santaclaus 发表于 2017-12-24 12:29:25

tomcat启动报错 java.lang.ClassNotFoundException: org.apache.jsp.index

  项目运行一直很平稳,但是换了tomcat之后打开jsp网页时就报错,描述如下:
  1. 错误描述
  打开jsp网页时报错

java.lang.NullPointerException
    org.apache.jsp.WEB_002dINF.pages.imagecheck.test_jsp._jspInit(test_jsp.java:22)
或 java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
2. 原因
  由于tomcat 和 项目 中都有 servlet-api.jar 和 jsp-api.jar,换了tomcat之后,tomcat中的jar版本及编译的jdk版本不同,导致冲突
  版本查看,请看下图
  

Manifest-Version: 1.0  
Ant
-Version: Apache Ant 1.8.4  
Created
-By: 1.6.0_45-b06 (Sun Microsystems Inc.)  
X
-Compile-Source-JDK: 1.6  
X
-Compile-Target-JDK: 1.6  

  
Name: javax
/servlet/jsp/  
Specification
-Title: Java API for JavaServer Pages  
Specification
-Version: 2.2  
Specification
-Vendor: Sun Microsystems, Inc.  
Implementation
-Title: javax.servlet.jsp  
Implementation
-Version: 2.2.FR  
Implementation
-Vendor: Apache Software Foundation  
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