Spring In Action

update 2016.8.12 使用freemarker模板引擎

2016.3.31 阅读《Spring实战3rd》

之前间歇的阅读过，但是只是停留在理解的层面上，想要把每个例子跑通也需要一定的折腾。

注：每个示例都是一个单独的Maven Project。

2016.7.12 update

集成mybatis
Spring集成JUnit单元测试 spitter-persistence-mybatis
从Spring MVC中返回json，spitter-web中SpitterController

1. Spring之旅

依赖注入
AOP
bean的初始化过程
spring容器
Spring还有很多值得学习的框架，如安全

跑起来√ knights

2. 装配Bean

“initialization on demand holder”创建单例模式的理解,参考 Initialization-on-demand holder idiom
Spring中单例的概念限于Spring上下文中，遵守约定
内部bean适用于setter注入和构造器注入，内部bean不能被复用
SpEL表达式

跑起来√ springidol

3. 最小化Spring XML配置

4 种自动装配 byName, byType, contructor, autodetect
可以在一个应用上下文中定义多个配置文件，每个配置文件设置自己的默认自动装配策略(default-autowire)
如果使用constructor自动装配策略，就不能混合使用constructor-arg
注解方式可以实现更细粒度的自动装配，Spring容器默认禁用注解装配，要在配置文件中开启
<context:component-scan> 配置自动扫描
在基于Java的配置中使用@Configuration注解的Java类，等价于XML配置中的<beans>元素

跑起来√ springidol-autodiscovery

4. 面向切面Spring

Spring只支持方法连接点
体会切面的应用场景
before, after, around advice
为advice传递参数
introduction为已有的接口引入新接口
at aspect

跑起来√ springidol-aop

跑起来√ springidol-aspectj

5. 征服数据库

Spring在数据访问层使用模板方法设计模式，模板template管理数据访问过程中固定的部分，回调callback处理自定义的数据访问细节
想要控制的越多就越复杂，更多的冗余逻辑，tradeoff
使用MySQL数据库
体会各种持久化方法的使用

跑起来√ spitter-persistence-jdbc-conventional

跑起来√ spitter-persistence-jdbc-template

跑起来√ spitter-persistence-hibernate-contextual-session

跑起来√ spitter-persistence-jpa

6. 事务管理

事务的ACID特性
编码式 vs 声明式事务在细粒度和易用性之间的权衡
Spring为每种场景定义了事务管理器（TransactionManager），底层是特定的事务实现
要理解JDBC事务，Hibernate事务幕后的实现
声明式事务的5个属性：传播行为，隔离级别，只读，超时，回滚规则

跑起来√ spitter-service-declarative-tx

跑起来√ spitter-service-programmatic-tx

7. 使用Spring MVC构建Web应用程序

一个问题的记录，如下，解决方法把Spitter配置文件中的lazy设置为false，还有待好好理解，参考。

org.hibernate.LazyInitializationException: could not initialize proxy - no Session
	org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:148)
	org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:266)
	org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:68)
	com.vonzhou.spitter.persistence.Spitter_$$_jvst34e_0.getUsername(Spitter_$$_jvst34e_0.java)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:497)
	javax.el.BeanELResolver.getValue(BeanELResolver.java:97)
	org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:110)
	org.apache.el.parser.AstValue.getValue(AstValue.java:169)
	org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
	org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:943)
	ohrg.apache.jsp.WEB_002dINF.views.home_jsp._jspx_meth_s_005fparam_005f0(home_jsp.java:317)
	org.apache.jsp.WEB_002dINF.views.home_jsp._jspx_meth_s_005furl_005f0(home_jsp.java:283)
	org.apache.jsp.WEB_002dINF.views.home_jsp._jspx_meth_c_005fforEach_005f0(home_jsp.java:208)
	org.apache.jsp.WEB_002dINF.views.home_jsp._jspService(home_jsp.java:155)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

