Restart Eclipse after the entry into force and click project-clean can be solved, focusing see blog last sentence
Just create a project written servlet is run, the next day to continue to write servlet when the change command is not executed, == restart the server and run on server to no avail, just check the build automatically project is of no use == Finally, restart the IDE before they succeed.
The nature of reason:
servlet and jsp essentially servlet, are run .class file is run. But their deployment is not the same.
servlet is compiled after the first deployment, after you modify, MyEclipse compile, and deploy .class file into the servlet container. If the web server is started, before the class has been loaded servlet container, class file may not be modified to perform servlet container.
The jsp web server is compiled. tomcat jsp can be set to monitor changes to the file, then recompile after changes, execution.
Solution:
Click clean clear cache web servlet container.
Simplified method can be achieved by refreshing the page can be updated servlet file:
the Preferences-the Run-Windows / Debug-Editor received Reuse Reuse the when of a displaying Sourse code
Windows-the Preferences-General-Workspace-Build-Build the Save Automatically the before
such projects can each run when redeploying
