Let's configure a basic validation workflow, step by step.
Step 1
Create the input form.
Error formatting macro: snippet: java.lang.NullPointerException
Step 2
Create the Action class.
Error formatting macro: snippet: java.lang.NullPointerException
Step 3
Create the validators. The validation.xml
format is either <ActionClassName>-validation.xml
or <ActionClassName>-<ActionAliasName>-validation.xml
.
Error formatting macro: snippet: java.lang.NullPointerException
Step 4
Make sure there is a result for "input" listed in the struts.xml for when the validation fails:
<action name="HelloWorld" class="tutorial.HelloWorld"> <result name="success">/tutorial/createconfirm.jsp</result> <result name="error">/tutorial/error.jsp</result> <result name="input">/tutorial/create.jsp</result> </action>
If you don't have this, you'll get a: "No result defined for action xxx.xxx.tutorial.HellowWorld and result input" error