The first and second letters of the struts2 Bean class names cannot be capitalized.

The first and second letters of the struts2 Bean class names cannot be capitalized. Otherwise, a null pointer error occurs during set and get (nullpointerexception)

Cause:

For example, the background class has the property string sadress. Use eclipse to automatically generate getsadress () and setsadress (string sadress). Note: The first letter of the attribute in the generated method is not capitalized.

Parameters are passed using name = "sadress" on the page. The struts2 interceptor calls the setsadress (string sadress) method in the background class. This method is not available in the background.

Therefore, an error is reported.