HTTP Status 500 - The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core 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:445)

org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:117)

org.apache.jasper.compiler.TagLibraryInfoImpl.generateTLDLocation(TagLibraryInfoImpl.java:325)

org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:154)

org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:419)

org.apache.jasper.compiler.Parser.parseDirective(Parser.java:484)

org.apache.jasper.compiler.Parser.parseElements(Parser.java:1421)

org.apache.jasper.compiler.Parser.parse(Parser.java:138)

org.apache.jasper.compiler.ParserController.doParse(ParserController.java:242)

org.apache.jasper.compiler.ParserController.parse(ParserController.java:102)

org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:341)

org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:662)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:364)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)

org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)

javax.servlet.http.HttpServlet.service(HttpServlet.java:731)

org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)

org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)

org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1228)

org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1011)

org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955)

org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)

org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)

org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)

javax.servlet.http.HttpServlet.service(HttpServlet.java:624)

org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)

javax.servlet.http.HttpServlet.service(HttpServlet.java:731)

org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

pom.xml 中存在：

<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

难道taglibs 1.1.2 引起的？

有时候：

HTTP Status 500 - /WEB-INF/pages/validatetest.jsp (line: 35, column: 14) According to TLD or attribute directive in tag file, attribute items does not accept any expressions

不是。http://stackoverflow.com/questions/4928271/how-to-install-jstl-the-absolute-uri-http-java-sun-com-jstl-core-cannot-be-r

还是去掉吧。

改了jstl 的taglib 声明， 清除了work 缓存，重启tomcat，重启me， 还是不行。

重新部署， ok了！！