MAVEN deploys the project to tomcat-error: JAVA.LANG.NOCLASSDEFFOUNDERROR:JAVAX/SERVLET/JSP/JSTL/CORE/CONFIG__JS

Today, when you use Maven to write SPRINGMVC, you encounter a problem when you deploy to Tomcat:

Java.lang.noclassdeffounderror:javax/servlet/jsp/jstl/core/config
At Org.springframework.web.servlet.support.JstlUtils.exposeLocalizationContext (jstlutils.java:101)
At Org.springframework.web.servlet.view.JstlView.exposeHelpers (jstlview.java:135)
At Org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel (Internalresourceview.java : 142)
At Org.springframework.web.servlet.view.AbstractView.render (abstractview.java:303)
At Org.springframework.web.servlet.DispatcherServlet.render (dispatcherservlet.java:1244)
At Org.springframework.web.servlet.DispatcherServlet.processDispatchResult (dispatcherservlet.java:1027)
At Org.springframework.web.servlet.DispatcherServlet.doDispatch (dispatcherservlet.java:971)
At Org.springframework.web.servlet.DispatcherServlet.doService (dispatcherservlet.java:893)
At Org.springframework.web.servlet.FrameworkServlet.processRequest (frameworkservlet.java:970)
At Org.springframework.web.servlet.FrameworkServlet.doPost (frameworkservlet.java:872)
At Javax.servlet.http.HttpServlet.service (httpservlet.java:637)
At Org.springframework.web.servlet.FrameworkServlet.service (frameworkservlet.java:846)
At Javax.servlet.http.HttpServlet.service (httpservlet.java:717)
At Org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (applicationfilterchain.java:290)
At Org.apache.catalina.core.ApplicationFilterChain.doFilter (applicationfilterchain.java:206)
At Org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal (characterencodingfilter.java:85)
At Org.springframework.web.filter.OncePerRequestFilter.doFilter (onceperrequestfilter.java:107)
At Org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (applicationfilterchain.java:235)
At Org.apache.catalina.core.ApplicationFilterChain.doFilter (applicationfilterchain.java:206)
At Org.apache.catalina.core.StandardWrapperValve.invoke (standardwrappervalve.java:233)
At Org.apache.catalina.core.StandardContextValve.invoke (standardcontextvalve.java:191)
At Org.apache.catalina.core.StandardHostValve.invoke (standardhostvalve.java:128)
At Org.apache.catalina.valves.ErrorReportValve.invoke (errorreportvalve.java:102)
At Org.apache.catalina.core.StandardEngineValve.invoke (standardenginevalve.java:109)
At Org.apache.catalina.connector.CoyoteAdapter.service (coyoteadapter.java:293)
At Org.apache.coyote.http11.Http11Processor.process (http11processor.java:849)
At Org.apache.coyote.http11.http11protocol$http11connectionhandler.process (http11protocol.java:583)
At Org.apache.tomcat.util.net.jioendpoint$worker.run (jioendpoint.java:454)
At Java.lang.Thread.run (thread.java:619)

So think for a long time, finally find out, originally less guide the Jstl.jar. and Standard.jar these two jar packs

1 To add the two jar dependencies in the Pom.xml file, it's OK.

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

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

2 Create the folder in the local warehouse and put the jar bag in

Discover folder names created in local libraries and configure dependencies for GroupID, Artifactid, and version .... Ha ha

<dependency>
<groupId>javax.servlet.jl</groupId>
<artifactId>jstl</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>taglibs.jl</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>

3) can write dead path, not really understand yet.

After the addition succeeds, stop the server, clear, package, and so on, and then use Tomcat:run to start the server

What's the effect of these two jar packs?

The role of Standard.jar
The JSP standard tag library, which is used in conjunction with Jstl.jar, is in the 1.0 version, but is not needed in Jstl-1.2.jar.
If you want to use Jstl and El Expressions in your project, you must introduce this Standard.jar file. Even if you do not introduce, the MyEclipse tool will also help you pour in the library.

Reference URL: http://www.cnblogs.com/buglove/p/5159093.html