tomcat提示action错误

struts配置：




/validate.jsp

/success.jsp

validate.jsp：




/s:form

ValidateAction：
package action;
import com.opensymphony.xwork2.ActionSupport;
public class validateAction extends ActionSupport{
public String name;
public String pass;
public void setName(String name){
this.name=name;
}
public String getName(){
return name;
}
public void setPass(String pass){
this.pass=pass;
}
public String getPass(){
return pass;
}
public String execute(){
return SUCCESS;
}
public void validate(){
if (name==null || name.length()15){
addFieldError("name","用户姓名长度不符合要求");
}
if (pass==null || pass.length()20){
addFieldError("pass","用户密码长度不符合要求");
}
}
}
tomcat运行正常，但是输入用户名以后 提示action错误：HTTP Status 404 - No result defined for action action.validateAction and result input，求指教

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