表单验证效果：

一个问题的记录，如下，根据日志输出大概可以看出在equals，hashCode方法的地方，所以要正确的override，可以使用Commons lang。

javax.validation.ValidationException: HV000041: Call to TraversableResolver.isReachable() threw an exception.
	org.hibernate.validator.internal.engine.ValidatorImpl.isReachable(ValidatorImpl.java:1531)
	org.hibernate.validator.internal.engine.ValidatorImpl.isValidationRequired(ValidatorImpl.java:1507)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateMetaConstraint(ValidatorImpl.java:584)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:555)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:490)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:454)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:406)
	org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:204)
	org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:108)
	org.springframework.validation.DataBinder.validate(DataBinder.java:866)
	org.springframework.web.method.annotation.ModelAttributeMethodProcessor.validateIfApplicable(ModelAttributeMethodProcessor.java:164)
	org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:111)
	org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:99)
	org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:161)
	org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128)
	org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)
	org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
	org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause

java.lang.NullPointerException
	com.vonzhou.spitter.persistence.Spitter.equals(Spitter.java:100)
	org.hibernate.validator.internal.engine.resolver.CachingTraversableResolverForSingleValidation$TraversableHolder.equals(CachingTraversableResolverForSingleValidation.java:127)
	java.util.HashMap.getNode(HashMap.java:571)
	java.util.HashMap.get(HashMap.java:556)
	org.hibernate.validator.internal.engine.resolver.CachingTraversableResolverForSingleValidation.isReachable(CachingTraversableResolverForSingleValidation.java:34)
	org.hibernate.validator.internal.engine.ValidatorImpl.isReachable(ValidatorImpl.java:1522)
	org.hibernate.validator.internal.engine.ValidatorImpl.isValidationRequired(ValidatorImpl.java:1507)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateMetaConstraint(ValidatorImpl.java:584)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:555)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:490)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:454)
	org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:406)
	org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:204)
	org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:108)
	org.springframework.validation.DataBinder.validate(DataBinder.java:866)
	org.springframework.web.method.annotation.ModelAttributeMethodProcessor.validateIfApplicable(ModelAttributeMethodProcessor.java:164)
	org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:111)
	org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:99)
	org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:161)
	org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128)
	org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)
	org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
	org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

一个问题的记录，如下，要加入依赖commons fileupload(为何？？), 然后配置文件加入multipartResolver bean.

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalArgumentException: Expected MultipartHttpServletRequest: is a MultipartResolver configured?
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:980)
	org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

一个问题的记录，部署错误，折腾了如何在intellij中配置日志路径，但是没有看到日志在哪儿。采用另一个方法，把项目手动放到tomcat的webapps下面，然后run，出错后，会在其logs下面生成日志，然后去阅读，然后我通过阅读日志发现出的错误和数据库相关，才意识到MySQL么有启动。

参阅学习：

http://blogs.sourceallies.com/2011/08/spring-injection-with-resource-and-autowired/

Apache Tiles

Chapter 15. Criteria Queries

application/x-www-form-urlencoded or multipart/form-data?

了解 HSL 语法

Commons IO

What issues should be considered when overriding equals and hashCode in Java?

跑起来√spitter-web

8. Spring Web Flow使用

错误如下，关键在于var要在input之前，input之后就开始各种状态了。

org.xml.sax.SAXParseException; lineNumber: 8; columnNumber: 96; cvc-complex-type.2.4.a: 发现了以元素 'var' 开头的无效内容。应以 '{"http://www.springframework.org/schema/webflow":input, "http://www.springframework.org/schema/webflow":on-start, "http://www.springframework.org/schema/webflow":action-state, "http://www.springframework.org/schema/webflow":view-state, "http://www.springframework.org/schema/webflow":decision-state, "http://www.springframework.org/schema/webflow":subflow-state, "http://www.springframework.org/schema/webflow":end-state, "http://www.springframework.org/schema/webflow":global-transitions, "http://www.springframework.org/schema/webflow":on-end, "http://www.springframework.org/schema/webflow":output, "http://www.springframework.org/schema/webflow":exception-handler, "http://www.springframework.org/schema/webflow":bean-import}' 之一开头。
	com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
	com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
	com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
	com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
	com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
	com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:452)

