Configure Tomcat under Eclipse3.1, then create a project, come over some of the previous source code, when starting Tomcat, the Cannot Find The Declaration of Element 'web-app' is incorrect! After some studies, I found that XMLVALIDATION = "True" in the host attribute in Server.xml. After removing this property, you can start it normally. At the same time, the information when starting Tomcat will also prompt: XML Validation Enabled or XML Validation Disabled But I haven't found XMLValidation = "True" When I have an error, I also try to modify the web.xml file, but I haven't succeeded! There are similar problems or knowing my problem, welcome to discuss!
