但这样安装起来就存在麻烦,还要执行perl Makefile.pl之类的

怎么样可以找到相应的rpm包呢

cpan2rpm 解决了这个问题,它可以帮你获的你想要的rpm包(并不是全部)

具体可以查看cpan的主页 http://perl.arix.com/cpan2rpm/

This script generates an RPM package from a Perl module. It uses the standard RPM file structure and creates a spec file, a source RPM, and a binary, leaving these in their respective directories.

The script can operate on local files, directories, urls and CPAN module names. Install this package if you want to create RPMs out of Perl modules.

The syntax for cpan2rpm supports multiple distribution names, which can take one of four different forms:

1. a CPAN module name (e.g. XML::Simple) - When a module name is passed, the script will ``walk'' search.cpan.org to determine the latest distribution. If an exact match is not found, the CPAN module is used to make this determination. If you have not yet configured this module, please refer to the REQUIREMENTS section below for further instructions.
   
2. a URL (both http:// and ftp:// style locators will work) - In this and the above case, an automatic download of the needed tarball is performed (see notes for how). The tarball is deposited in the SOURCES directory.
   
3. a path to a tarball (e.g. /tmp/XML-Simple-1.05.tar.gz) - In this case, the tarball indicated gets copied to the SOURCES directory.
   
4. a directory path - The directory specified must contain a Makefile.PL. If the user intends to build a package from a directory (i.e. user does NOT specify --spec-only), the commands:
   

       perl Makefile.PL
       make
       make dist

   will be performed in that directory in order to create the tarball necessary for package creation.

不过我还没试验成功从一个tar.gz转换成rpm格式,我发现如果cpan上有对应的rpm包就可以获得,

没有就提示出没有了

同时这里还提供了web 接口,你可以不需要安装cpan2rpm直接获取

注:很多网上说这样使用.但我发现却不能成功

   cpan2rpm Proc-Daemon-0.03.tar.gz

-- cpan2rpm - Ver: 2.028 --
Upgrade check
Fetch: HTTP

-- module: Proc-Daemon-0.03.tar.gz --
tarball: No such file or directory at ./cpan2rpm line 1230.
-- Done --

这样用却可以

 cpan2rpm  Proc::Daemon

或者

 cpan2rpm http://.../Proc-Daemon-0.03.tar.gz

不过有一些还是没有rpm包

二 环境变量设置
  一般步骤可参照网上
  这里,我是这样使用的
 
   拷贝%hibernate_Home%\lib*.jar到%MiddleGen%\lib
   拷贝%hibernate_Home%\hibernate2.jar到%MiddleGen%\lib
   拷贝%hibernate-extension_Home%\tools\lib*.jar到%MiddleGen%\lib
   拷贝%hibernate-extension_Home%\tools\hibernate-tools.jar到%MiddleGen%\lib

三 MiddleGen的配置
    配置目标数据库参数
进入MiddleGen 目录下的\config\database 子目录，根据我们实际采用的数据库打开
对应的配置文件。如这里我们用的是mysql数据库，对应的就是mysql.xml文件。
<property name="database.script.file" value="${src.dir}/sql/${name}-mysql.sql"/>
<property name="database.driver.file" value="${lib.dir}/mysql.jar"/>
<property name="database.driver.classpath" value="${database.driver.file}"/>
<property name="database.driver" value="org.gjt.mm.mysql.Driver"/>
<property name="database.url" value="jdbc:mysql://localhost/sample"/>
<property name="database.userid" value="user"/>
<property name="database.password" value="mypass"/>
<property name="database.schema" value=""/>
<property name="database.catalog" value=""/>
<property name="jboss.datasource.mapping" value="mySQL"/>