参阅学习：

Spring Web Flow官网
spring-webflow-samples
Spring Web Flow 2.0 入门，代码CartApp
What's the difference between @Component, @Repository & @Service annotations in Spring?
JSPX 和 JSP 的区别

跑起来√ Spizza

9. 保护Spring应用

登录表单的提交action的url要和security配置中form-login的login-processing-url对应起来，否则谁知道怎么处理
关于CSRF的一点总结，首先要在form里面配置一个csrf的隐藏域因为Spring默认开启了csrf防护，否则Invalid CSRF Token 'null' was found on the request parameter '_csrf' or header 'X-CSRF-TOKEN'.
注意login表单中的用户名和密码input的name不能是默认的j_username, 发生了Invalid CSRF Token的问题，我不知道为何。书中的代码怎么通过的？我在这里迷失了很久！解决的方法就是在security配置中的form-login中显示的指定username-parameter="username", password-parameter="password". login.jsp中保持和这里的一致。
书中对该框架的讲解只是抛砖引玉，需要自己深入学习

一个问题的记录，当security配置文件中配置两个access ROLE的时候就会出现重定向次数太多的错误，对应这种场景必定有解决方法，这里先配置一种ROLE。

参阅学习：

跑起来√ spitter-web-security

10. 使用远程服务

先要保证不用Spring的时候这些RPC的基本使用和原理，否则框架会蒙蔽你的脑子
在阅读Oracle的rmi文档的时候，感觉很爽啊，有时间多看看这些原汁原味的文档，收获自然不菲
java -cp 参数的多个路径用冒号分隔，. 代码当前目录
实现一个简单的RMI示例，Java RMI tutorial没有跑通。如果出现LocateRegistry.createRegistry()绑定默认的1099端口失败，那么就先杀死他，然后启动rmiregistry，如下：

简单示例GreetingService中, 通过rmi 方法调用返回的是String对象,String显然实现了java.io.java.io.Serializable，在这里问题UnmarshalException->NotSerializableException就出现在远程方法调用返回的是Spitter对象,所以就要牵扯到对象从RMI server传输到本地,所以Spitter要实现Serializable
根据出现的 UnmarshalException 的 ClassNotFoundException 的类的包名，还可以发现一个问题， Spitter对象是在远程获得的，所以需要load到本地，所以包名也要一致，否则就属于不同的Spitter啊。
纯粹的使用Hessian, 然后整合到Spring中示例 hello-hessian-spring 。Spring 并没有做更多的简化，只是集成。

参阅学习：

跑起来√ spitter-remoting-rmi

跑起来√ hello-hessian 整合到Spring中, hello-hessian-spring, hello-hessian-spring-client。

跑起来√ hello-httpinvoker

11. 为Spring添加REST功能

理解REST的基本哲学
处理RESTful的URL，写对应的控制器
HTTP各种方法的理解
使用RestTemplate
编写REST客户端，以及HttpMessageConverter对客户端的适应
component-scan中的多个package使用逗号分隔
Fuck, 以后尽量手动的mvn clean pakcage，然后用IDE部署运行，否则有些问题。

跑起来√ spitter-web-rest

12. Spring消息

之前在阿里实习的时候，对RocketMQ有过较为深入的阅读
ActiveMQ的使用，先要下载，启动broker，作为消息生产者消费者之间的代理

This class is not trusted to be serialized as ObjectMessage payload. 使用ObjectMessage的时候需要设置信任的package

