When the form attribute is assigned a value on the JSP page, it is reported that the attribute is null or not an object.

In struts, when a JSP operation assigns a value to a form attribute on the page, the page prompts ** form. ** property. the value is null or not an object, but the object is defined in form. Why is this happening? It is because you did not place the property displayed on the page <HTML: in the form/> label range, the solution is to add <HTML: hidden property = "attribute with error"/> In the <form/> range.

Note that when the record is dynamically printed in the <logic: iteator/> label for batch processing, an attribute that records the number of all records of a user.
<Input type = "hidden" name = "delpscodearray" value = "<Bean: write name = 'ivcipsevo 'property = 'pscode'/>"/>

Note: Only HTML tags can be used, but not <HTML: hidden/> tags.