About form elements in struts - Form bean not specified on mapping for action: 'helloa.do' error_html/css_WEB-ITnose

When I tested struts today, I copied a small form submission code written in the book

1 <html:form action="helloa.do" method="post">2         <html:submit value="提交"></html:submit>3     </html:form>

Reported Form bean not specified on mapping for action: "helloa.do "wrong.

The configuration in struts-config.xml is as follows:

<action-mappings> <action path="/helloa" type="action.HelloAction" scope="request" input="success.jsp"> <forward name="s" path="/success.html"/> </action> </action-mappings>

ActionForm is not used here, so the name attribute is not added. This should have no impact.

The front-end code was later changed as follows:

 <form action="helloa.do" method="post">        <html:submit value="提交"></html:submit>    </form>

The page jumped successfully, which may be due to the tag. Hence this note.