Tomcat和Eclipse Zero Turnaround部署 [英] Tomcat and Eclipse Zero Turnaround Deployment

问题描述

到目前为止，我有我的输出Eclipse将内置的类放在我的Web应用程序的 WEB-INF / classes 文件夹中。

我也有一个可重新上载的上下文，将 web.xml 作为被监视的资源。任何编辑/保存到此文件 重新加载我的网络应用程序，花费了一秒钟 - 比构建新的战争文件并全面部署它快得多。

但是，当我编辑任何源文件时，我想要做的是触发重新部署。由于Tomcat中的.class文件被修改，似乎我只需要监视 WEB-INF / classes 文件夹中的任何更改，它是孩子。

我已经读过，我可以在Tomcat的 context.xml 中添加其他观看资源，但这似乎不要相当我需要的 - 除非可以指定将被监视的目录（包括递归监视子文件夹和文件）？

 <语境GT; 
< WatchedResource> WEB-INF / web.xml< / WatchedResource> 
< WatchedResource> WEB-INF / someother.file< / WatchedResource> 
< Manager pathname =/> 
< / Context> 
  

所以本质上，我的问题是可以看整个课程文件夹（不包括每个 WatchedResource 在Tomcat中触发重新部署？

如果没有，我可以将Eclipse配置为 touch web.xml文件，每当我在该项目中保存源文件？我正在Windows系统上开发。 ：（

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PS我对JRebel产品不感兴趣任何答案应该是一个 strong>解决方案。

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更新

根据Tomcat 文档，类文件夹应该通过将上下文设置为可重新加载来监控：

如果您希望Catalina在/ WEB-INF中的
监视类，设置为true / classes /
和/ WEB-INF / lib进行更改，如果检测到更改，
会自动重新加载web
应用程序。

只有对web.xml的更改似乎触发了重新加载，这是一个错误，还是我的设置不正确？

另外，我已经阅读了关于为给定上下文设置 docBase 属性：

  docBase =webapps / someExample
  

出现s接近我需要的，因为我可以在Eclipse中快速重新发布。我唯一的问题是我需要几个web应用程序/ servlet在同一个端口等同时运行在Tomcat中。

解决方案

对于这些情况，我将eclipse构建输出设置为WEB-INF / classes，并且创建一个上下文文件，将docBase设置为项目中的webapp文件夹（WEB-INF的父级）。这是手动放置在conf / Catalina / localhost（假设server.xml的某些元素的默认配置）。最终的结果是tomcat最终从开发目录服务。所以，更改一个servlet或其他类，它更新到classes文件夹。如果项目结构如下：

  src 
 | -main 
 | -webapp 
 | -images 
 | -js 
 | -WEB-INF 
 | -jsp 
 | -classes 
  

然后上下文将如下：

 <？xml version =1.0encoding =UTF-8？> 
< Context path =/ pathoadable =true
 docBase =< pathtoproject> / src / main / webapp/> 
  

I want to be able to deploy code changes to Tomcat (near instantly), while I'm developing in Eclipse.

So far, I have my output from Eclipse placing the built classes in the WEB-INF/classes folder of my web application.

I also have a reloadable context, with the web.xml as a watched resource. Any edit / save to this file does reload my web app, taking just over one second - much quicker than building a new war file and deploying it in full.

However, what I'd like to do is trigger the redeploy when I edit any source file. As the .class files are being modified in Tomcat, it seems I just need to monitor any changes in the WEB-INF/classes folder and it's children.

I've read that I can add additional watched resources in Tomcat's context.xml but this doesn't seem to be quite what I need - unless it's possible to specify a directory that will be watched (including recursively monitoring sub folders and files)?

<Context>
  <WatchedResource>WEB-INF/web.xml</WatchedResource>
  <WatchedResource>WEB-INF/someother.file</WatchedResource>
  <Manager pathname=""/>
</Context>

So essentially, my question is can I watch the entire classes folder (without including each WatchedResource explicitly) to trigger a redeploy in Tomcat?

If not, can I configure Eclipse to touch the web.xml file, whenever I save a source file in that project? I'm developing on a Windows system. :(

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PS I'm not interested in the JRebel product. Any answer should be a free solution.

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Update

According to the Tomcat documentation, the classes folder should be monitored by setting the context to reloadable:

Set to true if you want Catalina to monitor classes in /WEB-INF/classes/ and /WEB-INF/lib for changes, and automatically reload the web application if a change is detected.

Only changes to the web.xml seem to trigger a reload. Is this a bug or is my setup incorrect?

Also, I've read about setting the docBase attribute for a given context:

docBase="webapps/someExample"

This appears to be close to what I need, as I could then republish in Eclipse quickly. My only problem is that I require several web apps / servlets to be running in Tomcat concurrently, on the same port etc.

解决方案

For these cases I set the eclipse build output to WEB-INF/classes as you have done and create a context file with the docBase set to the webapp folder (parent of WEB-INF) in the project. This is manually placed in conf/Catalina/localhost (assuming default configs for some elements of server.xml). End result is tomcat ends up serving from the development directory. So, change a servlet or other class and it is updated to the classes folder. Save a jsp and it is immediately available.

If project structured like:

src
|-main
  |-webapp
    |-images
    |-js
    |-WEB-INF
      |-jsp
      |-classes

Then context would be like:

<?xml version="1.0" encoding="UTF-8"?>
<Context path="/path" reloadable="true" 
    docBase="<pathtoproject>/src/main/webapp" />

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