How to use Apache Struts under JDI

[Former Member]

Hi there,

I would like to develop a web-application based on the framework "Apache Struts". I am using JDI with the following structure:

- MyApplication

|-> DC: ear_project

|-> DC: web_project

This web_project will be used for the struts application. The whole web-content and the servlets will be developed here. The web_project will be transported onto the server by the ear_project.

Now my problem: When I put the struts-libraries (several .jar-files) into the project and add them to the Java-Build-Path (-> add external jars), everything works fine. I get the references to the libraries. When I want to build the web_project and deploy it onto the server, then all added libraries are missing. I copied them into an additional folder under WEB-INF.

Does anyone know how to reference these libraries? How can I use Struts with JDI?

Regards,

Thomas

[Former Member · Accepted solution]

Hi,

I'm not sure if this will help as I'm only guessing but...

Have you tried creating a Library DC containing all the required struts .jar files and referencing this DC in your other two DC's. Then when you deploy all three DC's to the server it might work?!

Good luck,

Gareth Ryan.

[Former Member · Accepted solution]

Hi Gareth,

what type of DC should I use?

- Java-Project

- J2EE-Server -> Library

- ...

Your suggestion sounds really good. This could work.

Best Regards,

Thomas

[Former Member · Accepted solution]

Hi Thomas,

It's an external library DC. Have a look here - /people/valery.silaev/blog/2005/09/14/a-bit-of-impractical-scripting-for-web-dynpro - for more info.

Hope this helps,

Gareth.

[Former Member · Accepted solution]

Hi Gareth,

I tried to deploy the jars as described in the link you suggested. Everything works fine until the last step: When I want to build the "J2EE - Server library", I get the following errors:

- The project was not built due to classpath errors (incomplete or involved in cycle). DTR_CFP22SP0_D~cfp~conv_jar~technidata.de		

- Missing required Java project: DTR_CFP22SP0_D~cfp~conv_libs~technidata.de.	DTR_CFP22SP0_D~cfp~conv_jar~technidata.de		Build path

DC DTR_CFP22SP0_D_cfpconv_jar~technidata.de is the deployable project "J2EE - Server library"

DC DTR_CFP22SP0_D_cfpconv_libs~technidata.de is the "external library" project containing the struts-archive.

After pressing the "Build" button, the SDA file does not contain the jars, but they are visible under "gen - default - public- defLib - lib - java".

Do you have some ideas to solve this?

Best Regards,

Thomas

[former_member182372 · Accepted solution]

Hi Thomas,

Did you add public part from DTR_CFP22SP0_D_cfpconv_jar_{technidata.de (ExternalLibs I guess, as in Valery`s blog) DC to DTR_CFP22SP0_D}cfp_{conv_libs}technidata.de as descibed on step "Add used DC (External Library) to J2EE library". Did you build DTR_CFP22SP0_D_cfpconv_libs~technidata.de as DC (Development component - build)?

Best regards, Maksim Rashchynski.

[Former Member · Accepted solution]

Hi Maksim,

thanks for your answer. I did every step as described in the blog. I built the DTR_CFP22SP0_D_cfpconv_libs_{technidata.de and after that I synced the sources (DCs) in the DTR_CFP22SP0_D}cfp_{conv_jar}technidata.de. Then I wanted to build the DTR_CFP22SP0_D_cfpconv_jar~technidata.de. Then the errors (build path) occures.

Best regards,

Thomas

[former_member182372 · Accepted solution]

Hi Thomas,

Just build DTR_CFP22SP0_D_cfpconv_libs_{technidata.de. As DTR_CFP22SP0_D}cfp_{conv_libs}technidata.de contains link to public part of DTR_CFP22SP0_D_cfpconv_jar~technidata.de it should resolve dependencies and you don`t need to do anything manually.

BTW, did you add jar file from DTR_CFP22SP0_D_cfpconv_jar_{technidata.de to build path of DTR_CFP22SP0_D}cfp_{conv_libs}technidata.de directly? Or only through public part?

Best regards, Maksim Rashchynski.

[former_member182372]

Hi Thomas,

Just repeated scenario on my local NWDS:

1) crate web DC

2) manually create lib folder under WEB-INF

3) copy couple of jar files to this new created folder

4) add jars as external libraries

5) "development component"->build

After build

comp\gen\default\public\war\lib\java\<DCNAME>.war contains jars under WEB-INF\lib

Are you doing the same?

Best regards, Maksim Rashchynski.

[Former Member]

Hi Maksim,

you are right, I did the same. The .war contains all libraries but after "development component" -> build, I get compile errors "The import org.ápache.struts cannot be resolved". I think NWDS modifies the java-build-path after building the DC.

Best Regards,

Thomas