JBoss Drools的可视化规则设计工具包在Drools 4.0的时候叫drools-jbrms。
drools-jbrms需要JDK1.5或以上版本，本文以drools 4.0.7的drools-jbrms包在Tomcat 6.0下部署为例。
第1步
按照JBoss官方提供的文档处理
- 删除war包中的el-api.jar
- 删除Tomcat的lib目录下的jsf-api.jar和jsf-impl.jar（本来不存在就不用管了）
- 从http://download.jboss.org/drools/dependencies/jboss_jsf_libs.zip下载JSF的jar包
- 将下载后的jboss_jsf_libs.zip解压到Tomcat的lib目录下
第2步
启动Tomcat。drools-jbrms会在Tomcat的bin目录下新建repository目录（包括很多子目录），同时会报无法启动的异常。异常信息为Caused by: javax.jcr.RepositoryException: internal error: failed to read custom node type definitions stored in custom_nodetypes.xml: Premature end of file.: Premature end of file.
(注意，这里我是在Tomcat/bin目录下用startup.bat启动的，如果不是这种方式repository的位置可能有所不同)
第3步
将本文提供的custom_nodetypes.xml覆盖Tomcat下的bin/repository/repository/nodetypes的同名文件。
第4步
重新启动
原因：drools-jbrms包含的某些功能在Tomcat下有问题，生成custom_nodetypes.xml时没有生成文件内容，所以报错。从网上查询，最迟2007年就有人报这个问题了。看来JBoss的对于非JBoss应用服务器的兼容问题考虑不多。
注：本文提供的custom_nodetypes.xml为drools-jbrms在JBoss应用服务器部署时生成的，内容如下：
- <?xml version="1.0" encoding="UTF-8"?><nodeTypes xmlns:drools="http://www.jboss.org/drools-repository/1.0" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:fn_old="http://www.w3.org/2004/10/xpath-functions" xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:mix="http://www.jcp.org/jcr/mix/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0" xmlns:rep="internal" xmlns:sv="http://www.jcp.org/jcr/sv/1.0" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xml="http://www.w3.org/XML/1998/namespace"><nodeType hasOrderableChildNodes="false" isMixin="false" name="drools:categoryNodeType" primaryItemName=""><supertypes><supertype>mix:referenceable</supertype><supertype>nt:hierarchyNode</supertype></supertypes><childNodeDefinition autoCreated="false" defaultPrimaryType="drools:categoryNodeType" mandatory="false" name="*" onParentVersion="COPY" protected="false" sameNameSiblings="false"><requiredPrimaryTypes><requiredPrimaryType>drools:categoryNodeType</requiredPrimaryType></requiredPrimaryTypes></childNodeDefinition></nodeType><nodeType hasOrderableChildNodes="false" isMixin="false" name="drools:packageNodeType" primaryItemName=""><supertypes><supertype>drools:versionableNodeType</supertype><supertype>nt:folder</supertype></supertypes><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="*" onParentVersion="COPY" protected="false" requiredType="undefined"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:compiledPackage" onParentVersion="COPY" protected="false" requiredType="Binary"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:externalURI" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:header" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="true" mandatory="true" multiple="false" name="drools:archive" onParentVersion="COPY" protected="false" requiredType="Boolean"><defaultValues><defaultValue>false</defaultValue></defaultValues></propertyDefinition><childNodeDefinition autoCreated="false" defaultPrimaryType="" mandatory="false" name="*" onParentVersion="IGNORE" protected="false" sameNameSiblings="false"><requiredPrimaryTypes><requiredPrimaryType>drools:versionableAssetFolder</requiredPrimaryType></requiredPrimaryTypes></childNodeDefinition></nodeType><nodeType hasOrderableChildNodes="false" isMixin="false" name="drools:assetNodeType" primaryItemName=""><supertypes><supertype>drools:versionableNodeType</supertype></supertypes><propertyDefinition autoCreated="false" mandatory="false" multiple="true" name="drools:categoryReference" onParentVersion="COPY" protected="false" requiredType="Reference"><valueConstraints><valueConstraint>drools:categoryNodeType</valueConstraint></valueConstraints></propertyDefinition><propertyDefinition autoCreated="false" mandatory="true" multiple="false" name="drools:packageName" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:dateExpired" onParentVersion="COPY" protected="false" requiredType="Date"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:dateEffective" onParentVersion="COPY" protected="false" requiredType="Date"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="*" onParentVersion="COPY" protected="false" requiredType="undefined"/><propertyDefinition autoCreated="true" mandatory="true" multiple="false" name="drools:archive" onParentVersion="COPY" protected="false" requiredType="Boolean"><defaultValues><defaultValue>false</defaultValue></defaultValues></propertyDefinition><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:attachmentFileName" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:binaryContent" onParentVersion="COPY" protected="false" requiredType="Binary"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:content" onParentVersion="COPY" protected="false" requiredType="String"/></nodeType><nodeType hasOrderableChildNodes="false" isMixin="false" name="drools:versionableAssetFolder" primaryItemName=""><supertypes><supertype>mix:versionable</supertype><supertype>nt:folder</supertype></supertypes><childNodeDefinition autoCreated="false" defaultPrimaryType="" mandatory="false" name="*" onParentVersion="IGNORE" protected="false" sameNameSiblings="false"><requiredPrimaryTypes><requiredPrimaryType>drools:versionableNodeType</requiredPrimaryType></requiredPrimaryTypes></childNodeDefinition></nodeType><nodeType hasOrderableChildNodes="false" isMixin="false" name="drools:versionableNodeType" primaryItemName=""><supertypes><supertype>mix:versionable</supertype><supertype>nt:hierarchyNode</supertype></supertypes><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:stateReference" onParentVersion="COPY" protected="false" requiredType="Reference"><valueConstraints><valueConstraint>drools:stateNodeType</valueConstraint></valueConstraints></propertyDefinition><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:checkinComment" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:createdDate" onParentVersion="COPY" protected="false" requiredType="Date"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:versionNumber" onParentVersion="COPY" protected="false" requiredType="Long"/><propertyDefinition autoCreated="false" mandatory="true" multiple="false" name="drools:title" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="true" multiple="false" name="drools:lastModified" onParentVersion="COPY" protected="false" requiredType="Date"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:lastContributor" onParentVersion="COPY" protected="false" requiredType="String"><defaultValues><defaultValue/></defaultValues></propertyDefinition><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:creator" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:type" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:source" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:subject" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:relation" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:rights" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:coverage" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="false" multiple="false" name="drools:publisher" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="true" multiple="false" name="drools:description" onParentVersion="COPY" protected="false" requiredType="String"/><propertyDefinition autoCreated="false" mandatory="true" multiple="false" name="drools:format" onParentVersion="COPY" protected="false" requiredType="String"/></nodeType><nodeType hasOrderableChildNodes="false" isMixin="false" name="drools:stateNodeType" primaryItemName=""><supertypes><supertype>mix:referenceable</supertype><supertype>nt:hierarchyNode</supertype></supertypes></nodeType></nodeTypes>