下面是我访问自己写的action后，出错的页面，我是照着例子来的。各位大哥帮帮忙。

HTTP Status 500 - The absolute uri: http://jakarta.apache.org/struts/tags-bean cannot be resolved in either web.xml or the jar files deployed with this application

type Exception report

message The absolute uri: http://jakarta.apache.org/struts/tags-bean cannot be resolved in either web.xml or the jar files deployed with this application

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: The absolute uri: http://jakarta.apache.org/struts/tags-bean cannot be resolved in either web.xml or the jar files deployed with this application
	org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:56)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:278)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:76)
	org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath(TagLibraryInfoImpl.java:242)
	org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:124)
	org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:411)
	org.apache.jasper.compiler.Parser.parseDirective(Parser.java:469)
	org.apache.jasper.compiler.Parser.parseElements(Parser.java:1455)
	org.apache.jasper.compiler.Parser.parse(Parser.java:139)
	org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

note The full stack trace of the root cause is available in the Apache Tomcat/8.0.8 logs.