org.apache.jasper.el.ELContextImpl cannot be cast to org.apache.jasper.runtime.ELContextImpl

时间：2021-08-11 21:30:41

这个问题纠结了好久，好几个项目都报出相同的错误，以至于想象到Tomcat的问题，卸载重装~~然并卵

------网上大致有两种解决办法，类似于这样：

解决案1：
项目引用tomcat目录面lib面catalina.jar候用myeclipse项目部署tomcat面候catalina.jar包加项目web-inf面lib文件夹面包tomcat面lib面catalina.jar包冲突报java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor错误解决项目部署tomcat面项目web-inf/lib面catalina.jar删掉重启tomcatok

解决案2：

修改tomcatcontext.xml文件context 元素添加
<Context>
<Loader delegate="true" />
 

  然而对我都不好用
 

后面在*上看到了这段话：

 


 
    
 
      
     down vote 
    

 
    
    
 
     
That can happen if your webapp ships with servletcontainer-specific JAR files such as jasper.jar, jetty.jar servlet.jar, etc in the /WEB-INF/lib for some unclear reason. This is in turn conflicting with with a different versioned JAR file on the target servletcontainer.
 
     
Remove that servletcontainer-specific JAR file from your webapp's /WEB-INF/lib. It doesn't belong there. It's supposed to be already supplied by the servletcontainer itself.
 
     
起因是jetty和相关tomcat的jar包冲突：
 
     
解决办法：把pom中的有关jetty的jar注释掉即可
 
     
 
     

 
         
 
           
         

 
         
       
<!--   
     <dependency> 
     <groupId>org.eclipse.jetty</groupId> 
     <artifactId>jetty-server</artifactId> 
     <version>8.1.8.v20121106</version> 
     </dependency> 
     <dependency> 
     <groupId>org.eclipse.jetty</groupId> 
     <artifactId>jetty-webapp</artifactId> 
     <version>8.1.8.v20121106</version> 
     </dependency> 
     <dependency> 
     <groupId>org.eclipse.jetty</groupId> 
     <artifactId>jetty-servlet</artifactId> 
     <version>8.1.8.v20121106</version> 
     </dependency> 
     <dependency> 
     <groupId>org.eclipse.jetty</groupId> 
     <artifactId>jetty-jsp</artifactId> 
     <version>8.1.8.v20121106</version> 
     </dependency> --> 
    

 
  



这样，从新部署，成功~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

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