java.lang.NoClassDefFoundError：javax.servlet.ServletInputStream在Websphere上部署时出错

Question

I have created a jersey web service with neatbeans using glassfish as my server, everything works fine but i have issues trying to install the same app on websphere 7.

i get this error "Error 500 An error occurred while processing request: /ibm/console/upload.do Message: java.lang.NoClassDefFoundError: javax.servlet.ServletInputStream".

I even tried creating a simple web app and tried to deploy on websphere, again, i have the same error.

Anybody with ideas? I need your help so badly ya'll. Thanks in advance

Answer 1

Make sure you don't have servlet-api.jar in your WEB-INF/lib. If its there it may interfere with the one already present in websphere a trick the classloader

Answer 2

I suppose I am not too late to reply to this question. The HttpServlet class can be found in the j2ee.jar. WAS does not bundle it in servlet-api.jar, the way Tomcat does it.

Answer 3

I did below steps which worked for me :

1. Go to the server in console(which was stand - alone in my case ie no DMGR)
2. Change the class loader policy to "multiple".

Answer 4

您需要在应用程序中捆绑servlet-api.jar文件。