Home > Developer > JSP

Javaweb Project JSP jump servlet Error instantiating servlet class problem

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞



Problem:


HTTP Status 500-error instantiating servlet class Recommenderservlet


type Exception Report



message Error instantiating servlet class Recommenderservlet



Description The server encountered an internal error, prevented it from fulfilling this request.



exception 


javax.servlet.ServletException: Error instantiating servlet class RecommenderServlet
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	java.lang.Thread.run(Thread.java:745)





Root cause 


java.lang.ClassNotFoundException: RecommenderServlet
org.apache.catalina.loader.WebappClassLoader.loadClass (WebappClassLoader.java:1714)
org.apache.catalina.loader.WebappClassLoader.loadClass (WebappClassLoader.java:1559)
org.apache.catalina.authenticator.AuthenticatorBase.invoke (AuthenticatorBase.java:502)
org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke (AccessLogValve.java:953)
org.apache.catalina.connector.CoyoteAdapter.service (CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process (AbstractHttp11Processor.java:1023)
org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process (AbstractProtocol.java:589)
org.apache.tomcat.util.net.JIoEndpoint $ SocketProcessor.run (JIoEndpoint.java:312)
java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1145)
java.util.concurrent.ThreadPoolExecutor $ Worker.run (ThreadPoolExecutor.java:615)
java.lang.Thread.run (Thread.java:745)

Solution: The problem lies in web.xml, <servlet-class> xxx </ servlet-class> should be configured as <servlet-class> package name where servlet is located. Name of servlet </ servlet>
For example: <servlet-class> cn.fth.servlet.RecommenderServlet </ servlet-class>


Javaweb Project JSP jump servlet Error instantiating servlet class problem


This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
jsp vs servlet jsp servlet tutorial servlet hosting php servlet servlet init servlet tutorial servlet vs php
Related Article
Set the html/jsp edit automatic prompt in MyEclipse 9/10 __html
JSP (6)--JSP declaration
Springboot load JSP refresh JSP, refresh controller (try it Y...
A simple calculator for JSP exercises (using Jsp+javabean mode)
Use absolute path $ {pagecontext. Request. contextpath} in JSP}

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More