可能原因
lInstantiating Struts-provided Actionform class directly instead of instantiating a class derived off Actionform. This might occur implicitly if you specify that a form-bean is this Struts Actionform class rather than specifying a child of this class for the form-bean.
lNot associating an Actionform-descended class with an action can also lead to this error.
Cannot find ActionMappings or ActionformBeans collection
lInstantiating Struts-provided Actionform class directly instead of instantiating a class derived off Actionform. This might occur implicitly if you specify that a form-bean is this Struts Actionform class rather than specifying a child of this class for the form-bean.
lNot associating an Actionform-descended class with an action can also lead to this error.
Cannot find ActionMappings or ActionformBeans collection
{
private String name=null;
private String address=null;
private String emailAddress=null; public void setName(String name){
this.name=name;
} public String getName(){
return this.name;
} public void setAddress(String address){
this.address=address;
} public String getAddress(){
return this.address;
}
public void setEmailAddress(String emailAddress){
this.emailAddress=emailAddress;
} public String getEmailAddress(){
return this.emailAddress;
}
..
}
是不是你的HelloForm没有extends ActionForm