SAP Solutions: Building a simple Web Dynpro Application

Scenario:

To create and run a simple WebDynpro Application. We would accept an input value from the user on first screen and display the value entered on the second screen.

Note:

Please refer to the SAP® help for detailed information of the components used in this document.

Procedure:

1. Go to transaction SE80. Please note that there is no separate transaction for creation of WebDynpro application other than SE80.

2. Select “WebDynpro Comp./Intf” from the list (as shown below)

3. Create a new WebDynpro component by the name ZSAPTECHNICAL_DEMO. To create a new Web Dynpro component, enter the name ZSAPTECHNICAL_DEMO for the new component in the selection dialog of the object list, then Enter.

Assign it to the local object.

4. Right click on the WebDynpro component “ZSAPTECHNICAL_DEMO” and create a view.

Save the application

5. Double-click on the COMPONENTCONTROLLER.

6. Check if the application is in change mode.

7. Create a node as shown below:

8. Create an attribute for the node as shown below:

Save the application.

9. Double-click on the view, FIRST_VIEW, created earlier.

In this step, we would be designing the first screen of our application with the following elements:

· Label for the input field

· Input field

· Button (for Submit)

Drag and drop the element “Label” onto the layout.

After dragging and dropping onto the layout, change the text of the “Label” to “Username” in the right side bottom of the window.

Now drag and drop the “input field” onto the layout.

Now click on the Label element created earlier and set the property of “LabelFor” to “INPUT_FIELD”.

Finally, drag and drop the element “Button” on to the layout.

In the properties window of the Button, do the following:

Change the text to “Submit”

Click on “Create” for the property “OnAction”.

Enter the Action and the Outbound Plug name.

Press “OK” for the creation prompt of Outbound Plug.

Click on “Context”tab. Drag and drop the Node on the right side to the context on the left side.

Click on ‘YES’ for the prompt for the node to copied and mapped.

Save the application.

Click on Layout tab now.

Double-click on the “Input_field” and in the properties:

a) For the property “Value”, select the attribute “Name” by clicking on the binding button.

We are done with designing of the first screen.

10. In this step, we would design the second screen of our application.

Right-Click on the WebDynpro component and create another view, SECOND_VIEW.

Create a label, “Entered Name” as mentioned in the earlier step.

We would display the value entered on the first screen in an element called “text view”.

Drag and drop the element “Text View” onto the layout.

Click on “Context” tab and map the nodes as in our earlier step.

Go to Tab “Inbound Plugs” and create an inbound plug as shown below:

Go back to the layout now.

Now double-click on the element “TextView” to open the properties. For the property “Text”, click on the binding button and select “Name”

11. In this step, we would embed the above created views in the window created in the first step.

a) Double-click on the window “MAIN_WINDOW”.

b) Right-click on the window name and select “EMBED VIEW”.

c) Embed both the views created earlier. Do not select the view “EMPTYVIEW” which is created by default.

d) Expand the tree.

e) Now right-click on “SUBMIT” and select “Create Navigation”.

f) Select “SECOND_VIEW” for the dest.view.

g) Now select the FIRST_VIEW and make it as default.

Save and activate the application (When activating, select all the six components related to this webdynpro application. If all six components are activated, only then your application executes)Now your application is ready to execute. Lets look at the method of testing this application.

Testing your WebDynpro Component

1. Right-click on the WebDynpro Component and create WebDynpro Application.