The XChain Container package provides commands/chains for working with servlets. Here is a quick example of an xchain that produces output to a servlet:
<xchain:catalog xmlns:sax="http://www.xchain.org/sax/1.0" xmlns:jsl="http://www.xchain.org/jsl/1.0" xmlns:servlet="http://www.xchain.org/servlet/1.0" xmlns:xchain="http://www.xchain.org/core/1.0"> <xchain:chain xchain:name="my-chain-name"> <sax:pipeline> <sax:command-source> <jsl:template> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Testing</title> </head> <body> <h1>This is a test</h1> </body> </html> </jsl:template> </sax:command-source> <servlet:result/> </sax:pipeline> </xchain:chain> </xchain:catalog>