领先一步
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了解更多欢迎阅读本期《本周 Spring 动态》。随着下周VMworld 2011的临近,一切都在快速发展。我邀请所有与会者访问 VMWorld Spring 展台,与我们的专家技术人员见面。如果您阅读了这份每周综述,请告诉我。本周有很多话题要讨论,让我们开始吧!
<li>The preliminary session schedule has been published for <a href="http://www.springone2gx.com">SpringOne 2GX 2011</a>. This year's show is going to be another fantastic mix of deep technical content, cutting edge development and the absolute best place to learn about everything in the Spring universe. Be sure to <a href="http://springone2gx.com/conference/chicago/2011/10/register">register now</a>!</li>
<LI> <a href="http://static.springsource.org/spring/docs/3.0.6.RELEASE/changelog.txt">Spring 3.0.6's was just released!</a>
This release addresses over 50 minor issues and includes about a dozen small improvements. Be sure to read the <a href="http://static.springsource.org/spring/docs/3.0.6.RELEASE/changelog.txt">Change Log</a> for all the details and <a href="http://www.springsource.com/download/community?project=Spring%20Framework&version=3.0.6.RELEASE">download</a> the bits as soon as possible.
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<LI> <a href="http://www.springsource.org/node/3208">Spring Data Graph 1.1.0 with Neo4j support</a> has just been released. The new version features improved support for the latest and greatest Neo4j iteration, (1.4.1), as well as improved support for queries. You can now build repositories using Spring Data Graph with much greater ease. Also, the project's been renamed to reflect its core focus, Neo4j, thus, this will be the <EM> Spring Data Neo4j</EM> project, going forward. This rename is already evident in the packages in the project.
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I like <a href="http://www.cloudfoundry.org">CloudFoundry.</a> Others may not be using CloudFoundry, as it is relatively new. Some might still be using Google App Engine, for example. And that's OK. Spring always has been, and will continue to be, about portability and choice. So it is great to see a post that demonstrates <a href="http://www.springsource.org/node/3207">it is easy to get Spring Roo applications running on Google App Engine</a>, too! </LI>
singleton
概念的金科玉律:仅对那些不需要特定于客户端状态的 Bean 使用单例。虽然他提出的金科玉律略有不同,但我认为这种区别很重要。Spring Bean 本身可以维护状态,但它们必须保护该状态免受多个(通常是并发)客户端的修改。A lot of times, too, Spring lets you work as though you have client-specific state, but are in fact using a singleton. An example of this is in the way Spring supports injection of the JPA <CODE>EntityManager</CODE>, which is <EM>not</EM> thread-safe. Spring intercepts calls to the EntityManager proxy that's injected and then, in a thread-local, creates an EntityManager so that each request <em>effectively</em> has client-specific state, but they can program in terms of single-threaded access.
也就是说,这篇文章非常值得一读。
closeMethod
,用于加快关闭 JNDI 资源的速度,否则这些资源将在垃圾回收期间关闭。
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<LI> This <a href="http://www.ibm.com/developerworks/web/library/x-springandroid/index.html">post</A> by Deepak Vohra on IBM's DeveloperWorks has some great information on using Spring Android's <CODE>RestTemplate</CODE> support to consume RESTful web services (which, in this example, were developed using JAX-RS). Interoperability is king, and Spring's REST support makes it easy.
<LI><a href="http://www.dzone.com/links/r/spring_integration_with_mvc_freemarker_jsp_webser.html">This fantastic post covers using FreeMarker</a> (via the <CODE>org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver</CODE> view resolver) for Spring MVC views</a>. I like FreeMarker, and it has a lot to offer compared to straight <CODE>JSP</CODE> (and even compared to straight <CODE>JSPX</CODE>!) The take away, for me, is that Spring MVC supports lots of options, and provides SPIs that make it very simple to integrate new technology for each of the core pieces of the integration.
很棒的内容!
<LI> Blogger Mkyong has posted a tutorial <a href="http://www.mkyong.com/spring-security/spring-security-hello-world-example">introducing how to use Spring Security 3.</a>
The tutorial covers the basics of setting up Spring Security 3 with Maven 3 for a simple web application login scenario.
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<a href="http://www.tomcatexpert.com/blog/2011/08/19/apache-tomcat-6033-released">Apache Tomcat 6.0.33 has been released!</a>
Apache Tomcat 6.0.33 is primarily a security and bug fix release. All users of older versions of the Tomcat 6.0 family should upgrade to 6.0.33.
Note that is version has 4 zip binaries: a generic one and three bundled with Tomcat native binaries for different CPU architectures.
Apache Tomcat 6.0 includes new features over Apache Tomcat 5.5, including support for the new Servlet 2.5 and JSP 2.1 specifications, a refactored clustering implementation, advanced IO features, and improvements in memory usage.
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