Eclipse Common Errors

1, the superclass "Javax.servlet.http.httpservlet" is not found in the build path

Cause: The server library was not added

Solution: Add the Server Runtime library to the project build path-Library

2. JSP error: Requires that a attribute name is preceded by whitespace

There was a problem with the introduced package format

3. Tomcat version Issue-tomcat version 6.0 only supports EE 1.2, 1.3, 1.4, and Java EE 5 Web Modules

Find the project->.settings folder in Eclipse workspace->org.eclipse.wst.common.project.facet.core.xml
Change the servlet version