struts method validate的使用

    validate by manual programming <br>1: validate every action method <br>   (1):extend actionsupport and rewrite the validate method <br>   (2):<result name="input"/> <br>   (3):<s:filederror /> <br>2: validate specific action method <br>   (1):add validatexxx method to validate xxx method <br>   (2):<result name="input"/> <br>   (3):<s:filederror /> <br>validate by xml configuration <br>1: validate every action method <br>   (1):add actionclassname-validation.xml <br>   (2):<result name="input"/> <br>   (3):<s:filederror /> <br>2: validate specific action method <br>   (1):add actionclassname-actionname-validation.xml <br>   (2):<result name="input"/> <br>   (3):<s:filederror /> <br>validation.xml searching order: <br>1:single action <br>    owner:actionclassname-validation.xml <br>    owner:actionclassname-actionname-validation.xml <br>2:have parent <br>    parent:actionclassname-validation.xml <br>    parent:actionclassname-actionname-validation.xml <br>    owner:actionclassname-validation.xml <br>    owner:actionclassname-actionname-validation.xml