How to convert a Java project into a Web project

1. Modification of Engineering documents

Locate the Project Workspace directory, open the. project file, locate the:<natures> </natures> code snippet, add the following to the code snippet, and Save:
<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>

2, refresh the project.

3. Modify the Configuration
Right-click Project, Properties, select "Project Facets" in the list item on the left, select "Dynamic Web Module" and "Java" on the right, and if you want to modify eclipse default webcontent to Webroot, tap further Configuration available ..., change the default content redirectory to Webroot click OK.
Click to click Save, Java Project to convert to Web project.

Attention:
After you convert a Web project, when you use Tomcat to publish, you can see if the file is fully deployed under "tomcat/webapps/app name" If you report 404, typically missing static resources such as jar packages and JSP, JS files.
Refer to "Eclipse Add deployment Assembly" on this site.

How to convert a Java project into a Web project