HTTP Status 500 - java.lang.ClassNotFoundException: org.apache.jsp.index_jsp

Question

I made a JSP-Project in Eclipse (with Tomcat 7) but when I run the page, i get an ClassnotFoundExcption.

in my Project i work with Controllers to bind Data to the JS

Answer 1

For Java-EE projects converted to Maven project with jstl dependency in pom.xml: In my case, I needed to add Maven dependencies to the build path

Walkthrough:

• right click the project in question
• open Properties
• click on Deployment Assembly
• click Add
• select Java Build Path Entries
• select Maven dependencies

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Update: also check your Execution enviroment && Workspace JRE are correctly setup.

Answer 2

I had this problem because in the eclipse configuration I had the JDK folder (jdk1.6.0_45) set as the JRE location. Instead it should have been set to jre6 in my "Installed JREs" preferences.

Answer 3

1.Open command prompt using "Run as administrator" or using sudo in Linux

2. Go to the "bin" directory of Tomcat folder. for example: cd C:\Program Files\Apache Software Foundation\Apache Tomcat 8.0.15\bin

Note the version number and the accurate Location.

3. Run 'startup.bat' and the Server should start

4. Open a web browser entered http://localhost:8080/

5. If the server runns without exceptions, this means that you must give eclipse administrative privileges.

to do that you can visit: Windows 7 - Eclipse now needs me to run as administrator or https://askubuntu.com/questions/249098/how-do-i-run-eclipse-as-sudo