3) 修改Build.xml
修改MiddleGen 根目录下的build.xml 文件，此文件是Middlegen-Hibernate 的Ant
构建配置。Middlegen-Hibernate将根据build.xml文件中的具体参数生成数据库表映射
文件。可配置的项目包括：
a) 目标数据库配置文件地址
查找关键字 ”!ENTITY”，得到：
<!DOCTYPE project [
<!ENTITY database SYSTEM
"file:./config/database/hsqldb.xml">
]>
默认情况下，MiddleGen 采用的是hsqldb.xml，将其修改为我们所用的数据
库配置文件（mysql.xml）：
<!DOCTYPE project [
<!ENTITY database SYSTEM
"file:./config/database/mysql.xml">
]>
b) Application name
查找：
<property name="name" value="airline"/>
“aireline”是MiddleGen原始配置中默认的 Application Name，将其修改为我们
所希望的名称，如“HibernateSample”：
<property name="name" value="HibernateSample"/>
c) 输出目录
查找关键字“name="build.gen-src.dir"”，得到：
<property name="build.gen-src.dir"
value="${build.dir}/gen-src"/>
修改value="${build.dir}/gen-src"使其指向我们所期望的输出目录，
这里我们修改为：
<property name="build.gen-src.dir"
value="C:\sample"/>
d) 对应代码的Package name
查找关键字“destination”，得到：
<hibernate
destination="${build.gen-src.dir}"
package="${name}.hibernate"
genXDocletTags="false"
genIntergratedCompositeKeys="false"
javaTypeMapper=
"middlegen.plugins.hibernate.HibernateJavaTypeMapper"
/>
可以看到，hibernate 节点package 属性的默认设置实际上是由前面的
Application Name （${name}）和“.hibernate”组合而成，根据我们的需要，
将其改为：
<hibernate
destination="${build.gen-src.dir}"
package="org.hibernate.sample"
genXDocletTags="true"
genIntergratedCompositeKeys="false"
javaTypeMapper=
"middlegen.plugins.hibernate.HibernateJavaTypeMapper"
/>
这里还有一个属性genXDocletTags，如果设置为true，则生成的代码将包含
xdoclet tag，这为以后在开发过程中借助xdoclet进行映射调整提供了帮助

至此为止，MiddleGen 已经配置完毕，在MiddleGen 根目录下运行ant，就将出现
MiddleGen的界面：

四 .xml到.java
   在得到.xml后,使用ant hbm2java 即可得到相应的java文件

总结:
  我第一次运行成功,但是后来则出现类似错误,检查发现在MiddleGen的lib目录下存在多个类似的jar包
(velocity.jar,velocity***.jar),删除旧的jar包后,问题解决

[middlegen] java.lang.IncompatibleClassChangeError
[middlegen]     at middlegen.KindFileResourceLoader.getResourceStream(KindFileRe
sourceLoader.java:82)
[middlegen]     at org.apache.velocity.Template.process(Template.java:136)
[middlegen]     at org.apache.velocity.runtime.resource.ResourceManagerImpl.load
Resource(ResourceManagerImpl.java:466)
[middlegen]     at org.apache.velocity.runtime.resource.ResourceManagerImpl.getR
esource(ResourceManagerImpl.java:384)
[middlegen]     at org.apache.velocity.runtime.RuntimeInstance.getTemplate(Runti
meInstance.java:814)
[middlegen]     at org.apache.velocity.runtime.RuntimeInstance.getTemplate(Runti
meInstance.java:796)
[middlegen]     at org.apache.velocity.runtime.VelocimacroFactory.initVelocimacr
o(VelocimacroFactory.java:211)
[middlegen]     at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInsta
nce.java:276)
[middlegen]     at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInsta
nce.java:441)
[middlegen]     at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.ja
va:148)
[middlegen]     at middlegen.Plugin.getEngine(Plugin.java:560)
[middlegen]     at middlegen.Plugin.generate(Plugin.java:444)
[middlegen]     at middlegen.Middlegen.writeSource(Middlegen.java:411)
[middlegen]     at middlegen.swing.JMiddlegenFrame$1.actionPerformed(JMiddlegenF
rame.java:72)
[middlegen]     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton
.java:1786)
[middlegen]     at javax.swing.AbstractButton$ForwardActionEvents.actionPerforme
d(AbstractButton.java:1839)
[middlegen]     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultBut
tonModel.java:420)
[middlegen]     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.
java:258)
[middlegen]     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Basi
cButtonListener.java:245)
[middlegen]     at java.awt.Component.processMouseEvent(Component.java:5100)
[middlegen]     at java.awt.Component.processEvent(Component.java:4897)
[middlegen]     at java.awt.Container.processEvent(Container.java:1569)
[middlegen]     at java.awt.Component.dispatchEventImpl(Component.java:3615)
[middlegen]     at java.awt.Container.dispatchEventImpl(Container.java:1627)
[middlegen]     at java.awt.Component.dispatchEvent(Component.java:3477)
[middlegen]     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.j
ava:3483)
[middlegen]     at java.awt.LightweightDispatcher.processMouseEvent(Container.ja
va:3198)
[middlegen]     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3
128)
[middlegen]     at java.awt.Container.dispatchEventImpl(Container.java:1613)
[middlegen]     at java.awt.Window.dispatchEventImpl(Window.java:1606)
[middlegen]     at java.awt.Component.dispatchEvent(Component.java:3477)
[middlegen]     at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
[middlegen]     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDi
spatchThread.java:201)
[middlegen]     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDisp
atchThread.java:151)
[middlegen]     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.j
ava:145)
[middlegen]     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.j
ava:137)
[middlegen]     at java.awt.EventDispatchThread.run(EventDispatchThread.java:100
)