体验 SpringSource DM Server
前言

SpringSource?dm Server??is a completely modular,OSGi-based Java server designed to run enterprise Java applications andSpring-powered applications with a new degree of flexibility andreliability. The SpringSource?dm Server?is based on the newSpringSource Dynamic Module Kernel? (dm Kernel). The dm Kernel providesa module-based backbone for the server, which also harnesses the powerof Spring, Apache Tomcat and OSGi-based technologies.

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SpringSource宣布dmServer发布，版本为1.0.0GA。这是一个完全模块化部署的，基于OSGi的Java服务器，为运行企业Java应用和Spring应用提供更加强大的灵活性和可靠性。SpringSource应用平台是构建在Spring、OSGi和ApacheTomcat之上的应用服务器，这个新的应用服务器摒弃了原有的JavaEE服务器标准，自然而然地将Spring编程模型展现其中，随之而来的还有一套基于OSGi内核构建的全新部署和打包系统。

详情点击：http://www.springsource.com/node/597

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正文

今天在javaeye看到了SpringSource dm Server GA版本正式发布的消息，使得原本就对OSGi很好奇的我一下子又来了兴趣，立即去SpringSource下载SpringSource DM Server来体验。

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按导航一路点击，进入到下载页面，发现binary版本居然下载不了，汗～ 无奈只能下载source。

然后开始build。按readme.txt上的说明cd to the build-dm-server directory，run 'ant' to build the dm Server binary ZIP file containing a runnable version of the server. 构建是使用ant来做的，首先ivy会下载了一大堆依赖的jar，这个过程可能会比较漫长（视网络连接速度而定），期间或许你可以去睡一觉。

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很快问题来了，说是一些java文件里有一些字符串没有正确使用“"”括起来。根据以往经验，我怀疑是javac使用平台默认的编码（我的是windows xp 中文版，那么应该就是GBK/GB18030），和java源代码中使用的编码（后经证实是UTF-8）不兼容造成的。于是修改了spring-build目录下相关build.xml里s:javac task的属性，增加了encoding="UTF-8"。重新build，问题解决。

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接下来又是漫长的等待，整个编译过程接近半小时（没算下载依赖jar的时间）。漫长等待之后，终于完成了。

[...]zip-server:      [zip] Building zip: F:\springsource-dm-server-sources-1.0.0.RELEASE\build-dm-server\target\artifacts\springsource-dm-server-1.0.0.BUILD-20081111081700.zipdist:BUILD SUCCESSFULTotal time: 23 minutes 20 seconds

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OK, cd %SERVER_HOME%，run bin\startup.bat

很不幸，问题又来了

main                     <SPKB0002E> Start failed:com.springsource.server.osgi.framework.OsgiFrameworkException: Failed to start bundle 'com.springsource.javax.servlet.jsp.jstl'at com.springsource.server.osgi.framework.equinox.EquinoxBundleInstaller.startBundle(EquinoxBundleInstaller.java:378)at com.springsource.server.osgi.framework.equinox.EquinoxBundleInstaller.doInstallBundle(EquinoxBundleInstaller.java:123)at com.springsource.server.osgi.framework.support.AbstractBundleInstaller.installBundleFromLocation(AbstractBundleInstaller.java:170)at com.springsource.server.osgi.framework.support.AbstractBundleInstaller.installBundleFromDefinition(AbstractBundleInstaller.java:242)at com.springsource.server.osgi.framework.support.AbstractBundleInstaller.installBundle(AbstractBundleInstaller.java:137)at com.springsource.server.osgi.framework.support.AbstractBundleInstaller.installBundle(AbstractBundleInstaller.java:109)at com.springsource.server.kernel.bootstrap.KernelBootstrap.start(KernelBootstrap.java:73)at com.springsource.server.kernel.bootstrap.Bootstrap.main(Bootstrap.java:73)Caused by: org.osgi.framework.BundleException: The bundle could not be resolved. Reason: Missing Constraint: Import-Package: javax.servlet.jsp; version="[2.1.0,3.0.0)"at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:305)at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:265)at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:257)at com.springsource.server.osgi.framework.equinox.EquinoxBundleInstaller.startBundle(EquinoxBundleInstaller.java:376)... 7 more

?这次我束手无策了，毕竟对OSGi的了解太少了。

无奈之下，来到Spring Community Forums寻求帮助。无独有偶，居然让我看到另一个哥们遇到了和我同样的问题，并已经得到高人的解答～～ 哈哈，真是好消息！

http://forum.springframework.org/showthread.php?t=62844

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按照上面所述解决方法，做了相应修改以后，开始rebuild。又是漫长的等待。。。

zip-server:      [zip] Building zip: F:\springsource-dm-server-sources-1.0.0.RELEASE\build-dm-server\target\artifacts\springsource-dm-server-1.0.0.BUILD-20081111115944.zipdist:BUILD SUCCESSFULTotal time: 13 minutes 40 seconds

?这次终于ok了～～

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困了。。。 先写到这里吧。

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To be continued...

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binary下载

鉴于从源码build不是很顺利，故这里提供build好的binary版本下载

springsource-dm-server-1.0.0.BUILD-20081111115944.zip? 14.6 MB

SHA1 Checksum: e24ded0ca5a20e3e8e91fd991d3a51d610ee0e73

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参考资料/相关文档DocumentationUser Guide (HTML / HTML-Single / PDF)Programmer Guide (HTML / HTML-Single / PDF)SpringSource dm Server BlogsAdditional ResourcesProduct Home PageCommunity Discussion ForumsWebinar RecordingsNext Generation Web-Entwicklung mit dem SpringSource dm Server? (German) - SlidesBuilding Web Applications for SpringSource Application Platform - SlidesIntroduction to SpringSource Application Platform