleContextAware
Interface that enables beans to find the bundle context they are defined in. Note that in most circumstances there is no need for a bean to implement this interface.
OK,那就写个BundleContextAware,然后配置成Bean就可以了4,创建一个 Plug-in project org.phrancol.osgi.jpetstore.util,并创建同名package,新建一个Interface HttpServiceRegister 用于注册Servlet或Resource,这个过程在方法 public void serviceRegister(BundleContext context);里进行,新建一个Class BundleServiceRegister
public class BundleServiceRegister implements BundleContextAware {
private HttpServiceRegister httpServiceRegister;
public BundleServiceRegister(HttpServiceRegister httpServiceRegister){
this.httpServiceRegister = httpServiceRegister;
}
public void setBundleContext(BundleContext context) {
this.httpServiceRegister.serviceRegister(context);
}
}
private HttpServiceRegister httpServiceRegister;
public BundleServiceRegister(HttpServiceRegister httpServiceRegister){
this.httpServiceRegister = httpServiceRegister;
}
public void setBundleContext(BundleContext context) {
this.httpServiceRegister.serviceRegister(context);
}
}
5,生成一个类org.phrancol.osgi.jpetstore.springmvc.SpringmvcHttpServiceRegister implements HttpServiceRegister
将Activator.start方法里的内容拷贝到SpringmvcHttpServiceRegister.serviceRegister方法里,删除Activator(MANIFEST.MF)
6,在org.phrancol.osgi.jpetstore.springmvc/META-INF/下建立一个目录spring,从别的地方copy一个bean配置文件过来,改名为logic-context.xml,加入如下配置
<beans>
<bean id="springHttpServiceRegister"
class="org.phrancol.osgi.jpetstore.util.BundleServiceRegister">
<constructor-arg>
<bean class="org.phrancol.osgi.jpetstore.springmvc.SpringmvcHttpServiceRegister" />
</constructor-arg>
</bean>
</beans>
启动,报错,petstore-servlet.xml里面的bean
petStore
找不到,这个bean被定义在org.phrancol.osgi.jpetstore.domain.logic里面,于是使用<osgi:service>和<osgi:reference>来获取<bean id="springHttpServiceRegister"
class="org.phrancol.osgi.jpetstore.util.BundleServiceRegister">
<constructor-arg>
<bean class="org.phrancol.osgi.jpetstore.springmvc.SpringmvcHttpServiceRegister" />
</constructor-arg>
</bean>
</beans>
在logic-context-osgi.xml里面加上
<osgi:service id="petStoreOsgi" ref="petStore"
interface="org.phrancol.osgi.jpetstore.domain.logic.PetStoreFacade">
</osgi:service>
在springmvc-context.xml加入如下内容(注意namespaces)interface="org.phrancol.osgi.jpetstore.domain.logic.PetStoreFacade">
</osgi:service>
<osgi:reference id="petStoreOsgi"
interface="org.phrancol.osgi.jpetstore.domain.logic.PetStoreFacade" />
修改一下petstore-servlet.xmlinterface="org.phrancol.osgi.jpetstore.domain.logic.PetStoreFacade" />
<property name="petStore" ref="petStore"/>
改成
<property name="petStore" ref="petStoreOsgi"/>
OK,这次应该没问题了,启动看看效果,还是报错改成
<property name="petStore" ref="petStoreOsgi"/>
org.springframework.beans.factory.BeanCreationException: Error creating bean with name '/shop/addItemToCart.do' defined in ServletContext resource [/META-INF/dispatcher/petstore-servlet.xml]: Cannot resolve reference to bean 'petStoreOsgi' while setting bean property 'petStore'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'petStoreOsgi' is defined
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'petStoreOsgi' is defined
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:353)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:916)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:243)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:261)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:109)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1100)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'petStoreOsgi' is defined
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:353)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:916)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:243)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:261)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:109)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1100)
居然找不到petStoreOsgi这个bean......
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