At Org.apache.jsp.index_jsp._jspinit (index_jsp.java:23) Exception resolution

Deploy the project, start tomcat everything is OK. After you enter the project address, the Tomcat report is such as the following error:

Java.lang.NullPointerExceptionat Org.apache.jsp.index_jsp._jspinit (index_jsp.java:23)

The cause is a jar package conflict under the project Jar package and Tomcat.

Delete the Jsp-api.jar and Servlet-api.jar two jar packages in the project (web-inf\lib\),

Let's say it doesn't work. Check the. classpath file to see if the two jar packages are referenced by Jsp-api.jar and Servlet-api.jar

If there is a delete, restart Tomcat

if it is an error, you need to Clean A bit

Assuming it's still not working, restart MyEclipse

If it doesn't work, restart the computer.

Suppose still not, ...

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At Org.apache.jsp.index_jsp._jspinit (index_jsp.java:23) Exception resolution