Exporting table data to MS-Excel Sheet(enhanced Web Dynpro Binary Cache)

Question

Hi experts,
I am trying to implement the functionality of downloading the contents of a webdynpro screen to excel sheet. In order to implement the functionality of excel download i used the following blog.
[/people/subramanian.venkateswaran2/blog/2006/08/16/exporting-table-data-to-ms-excel-sheetenhanced-web-dynpro-binary-cache ]
In this blog they have used javaexcel api to implement the excel functionality. I face some problems
while implementing it.
i) The use of "Label label = new Label(0, 2, "A label record");
sheet.addCell(label); " is not supported. It says that a constructor for label with
(int, int, str) parameter is not available.
ii) Then i implemented it with "Label label = new Label("A label record"); " Then i deployed it. I got a runtime exception saying that " java.lang.ClassNotFoundException: jxl.format.CellFormat ".
This cellFormat is an interface available in the jar. I am using jexcelapi_2_6_9_1.4 version. Do i have to
download some other versions.
Please help. Thanks in advance.
Regards
Ramanan

Answer 1

Hi,
Please check the following steps while creating External Library DC:
1) creating an Extneral library DC
2) import the JARs to the libraries folder of the External Library DC project
3) Right-click on each of the JARs imported to the project and add them to the public part.
This DC is now ready to be used as a build-time reference that will allow CBS to build the "main" Web Dynpro application that will use the external libraries. Next, we have to create a new Web Dynpro DC to hold the class files here are the steps:
1) Create a new Web Dynpro DC
2) Create a new public part, selecting the "Can be packaged into other build results" option
3) Rename the JARs as Zip files and extrct the full content (folders and class files) to your root folder
4) Import the folders and files to the src/packages folder
5) Expand the public part node that was created and select the "Entities" node, right-click it and choose Edit
6) In the Entity Type list select the "Folder" option then in the selected entities tree pick each of the folders that you imported in step 5 (above)
7) Now do a DC build and a DC deploy of the project
Then check-in, activate, and release any activities you have associated with creating these two projects. In the DC perspective, refresh the Active DCs and Inactive DCs to ensure that both new DCs appear in the Active list. Now we have to setup the references to these DCs in our main Web Dynpro application. To do this, follow these steps:
1) Open the Web Dynpro perspective and right click the Used DCs node then choose "Add Used DC.."
2) Pick the public part of the External Library DC that we created (first) and set it to have a Build Time dependency
3) Again, right click the Used DCs node and choose "Add Used DC.." then choose the public part of the Web Dynpro DC that we created and give it a Run Time dependecy (weak) and click finish.
4) Now, due to what I think is a bug. You must right click on the Web Dynpro "used DC" that you just added in the previous step, and set the run time dependency again (it seems to revert to the default values for some reason)
5) Now do a DC build and a DC deploy on the "main" web dynpro application.
6) Check-in, activate, and release any activities associated with adding these references and then others on your team may use the classes in the external libraries within the Web Dynpro project.
Regards.
Rajat