To debug with the Debug on Server dialog box when the server already exists:

1. In the Project Explorer view, select a resource you want to debug, and in the context menu, choose Debug As, and then Debug on Server.
   The Debug On Server dialog box appears.
   

   

   For details on the resources to be debugged, see (2) Resources to be debugged.
   
2. Specify the following items:
   

   Item name	Specified value
   Select the server that you want to use	Specify the registered J2EE server. Specify Cosminexus J2EE server.
   Always use this server when running this project	Specify whether to use the J2EE server selected in Select the server that you want to use when this project is executed. If you want to use this server whenever this project is executed Select this check box. If you do not want to use this server whenever this project is executed Do not select this check box.

3. Click the Finish button.
   When the J2EE server starts and the publishing of the project is complete, the Web browser appears.
   

The following table describes the resources targeted for debugging when you debug with the Debug on Server dialog box:

Resource	Browser display	Explanation
Enterprise application project	X	When the dynamic Web project is available in the module project, the URL of that context root is displayed in the Web browser. # For multiple dynamic Web projects, the first dynamic Web project in the alphabetical sequence of project names is displayed on the Web browser. If you want to target a dynamic Web project other than the first dynamic Web project, select that dynamic Web project and execute debug. For example: http://localhost/context-root/ The web browser is not displayed if a dynamic Web project is not available in the module project.
EJB Project	N	The web browser is not displayed.
Dynamic Web project	Y	The context root URL of the specified project is displayed in the Web browser. # For example: http://localhost/context-root/
JSP or HTML files under the contents directory of the dynamic Web project	Y	The selected file is displayed in the Web browser. For example: http://localhost/context-root/file-path
Servlet classes under the Java source directory of the dynamic Web project	Y	The selected servlet class is displayed in the Web browser. For example: When a servlet mapping tag is specified http://localhost/context-root/servlet-URL When a servlet mapping tag is not specified http://localhost/context-root/servlet/fully-qualified-servlet-class-name
Other	N	Resources other than those mentioned above are not debugged.

Legend:

Y: Web browser is displayed.

X: Web browser display is restricted.

N: Web browser is not displayed.

#

If the Welcome page does not exist in a dynamic Web project, an error occurs (error status code 404).

Note the following points when you debug J2EE applications:

• The value specified in application.xml or the project name is used as the context root. The value specified on the Web Project Settings page of the dynamic Web project is not used. Note that you can specify only the characters that can be used in URI (RFC3986) in the context root.
• If classes with the same fully-qualified name exist in multiple projects within a workspace, the breakpoints set in the source files of the projects that are not to be debugged might be enabled when debugging is executed.
• When Debug on Server or Run on Server is executed, the web browser starts before the application, and you might not be able to access the Web page. In such cases, access the Web page again after the application starts.
• If a Web window that was displayed once is displayed with the Debug on Server operation, the operation might not stop at the specified breakpoint. In such a case, by executing the reload operation of the browser, the Web window is displayed correctly and the operation stops at the breakpoint.