Caused by: java.lang.ClassNotFoundException: Forbidden class org.springframework.remoting.support.RemoteInvocation! This class is not trusted to be serialized as ObjectMessage payload. Please take a look at http://activemq.apache.org/objectmessage.html for more information on how to configure trusted classes.
	at org.apache.activemq.util.ClassLoadingAwareObjectInputStream.checkSecurity(ClassLoadingAwareObjectInputStream.java:112)
	at org.apache.activemq.util.ClassLoadingAwareObjectInputStream.resolveClass(ClassLoadingAwareObjectInputStream.java:57)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
	at org.apache.activemq.command.ActiveMQObjectMessage.getObject(ActiveMQObjectMessage.java:206)
	... 14 more

简单起见设置为：

System.setProperty("org.apache.activemq.SERIALIZABLE_PACKAGES","*");

参阅学习：

ActiveMQ ObjectMessage

跑起来√ messaging

13. 将Spring Bean导出为MBean

前提是理解JMX，看文档

14. 其他Spring技巧

将一些需要修改的配置细节外部化一个单独的配置文件，系统文件，或环境变量中
JavaMailSender
调度任务

迷失

Spring旅程才刚刚开始！

vonzhou 2016.4.26

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Repository files navigation

Spring In Action

1. Spring之旅

2. 装配Bean

3. 最小化Spring XML配置

4. 面向切面Spring

5. 征服数据库

6. 事务管理

7. 使用Spring MVC构建Web应用程序

8. Spring Web Flow使用

9. 保护Spring应用

10. 使用远程服务

11. 为Spring添加REST功能

12. Spring消息

13. 将Spring Bean导出为MBean

14. 其他Spring技巧

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Name		Name	Last commit message	Last commit date
Latest commit History 27 Commits
.idea		.idea
CartApp		CartApp
SpringPizza		SpringPizza
compute-client-server		compute-client-server
freemarker-example		freemarker-example
hello-hessian-spring-client		hello-hessian-spring-client
hello-hessian-spring		hello-hessian-spring
hello-hessian		hello-hessian
hello-httpinvoker		hello-httpinvoker
knights		knights
messaging		messaging
output		output
rmidemo		rmidemo
spitter-persistence-hibernate-contextual-session		spitter-persistence-hibernate-contextual-session
spitter-persistence-jdbc-conventional		spitter-persistence-jdbc-conventional
spitter-persistence-jdbc-template		spitter-persistence-jdbc-template
spitter-persistence-jpa		spitter-persistence-jpa
spitter-persistence-mybatis		spitter-persistence-mybatis
spitter-remoting-client		spitter-remoting-client
spitter-remoting-httpinvoker		spitter-remoting-httpinvoker
spitter-remoting-rmi		spitter-remoting-rmi
spitter-service-declarative-tx		spitter-service-declarative-tx
spitter-service-programmatic-tx		spitter-service-programmatic-tx
spitter-web-aop		spitter-web-aop
spitter-web-aop2		spitter-web-aop2
spitter-web-rest		spitter-web-rest
spitter-web-security		spitter-web-security
spitter-web		spitter-web
spring-freemarker-example		spring-freemarker-example
spring-interceptor		spring-interceptor
spring-project-empty		spring-project-empty
spring-security-demo		spring-security-demo
springidol-aop		springidol-aop
springidol-aspectj		springidol-aspectj
springidol-autodiscovery		springidol-autodiscovery
springidol		springidol
springinternals		springinternals
.gitignore		.gitignore
README.md		README.md
activemq-start.jpg		activemq-start.jpg
deploy-error.jpg		deploy-error.jpg
form-valid.jpg		form-valid.jpg
lost.jpg		lost.jpg
pom.xml		pom.xml
too-many-redirects.jpg		too-many-redirects.jpg

vonzhou/SpringInAction3

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Spring In Action

1. Spring之旅

2. 装配Bean

3. 最小化Spring XML配置

4. 面向切面Spring

5. 征服数据库

6. 事务管理

7. 使用Spring MVC构建Web应用程序

8. Spring Web Flow使用

9. 保护Spring应用

10. 使用远程服务

11. 为Spring添加REST功能

12. Spring消息

13. 将Spring Bean导出为MBean

14. 其他Spring技巧

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