struts2中actionerror，actionmessgae标签到底怎么用啊？？？求解答

Question

struts2jspactionerror标签

Answer 1

//errorActione文件package action;
import com.opensymphony.xwork2.ActionSupport; 
public class  ErrorAction extends ActionSupport{
private String account;
private String password;
private String email;
public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}

public String execute(){
String pwd=getPassword();
String name=getAccount();
String mail=getEmail();
if(name.isEmpty()){
addActionMessage("用户名不能为空！");
}
if(pwd.isEmpty()){
addActionMessage("密码不能为空！");
}
if(mail.isEmpty()){
addActionMessage("邮箱不能为空！");
}
else{
boolean IsOk= mail.matches("/^(([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\\.[a-zA-Z0-9_-]");
if(!IsOk)
addActionMessage("邮箱输入有误！");
}

return "success";
}



}

Answer 2

在jsp页面里要怎么应用<s:actionmessage/>标签来调用啊