Grails运行应用程序从根上下文提供文件

Question

How does one serve up files from the root context when running a grails application with run-app. For example, I want to serve up robots.txt file from /robots.txt and serve up my application from /mygrailsapp/ .

Does grails run-app use tomcat? How do you configure the tomcat plugin to serve static files from the root context?

Failed paths taken thus far...

1) I found a way to set the project to the root context so everything is served from the root context but this is not want I want. http://nickcarroll.me/2009/03/27/configuring-the-grails-root-application-context/

2) I found an old post (2008) describing how to enable multiple contexts with run-app and jetty. Does run-app still use jetty? http://colinharrington.net/blog/2008/07/grails-jetty-and-crossdomainxml/

Similar to question How to place certain files in the root directory of the Grails server? but I want a solution that is contained within the grails project.

Thanks,

Nathan

Answer 1

After some digging it looks like this is easy.

First, embedded tomcat can be configured via scripts/_Events.groovy with the eventConfigureTomcat event handler. http://roshandawrani.wordpress.com/2011/03/13/grails-tip-configuring-embedded-tomcat-instance-used-in-developmenttest-env/

Second, you can add another context to serve out files from root. http://grails.1312388.n4.nabble.com/Add-virtual-directory-in-grails-tomcat-plugin-td2234448.html#a2234448

import org.apache.catalina.loader.WebappLoader

eventConfigureTomcat = {tomcat ->
    File dir = new File("./scripts/rootContext")
    def rootContext = tomcat.addWebapp("/", dir.getAbsolutePath())
    rootContext.reloadable = true
    rootContext.loader = new WebappLoader(tomcat.class.classLoader)

    //bonus answer - gzip json response
    tomcat.connector.setAttribute("compression", "on")
    tomcat.connector.setAttribute("compressableMimeType", "applicatio/json")
}

start grails with run-app and /robots.txt will get served from scripts/rootContext/robots.txt.