如何在web.xml文件中引入其他的xml文件(web.xml如何拆分)

 

                   如何在web.xml文件中引入其他的xml文件

      为了便于以后拆分，于是想到将web.xml文件中的servlet和servlet-mapping能够从web.xml脱离出来，用其他xml文件保存然后在web.xml文件中引入这些文件，就想类似引入struts.config一样。
        
        
        具体做法如下：
            1.按模块将servelet从web.xml中拷贝出来，放到一个test.xml中，如test.xml中内容如下：
                <servlet>
                       <servlet-name>testA</servlet-name>
                       <servlet-class>TestA</servlet-class>
                </servlet>
                <servlet-mapping>
                    <servlet-name>testA</servlet-name>
                    <url-pattern>/testA.do</url-pattern>
                </servlet-mapping>

            2.在我的WEB-INF/web.xml中引入test.xml
                <!DOCTYPE web-app [

                    <!ENTITY test SYSTEM  "file:///D:/eclipse/workspace/Test/WebRoot/WEB-INF/test.xml">
                    <!ENTITY admin SYSTEM  "admin.xml">

                ]>  

                或者：

 

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 
"http://java.sun.com/dtd/web-app_2_3.dtd" [ 

	  <!ENTITY ssoconf SYSTEM "test.xml">
	  <!ENTITY smartclientconf SYSTEM "admin.xml">

]>

 

                <web-app version="2.5" 
                     xmlns="http://java.sun.com/xml/ns/j2ee" 
                     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
                     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

 

                     http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd"                               

                >    
                &test;
                &admin;
                </web-app>
            以上修改即可，web.xml会在开头引入你的test.xml.然后  &test;表示你放的地方。 
            如果设定的是相当路径，可以如此设定：
            如果test.xml和web.xml在同一个文件夹，则   [<!ENTITY test SYSTEM  "test.xml">]
            如果test.xml在web.xml所在文件夹的ccc文件夹中，则  [<!ENTITY test SYSTEM  "ccc/test.xml">]

 

  3.以上做法在Window下使用,不會出錯,但是部署到Linux時就會出錯:

            2011-12-15 09:09:39,136 ERROR [org.apache.jasper.xmlparser.ParserUtils] - Invalid PUBLIC     ID: null

org.apache.jasper.JasperException: XML parsing error on file /WEB-INF/web.xml

        at org.apache.jasper.xmlparser.ParserUtils.parseXMLDocument(ParserUtils.java:113)

        at org.apache.jasper.compiler.JspConfig.processWebDotXml(JspConfig.java:70)

        at org.apache.jasper.compiler.JspConfig.init(JspConfig.java:188)

        at org.apache.jasper.compiler.JspConfig.findJspProperty(JspConfig.java:240)

        at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:160)

        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:470)

        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)

        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)

        at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)

        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)

        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)

        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)

        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)

        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474)

        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)

        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)

        at javaservlets.common.util.IndexServlet.doProcess(IndexServlet.java:368)

        at javaservlets.common.util.IndexServlet.doGet(IndexServlet.java:712)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

        at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:419)

        at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:133)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)

        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)

        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)

        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)

        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)

        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)

        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)

        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)

        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)

        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)

        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)

        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300)

        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374)

        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743)

        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:675)

        at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866)

        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)

        at java.lang.Thread.run(Thread.java:619)

 不知道原因？