org.apache.jasper.JasperException: Failed to load or instantiate TagLibraryValid

宋建勇

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编程错误及处理

JasperException Failed instantiate TagLibraryValidator

org.apache.jasper.JasperException: /WEB-INF/jsp/user/add.jsp(1,87) /WEB-INF/jsp/user/../inc/header.jsp(3,0) /WEB-INF/jsp/user/../inc/taglib.jsp(3,62) Unable to read TLD "META-INF/c.tld" from JAR file "file:/E:/Workspaces/java/songjy/.metadata/.plugins/org.eclipse.wst.server.core/tmp1/wtpwebapps/songjy-springmvchibernate4.1.0-1.0/WEB-INF/lib/jstl-1.2.jar": org.apache.jasper.JasperException: Failed to load or instantiate TagLibraryValidator class: org.apache.taglibs.standard.tlv.JstlCoreTLV
	org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:88)
	org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:300)
	org.apache.jasper.compiler.Parser.parseIncludeDirective(Parser.java:333)
	org.apache.jasper.compiler.Parser.parseDirective(Parser.java:442)
	org.apache.jasper.compiler.Parser.parseElements(Parser.java:1397)
	org.apache.jasper.compiler.Parser.parse(Parser.java:130)
	org.apache.jasper.compiler.ParserController.doParse(ParserController.java:255)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:103)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:185)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:321)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	cn.javass.common.web.filter.BackURLFilter.doFilter(BackURLFilter.java:37)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

原因是jar包冲突，在tomcat的lib目录中已存在jsp-api.jar及servlet-api.jar两jar包，项目中我又添加了这两jar包，当然不是来自tomcat的lib目录中的，所以出现这种结果

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Eclipse 中安装插件和配置Tomcat项目启动 | maven向本地库(私有中央库)安装jar包

2012-11-13 11:33
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